./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:22:01,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:22:01,204 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:22:01,210 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:22:01,211 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:22:01,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:22:01,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:22:01,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:22:01,236 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:22:01,239 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:22:01,240 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:22:01,240 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:22:01,241 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:22:01,242 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:22:01,242 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:22:01,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:22:01,242 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:22:01,242 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:22:01,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:22:01,243 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:22:01,243 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:22:01,244 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:22:01,244 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:22:01,244 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:22:01,244 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:22:01,244 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:22:01,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:22:01,245 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:22:01,245 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:22:01,245 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:22:01,246 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:22:01,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:22:01,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:22:01,247 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:22:01,247 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:22:01,247 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:22:01,247 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:22:01,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:22:01,248 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:22:01,248 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:22:01,248 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:22:01,248 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:22:01,249 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:22:01,249 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:22:01,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:22:01,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:22:01,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:22:01,481 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:22:01,482 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:22:01,483 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 02:22:01,586 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:22:01,586 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:22:01,587 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 02:22:02,724 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:22:02,944 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:22:02,944 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 02:22:02,962 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6cd97709/44de22a105a74601a3492401cbf8b65f/FLAG6054f4538 [2024-06-28 02:22:02,974 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6cd97709/44de22a105a74601a3492401cbf8b65f [2024-06-28 02:22:02,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:22:02,976 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:22:02,978 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:22:02,978 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:22:02,981 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:22:02,982 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:22:01" (1/2) ... [2024-06-28 02:22:02,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a203612 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:02, skipping insertion in model container [2024-06-28 02:22:02,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:22:01" (1/2) ... [2024-06-28 02:22:02,984 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6f2be08a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:02, skipping insertion in model container [2024-06-28 02:22:02,984 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:22:02" (2/2) ... [2024-06-28 02:22:02,985 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a203612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:02, skipping insertion in model container [2024-06-28 02:22:02,985 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:22:02" (2/2) ... [2024-06-28 02:22:02,985 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:22:03,037 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:22:03,039 INFO L97 edCorrectnessWitness]: Location invariant before [L840-L840] (((((((((((((((! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) [2024-06-28 02:22:03,039 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) [2024-06-28 02:22:03,039 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:22:03,039 INFO L106 edCorrectnessWitness]: ghost_update [L837-L837] multithreaded = 1; [2024-06-28 02:22:03,104 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:22:03,449 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:22:03,470 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:22:03,614 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:22:03,653 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:22:03,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:03 WrapperNode [2024-06-28 02:22:03,654 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:22:03,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:22:03,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:22:03,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:22:03,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,688 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,718 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 158 [2024-06-28 02:22:03,718 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:22:03,719 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:22:03,719 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:22:03,720 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:22:03,729 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,743 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,760 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 02:22:03,760 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,761 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,767 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,769 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,770 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,771 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,774 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:22:03,775 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:22:03,775 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:22:03,775 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:22:03,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:22:03,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:22:03,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 02:22:03,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 02:22:03,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:22:03,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:22:03,860 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:22:03,860 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:22:03,860 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:22:03,861 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:22:03,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:22:03,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:22:03,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:22:03,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:22:03,863 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:22:03,991 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:22:03,992 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:22:04,262 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:22:04,262 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:22:04,463 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:22:04,463 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:22:04,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:22:04 BoogieIcfgContainer [2024-06-28 02:22:04,466 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:22:04,468 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:22:04,468 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:22:04,471 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:22:04,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:22:01" (1/4) ... [2024-06-28 02:22:04,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee46994 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:22:04, skipping insertion in model container [2024-06-28 02:22:04,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:22:02" (2/4) ... [2024-06-28 02:22:04,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee46994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:22:04, skipping insertion in model container [2024-06-28 02:22:04,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:03" (3/4) ... [2024-06-28 02:22:04,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee46994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:22:04, skipping insertion in model container [2024-06-28 02:22:04,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:22:04" (4/4) ... [2024-06-28 02:22:04,479 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 02:22:04,493 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:22:04,493 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 02:22:04,493 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:22:04,536 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:22:04,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-28 02:22:04,591 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-28 02:22:04,591 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:22:04,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:22:04,594 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-28 02:22:04,596 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-28 02:22:04,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:22:04,607 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@56f52acd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:22:04,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 02:22:04,610 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:22:04,611 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:22:04,611 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:22:04,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:04,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:22:04,612 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:04,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:04,616 INFO L85 PathProgramCache]: Analyzing trace with hash 409390742, now seen corresponding path program 1 times [2024-06-28 02:22:04,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:04,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033185648] [2024-06-28 02:22:04,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:04,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:05,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:05,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033185648] [2024-06-28 02:22:05,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033185648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:05,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:05,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:22:05,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390823552] [2024-06-28 02:22:05,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:05,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:22:05,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:05,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:22:05,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:22:05,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:22:05,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:05,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:05,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:22:05,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:05,541 INFO L124 PetriNetUnfolderBase]: 225/414 cut-off events. [2024-06-28 02:22:05,541 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-28 02:22:05,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 414 events. 225/414 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1559 event pairs, 141 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 822. Up to 394 conditions per place. [2024-06-28 02:22:05,546 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 23 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-28 02:22:05,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 121 flow [2024-06-28 02:22:05,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:22:05,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:22:05,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-06-28 02:22:05,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 02:22:05,556 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 52 transitions. [2024-06-28 02:22:05,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 121 flow [2024-06-28 02:22:05,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:05,560 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-28 02:22:05,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-28 02:22:05,563 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-28 02:22:05,564 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-28 02:22:05,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:05,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:05,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:05,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:22:05,564 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:05,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:05,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1711952367, now seen corresponding path program 1 times [2024-06-28 02:22:05,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:05,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832903580] [2024-06-28 02:22:05,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:05,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:05,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:05,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:05,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832903580] [2024-06-28 02:22:05,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832903580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:05,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:05,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:22:05,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213594230] [2024-06-28 02:22:05,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:05,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:22:05,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:05,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:22:05,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:22:06,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:22:06,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:06,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:06,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:22:06,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:06,156 INFO L124 PetriNetUnfolderBase]: 219/410 cut-off events. [2024-06-28 02:22:06,156 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-06-28 02:22:06,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 410 events. 219/410 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1532 event pairs, 99 based on Foata normal form. 4/411 useless extension candidates. Maximal degree in co-relation 906. Up to 366 conditions per place. [2024-06-28 02:22:06,161 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 28 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-28 02:22:06,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 167 flow [2024-06-28 02:22:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:22:06,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:22:06,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-28 02:22:06,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-28 02:22:06,164 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 67 transitions. [2024-06-28 02:22:06,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 167 flow [2024-06-28 02:22:06,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:06,169 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-28 02:22:06,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-28 02:22:06,170 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-28 02:22:06,171 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-28 02:22:06,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:06,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:06,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:06,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:22:06,172 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:06,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:06,176 INFO L85 PathProgramCache]: Analyzing trace with hash -213731472, now seen corresponding path program 1 times [2024-06-28 02:22:06,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:06,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45584722] [2024-06-28 02:22:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:06,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:07,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:07,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45584722] [2024-06-28 02:22:07,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45584722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:07,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:07,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:07,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479056392] [2024-06-28 02:22:07,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:07,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:07,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:07,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:07,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:07,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:22:07,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:07,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:07,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:22:07,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:07,458 INFO L124 PetriNetUnfolderBase]: 213/398 cut-off events. [2024-06-28 02:22:07,459 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-06-28 02:22:07,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 398 events. 213/398 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1480 event pairs, 57 based on Foata normal form. 4/397 useless extension candidates. Maximal degree in co-relation 970. Up to 338 conditions per place. [2024-06-28 02:22:07,461 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2024-06-28 02:22:07,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 44 transitions, 219 flow [2024-06-28 02:22:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:07,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:07,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-28 02:22:07,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 02:22:07,465 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 82 transitions. [2024-06-28 02:22:07,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 44 transitions, 219 flow [2024-06-28 02:22:07,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 44 transitions, 210 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:07,468 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-28 02:22:07,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-28 02:22:07,469 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-28 02:22:07,469 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-28 02:22:07,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:07,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:07,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:07,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:22:07,471 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:07,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:07,471 INFO L85 PathProgramCache]: Analyzing trace with hash -682473315, now seen corresponding path program 1 times [2024-06-28 02:22:07,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:07,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204742776] [2024-06-28 02:22:07,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:07,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:08,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:08,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:08,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204742776] [2024-06-28 02:22:08,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204742776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:08,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:08,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:08,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476934396] [2024-06-28 02:22:08,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:08,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:08,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:08,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:08,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:08,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:22:08,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:08,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:08,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:22:08,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:08,286 INFO L124 PetriNetUnfolderBase]: 211/398 cut-off events. [2024-06-28 02:22:08,286 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2024-06-28 02:22:08,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1068 conditions, 398 events. 211/398 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1492 event pairs, 143 based on Foata normal form. 1/399 useless extension candidates. Maximal degree in co-relation 1052. Up to 368 conditions per place. [2024-06-28 02:22:08,288 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 27 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2024-06-28 02:22:08,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 217 flow [2024-06-28 02:22:08,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:08,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:08,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-06-28 02:22:08,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 02:22:08,290 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 6 states and 68 transitions. [2024-06-28 02:22:08,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 217 flow [2024-06-28 02:22:08,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 200 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:08,291 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 150 flow [2024-06-28 02:22:08,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-28 02:22:08,292 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-06-28 02:22:08,292 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 150 flow [2024-06-28 02:22:08,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:08,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:08,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:08,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:22:08,293 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:08,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:08,294 INFO L85 PathProgramCache]: Analyzing trace with hash 762506447, now seen corresponding path program 1 times [2024-06-28 02:22:08,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:08,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886077303] [2024-06-28 02:22:08,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:08,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:09,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:09,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886077303] [2024-06-28 02:22:09,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886077303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:09,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:09,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:09,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106083371] [2024-06-28 02:22:09,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:09,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:09,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:09,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:09,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:09,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 02:22:09,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 150 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:09,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:09,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 02:22:09,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:09,660 INFO L124 PetriNetUnfolderBase]: 207/387 cut-off events. [2024-06-28 02:22:09,660 INFO L125 PetriNetUnfolderBase]: For 518/522 co-relation queries the response was YES. [2024-06-28 02:22:09,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1104 conditions, 387 events. 207/387 cut-off events. For 518/522 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1432 event pairs, 37 based on Foata normal form. 8/395 useless extension candidates. Maximal degree in co-relation 1086. Up to 309 conditions per place. [2024-06-28 02:22:09,662 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 35 selfloop transitions, 9 changer transitions 0/48 dead transitions. [2024-06-28 02:22:09,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 270 flow [2024-06-28 02:22:09,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:09,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:09,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-06-28 02:22:09,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2024-06-28 02:22:09,664 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 150 flow. Second operand 6 states and 91 transitions. [2024-06-28 02:22:09,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 270 flow [2024-06-28 02:22:09,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 257 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:09,666 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 151 flow [2024-06-28 02:22:09,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=151, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-28 02:22:09,667 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-28 02:22:09,667 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 151 flow [2024-06-28 02:22:09,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:09,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:09,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:09,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:22:09,668 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:09,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash 318165300, now seen corresponding path program 1 times [2024-06-28 02:22:09,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:09,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707958754] [2024-06-28 02:22:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:09,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:10,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:10,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707958754] [2024-06-28 02:22:10,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707958754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:10,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:10,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:10,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995249779] [2024-06-28 02:22:10,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:10,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:10,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:10,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:10,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:10,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:10,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 151 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:10,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:10,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:10,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:10,269 INFO L124 PetriNetUnfolderBase]: 237/424 cut-off events. [2024-06-28 02:22:10,269 INFO L125 PetriNetUnfolderBase]: For 855/855 co-relation queries the response was YES. [2024-06-28 02:22:10,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1295 conditions, 424 events. 237/424 cut-off events. For 855/855 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1509 event pairs, 160 based on Foata normal form. 1/425 useless extension candidates. Maximal degree in co-relation 1276. Up to 407 conditions per place. [2024-06-28 02:22:10,271 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 29 selfloop transitions, 9 changer transitions 0/40 dead transitions. [2024-06-28 02:22:10,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 40 transitions, 247 flow [2024-06-28 02:22:10,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:10,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:10,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-28 02:22:10,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 02:22:10,273 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 151 flow. Second operand 6 states and 64 transitions. [2024-06-28 02:22:10,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 40 transitions, 247 flow [2024-06-28 02:22:10,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 225 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:10,275 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 164 flow [2024-06-28 02:22:10,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-28 02:22:10,276 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-28 02:22:10,276 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 164 flow [2024-06-28 02:22:10,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:10,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:10,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:10,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:22:10,277 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:10,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:10,277 INFO L85 PathProgramCache]: Analyzing trace with hash 2031815996, now seen corresponding path program 1 times [2024-06-28 02:22:10,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:10,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141089232] [2024-06-28 02:22:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:10,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:10,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:10,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141089232] [2024-06-28 02:22:10,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141089232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:10,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:10,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:10,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907098325] [2024-06-28 02:22:10,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:10,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:10,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:10,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:10,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:10,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:22:10,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 164 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:10,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:10,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:22:10,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:10,924 INFO L124 PetriNetUnfolderBase]: 230/423 cut-off events. [2024-06-28 02:22:10,924 INFO L125 PetriNetUnfolderBase]: For 1129/1131 co-relation queries the response was YES. [2024-06-28 02:22:10,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 423 events. 230/423 cut-off events. For 1129/1131 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1550 event pairs, 78 based on Foata normal form. 4/427 useless extension candidates. Maximal degree in co-relation 1324. Up to 364 conditions per place. [2024-06-28 02:22:10,926 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 35 selfloop transitions, 14 changer transitions 0/53 dead transitions. [2024-06-28 02:22:10,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 53 transitions, 316 flow [2024-06-28 02:22:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:10,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-28 02:22:10,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:22:10,928 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 164 flow. Second operand 7 states and 84 transitions. [2024-06-28 02:22:10,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 53 transitions, 316 flow [2024-06-28 02:22:10,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 297 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:10,931 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 220 flow [2024-06-28 02:22:10,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=220, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-06-28 02:22:10,932 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-28 02:22:10,932 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 220 flow [2024-06-28 02:22:10,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:10,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:10,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:10,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:22:10,933 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:10,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:10,934 INFO L85 PathProgramCache]: Analyzing trace with hash 215486154, now seen corresponding path program 2 times [2024-06-28 02:22:10,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:10,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127633581] [2024-06-28 02:22:10,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:10,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:11,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:11,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127633581] [2024-06-28 02:22:11,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127633581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:11,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:11,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:11,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577296466] [2024-06-28 02:22:11,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:11,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:11,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:11,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:11,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:11,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:22:11,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:11,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:11,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:22:11,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:11,733 INFO L124 PetriNetUnfolderBase]: 236/433 cut-off events. [2024-06-28 02:22:11,733 INFO L125 PetriNetUnfolderBase]: For 1587/1589 co-relation queries the response was YES. [2024-06-28 02:22:11,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 433 events. 236/433 cut-off events. For 1587/1589 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1598 event pairs, 78 based on Foata normal form. 4/437 useless extension candidates. Maximal degree in co-relation 1526. Up to 368 conditions per place. [2024-06-28 02:22:11,736 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 34 selfloop transitions, 15 changer transitions 0/53 dead transitions. [2024-06-28 02:22:11,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 360 flow [2024-06-28 02:22:11,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:11,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-06-28 02:22:11,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 02:22:11,737 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 220 flow. Second operand 6 states and 74 transitions. [2024-06-28 02:22:11,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 360 flow [2024-06-28 02:22:11,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 345 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:11,740 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 259 flow [2024-06-28 02:22:11,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=259, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-06-28 02:22:11,741 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-28 02:22:11,741 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 259 flow [2024-06-28 02:22:11,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:11,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:11,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:11,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:22:11,741 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:11,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:11,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1273182396, now seen corresponding path program 3 times [2024-06-28 02:22:11,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:11,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563436095] [2024-06-28 02:22:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:11,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:12,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:12,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563436095] [2024-06-28 02:22:12,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563436095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:12,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:12,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:12,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878228169] [2024-06-28 02:22:12,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:12,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:12,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:12,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:12,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:12,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:22:12,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 259 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:12,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:12,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:22:12,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:12,451 INFO L124 PetriNetUnfolderBase]: 234/433 cut-off events. [2024-06-28 02:22:12,451 INFO L125 PetriNetUnfolderBase]: For 2087/2089 co-relation queries the response was YES. [2024-06-28 02:22:12,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 433 events. 234/433 cut-off events. For 2087/2089 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1624 event pairs, 78 based on Foata normal form. 4/437 useless extension candidates. Maximal degree in co-relation 1633. Up to 354 conditions per place. [2024-06-28 02:22:12,454 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 36 selfloop transitions, 17 changer transitions 0/57 dead transitions. [2024-06-28 02:22:12,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 445 flow [2024-06-28 02:22:12,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:12,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-06-28 02:22:12,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 02:22:12,455 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 259 flow. Second operand 6 states and 75 transitions. [2024-06-28 02:22:12,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 445 flow [2024-06-28 02:22:12,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 57 transitions, 401 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:12,460 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 292 flow [2024-06-28 02:22:12,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-06-28 02:22:12,461 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-28 02:22:12,461 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 292 flow [2024-06-28 02:22:12,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:12,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:12,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:12,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:22:12,462 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:12,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:12,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1273191324, now seen corresponding path program 1 times [2024-06-28 02:22:12,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:12,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106320023] [2024-06-28 02:22:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:12,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:13,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:13,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:13,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106320023] [2024-06-28 02:22:13,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106320023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:13,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:13,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:13,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417023425] [2024-06-28 02:22:13,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:13,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:13,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:13,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:13,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:13,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:13,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 292 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:13,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:13,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:13,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:13,317 INFO L124 PetriNetUnfolderBase]: 252/450 cut-off events. [2024-06-28 02:22:13,318 INFO L125 PetriNetUnfolderBase]: For 2006/2006 co-relation queries the response was YES. [2024-06-28 02:22:13,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1711 conditions, 450 events. 252/450 cut-off events. For 2006/2006 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1636 event pairs, 135 based on Foata normal form. 1/451 useless extension candidates. Maximal degree in co-relation 1684. Up to 430 conditions per place. [2024-06-28 02:22:13,320 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 43 selfloop transitions, 11 changer transitions 0/56 dead transitions. [2024-06-28 02:22:13,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 424 flow [2024-06-28 02:22:13,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:13,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:13,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-28 02:22:13,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-28 02:22:13,322 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 292 flow. Second operand 7 states and 72 transitions. [2024-06-28 02:22:13,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 424 flow [2024-06-28 02:22:13,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 408 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:13,325 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 317 flow [2024-06-28 02:22:13,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=317, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2024-06-28 02:22:13,327 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-28 02:22:13,327 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 317 flow [2024-06-28 02:22:13,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:13,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:13,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:13,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:22:13,328 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:13,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:13,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1831320782, now seen corresponding path program 1 times [2024-06-28 02:22:13,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:13,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911100197] [2024-06-28 02:22:13,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:13,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:13,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:13,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:13,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911100197] [2024-06-28 02:22:13,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911100197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:13,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:13,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:13,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175709051] [2024-06-28 02:22:13,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:13,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:13,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:13,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:13,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:14,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:22:14,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 317 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:14,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:14,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:22:14,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:14,232 INFO L124 PetriNetUnfolderBase]: 242/447 cut-off events. [2024-06-28 02:22:14,232 INFO L125 PetriNetUnfolderBase]: For 2400/2400 co-relation queries the response was YES. [2024-06-28 02:22:14,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 447 events. 242/447 cut-off events. For 2400/2400 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1688 event pairs, 108 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 1757. Up to 380 conditions per place. [2024-06-28 02:22:14,235 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 44 selfloop transitions, 17 changer transitions 0/65 dead transitions. [2024-06-28 02:22:14,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 65 transitions, 505 flow [2024-06-28 02:22:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:14,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:14,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-28 02:22:14,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-06-28 02:22:14,236 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 317 flow. Second operand 7 states and 85 transitions. [2024-06-28 02:22:14,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 65 transitions, 505 flow [2024-06-28 02:22:14,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 480 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:14,240 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 383 flow [2024-06-28 02:22:14,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-06-28 02:22:14,240 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-06-28 02:22:14,240 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 383 flow [2024-06-28 02:22:14,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:14,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:14,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:14,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:22:14,241 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:14,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:14,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1438586769, now seen corresponding path program 1 times [2024-06-28 02:22:14,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:14,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474348516] [2024-06-28 02:22:14,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:14,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:14,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:14,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474348516] [2024-06-28 02:22:14,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474348516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:14,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:14,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:14,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816346036] [2024-06-28 02:22:14,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:14,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:14,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:14,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:14,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:14,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:14,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 383 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:14,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:14,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:14,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:14,963 INFO L124 PetriNetUnfolderBase]: 265/472 cut-off events. [2024-06-28 02:22:14,963 INFO L125 PetriNetUnfolderBase]: For 2901/2901 co-relation queries the response was YES. [2024-06-28 02:22:14,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1974 conditions, 472 events. 265/472 cut-off events. For 2901/2901 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1704 event pairs, 84 based on Foata normal form. 2/474 useless extension candidates. Maximal degree in co-relation 1943. Up to 422 conditions per place. [2024-06-28 02:22:14,966 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 49 selfloop transitions, 18 changer transitions 0/69 dead transitions. [2024-06-28 02:22:14,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 567 flow [2024-06-28 02:22:14,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:14,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 02:22:14,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-28 02:22:14,968 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 383 flow. Second operand 8 states and 87 transitions. [2024-06-28 02:22:14,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 567 flow [2024-06-28 02:22:14,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 537 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:14,971 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 410 flow [2024-06-28 02:22:14,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=410, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-06-28 02:22:14,972 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2024-06-28 02:22:14,972 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 410 flow [2024-06-28 02:22:14,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:14,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:14,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:14,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:22:14,972 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:14,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:14,973 INFO L85 PathProgramCache]: Analyzing trace with hash -2123617172, now seen corresponding path program 2 times [2024-06-28 02:22:14,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:14,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122674212] [2024-06-28 02:22:14,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:14,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:15,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:15,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:15,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122674212] [2024-06-28 02:22:15,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122674212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:15,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:15,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:15,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159917070] [2024-06-28 02:22:15,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:15,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:15,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:15,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:15,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:15,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:22:15,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 410 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:15,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:15,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:22:15,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:15,914 INFO L124 PetriNetUnfolderBase]: 248/456 cut-off events. [2024-06-28 02:22:15,914 INFO L125 PetriNetUnfolderBase]: For 3395/3395 co-relation queries the response was YES. [2024-06-28 02:22:15,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 456 events. 248/456 cut-off events. For 3395/3395 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1723 event pairs, 107 based on Foata normal form. 1/457 useless extension candidates. Maximal degree in co-relation 1957. Up to 376 conditions per place. [2024-06-28 02:22:15,917 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 41 selfloop transitions, 19 changer transitions 0/65 dead transitions. [2024-06-28 02:22:15,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 65 transitions, 554 flow [2024-06-28 02:22:15,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:15,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:15,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-06-28 02:22:15,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 02:22:15,919 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 410 flow. Second operand 6 states and 74 transitions. [2024-06-28 02:22:15,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 65 transitions, 554 flow [2024-06-28 02:22:15,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 65 transitions, 511 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:15,922 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 419 flow [2024-06-28 02:22:15,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=419, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-06-28 02:22:15,923 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2024-06-28 02:22:15,923 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 419 flow [2024-06-28 02:22:15,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:15,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:15,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:15,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:22:15,924 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:15,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:15,924 INFO L85 PathProgramCache]: Analyzing trace with hash -743588567, now seen corresponding path program 2 times [2024-06-28 02:22:15,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:15,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232252535] [2024-06-28 02:22:15,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:15,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:16,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:16,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232252535] [2024-06-28 02:22:16,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232252535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:16,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:16,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:16,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894280145] [2024-06-28 02:22:16,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:16,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:16,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:16,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:16,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:16,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:16,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 419 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:16,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:16,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:16,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:16,685 INFO L124 PetriNetUnfolderBase]: 269/479 cut-off events. [2024-06-28 02:22:16,685 INFO L125 PetriNetUnfolderBase]: For 3937/3937 co-relation queries the response was YES. [2024-06-28 02:22:16,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2143 conditions, 479 events. 269/479 cut-off events. For 3937/3937 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1740 event pairs, 84 based on Foata normal form. 2/481 useless extension candidates. Maximal degree in co-relation 2110. Up to 415 conditions per place. [2024-06-28 02:22:16,688 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 46 selfloop transitions, 21 changer transitions 0/69 dead transitions. [2024-06-28 02:22:16,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 69 transitions, 601 flow [2024-06-28 02:22:16,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:16,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:16,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 02:22:16,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482142857142857 [2024-06-28 02:22:16,689 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 419 flow. Second operand 7 states and 78 transitions. [2024-06-28 02:22:16,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 69 transitions, 601 flow [2024-06-28 02:22:16,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 556 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:16,693 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 444 flow [2024-06-28 02:22:16,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=444, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2024-06-28 02:22:16,694 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-28 02:22:16,694 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 444 flow [2024-06-28 02:22:16,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:16,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:16,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:16,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:22:16,695 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:16,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:16,695 INFO L85 PathProgramCache]: Analyzing trace with hash 813950197, now seen corresponding path program 3 times [2024-06-28 02:22:16,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:16,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517796683] [2024-06-28 02:22:16,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:16,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:17,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:17,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:17,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517796683] [2024-06-28 02:22:17,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517796683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:17,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:17,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:17,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648260008] [2024-06-28 02:22:17,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:17,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:17,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:17,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:17,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:17,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:17,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 444 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:17,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:17,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:17,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:17,423 INFO L124 PetriNetUnfolderBase]: 280/498 cut-off events. [2024-06-28 02:22:17,424 INFO L125 PetriNetUnfolderBase]: For 4187/4187 co-relation queries the response was YES. [2024-06-28 02:22:17,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2299 conditions, 498 events. 280/498 cut-off events. For 4187/4187 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1841 event pairs, 91 based on Foata normal form. 2/500 useless extension candidates. Maximal degree in co-relation 2265. Up to 392 conditions per place. [2024-06-28 02:22:17,427 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 46 selfloop transitions, 28 changer transitions 0/76 dead transitions. [2024-06-28 02:22:17,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 736 flow [2024-06-28 02:22:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:17,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-28 02:22:17,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-28 02:22:17,429 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 444 flow. Second operand 7 states and 82 transitions. [2024-06-28 02:22:17,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 736 flow [2024-06-28 02:22:17,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 76 transitions, 670 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:17,435 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 507 flow [2024-06-28 02:22:17,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=507, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2024-06-28 02:22:17,435 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2024-06-28 02:22:17,435 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 507 flow [2024-06-28 02:22:17,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:17,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:17,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:17,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:22:17,436 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:17,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:17,437 INFO L85 PathProgramCache]: Analyzing trace with hash -738016937, now seen corresponding path program 4 times [2024-06-28 02:22:17,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:17,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66866772] [2024-06-28 02:22:17,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:17,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:17,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:17,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:17,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66866772] [2024-06-28 02:22:17,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66866772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:17,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:17,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:17,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849443244] [2024-06-28 02:22:17,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:17,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:17,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:17,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:17,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:17,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:17,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 507 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:17,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:17,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:17,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:18,136 INFO L124 PetriNetUnfolderBase]: 276/492 cut-off events. [2024-06-28 02:22:18,137 INFO L125 PetriNetUnfolderBase]: For 4067/4067 co-relation queries the response was YES. [2024-06-28 02:22:18,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2250 conditions, 492 events. 276/492 cut-off events. For 4067/4067 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1823 event pairs, 86 based on Foata normal form. 2/494 useless extension candidates. Maximal degree in co-relation 2215. Up to 389 conditions per place. [2024-06-28 02:22:18,140 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 41 selfloop transitions, 32 changer transitions 0/75 dead transitions. [2024-06-28 02:22:18,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 75 transitions, 711 flow [2024-06-28 02:22:18,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:18,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:18,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-28 02:22:18,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-28 02:22:18,141 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 507 flow. Second operand 7 states and 80 transitions. [2024-06-28 02:22:18,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 75 transitions, 711 flow [2024-06-28 02:22:18,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 75 transitions, 679 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:18,147 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 544 flow [2024-06-28 02:22:18,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=544, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-06-28 02:22:18,147 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-28 02:22:18,147 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 544 flow [2024-06-28 02:22:18,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:18,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:18,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:18,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:22:18,148 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:18,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:18,149 INFO L85 PathProgramCache]: Analyzing trace with hash 814227027, now seen corresponding path program 1 times [2024-06-28 02:22:18,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:18,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559266674] [2024-06-28 02:22:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:18,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:18,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:18,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559266674] [2024-06-28 02:22:18,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559266674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:18,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:18,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:18,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059415980] [2024-06-28 02:22:18,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:18,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:18,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:18,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:18,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:19,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:19,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 544 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:19,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:19,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:19,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:19,209 INFO L124 PetriNetUnfolderBase]: 274/489 cut-off events. [2024-06-28 02:22:19,210 INFO L125 PetriNetUnfolderBase]: For 4502/4502 co-relation queries the response was YES. [2024-06-28 02:22:19,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 489 events. 274/489 cut-off events. For 4502/4502 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1827 event pairs, 136 based on Foata normal form. 1/490 useless extension candidates. Maximal degree in co-relation 2291. Up to 465 conditions per place. [2024-06-28 02:22:19,213 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-06-28 02:22:19,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 74 transitions, 716 flow [2024-06-28 02:22:19,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:19,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:19,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-28 02:22:19,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-28 02:22:19,214 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 544 flow. Second operand 8 states and 80 transitions. [2024-06-28 02:22:19,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 74 transitions, 716 flow [2024-06-28 02:22:19,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 74 transitions, 661 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:19,220 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 536 flow [2024-06-28 02:22:19,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=536, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2024-06-28 02:22:19,220 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-28 02:22:19,221 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 536 flow [2024-06-28 02:22:19,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:19,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:19,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:19,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:22:19,221 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:19,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:19,222 INFO L85 PathProgramCache]: Analyzing trace with hash -441972931, now seen corresponding path program 1 times [2024-06-28 02:22:19,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:19,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596586494] [2024-06-28 02:22:19,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:19,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:20,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:20,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596586494] [2024-06-28 02:22:20,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596586494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:20,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:20,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:20,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203265195] [2024-06-28 02:22:20,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:20,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:20,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:20,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:20,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:20,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:22:20,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 536 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:20,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:20,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:22:20,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:20,380 INFO L124 PetriNetUnfolderBase]: 273/498 cut-off events. [2024-06-28 02:22:20,380 INFO L125 PetriNetUnfolderBase]: For 5320/5322 co-relation queries the response was YES. [2024-06-28 02:22:20,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2387 conditions, 498 events. 273/498 cut-off events. For 5320/5322 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1944 event pairs, 79 based on Foata normal form. 2/498 useless extension candidates. Maximal degree in co-relation 2349. Up to 396 conditions per place. [2024-06-28 02:22:20,383 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 18 changer transitions 0/87 dead transitions. [2024-06-28 02:22:20,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 760 flow [2024-06-28 02:22:20,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:20,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-28 02:22:20,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-28 02:22:20,384 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 536 flow. Second operand 8 states and 98 transitions. [2024-06-28 02:22:20,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 760 flow [2024-06-28 02:22:20,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 87 transitions, 729 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:20,389 INFO L231 Difference]: Finished difference. Result has 84 places, 72 transitions, 587 flow [2024-06-28 02:22:20,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=587, PETRI_PLACES=84, PETRI_TRANSITIONS=72} [2024-06-28 02:22:20,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-28 02:22:20,390 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 72 transitions, 587 flow [2024-06-28 02:22:20,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:20,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:20,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:20,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:22:20,391 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:20,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:20,391 INFO L85 PathProgramCache]: Analyzing trace with hash -947587515, now seen corresponding path program 2 times [2024-06-28 02:22:20,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:20,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508692798] [2024-06-28 02:22:20,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:20,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:21,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:21,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508692798] [2024-06-28 02:22:21,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508692798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:21,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:21,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:21,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592602882] [2024-06-28 02:22:21,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:21,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:21,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:21,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:21,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:21,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:22:21,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 72 transitions, 587 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:21,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:21,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:22:21,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:21,524 INFO L124 PetriNetUnfolderBase]: 285/520 cut-off events. [2024-06-28 02:22:21,525 INFO L125 PetriNetUnfolderBase]: For 5813/5813 co-relation queries the response was YES. [2024-06-28 02:22:21,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2565 conditions, 520 events. 285/520 cut-off events. For 5813/5813 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2055 event pairs, 59 based on Foata normal form. 2/522 useless extension candidates. Maximal degree in co-relation 2525. Up to 409 conditions per place. [2024-06-28 02:22:21,528 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 61 selfloop transitions, 21 changer transitions 0/91 dead transitions. [2024-06-28 02:22:21,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 821 flow [2024-06-28 02:22:21,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:21,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:21,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-28 02:22:21,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 02:22:21,529 INFO L175 Difference]: Start difference. First operand has 84 places, 72 transitions, 587 flow. Second operand 8 states and 100 transitions. [2024-06-28 02:22:21,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 821 flow [2024-06-28 02:22:21,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 91 transitions, 772 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:21,535 INFO L231 Difference]: Finished difference. Result has 87 places, 76 transitions, 621 flow [2024-06-28 02:22:21,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=621, PETRI_PLACES=87, PETRI_TRANSITIONS=76} [2024-06-28 02:22:21,536 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-28 02:22:21,536 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 76 transitions, 621 flow [2024-06-28 02:22:21,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:21,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:21,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:21,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:22:21,537 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:21,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:21,537 INFO L85 PathProgramCache]: Analyzing trace with hash -936742599, now seen corresponding path program 1 times [2024-06-28 02:22:21,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:21,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632055531] [2024-06-28 02:22:21,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:21,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:22,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:22,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632055531] [2024-06-28 02:22:22,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632055531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:22,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:22,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:22,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725042856] [2024-06-28 02:22:22,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:22,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:22,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:22,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:22,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:22,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:22,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 76 transitions, 621 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:22,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:22,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:22,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:22,530 INFO L124 PetriNetUnfolderBase]: 305/542 cut-off events. [2024-06-28 02:22:22,530 INFO L125 PetriNetUnfolderBase]: For 6345/6345 co-relation queries the response was YES. [2024-06-28 02:22:22,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2731 conditions, 542 events. 305/542 cut-off events. For 6345/6345 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2101 event pairs, 115 based on Foata normal form. 1/543 useless extension candidates. Maximal degree in co-relation 2690. Up to 485 conditions per place. [2024-06-28 02:22:22,534 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 67 selfloop transitions, 21 changer transitions 0/90 dead transitions. [2024-06-28 02:22:22,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 90 transitions, 855 flow [2024-06-28 02:22:22,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:22,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 02:22:22,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:22:22,535 INFO L175 Difference]: Start difference. First operand has 87 places, 76 transitions, 621 flow. Second operand 8 states and 88 transitions. [2024-06-28 02:22:22,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 90 transitions, 855 flow [2024-06-28 02:22:22,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 90 transitions, 816 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:22,543 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 656 flow [2024-06-28 02:22:22,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=656, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-06-28 02:22:22,543 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-28 02:22:22,544 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 656 flow [2024-06-28 02:22:22,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:22,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:22,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:22,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:22:22,544 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:22,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:22,545 INFO L85 PathProgramCache]: Analyzing trace with hash -936742785, now seen corresponding path program 3 times [2024-06-28 02:22:22,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:22,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899012846] [2024-06-28 02:22:22,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:22,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:23,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:23,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899012846] [2024-06-28 02:22:23,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899012846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:23,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:23,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:23,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504784932] [2024-06-28 02:22:23,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:23,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:23,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:23,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:23,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:23,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:22:23,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 656 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:23,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:23,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:22:23,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:23,818 INFO L124 PetriNetUnfolderBase]: 294/535 cut-off events. [2024-06-28 02:22:23,818 INFO L125 PetriNetUnfolderBase]: For 7344/7344 co-relation queries the response was YES. [2024-06-28 02:22:23,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2741 conditions, 535 events. 294/535 cut-off events. For 7344/7344 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2132 event pairs, 59 based on Foata normal form. 2/537 useless extension candidates. Maximal degree in co-relation 2699. Up to 397 conditions per place. [2024-06-28 02:22:23,822 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 57 selfloop transitions, 28 changer transitions 0/95 dead transitions. [2024-06-28 02:22:23,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 95 transitions, 886 flow [2024-06-28 02:22:23,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:23,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-28 02:22:23,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-28 02:22:23,823 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 656 flow. Second operand 8 states and 101 transitions. [2024-06-28 02:22:23,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 95 transitions, 886 flow [2024-06-28 02:22:23,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 95 transitions, 844 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:23,832 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 700 flow [2024-06-28 02:22:23,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=700, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2024-06-28 02:22:23,833 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-28 02:22:23,833 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 700 flow [2024-06-28 02:22:23,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:23,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:23,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:23,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:22:23,833 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:23,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:23,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1646515263, now seen corresponding path program 1 times [2024-06-28 02:22:23,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:23,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469216639] [2024-06-28 02:22:23,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:23,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:24,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:24,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469216639] [2024-06-28 02:22:24,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469216639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:24,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:24,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:24,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678253057] [2024-06-28 02:22:24,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:24,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:24,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:24,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:24,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:24,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:24,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 80 transitions, 700 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:24,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:24,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:24,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:24,623 INFO L124 PetriNetUnfolderBase]: 317/563 cut-off events. [2024-06-28 02:22:24,624 INFO L125 PetriNetUnfolderBase]: For 8186/8188 co-relation queries the response was YES. [2024-06-28 02:22:24,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2968 conditions, 563 events. 317/563 cut-off events. For 8186/8188 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2240 event pairs, 99 based on Foata normal form. 4/567 useless extension candidates. Maximal degree in co-relation 2925. Up to 503 conditions per place. [2024-06-28 02:22:24,628 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 74 selfloop transitions, 20 changer transitions 0/96 dead transitions. [2024-06-28 02:22:24,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 96 transitions, 950 flow [2024-06-28 02:22:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:24,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 02:22:24,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 02:22:24,629 INFO L175 Difference]: Start difference. First operand has 93 places, 80 transitions, 700 flow. Second operand 9 states and 96 transitions. [2024-06-28 02:22:24,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 96 transitions, 950 flow [2024-06-28 02:22:24,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 96 transitions, 882 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:24,639 INFO L231 Difference]: Finished difference. Result has 96 places, 82 transitions, 697 flow [2024-06-28 02:22:24,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=697, PETRI_PLACES=96, PETRI_TRANSITIONS=82} [2024-06-28 02:22:24,639 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-28 02:22:24,639 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 82 transitions, 697 flow [2024-06-28 02:22:24,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:24,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:24,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:24,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:22:24,640 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:24,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:24,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1407741463, now seen corresponding path program 4 times [2024-06-28 02:22:24,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:24,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886416016] [2024-06-28 02:22:24,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:24,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:25,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:25,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886416016] [2024-06-28 02:22:25,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886416016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:25,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:25,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:25,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980671536] [2024-06-28 02:22:25,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:25,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:25,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:25,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:25,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:25,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:22:25,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 82 transitions, 697 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:25,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:25,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:22:25,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:25,896 INFO L124 PetriNetUnfolderBase]: 304/553 cut-off events. [2024-06-28 02:22:25,897 INFO L125 PetriNetUnfolderBase]: For 9537/9539 co-relation queries the response was YES. [2024-06-28 02:22:25,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3006 conditions, 553 events. 304/553 cut-off events. For 9537/9539 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2242 event pairs, 81 based on Foata normal form. 2/553 useless extension candidates. Maximal degree in co-relation 2962. Up to 426 conditions per place. [2024-06-28 02:22:25,903 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 63 selfloop transitions, 23 changer transitions 0/96 dead transitions. [2024-06-28 02:22:25,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 96 transitions, 923 flow [2024-06-28 02:22:25,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:25,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:25,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-28 02:22:25,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-28 02:22:25,905 INFO L175 Difference]: Start difference. First operand has 96 places, 82 transitions, 697 flow. Second operand 7 states and 87 transitions. [2024-06-28 02:22:25,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 96 transitions, 923 flow [2024-06-28 02:22:25,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 96 transitions, 874 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:25,918 INFO L231 Difference]: Finished difference. Result has 96 places, 84 transitions, 733 flow [2024-06-28 02:22:25,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=733, PETRI_PLACES=96, PETRI_TRANSITIONS=84} [2024-06-28 02:22:25,918 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-28 02:22:25,918 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 84 transitions, 733 flow [2024-06-28 02:22:25,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:25,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:25,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:25,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:22:25,919 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:25,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:25,919 INFO L85 PathProgramCache]: Analyzing trace with hash 919166149, now seen corresponding path program 2 times [2024-06-28 02:22:25,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:25,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35298659] [2024-06-28 02:22:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:25,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:26,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:26,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35298659] [2024-06-28 02:22:26,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35298659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:26,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:26,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:26,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14355345] [2024-06-28 02:22:26,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:26,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:26,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:26,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:26,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:26,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:26,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 733 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:26,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:26,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:26,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:27,057 INFO L124 PetriNetUnfolderBase]: 321/569 cut-off events. [2024-06-28 02:22:27,058 INFO L125 PetriNetUnfolderBase]: For 9438/9438 co-relation queries the response was YES. [2024-06-28 02:22:27,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3122 conditions, 569 events. 321/569 cut-off events. For 9438/9438 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2266 event pairs, 100 based on Foata normal form. 1/570 useless extension candidates. Maximal degree in co-relation 3077. Up to 512 conditions per place. [2024-06-28 02:22:27,061 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 71 selfloop transitions, 22 changer transitions 0/95 dead transitions. [2024-06-28 02:22:27,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 95 transitions, 967 flow [2024-06-28 02:22:27,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:27,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:27,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 02:22:27,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-28 02:22:27,063 INFO L175 Difference]: Start difference. First operand has 96 places, 84 transitions, 733 flow. Second operand 8 states and 86 transitions. [2024-06-28 02:22:27,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 95 transitions, 967 flow [2024-06-28 02:22:27,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 95 transitions, 900 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:27,076 INFO L231 Difference]: Finished difference. Result has 99 places, 85 transitions, 731 flow [2024-06-28 02:22:27,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=731, PETRI_PLACES=99, PETRI_TRANSITIONS=85} [2024-06-28 02:22:27,076 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-28 02:22:27,077 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 85 transitions, 731 flow [2024-06-28 02:22:27,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:27,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:27,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:27,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:22:27,077 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:27,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:27,078 INFO L85 PathProgramCache]: Analyzing trace with hash -32061931, now seen corresponding path program 5 times [2024-06-28 02:22:27,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:27,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146858576] [2024-06-28 02:22:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:27,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:27,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:27,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146858576] [2024-06-28 02:22:27,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146858576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:27,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:27,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:27,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51994902] [2024-06-28 02:22:27,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:27,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:27,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:27,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:27,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:28,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:22:28,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 85 transitions, 731 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:28,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:28,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:22:28,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:28,335 INFO L124 PetriNetUnfolderBase]: 304/556 cut-off events. [2024-06-28 02:22:28,335 INFO L125 PetriNetUnfolderBase]: For 8787/8787 co-relation queries the response was YES. [2024-06-28 02:22:28,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2942 conditions, 556 events. 304/556 cut-off events. For 8787/8787 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2234 event pairs, 60 based on Foata normal form. 2/558 useless extension candidates. Maximal degree in co-relation 2896. Up to 396 conditions per place. [2024-06-28 02:22:28,342 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 56 selfloop transitions, 33 changer transitions 0/99 dead transitions. [2024-06-28 02:22:28,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 99 transitions, 961 flow [2024-06-28 02:22:28,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:28,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:28,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-28 02:22:28,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 02:22:28,344 INFO L175 Difference]: Start difference. First operand has 99 places, 85 transitions, 731 flow. Second operand 7 states and 88 transitions. [2024-06-28 02:22:28,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 99 transitions, 961 flow [2024-06-28 02:22:28,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 99 transitions, 858 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 02:22:28,356 INFO L231 Difference]: Finished difference. Result has 97 places, 87 transitions, 728 flow [2024-06-28 02:22:28,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=728, PETRI_PLACES=97, PETRI_TRANSITIONS=87} [2024-06-28 02:22:28,357 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-28 02:22:28,357 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 87 transitions, 728 flow [2024-06-28 02:22:28,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:28,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:28,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:28,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:22:28,358 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:28,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:28,358 INFO L85 PathProgramCache]: Analyzing trace with hash -27413357, now seen corresponding path program 2 times [2024-06-28 02:22:28,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:28,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889525420] [2024-06-28 02:22:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:28,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:28,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:28,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889525420] [2024-06-28 02:22:28,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889525420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:28,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:28,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:28,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953516845] [2024-06-28 02:22:28,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:28,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:28,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:28,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:28,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:28,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:28,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 87 transitions, 728 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:28,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:28,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:28,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:29,173 INFO L124 PetriNetUnfolderBase]: 333/590 cut-off events. [2024-06-28 02:22:29,173 INFO L125 PetriNetUnfolderBase]: For 9672/9672 co-relation queries the response was YES. [2024-06-28 02:22:29,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3147 conditions, 590 events. 333/590 cut-off events. For 9672/9672 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2372 event pairs, 97 based on Foata normal form. 2/592 useless extension candidates. Maximal degree in co-relation 3102. Up to 508 conditions per place. [2024-06-28 02:22:29,177 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 73 selfloop transitions, 26 changer transitions 0/101 dead transitions. [2024-06-28 02:22:29,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 101 transitions, 986 flow [2024-06-28 02:22:29,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:29,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:29,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 02:22:29,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-28 02:22:29,181 INFO L175 Difference]: Start difference. First operand has 97 places, 87 transitions, 728 flow. Second operand 8 states and 87 transitions. [2024-06-28 02:22:29,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 101 transitions, 986 flow [2024-06-28 02:22:29,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 101 transitions, 910 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:29,191 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 736 flow [2024-06-28 02:22:29,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=736, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2024-06-28 02:22:29,192 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-28 02:22:29,192 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 736 flow [2024-06-28 02:22:29,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:29,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:29,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:29,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:22:29,193 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:29,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:29,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2092446867, now seen corresponding path program 3 times [2024-06-28 02:22:29,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:29,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276197808] [2024-06-28 02:22:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:29,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:29,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:29,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:29,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276197808] [2024-06-28 02:22:29,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276197808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:29,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:29,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:29,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327909838] [2024-06-28 02:22:29,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:29,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:29,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:29,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:29,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:29,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:29,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 736 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:29,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:29,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:29,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:29,978 INFO L124 PetriNetUnfolderBase]: 339/601 cut-off events. [2024-06-28 02:22:29,978 INFO L125 PetriNetUnfolderBase]: For 9839/9839 co-relation queries the response was YES. [2024-06-28 02:22:29,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3178 conditions, 601 events. 339/601 cut-off events. For 9839/9839 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2434 event pairs, 94 based on Foata normal form. 2/603 useless extension candidates. Maximal degree in co-relation 3132. Up to 452 conditions per place. [2024-06-28 02:22:29,982 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 44 changer transitions 0/105 dead transitions. [2024-06-28 02:22:29,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 105 transitions, 1072 flow [2024-06-28 02:22:29,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:29,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 02:22:29,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-28 02:22:29,983 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 736 flow. Second operand 8 states and 90 transitions. [2024-06-28 02:22:29,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 105 transitions, 1072 flow [2024-06-28 02:22:29,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 105 transitions, 998 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:29,996 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 809 flow [2024-06-28 02:22:29,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=809, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2024-06-28 02:22:29,997 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-28 02:22:29,997 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 809 flow [2024-06-28 02:22:29,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:29,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:29,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:29,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:22:29,997 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:29,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:29,998 INFO L85 PathProgramCache]: Analyzing trace with hash -529071843, now seen corresponding path program 4 times [2024-06-28 02:22:29,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:29,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014552856] [2024-06-28 02:22:29,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:29,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:30,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:30,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014552856] [2024-06-28 02:22:30,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014552856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:30,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:30,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:30,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420808902] [2024-06-28 02:22:30,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:30,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:30,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:30,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:30,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:30,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:30,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 809 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:30,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:30,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:30,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:30,762 INFO L124 PetriNetUnfolderBase]: 345/611 cut-off events. [2024-06-28 02:22:30,762 INFO L125 PetriNetUnfolderBase]: For 9872/9872 co-relation queries the response was YES. [2024-06-28 02:22:30,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3258 conditions, 611 events. 345/611 cut-off events. For 9872/9872 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2491 event pairs, 97 based on Foata normal form. 2/613 useless extension candidates. Maximal degree in co-relation 3211. Up to 458 conditions per place. [2024-06-28 02:22:30,765 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 64 selfloop transitions, 41 changer transitions 0/107 dead transitions. [2024-06-28 02:22:30,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 107 transitions, 1125 flow [2024-06-28 02:22:30,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:30,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:30,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-28 02:22:30,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-28 02:22:30,767 INFO L175 Difference]: Start difference. First operand has 102 places, 93 transitions, 809 flow. Second operand 8 states and 91 transitions. [2024-06-28 02:22:30,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 107 transitions, 1125 flow [2024-06-28 02:22:30,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 107 transitions, 1055 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:30,781 INFO L231 Difference]: Finished difference. Result has 106 places, 95 transitions, 850 flow [2024-06-28 02:22:30,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=850, PETRI_PLACES=106, PETRI_TRANSITIONS=95} [2024-06-28 02:22:30,781 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-28 02:22:30,781 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 95 transitions, 850 flow [2024-06-28 02:22:30,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:30,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:30,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:30,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:22:30,782 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:30,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:30,782 INFO L85 PathProgramCache]: Analyzing trace with hash -537352997, now seen corresponding path program 6 times [2024-06-28 02:22:30,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:30,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554169755] [2024-06-28 02:22:30,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:30,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:31,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:31,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:31,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554169755] [2024-06-28 02:22:31,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554169755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:31,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:31,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:31,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107556907] [2024-06-28 02:22:31,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:31,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:31,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:31,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:31,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:31,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:22:31,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 95 transitions, 850 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:31,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:31,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:22:31,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:31,871 INFO L124 PetriNetUnfolderBase]: 313/575 cut-off events. [2024-06-28 02:22:31,871 INFO L125 PetriNetUnfolderBase]: For 10290/10292 co-relation queries the response was YES. [2024-06-28 02:22:31,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3161 conditions, 575 events. 313/575 cut-off events. For 10290/10292 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2388 event pairs, 68 based on Foata normal form. 2/575 useless extension candidates. Maximal degree in co-relation 3112. Up to 396 conditions per place. [2024-06-28 02:22:31,875 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 65 selfloop transitions, 33 changer transitions 0/108 dead transitions. [2024-06-28 02:22:31,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 108 transitions, 1098 flow [2024-06-28 02:22:31,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:31,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:31,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-28 02:22:31,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 02:22:31,876 INFO L175 Difference]: Start difference. First operand has 106 places, 95 transitions, 850 flow. Second operand 7 states and 88 transitions. [2024-06-28 02:22:31,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 108 transitions, 1098 flow [2024-06-28 02:22:31,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 108 transitions, 1027 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:31,890 INFO L231 Difference]: Finished difference. Result has 108 places, 97 transitions, 874 flow [2024-06-28 02:22:31,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=874, PETRI_PLACES=108, PETRI_TRANSITIONS=97} [2024-06-28 02:22:31,892 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-06-28 02:22:31,892 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 97 transitions, 874 flow [2024-06-28 02:22:31,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:31,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:31,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:31,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:22:31,893 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:31,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:31,893 INFO L85 PathProgramCache]: Analyzing trace with hash -537346053, now seen corresponding path program 5 times [2024-06-28 02:22:31,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:31,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801626587] [2024-06-28 02:22:31,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:31,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:32,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:32,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801626587] [2024-06-28 02:22:32,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801626587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:32,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:32,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:32,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603529581] [2024-06-28 02:22:32,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:32,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:32,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:32,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:32,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:32,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:32,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 97 transitions, 874 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:32,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:32,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:32,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:32,652 INFO L124 PetriNetUnfolderBase]: 342/607 cut-off events. [2024-06-28 02:22:32,653 INFO L125 PetriNetUnfolderBase]: For 11058/11058 co-relation queries the response was YES. [2024-06-28 02:22:32,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3342 conditions, 607 events. 342/607 cut-off events. For 11058/11058 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2469 event pairs, 106 based on Foata normal form. 2/609 useless extension candidates. Maximal degree in co-relation 3292. Up to 455 conditions per place. [2024-06-28 02:22:32,657 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 70 selfloop transitions, 39 changer transitions 0/111 dead transitions. [2024-06-28 02:22:32,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 1200 flow [2024-06-28 02:22:32,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:32,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:32,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 02:22:32,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-28 02:22:32,658 INFO L175 Difference]: Start difference. First operand has 108 places, 97 transitions, 874 flow. Second operand 8 states and 92 transitions. [2024-06-28 02:22:32,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 1200 flow [2024-06-28 02:22:32,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 111 transitions, 1121 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:32,676 INFO L231 Difference]: Finished difference. Result has 111 places, 99 transitions, 900 flow [2024-06-28 02:22:32,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=900, PETRI_PLACES=111, PETRI_TRANSITIONS=99} [2024-06-28 02:22:32,677 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-28 02:22:32,677 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 99 transitions, 900 flow [2024-06-28 02:22:32,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:32,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:32,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:32,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:22:32,677 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:32,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:32,678 INFO L85 PathProgramCache]: Analyzing trace with hash -528764261, now seen corresponding path program 1 times [2024-06-28 02:22:32,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:32,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685102735] [2024-06-28 02:22:32,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:32,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:33,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:33,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685102735] [2024-06-28 02:22:33,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685102735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:33,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:33,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:33,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932263752] [2024-06-28 02:22:33,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:33,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:33,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:33,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:33,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:33,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:33,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 99 transitions, 900 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:33,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:33,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:33,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:33,945 INFO L124 PetriNetUnfolderBase]: 340/602 cut-off events. [2024-06-28 02:22:33,945 INFO L125 PetriNetUnfolderBase]: For 11074/11074 co-relation queries the response was YES. [2024-06-28 02:22:33,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3328 conditions, 602 events. 340/602 cut-off events. For 11074/11074 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2406 event pairs, 149 based on Foata normal form. 1/603 useless extension candidates. Maximal degree in co-relation 3277. Up to 575 conditions per place. [2024-06-28 02:22:33,949 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 92 selfloop transitions, 14 changer transitions 0/108 dead transitions. [2024-06-28 02:22:33,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 108 transitions, 1142 flow [2024-06-28 02:22:33,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:33,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:33,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-28 02:22:33,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31640625 [2024-06-28 02:22:33,950 INFO L175 Difference]: Start difference. First operand has 111 places, 99 transitions, 900 flow. Second operand 8 states and 81 transitions. [2024-06-28 02:22:33,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 108 transitions, 1142 flow [2024-06-28 02:22:33,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 108 transitions, 1078 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:33,967 INFO L231 Difference]: Finished difference. Result has 114 places, 101 transitions, 888 flow [2024-06-28 02:22:33,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=888, PETRI_PLACES=114, PETRI_TRANSITIONS=101} [2024-06-28 02:22:33,968 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-28 02:22:33,968 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 101 transitions, 888 flow [2024-06-28 02:22:33,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:33,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:33,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:33,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:22:33,969 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:33,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:33,969 INFO L85 PathProgramCache]: Analyzing trace with hash -816257388, now seen corresponding path program 1 times [2024-06-28 02:22:33,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:33,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487759168] [2024-06-28 02:22:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:33,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:34,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:34,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:34,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487759168] [2024-06-28 02:22:34,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487759168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:34,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:34,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:34,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381732576] [2024-06-28 02:22:34,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:34,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:34,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:34,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:34,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:34,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:34,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 101 transitions, 888 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:34,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:34,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:34,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:35,087 INFO L124 PetriNetUnfolderBase]: 346/612 cut-off events. [2024-06-28 02:22:35,087 INFO L125 PetriNetUnfolderBase]: For 11989/11989 co-relation queries the response was YES. [2024-06-28 02:22:35,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3367 conditions, 612 events. 346/612 cut-off events. For 11989/11989 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2443 event pairs, 86 based on Foata normal form. 2/614 useless extension candidates. Maximal degree in co-relation 3315. Up to 524 conditions per place. [2024-06-28 02:22:35,091 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 95 selfloop transitions, 23 changer transitions 0/120 dead transitions. [2024-06-28 02:22:35,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 120 transitions, 1184 flow [2024-06-28 02:22:35,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:35,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:35,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 02:22:35,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-28 02:22:35,093 INFO L175 Difference]: Start difference. First operand has 114 places, 101 transitions, 888 flow. Second operand 9 states and 100 transitions. [2024-06-28 02:22:35,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 120 transitions, 1184 flow [2024-06-28 02:22:35,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 120 transitions, 1152 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:35,110 INFO L231 Difference]: Finished difference. Result has 117 places, 103 transitions, 929 flow [2024-06-28 02:22:35,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=929, PETRI_PLACES=117, PETRI_TRANSITIONS=103} [2024-06-28 02:22:35,111 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-28 02:22:35,112 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 103 transitions, 929 flow [2024-06-28 02:22:35,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:35,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:35,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:35,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:22:35,112 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:35,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:35,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1025602172, now seen corresponding path program 2 times [2024-06-28 02:22:35,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:35,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187977773] [2024-06-28 02:22:35,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:35,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:35,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:35,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:35,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187977773] [2024-06-28 02:22:35,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187977773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:35,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:35,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:35,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291424209] [2024-06-28 02:22:35,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:35,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:35,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:35,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:35,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:36,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:36,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 103 transitions, 929 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:36,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:36,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:36,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:36,311 INFO L124 PetriNetUnfolderBase]: 352/622 cut-off events. [2024-06-28 02:22:36,311 INFO L125 PetriNetUnfolderBase]: For 12996/12996 co-relation queries the response was YES. [2024-06-28 02:22:36,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3516 conditions, 622 events. 352/622 cut-off events. For 12996/12996 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2504 event pairs, 66 based on Foata normal form. 2/624 useless extension candidates. Maximal degree in co-relation 3463. Up to 534 conditions per place. [2024-06-28 02:22:36,332 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 97 selfloop transitions, 23 changer transitions 0/122 dead transitions. [2024-06-28 02:22:36,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 122 transitions, 1233 flow [2024-06-28 02:22:36,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:36,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:36,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 02:22:36,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 02:22:36,337 INFO L175 Difference]: Start difference. First operand has 117 places, 103 transitions, 929 flow. Second operand 9 states and 102 transitions. [2024-06-28 02:22:36,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 122 transitions, 1233 flow [2024-06-28 02:22:36,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 122 transitions, 1176 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:36,353 INFO L231 Difference]: Finished difference. Result has 119 places, 105 transitions, 949 flow [2024-06-28 02:22:36,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=949, PETRI_PLACES=119, PETRI_TRANSITIONS=105} [2024-06-28 02:22:36,354 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-28 02:22:36,354 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 105 transitions, 949 flow [2024-06-28 02:22:36,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:36,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:36,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:36,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:22:36,354 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:36,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:36,355 INFO L85 PathProgramCache]: Analyzing trace with hash 693278762, now seen corresponding path program 3 times [2024-06-28 02:22:36,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:36,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965951086] [2024-06-28 02:22:36,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:36,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:37,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:37,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:37,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965951086] [2024-06-28 02:22:37,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965951086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:37,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:37,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:37,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005741038] [2024-06-28 02:22:37,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:37,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:37,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:37,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:37,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:37,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:37,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 105 transitions, 949 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:37,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:37,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:37,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:37,518 INFO L124 PetriNetUnfolderBase]: 400/703 cut-off events. [2024-06-28 02:22:37,518 INFO L125 PetriNetUnfolderBase]: For 15047/15049 co-relation queries the response was YES. [2024-06-28 02:22:37,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3992 conditions, 703 events. 400/703 cut-off events. For 15047/15049 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2944 event pairs, 62 based on Foata normal form. 4/707 useless extension candidates. Maximal degree in co-relation 3938. Up to 494 conditions per place. [2024-06-28 02:22:37,523 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 89 selfloop transitions, 50 changer transitions 0/141 dead transitions. [2024-06-28 02:22:37,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 141 transitions, 1501 flow [2024-06-28 02:22:37,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:37,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-28 02:22:37,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-28 02:22:37,524 INFO L175 Difference]: Start difference. First operand has 119 places, 105 transitions, 949 flow. Second operand 8 states and 98 transitions. [2024-06-28 02:22:37,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 141 transitions, 1501 flow [2024-06-28 02:22:37,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 141 transitions, 1432 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:37,544 INFO L231 Difference]: Finished difference. Result has 123 places, 124 transitions, 1234 flow [2024-06-28 02:22:37,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1234, PETRI_PLACES=123, PETRI_TRANSITIONS=124} [2024-06-28 02:22:37,544 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-28 02:22:37,545 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 124 transitions, 1234 flow [2024-06-28 02:22:37,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:37,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:37,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:37,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:22:37,545 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:37,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:37,546 INFO L85 PathProgramCache]: Analyzing trace with hash 349736188, now seen corresponding path program 4 times [2024-06-28 02:22:37,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:37,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856141683] [2024-06-28 02:22:37,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:37,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:38,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:38,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856141683] [2024-06-28 02:22:38,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856141683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:38,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:38,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:38,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601824862] [2024-06-28 02:22:38,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:38,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:38,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:38,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:38,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:38,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:38,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 124 transitions, 1234 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:38,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:38,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:38,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:38,766 INFO L124 PetriNetUnfolderBase]: 428/749 cut-off events. [2024-06-28 02:22:38,766 INFO L125 PetriNetUnfolderBase]: For 18301/18301 co-relation queries the response was YES. [2024-06-28 02:22:38,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4636 conditions, 749 events. 428/749 cut-off events. For 18301/18301 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3182 event pairs, 70 based on Foata normal form. 4/753 useless extension candidates. Maximal degree in co-relation 4578. Up to 558 conditions per place. [2024-06-28 02:22:38,772 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 97 selfloop transitions, 52 changer transitions 0/151 dead transitions. [2024-06-28 02:22:38,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 151 transitions, 1772 flow [2024-06-28 02:22:38,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:38,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:38,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 02:22:38,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-28 02:22:38,773 INFO L175 Difference]: Start difference. First operand has 123 places, 124 transitions, 1234 flow. Second operand 9 states and 106 transitions. [2024-06-28 02:22:38,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 151 transitions, 1772 flow [2024-06-28 02:22:38,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 151 transitions, 1720 flow, removed 25 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:38,797 INFO L231 Difference]: Finished difference. Result has 132 places, 132 transitions, 1453 flow [2024-06-28 02:22:38,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1453, PETRI_PLACES=132, PETRI_TRANSITIONS=132} [2024-06-28 02:22:38,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-28 02:22:38,797 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 132 transitions, 1453 flow [2024-06-28 02:22:38,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:38,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:38,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:38,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:22:38,798 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:38,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:38,798 INFO L85 PathProgramCache]: Analyzing trace with hash 693284559, now seen corresponding path program 1 times [2024-06-28 02:22:38,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:38,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336385463] [2024-06-28 02:22:38,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:38,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:39,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:39,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:39,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336385463] [2024-06-28 02:22:39,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336385463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:39,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:39,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:39,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562020182] [2024-06-28 02:22:39,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:39,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:39,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:39,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:39,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:39,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:39,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 132 transitions, 1453 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:39,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:39,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:39,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:39,857 INFO L124 PetriNetUnfolderBase]: 431/755 cut-off events. [2024-06-28 02:22:39,857 INFO L125 PetriNetUnfolderBase]: For 18906/18906 co-relation queries the response was YES. [2024-06-28 02:22:39,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4877 conditions, 755 events. 431/755 cut-off events. For 18906/18906 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3243 event pairs, 132 based on Foata normal form. 1/756 useless extension candidates. Maximal degree in co-relation 4815. Up to 675 conditions per place. [2024-06-28 02:22:39,862 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 115 selfloop transitions, 31 changer transitions 0/148 dead transitions. [2024-06-28 02:22:39,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 148 transitions, 1815 flow [2024-06-28 02:22:39,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:39,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:39,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 02:22:39,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-28 02:22:39,863 INFO L175 Difference]: Start difference. First operand has 132 places, 132 transitions, 1453 flow. Second operand 9 states and 97 transitions. [2024-06-28 02:22:39,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 148 transitions, 1815 flow [2024-06-28 02:22:39,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 148 transitions, 1729 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:39,891 INFO L231 Difference]: Finished difference. Result has 136 places, 134 transitions, 1466 flow [2024-06-28 02:22:39,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1466, PETRI_PLACES=136, PETRI_TRANSITIONS=134} [2024-06-28 02:22:39,892 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-28 02:22:39,892 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 134 transitions, 1466 flow [2024-06-28 02:22:39,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:39,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:39,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:39,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:22:39,893 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:39,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:39,893 INFO L85 PathProgramCache]: Analyzing trace with hash 955858532, now seen corresponding path program 5 times [2024-06-28 02:22:39,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:39,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25026307] [2024-06-28 02:22:39,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:39,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:40,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:40,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25026307] [2024-06-28 02:22:40,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25026307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:40,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:40,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:40,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896236323] [2024-06-28 02:22:40,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:40,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:40,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:40,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:40,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:40,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:40,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 134 transitions, 1466 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:40,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:40,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:40,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:41,259 INFO L124 PetriNetUnfolderBase]: 427/748 cut-off events. [2024-06-28 02:22:41,259 INFO L125 PetriNetUnfolderBase]: For 19257/19257 co-relation queries the response was YES. [2024-06-28 02:22:41,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4822 conditions, 748 events. 427/748 cut-off events. For 19257/19257 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3206 event pairs, 71 based on Foata normal form. 2/750 useless extension candidates. Maximal degree in co-relation 4758. Up to 560 conditions per place. [2024-06-28 02:22:41,264 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 98 selfloop transitions, 51 changer transitions 0/151 dead transitions. [2024-06-28 02:22:41,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 151 transitions, 1818 flow [2024-06-28 02:22:41,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:41,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:41,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 02:22:41,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-28 02:22:41,265 INFO L175 Difference]: Start difference. First operand has 136 places, 134 transitions, 1466 flow. Second operand 9 states and 105 transitions. [2024-06-28 02:22:41,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 151 transitions, 1818 flow [2024-06-28 02:22:41,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 151 transitions, 1745 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:41,298 INFO L231 Difference]: Finished difference. Result has 138 places, 134 transitions, 1503 flow [2024-06-28 02:22:41,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1393, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1503, PETRI_PLACES=138, PETRI_TRANSITIONS=134} [2024-06-28 02:22:41,298 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2024-06-28 02:22:41,299 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 134 transitions, 1503 flow [2024-06-28 02:22:41,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:41,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:41,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:41,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:22:41,299 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:41,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:41,300 INFO L85 PathProgramCache]: Analyzing trace with hash 497636046, now seen corresponding path program 1 times [2024-06-28 02:22:41,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:41,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160466600] [2024-06-28 02:22:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:41,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:41,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:41,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:41,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160466600] [2024-06-28 02:22:41,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160466600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:41,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:41,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:41,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018646160] [2024-06-28 02:22:41,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:41,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:41,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:41,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:41,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:42,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:42,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 134 transitions, 1503 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:42,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:42,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:42,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:42,274 INFO L124 PetriNetUnfolderBase]: 433/760 cut-off events. [2024-06-28 02:22:42,274 INFO L125 PetriNetUnfolderBase]: For 20608/20608 co-relation queries the response was YES. [2024-06-28 02:22:42,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4965 conditions, 760 events. 433/760 cut-off events. For 20608/20608 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3311 event pairs, 106 based on Foata normal form. 2/762 useless extension candidates. Maximal degree in co-relation 4900. Up to 688 conditions per place. [2024-06-28 02:22:42,279 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 125 selfloop transitions, 25 changer transitions 0/152 dead transitions. [2024-06-28 02:22:42,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 152 transitions, 1877 flow [2024-06-28 02:22:42,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:22:42,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:22:42,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 02:22:42,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-28 02:22:42,280 INFO L175 Difference]: Start difference. First operand has 138 places, 134 transitions, 1503 flow. Second operand 10 states and 105 transitions. [2024-06-28 02:22:42,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 152 transitions, 1877 flow [2024-06-28 02:22:42,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 152 transitions, 1747 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 02:22:42,314 INFO L231 Difference]: Finished difference. Result has 140 places, 136 transitions, 1452 flow [2024-06-28 02:22:42,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1452, PETRI_PLACES=140, PETRI_TRANSITIONS=136} [2024-06-28 02:22:42,315 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-28 02:22:42,315 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 136 transitions, 1452 flow [2024-06-28 02:22:42,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:42,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:42,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:42,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:22:42,315 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:42,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:42,316 INFO L85 PathProgramCache]: Analyzing trace with hash -690310808, now seen corresponding path program 6 times [2024-06-28 02:22:42,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:42,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809247015] [2024-06-28 02:22:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:42,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:43,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:43,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809247015] [2024-06-28 02:22:43,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809247015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:43,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:43,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:43,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588449625] [2024-06-28 02:22:43,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:43,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:43,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:43,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:43,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:43,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:43,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 136 transitions, 1452 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:43,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:43,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:43,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:43,544 INFO L124 PetriNetUnfolderBase]: 439/769 cut-off events. [2024-06-28 02:22:43,544 INFO L125 PetriNetUnfolderBase]: For 21537/21537 co-relation queries the response was YES. [2024-06-28 02:22:43,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5002 conditions, 769 events. 439/769 cut-off events. For 21537/21537 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3311 event pairs, 100 based on Foata normal form. 2/771 useless extension candidates. Maximal degree in co-relation 4936. Up to 634 conditions per place. [2024-06-28 02:22:43,549 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 113 selfloop transitions, 37 changer transitions 0/152 dead transitions. [2024-06-28 02:22:43,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 152 transitions, 1826 flow [2024-06-28 02:22:43,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:43,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:43,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 02:22:43,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-28 02:22:43,550 INFO L175 Difference]: Start difference. First operand has 140 places, 136 transitions, 1452 flow. Second operand 8 states and 90 transitions. [2024-06-28 02:22:43,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 152 transitions, 1826 flow [2024-06-28 02:22:43,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 152 transitions, 1763 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 02:22:43,585 INFO L231 Difference]: Finished difference. Result has 140 places, 138 transitions, 1514 flow [2024-06-28 02:22:43,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1514, PETRI_PLACES=140, PETRI_TRANSITIONS=138} [2024-06-28 02:22:43,585 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-28 02:22:43,585 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 138 transitions, 1514 flow [2024-06-28 02:22:43,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:43,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:43,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:43,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:22:43,586 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:43,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:43,586 INFO L85 PathProgramCache]: Analyzing trace with hash -855390126, now seen corresponding path program 7 times [2024-06-28 02:22:43,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:43,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818608606] [2024-06-28 02:22:43,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:43,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:44,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:44,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818608606] [2024-06-28 02:22:44,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818608606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:44,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:44,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:44,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683176477] [2024-06-28 02:22:44,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:44,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:44,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:44,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:44,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:44,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:44,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 138 transitions, 1514 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:44,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:44,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:44,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:44,986 INFO L124 PetriNetUnfolderBase]: 461/804 cut-off events. [2024-06-28 02:22:44,986 INFO L125 PetriNetUnfolderBase]: For 24290/24290 co-relation queries the response was YES. [2024-06-28 02:22:44,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 804 events. 461/804 cut-off events. For 24290/24290 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3488 event pairs, 70 based on Foata normal form. 2/806 useless extension candidates. Maximal degree in co-relation 5331. Up to 534 conditions per place. [2024-06-28 02:22:44,991 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 90 selfloop transitions, 69 changer transitions 0/161 dead transitions. [2024-06-28 02:22:44,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 161 transitions, 2066 flow [2024-06-28 02:22:44,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:44,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 02:22:44,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-28 02:22:44,993 INFO L175 Difference]: Start difference. First operand has 140 places, 138 transitions, 1514 flow. Second operand 8 states and 94 transitions. [2024-06-28 02:22:44,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 161 transitions, 2066 flow [2024-06-28 02:22:45,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 161 transitions, 1989 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:45,029 INFO L231 Difference]: Finished difference. Result has 143 places, 146 transitions, 1751 flow [2024-06-28 02:22:45,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1751, PETRI_PLACES=143, PETRI_TRANSITIONS=146} [2024-06-28 02:22:45,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-28 02:22:45,030 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 146 transitions, 1751 flow [2024-06-28 02:22:45,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:45,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:45,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:45,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:22:45,031 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:45,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:45,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1768090284, now seen corresponding path program 8 times [2024-06-28 02:22:45,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:45,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274575519] [2024-06-28 02:22:45,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:45,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:45,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:45,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:45,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274575519] [2024-06-28 02:22:45,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274575519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:45,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:45,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:45,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757490776] [2024-06-28 02:22:45,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:45,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:45,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:45,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:45,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:45,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:45,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 146 transitions, 1751 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:45,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:45,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:45,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:46,180 INFO L124 PetriNetUnfolderBase]: 453/792 cut-off events. [2024-06-28 02:22:46,181 INFO L125 PetriNetUnfolderBase]: For 25126/25126 co-relation queries the response was YES. [2024-06-28 02:22:46,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5418 conditions, 792 events. 453/792 cut-off events. For 25126/25126 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3439 event pairs, 64 based on Foata normal form. 4/796 useless extension candidates. Maximal degree in co-relation 5349. Up to 528 conditions per place. [2024-06-28 02:22:46,185 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 88 selfloop transitions, 71 changer transitions 0/161 dead transitions. [2024-06-28 02:22:46,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 161 transitions, 2119 flow [2024-06-28 02:22:46,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:46,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:46,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 02:22:46,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-28 02:22:46,187 INFO L175 Difference]: Start difference. First operand has 143 places, 146 transitions, 1751 flow. Second operand 8 states and 93 transitions. [2024-06-28 02:22:46,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 161 transitions, 2119 flow [2024-06-28 02:22:46,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 161 transitions, 1982 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:46,229 INFO L231 Difference]: Finished difference. Result has 146 places, 146 transitions, 1771 flow [2024-06-28 02:22:46,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1771, PETRI_PLACES=146, PETRI_TRANSITIONS=146} [2024-06-28 02:22:46,230 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-06-28 02:22:46,230 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 146 transitions, 1771 flow [2024-06-28 02:22:46,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:46,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:46,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:46,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:22:46,230 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:46,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:46,231 INFO L85 PathProgramCache]: Analyzing trace with hash -993912479, now seen corresponding path program 2 times [2024-06-28 02:22:46,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:46,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454697480] [2024-06-28 02:22:46,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:46,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:47,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:47,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454697480] [2024-06-28 02:22:47,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454697480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:47,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:47,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:47,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175704534] [2024-06-28 02:22:47,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:47,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:47,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:47,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:47,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:47,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:47,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 146 transitions, 1771 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:47,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:47,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:47,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:47,393 INFO L124 PetriNetUnfolderBase]: 451/790 cut-off events. [2024-06-28 02:22:47,393 INFO L125 PetriNetUnfolderBase]: For 22500/22500 co-relation queries the response was YES. [2024-06-28 02:22:47,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5432 conditions, 790 events. 451/790 cut-off events. For 22500/22500 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3451 event pairs, 129 based on Foata normal form. 1/791 useless extension candidates. Maximal degree in co-relation 5362. Up to 679 conditions per place. [2024-06-28 02:22:47,399 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 115 selfloop transitions, 41 changer transitions 0/158 dead transitions. [2024-06-28 02:22:47,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 158 transitions, 2123 flow [2024-06-28 02:22:47,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:47,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:47,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 02:22:47,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-28 02:22:47,400 INFO L175 Difference]: Start difference. First operand has 146 places, 146 transitions, 1771 flow. Second operand 8 states and 87 transitions. [2024-06-28 02:22:47,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 158 transitions, 2123 flow [2024-06-28 02:22:47,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 158 transitions, 1958 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:47,443 INFO L231 Difference]: Finished difference. Result has 147 places, 146 transitions, 1703 flow [2024-06-28 02:22:47,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1703, PETRI_PLACES=147, PETRI_TRANSITIONS=146} [2024-06-28 02:22:47,444 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-28 02:22:47,444 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 146 transitions, 1703 flow [2024-06-28 02:22:47,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:47,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:47,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:47,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:22:47,447 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:47,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:47,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1426518778, now seen corresponding path program 2 times [2024-06-28 02:22:47,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:47,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437848326] [2024-06-28 02:22:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:47,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:48,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:48,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:48,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437848326] [2024-06-28 02:22:48,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437848326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:48,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:48,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:48,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195495146] [2024-06-28 02:22:48,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:48,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:48,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:48,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:48,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:48,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:48,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 146 transitions, 1703 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:48,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:48,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:48,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:48,427 INFO L124 PetriNetUnfolderBase]: 457/801 cut-off events. [2024-06-28 02:22:48,427 INFO L125 PetriNetUnfolderBase]: For 23906/23906 co-relation queries the response was YES. [2024-06-28 02:22:48,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5415 conditions, 801 events. 457/801 cut-off events. For 23906/23906 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3542 event pairs, 105 based on Foata normal form. 2/803 useless extension candidates. Maximal degree in co-relation 5344. Up to 699 conditions per place. [2024-06-28 02:22:48,433 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 128 selfloop transitions, 32 changer transitions 0/162 dead transitions. [2024-06-28 02:22:48,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 162 transitions, 2095 flow [2024-06-28 02:22:48,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:48,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:48,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 02:22:48,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 02:22:48,434 INFO L175 Difference]: Start difference. First operand has 147 places, 146 transitions, 1703 flow. Second operand 9 states and 96 transitions. [2024-06-28 02:22:48,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 162 transitions, 2095 flow [2024-06-28 02:22:48,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 162 transitions, 1947 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 02:22:48,477 INFO L231 Difference]: Finished difference. Result has 147 places, 148 transitions, 1655 flow [2024-06-28 02:22:48,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1555, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1655, PETRI_PLACES=147, PETRI_TRANSITIONS=148} [2024-06-28 02:22:48,477 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-28 02:22:48,477 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 148 transitions, 1655 flow [2024-06-28 02:22:48,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:48,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:48,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:48,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:22:48,478 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:48,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:48,478 INFO L85 PathProgramCache]: Analyzing trace with hash 175639868, now seen corresponding path program 9 times [2024-06-28 02:22:48,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:48,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826040523] [2024-06-28 02:22:48,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:48,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:49,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:49,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:49,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826040523] [2024-06-28 02:22:49,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826040523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:49,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:49,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:49,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98257939] [2024-06-28 02:22:49,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:49,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:49,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:49,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:49,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:49,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:49,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 148 transitions, 1655 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:49,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:49,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:49,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:49,669 INFO L124 PetriNetUnfolderBase]: 463/810 cut-off events. [2024-06-28 02:22:49,669 INFO L125 PetriNetUnfolderBase]: For 24034/24034 co-relation queries the response was YES. [2024-06-28 02:22:49,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5475 conditions, 810 events. 463/810 cut-off events. For 24034/24034 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3539 event pairs, 80 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 5403. Up to 490 conditions per place. [2024-06-28 02:22:49,675 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 96 selfloop transitions, 68 changer transitions 0/166 dead transitions. [2024-06-28 02:22:49,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 166 transitions, 2145 flow [2024-06-28 02:22:49,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:49,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:49,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-28 02:22:49,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-28 02:22:49,676 INFO L175 Difference]: Start difference. First operand has 147 places, 148 transitions, 1655 flow. Second operand 8 states and 98 transitions. [2024-06-28 02:22:49,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 166 transitions, 2145 flow [2024-06-28 02:22:49,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 166 transitions, 2063 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:49,720 INFO L231 Difference]: Finished difference. Result has 148 places, 150 transitions, 1754 flow [2024-06-28 02:22:49,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1754, PETRI_PLACES=148, PETRI_TRANSITIONS=150} [2024-06-28 02:22:49,721 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-28 02:22:49,721 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 150 transitions, 1754 flow [2024-06-28 02:22:49,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:49,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:49,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:49,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:22:49,722 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:49,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:49,723 INFO L85 PathProgramCache]: Analyzing trace with hash 441345084, now seen corresponding path program 3 times [2024-06-28 02:22:49,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:49,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312514968] [2024-06-28 02:22:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:49,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:50,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:50,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312514968] [2024-06-28 02:22:50,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312514968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:50,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:50,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:50,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820256557] [2024-06-28 02:22:50,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:50,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:50,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:50,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:50,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:50,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:50,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 150 transitions, 1754 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:50,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:50,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:50,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:50,803 INFO L124 PetriNetUnfolderBase]: 489/852 cut-off events. [2024-06-28 02:22:50,803 INFO L125 PetriNetUnfolderBase]: For 27281/27281 co-relation queries the response was YES. [2024-06-28 02:22:50,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5871 conditions, 852 events. 489/852 cut-off events. For 27281/27281 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3785 event pairs, 104 based on Foata normal form. 2/854 useless extension candidates. Maximal degree in co-relation 5798. Up to 592 conditions per place. [2024-06-28 02:22:50,810 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 109 selfloop transitions, 63 changer transitions 0/174 dead transitions. [2024-06-28 02:22:50,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 174 transitions, 2374 flow [2024-06-28 02:22:50,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:22:50,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:22:50,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 02:22:50,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 02:22:50,813 INFO L175 Difference]: Start difference. First operand has 148 places, 150 transitions, 1754 flow. Second operand 10 states and 112 transitions. [2024-06-28 02:22:50,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 174 transitions, 2374 flow [2024-06-28 02:22:50,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 174 transitions, 2189 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:50,863 INFO L231 Difference]: Finished difference. Result has 154 places, 157 transitions, 1790 flow [2024-06-28 02:22:50,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1790, PETRI_PLACES=154, PETRI_TRANSITIONS=157} [2024-06-28 02:22:50,865 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-28 02:22:50,866 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 157 transitions, 1790 flow [2024-06-28 02:22:50,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:50,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:50,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:50,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:22:50,868 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:50,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:50,870 INFO L85 PathProgramCache]: Analyzing trace with hash 441671514, now seen corresponding path program 4 times [2024-06-28 02:22:50,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:50,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356564773] [2024-06-28 02:22:50,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:50,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:51,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:51,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356564773] [2024-06-28 02:22:51,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356564773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:51,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:51,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:51,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947352201] [2024-06-28 02:22:51,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:51,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:51,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:51,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:51,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:51,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:51,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 157 transitions, 1790 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:51,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:51,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:51,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:51,697 INFO L124 PetriNetUnfolderBase]: 491/855 cut-off events. [2024-06-28 02:22:51,697 INFO L125 PetriNetUnfolderBase]: For 27817/27817 co-relation queries the response was YES. [2024-06-28 02:22:51,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5820 conditions, 855 events. 491/855 cut-off events. For 27817/27817 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3785 event pairs, 183 based on Foata normal form. 4/859 useless extension candidates. Maximal degree in co-relation 5746. Up to 804 conditions per place. [2024-06-28 02:22:51,703 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 149 selfloop transitions, 19 changer transitions 0/170 dead transitions. [2024-06-28 02:22:51,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 170 transitions, 2254 flow [2024-06-28 02:22:51,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:51,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:51,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-28 02:22:51,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3263888888888889 [2024-06-28 02:22:51,704 INFO L175 Difference]: Start difference. First operand has 154 places, 157 transitions, 1790 flow. Second operand 9 states and 94 transitions. [2024-06-28 02:22:51,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 170 transitions, 2254 flow [2024-06-28 02:22:51,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 170 transitions, 2148 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:51,754 INFO L231 Difference]: Finished difference. Result has 159 places, 159 transitions, 1766 flow [2024-06-28 02:22:51,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1766, PETRI_PLACES=159, PETRI_TRANSITIONS=159} [2024-06-28 02:22:51,755 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 128 predicate places. [2024-06-28 02:22:51,755 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 159 transitions, 1766 flow [2024-06-28 02:22:51,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:51,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:51,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:51,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:22:51,756 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:51,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:51,756 INFO L85 PathProgramCache]: Analyzing trace with hash 778635762, now seen corresponding path program 10 times [2024-06-28 02:22:51,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:51,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748042388] [2024-06-28 02:22:51,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:51,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:52,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:52,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:52,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748042388] [2024-06-28 02:22:52,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748042388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:52,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:52,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:52,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815846351] [2024-06-28 02:22:52,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:52,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:52,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:52,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:52,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:52,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:52,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 159 transitions, 1766 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:52,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:52,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:52,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:53,077 INFO L124 PetriNetUnfolderBase]: 487/850 cut-off events. [2024-06-28 02:22:53,078 INFO L125 PetriNetUnfolderBase]: For 26365/26365 co-relation queries the response was YES. [2024-06-28 02:22:53,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5722 conditions, 850 events. 487/850 cut-off events. For 26365/26365 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3752 event pairs, 72 based on Foata normal form. 2/852 useless extension candidates. Maximal degree in co-relation 5645. Up to 533 conditions per place. [2024-06-28 02:22:53,084 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 92 selfloop transitions, 79 changer transitions 0/173 dead transitions. [2024-06-28 02:22:53,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 173 transitions, 2158 flow [2024-06-28 02:22:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:53,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:53,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 02:22:53,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-28 02:22:53,085 INFO L175 Difference]: Start difference. First operand has 159 places, 159 transitions, 1766 flow. Second operand 8 states and 94 transitions. [2024-06-28 02:22:53,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 173 transitions, 2158 flow [2024-06-28 02:22:53,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 173 transitions, 2098 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:53,136 INFO L231 Difference]: Finished difference. Result has 160 places, 159 transitions, 1869 flow [2024-06-28 02:22:53,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1869, PETRI_PLACES=160, PETRI_TRANSITIONS=159} [2024-06-28 02:22:53,136 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-28 02:22:53,136 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 159 transitions, 1869 flow [2024-06-28 02:22:53,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:53,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:53,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:53,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:22:53,137 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:53,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:53,137 INFO L85 PathProgramCache]: Analyzing trace with hash 432148314, now seen corresponding path program 5 times [2024-06-28 02:22:53,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:53,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94244400] [2024-06-28 02:22:53,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:53,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:53,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:53,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:53,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94244400] [2024-06-28 02:22:53,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94244400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:53,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:53,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:53,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111850168] [2024-06-28 02:22:53,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:53,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:53,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:53,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:53,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:53,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:53,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 159 transitions, 1869 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:53,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:53,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:53,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:54,255 INFO L124 PetriNetUnfolderBase]: 493/860 cut-off events. [2024-06-28 02:22:54,255 INFO L125 PetriNetUnfolderBase]: For 28599/28599 co-relation queries the response was YES. [2024-06-28 02:22:54,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5968 conditions, 860 events. 493/860 cut-off events. For 28599/28599 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3867 event pairs, 100 based on Foata normal form. 2/862 useless extension candidates. Maximal degree in co-relation 5890. Up to 593 conditions per place. [2024-06-28 02:22:54,261 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 114 selfloop transitions, 61 changer transitions 0/177 dead transitions. [2024-06-28 02:22:54,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 177 transitions, 2389 flow [2024-06-28 02:22:54,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:22:54,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:22:54,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 02:22:54,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 02:22:54,263 INFO L175 Difference]: Start difference. First operand has 160 places, 159 transitions, 1869 flow. Second operand 10 states and 112 transitions. [2024-06-28 02:22:54,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 177 transitions, 2389 flow [2024-06-28 02:22:54,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 177 transitions, 2204 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:54,312 INFO L231 Difference]: Finished difference. Result has 163 places, 161 transitions, 1847 flow [2024-06-28 02:22:54,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1847, PETRI_PLACES=163, PETRI_TRANSITIONS=161} [2024-06-28 02:22:54,313 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-28 02:22:54,313 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 161 transitions, 1847 flow [2024-06-28 02:22:54,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:54,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:54,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:54,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:22:54,313 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:54,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:54,314 INFO L85 PathProgramCache]: Analyzing trace with hash 522143188, now seen corresponding path program 6 times [2024-06-28 02:22:54,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:54,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371434288] [2024-06-28 02:22:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:54,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:55,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:55,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371434288] [2024-06-28 02:22:55,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371434288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:55,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:55,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:55,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604728124] [2024-06-28 02:22:55,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:55,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:55,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:55,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:55,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:55,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:55,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 161 transitions, 1847 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:55,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:55,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:55,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:55,443 INFO L124 PetriNetUnfolderBase]: 494/862 cut-off events. [2024-06-28 02:22:55,443 INFO L125 PetriNetUnfolderBase]: For 25127/25127 co-relation queries the response was YES. [2024-06-28 02:22:55,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5790 conditions, 862 events. 494/862 cut-off events. For 25127/25127 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3873 event pairs, 116 based on Foata normal form. 2/864 useless extension candidates. Maximal degree in co-relation 5711. Up to 595 conditions per place. [2024-06-28 02:22:55,449 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 118 selfloop transitions, 59 changer transitions 0/179 dead transitions. [2024-06-28 02:22:55,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 179 transitions, 2373 flow [2024-06-28 02:22:55,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:22:55,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:22:55,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 02:22:55,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-28 02:22:55,450 INFO L175 Difference]: Start difference. First operand has 163 places, 161 transitions, 1847 flow. Second operand 10 states and 113 transitions. [2024-06-28 02:22:55,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 179 transitions, 2373 flow [2024-06-28 02:22:55,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 179 transitions, 2247 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 02:22:55,499 INFO L231 Difference]: Finished difference. Result has 164 places, 163 transitions, 1878 flow [2024-06-28 02:22:55,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1878, PETRI_PLACES=164, PETRI_TRANSITIONS=163} [2024-06-28 02:22:55,499 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-28 02:22:55,500 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 163 transitions, 1878 flow [2024-06-28 02:22:55,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:55,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:55,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:55,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:22:55,500 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:55,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:55,501 INFO L85 PathProgramCache]: Analyzing trace with hash 788178802, now seen corresponding path program 1 times [2024-06-28 02:22:55,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:55,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155296808] [2024-06-28 02:22:55,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:55,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:56,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:56,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155296808] [2024-06-28 02:22:56,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155296808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:56,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:56,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:22:56,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458760756] [2024-06-28 02:22:56,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:56,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:22:56,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:56,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:22:56,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:22:56,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:22:56,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 163 transitions, 1878 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:56,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:56,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:22:56,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:56,776 INFO L124 PetriNetUnfolderBase]: 491/856 cut-off events. [2024-06-28 02:22:56,776 INFO L125 PetriNetUnfolderBase]: For 24569/24569 co-relation queries the response was YES. [2024-06-28 02:22:56,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5718 conditions, 856 events. 491/856 cut-off events. For 24569/24569 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3798 event pairs, 188 based on Foata normal form. 2/858 useless extension candidates. Maximal degree in co-relation 5640. Up to 822 conditions per place. [2024-06-28 02:22:56,782 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 155 selfloop transitions, 16 changer transitions 0/173 dead transitions. [2024-06-28 02:22:56,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 173 transitions, 2242 flow [2024-06-28 02:22:56,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:22:56,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:22:56,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-28 02:22:56,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-28 02:22:56,785 INFO L175 Difference]: Start difference. First operand has 164 places, 163 transitions, 1878 flow. Second operand 10 states and 95 transitions. [2024-06-28 02:22:56,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 173 transitions, 2242 flow [2024-06-28 02:22:56,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 173 transitions, 2141 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:56,839 INFO L231 Difference]: Finished difference. Result has 167 places, 163 transitions, 1813 flow [2024-06-28 02:22:56,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1813, PETRI_PLACES=167, PETRI_TRANSITIONS=163} [2024-06-28 02:22:56,839 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-28 02:22:56,839 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 163 transitions, 1813 flow [2024-06-28 02:22:56,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:56,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:56,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:56,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:22:56,840 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:56,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:56,840 INFO L85 PathProgramCache]: Analyzing trace with hash -641342946, now seen corresponding path program 1 times [2024-06-28 02:22:56,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:56,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790124703] [2024-06-28 02:22:56,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:56,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:57,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:57,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:57,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790124703] [2024-06-28 02:22:57,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790124703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:57,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:57,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:22:57,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212442897] [2024-06-28 02:22:57,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:57,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:22:57,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:57,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:22:57,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:22:57,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:22:57,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 163 transitions, 1813 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:57,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:57,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:22:57,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:58,278 INFO L124 PetriNetUnfolderBase]: 463/838 cut-off events. [2024-06-28 02:22:58,279 INFO L125 PetriNetUnfolderBase]: For 27713/27721 co-relation queries the response was YES. [2024-06-28 02:22:58,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5542 conditions, 838 events. 463/838 cut-off events. For 27713/27721 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3953 event pairs, 95 based on Foata normal form. 2/835 useless extension candidates. Maximal degree in co-relation 5463. Up to 663 conditions per place. [2024-06-28 02:22:58,285 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 131 selfloop transitions, 25 changer transitions 0/182 dead transitions. [2024-06-28 02:22:58,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 182 transitions, 2189 flow [2024-06-28 02:22:58,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:58,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 02:22:58,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-28 02:22:58,287 INFO L175 Difference]: Start difference. First operand has 167 places, 163 transitions, 1813 flow. Second operand 9 states and 107 transitions. [2024-06-28 02:22:58,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 182 transitions, 2189 flow [2024-06-28 02:22:58,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 182 transitions, 2144 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 02:22:58,342 INFO L231 Difference]: Finished difference. Result has 169 places, 165 transitions, 1847 flow [2024-06-28 02:22:58,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1847, PETRI_PLACES=169, PETRI_TRANSITIONS=165} [2024-06-28 02:22:58,342 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 138 predicate places. [2024-06-28 02:22:58,343 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 165 transitions, 1847 flow [2024-06-28 02:22:58,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:58,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:58,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:58,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:22:58,343 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:58,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:58,344 INFO L85 PathProgramCache]: Analyzing trace with hash -630182946, now seen corresponding path program 2 times [2024-06-28 02:22:58,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:58,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069168218] [2024-06-28 02:22:58,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:58,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:59,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:59,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:59,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069168218] [2024-06-28 02:22:59,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069168218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:59,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:59,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:22:59,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408817160] [2024-06-28 02:22:59,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:59,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:22:59,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:59,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:22:59,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:22:59,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:22:59,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 165 transitions, 1847 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:59,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:59,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:22:59,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:59,689 INFO L124 PetriNetUnfolderBase]: 466/846 cut-off events. [2024-06-28 02:22:59,689 INFO L125 PetriNetUnfolderBase]: For 29189/29193 co-relation queries the response was YES. [2024-06-28 02:22:59,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5660 conditions, 846 events. 466/846 cut-off events. For 29189/29193 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3996 event pairs, 102 based on Foata normal form. 2/843 useless extension candidates. Maximal degree in co-relation 5579. Up to 673 conditions per place. [2024-06-28 02:22:59,696 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 129 selfloop transitions, 27 changer transitions 0/182 dead transitions. [2024-06-28 02:22:59,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 182 transitions, 2219 flow [2024-06-28 02:22:59,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:59,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:59,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 02:22:59,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-28 02:22:59,697 INFO L175 Difference]: Start difference. First operand has 169 places, 165 transitions, 1847 flow. Second operand 9 states and 107 transitions. [2024-06-28 02:22:59,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 182 transitions, 2219 flow [2024-06-28 02:22:59,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 182 transitions, 2162 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:59,756 INFO L231 Difference]: Finished difference. Result has 172 places, 166 transitions, 1867 flow [2024-06-28 02:22:59,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1867, PETRI_PLACES=172, PETRI_TRANSITIONS=166} [2024-06-28 02:22:59,760 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-28 02:22:59,760 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 166 transitions, 1867 flow [2024-06-28 02:22:59,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:59,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:59,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:59,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:22:59,761 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:59,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:59,761 INFO L85 PathProgramCache]: Analyzing trace with hash -98484412, now seen corresponding path program 1 times [2024-06-28 02:22:59,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:59,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145745716] [2024-06-28 02:22:59,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:59,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:00,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:00,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:00,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145745716] [2024-06-28 02:23:00,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145745716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:00,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:00,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:00,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938394001] [2024-06-28 02:23:00,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:00,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:00,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:00,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:00,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:00,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:00,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 166 transitions, 1867 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:00,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:00,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:00,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:00,828 INFO L124 PetriNetUnfolderBase]: 510/895 cut-off events. [2024-06-28 02:23:00,828 INFO L125 PetriNetUnfolderBase]: For 28600/28600 co-relation queries the response was YES. [2024-06-28 02:23:00,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5904 conditions, 895 events. 510/895 cut-off events. For 28600/28600 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4057 event pairs, 92 based on Foata normal form. 2/897 useless extension candidates. Maximal degree in co-relation 5822. Up to 789 conditions per place. [2024-06-28 02:23:00,834 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 155 selfloop transitions, 29 changer transitions 0/186 dead transitions. [2024-06-28 02:23:00,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 186 transitions, 2313 flow [2024-06-28 02:23:00,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:00,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:00,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 02:23:00,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-28 02:23:00,852 INFO L175 Difference]: Start difference. First operand has 172 places, 166 transitions, 1867 flow. Second operand 10 states and 111 transitions. [2024-06-28 02:23:00,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 186 transitions, 2313 flow [2024-06-28 02:23:00,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 186 transitions, 2248 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:00,924 INFO L231 Difference]: Finished difference. Result has 175 places, 168 transitions, 1893 flow [2024-06-28 02:23:00,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1802, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1893, PETRI_PLACES=175, PETRI_TRANSITIONS=168} [2024-06-28 02:23:00,925 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-28 02:23:00,925 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 168 transitions, 1893 flow [2024-06-28 02:23:00,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:00,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:00,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:00,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:23:00,925 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:00,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:00,926 INFO L85 PathProgramCache]: Analyzing trace with hash 454207874, now seen corresponding path program 2 times [2024-06-28 02:23:00,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:00,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837952200] [2024-06-28 02:23:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:00,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:01,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:01,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837952200] [2024-06-28 02:23:01,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837952200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:01,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:01,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:01,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075791536] [2024-06-28 02:23:01,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:01,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:01,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:01,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:01,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:01,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:01,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 168 transitions, 1893 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:01,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:01,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:01,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:02,247 INFO L124 PetriNetUnfolderBase]: 516/906 cut-off events. [2024-06-28 02:23:02,248 INFO L125 PetriNetUnfolderBase]: For 30059/30059 co-relation queries the response was YES. [2024-06-28 02:23:02,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6003 conditions, 906 events. 516/906 cut-off events. For 30059/30059 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4138 event pairs, 113 based on Foata normal form. 2/908 useless extension candidates. Maximal degree in co-relation 5920. Up to 791 conditions per place. [2024-06-28 02:23:02,255 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 154 selfloop transitions, 32 changer transitions 0/188 dead transitions. [2024-06-28 02:23:02,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 188 transitions, 2345 flow [2024-06-28 02:23:02,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:02,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 02:23:02,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-28 02:23:02,257 INFO L175 Difference]: Start difference. First operand has 175 places, 168 transitions, 1893 flow. Second operand 10 states and 109 transitions. [2024-06-28 02:23:02,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 188 transitions, 2345 flow [2024-06-28 02:23:02,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 188 transitions, 2270 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:02,331 INFO L231 Difference]: Finished difference. Result has 177 places, 170 transitions, 1920 flow [2024-06-28 02:23:02,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1920, PETRI_PLACES=177, PETRI_TRANSITIONS=170} [2024-06-28 02:23:02,332 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-28 02:23:02,332 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 170 transitions, 1920 flow [2024-06-28 02:23:02,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:02,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:02,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:02,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:23:02,333 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:02,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:02,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1670556354, now seen corresponding path program 3 times [2024-06-28 02:23:02,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:02,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839798915] [2024-06-28 02:23:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:02,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:03,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:03,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839798915] [2024-06-28 02:23:03,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839798915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:03,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:03,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:03,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092669031] [2024-06-28 02:23:03,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:03,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:03,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:03,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:03,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:03,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:23:03,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 170 transitions, 1920 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:03,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:03,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:23:03,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:03,718 INFO L124 PetriNetUnfolderBase]: 482/880 cut-off events. [2024-06-28 02:23:03,719 INFO L125 PetriNetUnfolderBase]: For 31485/31487 co-relation queries the response was YES. [2024-06-28 02:23:03,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5893 conditions, 880 events. 482/880 cut-off events. For 31485/31487 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4244 event pairs, 78 based on Foata normal form. 2/880 useless extension candidates. Maximal degree in co-relation 5809. Up to 674 conditions per place. [2024-06-28 02:23:03,726 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 136 selfloop transitions, 27 changer transitions 0/189 dead transitions. [2024-06-28 02:23:03,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 189 transitions, 2314 flow [2024-06-28 02:23:03,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 02:23:03,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-28 02:23:03,727 INFO L175 Difference]: Start difference. First operand has 177 places, 170 transitions, 1920 flow. Second operand 9 states and 104 transitions. [2024-06-28 02:23:03,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 189 transitions, 2314 flow [2024-06-28 02:23:03,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 189 transitions, 2230 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:03,798 INFO L231 Difference]: Finished difference. Result has 178 places, 172 transitions, 1920 flow [2024-06-28 02:23:03,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1920, PETRI_PLACES=178, PETRI_TRANSITIONS=172} [2024-06-28 02:23:03,799 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 147 predicate places. [2024-06-28 02:23:03,799 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 172 transitions, 1920 flow [2024-06-28 02:23:03,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:03,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:03,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:03,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:23:03,799 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:03,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:03,800 INFO L85 PathProgramCache]: Analyzing trace with hash -101285882, now seen corresponding path program 4 times [2024-06-28 02:23:03,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:03,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206536727] [2024-06-28 02:23:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:03,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:04,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:04,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206536727] [2024-06-28 02:23:04,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206536727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:04,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:04,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:04,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61677539] [2024-06-28 02:23:04,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:04,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:04,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:04,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:04,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:04,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:23:04,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 172 transitions, 1920 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:04,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:04,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:23:04,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:05,310 INFO L124 PetriNetUnfolderBase]: 486/887 cut-off events. [2024-06-28 02:23:05,310 INFO L125 PetriNetUnfolderBase]: For 33284/33286 co-relation queries the response was YES. [2024-06-28 02:23:05,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5952 conditions, 887 events. 486/887 cut-off events. For 33284/33286 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4280 event pairs, 83 based on Foata normal form. 2/887 useless extension candidates. Maximal degree in co-relation 5867. Up to 717 conditions per place. [2024-06-28 02:23:05,316 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 137 selfloop transitions, 26 changer transitions 0/189 dead transitions. [2024-06-28 02:23:05,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 189 transitions, 2312 flow [2024-06-28 02:23:05,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:05,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:05,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 02:23:05,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-28 02:23:05,318 INFO L175 Difference]: Start difference. First operand has 178 places, 172 transitions, 1920 flow. Second operand 9 states and 109 transitions. [2024-06-28 02:23:05,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 189 transitions, 2312 flow [2024-06-28 02:23:05,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 189 transitions, 2216 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 02:23:05,391 INFO L231 Difference]: Finished difference. Result has 178 places, 173 transitions, 1902 flow [2024-06-28 02:23:05,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1902, PETRI_PLACES=178, PETRI_TRANSITIONS=173} [2024-06-28 02:23:05,392 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 147 predicate places. [2024-06-28 02:23:05,392 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 173 transitions, 1902 flow [2024-06-28 02:23:05,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:05,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:05,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:05,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:23:05,393 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:05,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:05,393 INFO L85 PathProgramCache]: Analyzing trace with hash -101346332, now seen corresponding path program 5 times [2024-06-28 02:23:05,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:05,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962195233] [2024-06-28 02:23:05,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:05,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:06,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:06,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962195233] [2024-06-28 02:23:06,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962195233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:06,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:06,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:06,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204009233] [2024-06-28 02:23:06,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:06,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:06,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:06,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:06,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:06,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:23:06,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 173 transitions, 1902 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:06,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:06,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:23:06,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:06,769 INFO L124 PetriNetUnfolderBase]: 495/906 cut-off events. [2024-06-28 02:23:06,769 INFO L125 PetriNetUnfolderBase]: For 34710/34712 co-relation queries the response was YES. [2024-06-28 02:23:06,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6004 conditions, 906 events. 495/906 cut-off events. For 34710/34712 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4433 event pairs, 81 based on Foata normal form. 2/906 useless extension candidates. Maximal degree in co-relation 5921. Up to 732 conditions per place. [2024-06-28 02:23:06,776 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 141 selfloop transitions, 25 changer transitions 0/192 dead transitions. [2024-06-28 02:23:06,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 192 transitions, 2310 flow [2024-06-28 02:23:06,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:06,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 02:23:06,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-28 02:23:06,777 INFO L175 Difference]: Start difference. First operand has 178 places, 173 transitions, 1902 flow. Second operand 9 states and 109 transitions. [2024-06-28 02:23:06,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 192 transitions, 2310 flow [2024-06-28 02:23:06,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 192 transitions, 2242 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:06,850 INFO L231 Difference]: Finished difference. Result has 181 places, 175 transitions, 1922 flow [2024-06-28 02:23:06,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1834, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1922, PETRI_PLACES=181, PETRI_TRANSITIONS=175} [2024-06-28 02:23:06,850 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-28 02:23:06,850 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 175 transitions, 1922 flow [2024-06-28 02:23:06,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:06,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:06,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:06,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:23:06,851 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:06,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:06,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1733546264, now seen corresponding path program 1 times [2024-06-28 02:23:06,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:06,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254142359] [2024-06-28 02:23:06,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:06,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:07,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:07,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:07,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254142359] [2024-06-28 02:23:07,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254142359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:07,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:07,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:07,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924163212] [2024-06-28 02:23:07,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:07,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:07,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:07,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:07,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:07,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:07,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 175 transitions, 1922 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:07,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:07,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:07,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:08,122 INFO L124 PetriNetUnfolderBase]: 541/957 cut-off events. [2024-06-28 02:23:08,122 INFO L125 PetriNetUnfolderBase]: For 35231/35231 co-relation queries the response was YES. [2024-06-28 02:23:08,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6308 conditions, 957 events. 541/957 cut-off events. For 35231/35231 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4559 event pairs, 150 based on Foata normal form. 1/958 useless extension candidates. Maximal degree in co-relation 6223. Up to 864 conditions per place. [2024-06-28 02:23:08,129 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 156 selfloop transitions, 35 changer transitions 0/193 dead transitions. [2024-06-28 02:23:08,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 193 transitions, 2392 flow [2024-06-28 02:23:08,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:08,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:08,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 02:23:08,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-28 02:23:08,130 INFO L175 Difference]: Start difference. First operand has 181 places, 175 transitions, 1922 flow. Second operand 10 states and 106 transitions. [2024-06-28 02:23:08,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 193 transitions, 2392 flow [2024-06-28 02:23:08,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 193 transitions, 2324 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:08,212 INFO L231 Difference]: Finished difference. Result has 185 places, 177 transitions, 1970 flow [2024-06-28 02:23:08,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1970, PETRI_PLACES=185, PETRI_TRANSITIONS=177} [2024-06-28 02:23:08,212 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-28 02:23:08,212 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 177 transitions, 1970 flow [2024-06-28 02:23:08,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:08,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:08,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:08,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:23:08,213 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:08,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:08,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1733361566, now seen corresponding path program 6 times [2024-06-28 02:23:08,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:08,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921953828] [2024-06-28 02:23:08,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:08,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:09,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:09,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:09,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921953828] [2024-06-28 02:23:09,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921953828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:09,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:09,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:09,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48593933] [2024-06-28 02:23:09,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:09,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:09,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:09,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:09,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:09,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:23:09,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 177 transitions, 1970 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:09,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:09,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:23:09,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:09,373 INFO L124 PetriNetUnfolderBase]: 498/913 cut-off events. [2024-06-28 02:23:09,373 INFO L125 PetriNetUnfolderBase]: For 37575/37579 co-relation queries the response was YES. [2024-06-28 02:23:09,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6132 conditions, 913 events. 498/913 cut-off events. For 37575/37579 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4483 event pairs, 79 based on Foata normal form. 2/911 useless extension candidates. Maximal degree in co-relation 6046. Up to 706 conditions per place. [2024-06-28 02:23:09,380 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 133 selfloop transitions, 36 changer transitions 0/195 dead transitions. [2024-06-28 02:23:09,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 195 transitions, 2384 flow [2024-06-28 02:23:09,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:09,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:09,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-28 02:23:09,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-28 02:23:09,381 INFO L175 Difference]: Start difference. First operand has 185 places, 177 transitions, 1970 flow. Second operand 9 states and 110 transitions. [2024-06-28 02:23:09,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 195 transitions, 2384 flow [2024-06-28 02:23:09,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 195 transitions, 2298 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:09,470 INFO L231 Difference]: Finished difference. Result has 186 places, 178 transitions, 1987 flow [2024-06-28 02:23:09,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1987, PETRI_PLACES=186, PETRI_TRANSITIONS=178} [2024-06-28 02:23:09,471 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-28 02:23:09,471 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 178 transitions, 1987 flow [2024-06-28 02:23:09,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:09,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:09,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:09,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:23:09,472 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:09,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:09,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1733366526, now seen corresponding path program 3 times [2024-06-28 02:23:09,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:09,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118911913] [2024-06-28 02:23:09,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:09,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:10,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:10,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:10,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118911913] [2024-06-28 02:23:10,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118911913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:10,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:10,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:10,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001941844] [2024-06-28 02:23:10,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:10,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:10,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:10,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:10,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:10,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:10,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 178 transitions, 1987 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:10,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:10,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:10,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:10,790 INFO L124 PetriNetUnfolderBase]: 561/990 cut-off events. [2024-06-28 02:23:10,791 INFO L125 PetriNetUnfolderBase]: For 41443/41443 co-relation queries the response was YES. [2024-06-28 02:23:10,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6699 conditions, 990 events. 561/990 cut-off events. For 41443/41443 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4692 event pairs, 92 based on Foata normal form. 2/992 useless extension candidates. Maximal degree in co-relation 6612. Up to 738 conditions per place. [2024-06-28 02:23:10,797 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 145 selfloop transitions, 55 changer transitions 0/202 dead transitions. [2024-06-28 02:23:10,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 202 transitions, 2605 flow [2024-06-28 02:23:10,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:10,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:10,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 02:23:10,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-28 02:23:10,798 INFO L175 Difference]: Start difference. First operand has 186 places, 178 transitions, 1987 flow. Second operand 10 states and 117 transitions. [2024-06-28 02:23:10,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 202 transitions, 2605 flow [2024-06-28 02:23:10,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 202 transitions, 2514 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:10,883 INFO L231 Difference]: Finished difference. Result has 189 places, 182 transitions, 2080 flow [2024-06-28 02:23:10,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1896, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2080, PETRI_PLACES=189, PETRI_TRANSITIONS=182} [2024-06-28 02:23:10,883 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-28 02:23:10,884 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 182 transitions, 2080 flow [2024-06-28 02:23:10,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:10,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:10,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:10,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:23:10,884 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:10,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:10,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1733546016, now seen corresponding path program 4 times [2024-06-28 02:23:10,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:10,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639108169] [2024-06-28 02:23:10,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:10,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:11,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:11,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639108169] [2024-06-28 02:23:11,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639108169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:11,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:11,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:11,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443910793] [2024-06-28 02:23:11,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:11,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:11,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:11,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:11,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:11,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:11,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 182 transitions, 2080 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:11,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:11,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:11,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:12,341 INFO L124 PetriNetUnfolderBase]: 573/1010 cut-off events. [2024-06-28 02:23:12,341 INFO L125 PetriNetUnfolderBase]: For 45665/45665 co-relation queries the response was YES. [2024-06-28 02:23:12,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6903 conditions, 1010 events. 573/1010 cut-off events. For 45665/45665 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4833 event pairs, 63 based on Foata normal form. 4/1014 useless extension candidates. Maximal degree in co-relation 6815. Up to 537 conditions per place. [2024-06-28 02:23:12,350 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 97 selfloop transitions, 108 changer transitions 0/207 dead transitions. [2024-06-28 02:23:12,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 207 transitions, 2756 flow [2024-06-28 02:23:12,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:12,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:12,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 02:23:12,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:23:12,351 INFO L175 Difference]: Start difference. First operand has 189 places, 182 transitions, 2080 flow. Second operand 9 states and 108 transitions. [2024-06-28 02:23:12,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 207 transitions, 2756 flow [2024-06-28 02:23:12,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 207 transitions, 2665 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:12,484 INFO L231 Difference]: Finished difference. Result has 192 places, 188 transitions, 2330 flow [2024-06-28 02:23:12,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1991, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2330, PETRI_PLACES=192, PETRI_TRANSITIONS=188} [2024-06-28 02:23:12,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-28 02:23:12,486 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 188 transitions, 2330 flow [2024-06-28 02:23:12,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:12,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:12,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:12,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:23:12,486 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:12,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:12,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1733539506, now seen corresponding path program 5 times [2024-06-28 02:23:12,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:12,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299453719] [2024-06-28 02:23:12,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:12,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:13,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:13,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299453719] [2024-06-28 02:23:13,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299453719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:13,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:13,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:13,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319706003] [2024-06-28 02:23:13,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:13,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:13,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:13,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:13,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:13,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:13,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 188 transitions, 2330 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:13,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:13,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:13,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:13,892 INFO L124 PetriNetUnfolderBase]: 569/1004 cut-off events. [2024-06-28 02:23:13,893 INFO L125 PetriNetUnfolderBase]: For 43239/43239 co-relation queries the response was YES. [2024-06-28 02:23:13,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7074 conditions, 1004 events. 569/1004 cut-off events. For 43239/43239 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4810 event pairs, 87 based on Foata normal form. 2/1006 useless extension candidates. Maximal degree in co-relation 6984. Up to 751 conditions per place. [2024-06-28 02:23:13,901 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 148 selfloop transitions, 58 changer transitions 0/208 dead transitions. [2024-06-28 02:23:13,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 208 transitions, 2808 flow [2024-06-28 02:23:13,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:13,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:13,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 02:23:13,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-28 02:23:13,902 INFO L175 Difference]: Start difference. First operand has 192 places, 188 transitions, 2330 flow. Second operand 10 states and 116 transitions. [2024-06-28 02:23:13,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 208 transitions, 2808 flow [2024-06-28 02:23:14,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 208 transitions, 2616 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:14,018 INFO L231 Difference]: Finished difference. Result has 197 places, 188 transitions, 2260 flow [2024-06-28 02:23:14,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2138, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2260, PETRI_PLACES=197, PETRI_TRANSITIONS=188} [2024-06-28 02:23:14,018 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-28 02:23:14,018 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 188 transitions, 2260 flow [2024-06-28 02:23:14,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:14,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:14,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:14,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:23:14,019 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:14,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:14,019 INFO L85 PathProgramCache]: Analyzing trace with hash 868071960, now seen corresponding path program 1 times [2024-06-28 02:23:14,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:14,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103601856] [2024-06-28 02:23:14,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:14,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:14,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:14,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:14,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103601856] [2024-06-28 02:23:14,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103601856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:14,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:14,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:14,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885932503] [2024-06-28 02:23:14,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:14,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:14,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:14,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:14,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:14,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:14,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 188 transitions, 2260 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:14,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:14,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:14,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:15,323 INFO L124 PetriNetUnfolderBase]: 575/1016 cut-off events. [2024-06-28 02:23:15,324 INFO L125 PetriNetUnfolderBase]: For 45145/45145 co-relation queries the response was YES. [2024-06-28 02:23:15,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7111 conditions, 1016 events. 575/1016 cut-off events. For 45145/45145 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4936 event pairs, 138 based on Foata normal form. 2/1018 useless extension candidates. Maximal degree in co-relation 7019. Up to 934 conditions per place. [2024-06-28 02:23:15,333 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 179 selfloop transitions, 27 changer transitions 0/208 dead transitions. [2024-06-28 02:23:15,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 208 transitions, 2766 flow [2024-06-28 02:23:15,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:23:15,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:23:15,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 02:23:15,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-28 02:23:15,334 INFO L175 Difference]: Start difference. First operand has 197 places, 188 transitions, 2260 flow. Second operand 11 states and 114 transitions. [2024-06-28 02:23:15,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 208 transitions, 2766 flow [2024-06-28 02:23:15,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 208 transitions, 2645 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:15,473 INFO L231 Difference]: Finished difference. Result has 200 places, 190 transitions, 2234 flow [2024-06-28 02:23:15,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2139, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2234, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2024-06-28 02:23:15,474 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 169 predicate places. [2024-06-28 02:23:15,474 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 2234 flow [2024-06-28 02:23:15,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:15,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:15,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:15,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:23:15,475 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:15,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:15,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1754299706, now seen corresponding path program 7 times [2024-06-28 02:23:15,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:15,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657875236] [2024-06-28 02:23:15,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:15,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:16,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:16,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657875236] [2024-06-28 02:23:16,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657875236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:16,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:16,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:16,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240800737] [2024-06-28 02:23:16,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:16,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:16,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:16,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:16,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:16,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:23:16,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 2234 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:16,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:16,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:23:16,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:16,981 INFO L124 PetriNetUnfolderBase]: 528/968 cut-off events. [2024-06-28 02:23:16,982 INFO L125 PetriNetUnfolderBase]: For 49311/49317 co-relation queries the response was YES. [2024-06-28 02:23:16,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6950 conditions, 968 events. 528/968 cut-off events. For 49311/49317 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4900 event pairs, 79 based on Foata normal form. 2/964 useless extension candidates. Maximal degree in co-relation 6857. Up to 733 conditions per place. [2024-06-28 02:23:16,990 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 149 selfloop transitions, 30 changer transitions 0/205 dead transitions. [2024-06-28 02:23:16,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 205 transitions, 2654 flow [2024-06-28 02:23:16,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:16,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 02:23:16,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-28 02:23:16,992 INFO L175 Difference]: Start difference. First operand has 200 places, 190 transitions, 2234 flow. Second operand 8 states and 94 transitions. [2024-06-28 02:23:16,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 205 transitions, 2654 flow [2024-06-28 02:23:17,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 205 transitions, 2583 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 02:23:17,109 INFO L231 Difference]: Finished difference. Result has 199 places, 191 transitions, 2261 flow [2024-06-28 02:23:17,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2163, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2261, PETRI_PLACES=199, PETRI_TRANSITIONS=191} [2024-06-28 02:23:17,110 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-28 02:23:17,110 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 191 transitions, 2261 flow [2024-06-28 02:23:17,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:17,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:17,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:17,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:23:17,111 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:17,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:17,111 INFO L85 PathProgramCache]: Analyzing trace with hash -864786508, now seen corresponding path program 8 times [2024-06-28 02:23:17,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:17,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230707983] [2024-06-28 02:23:17,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:17,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:18,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:18,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230707983] [2024-06-28 02:23:18,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230707983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:18,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:18,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:18,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18538998] [2024-06-28 02:23:18,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:18,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:18,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:18,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:18,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:18,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:23:18,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 191 transitions, 2261 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:18,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:18,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:23:18,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:18,580 INFO L124 PetriNetUnfolderBase]: 529/971 cut-off events. [2024-06-28 02:23:18,580 INFO L125 PetriNetUnfolderBase]: For 48644/48648 co-relation queries the response was YES. [2024-06-28 02:23:18,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6943 conditions, 971 events. 529/971 cut-off events. For 48644/48648 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4907 event pairs, 105 based on Foata normal form. 2/966 useless extension candidates. Maximal degree in co-relation 6849. Up to 770 conditions per place. [2024-06-28 02:23:18,589 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 148 selfloop transitions, 32 changer transitions 0/206 dead transitions. [2024-06-28 02:23:18,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 206 transitions, 2687 flow [2024-06-28 02:23:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:18,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 02:23:18,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:23:18,591 INFO L175 Difference]: Start difference. First operand has 199 places, 191 transitions, 2261 flow. Second operand 8 states and 96 transitions. [2024-06-28 02:23:18,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 206 transitions, 2687 flow [2024-06-28 02:23:18,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 206 transitions, 2599 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:18,703 INFO L231 Difference]: Finished difference. Result has 201 places, 192 transitions, 2276 flow [2024-06-28 02:23:18,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2179, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2276, PETRI_PLACES=201, PETRI_TRANSITIONS=192} [2024-06-28 02:23:18,703 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-28 02:23:18,703 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 192 transitions, 2276 flow [2024-06-28 02:23:18,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:18,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:18,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:18,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:23:18,704 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:18,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:18,704 INFO L85 PathProgramCache]: Analyzing trace with hash -861985038, now seen corresponding path program 6 times [2024-06-28 02:23:18,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:18,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464400303] [2024-06-28 02:23:18,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:18,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:19,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:19,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464400303] [2024-06-28 02:23:19,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464400303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:19,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:19,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:19,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288474233] [2024-06-28 02:23:19,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:19,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:19,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:19,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:19,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:19,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:19,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 192 transitions, 2276 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:19,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:19,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:19,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:19,866 INFO L124 PetriNetUnfolderBase]: 589/1041 cut-off events. [2024-06-28 02:23:19,867 INFO L125 PetriNetUnfolderBase]: For 44683/44683 co-relation queries the response was YES. [2024-06-28 02:23:19,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7238 conditions, 1041 events. 589/1041 cut-off events. For 44683/44683 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5062 event pairs, 123 based on Foata normal form. 2/1043 useless extension candidates. Maximal degree in co-relation 7143. Up to 878 conditions per place. [2024-06-28 02:23:19,876 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 165 selfloop transitions, 43 changer transitions 0/210 dead transitions. [2024-06-28 02:23:19,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 210 transitions, 2774 flow [2024-06-28 02:23:19,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:19,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 02:23:19,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:23:19,877 INFO L175 Difference]: Start difference. First operand has 201 places, 192 transitions, 2276 flow. Second operand 9 states and 99 transitions. [2024-06-28 02:23:19,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 210 transitions, 2774 flow [2024-06-28 02:23:19,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 210 transitions, 2693 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:19,990 INFO L231 Difference]: Finished difference. Result has 204 places, 194 transitions, 2333 flow [2024-06-28 02:23:19,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2195, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2333, PETRI_PLACES=204, PETRI_TRANSITIONS=194} [2024-06-28 02:23:19,991 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-28 02:23:19,991 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 194 transitions, 2333 flow [2024-06-28 02:23:19,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:19,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:19,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:19,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:23:19,992 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:19,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:19,992 INFO L85 PathProgramCache]: Analyzing trace with hash -746698828, now seen corresponding path program 9 times [2024-06-28 02:23:19,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:19,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14728203] [2024-06-28 02:23:19,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:19,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:21,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:21,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:21,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14728203] [2024-06-28 02:23:21,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14728203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:21,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:21,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:21,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961433096] [2024-06-28 02:23:21,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:21,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:21,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:21,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:21,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:21,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:23:21,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 194 transitions, 2333 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:21,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:21,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:23:21,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:21,470 INFO L124 PetriNetUnfolderBase]: 536/985 cut-off events. [2024-06-28 02:23:21,471 INFO L125 PetriNetUnfolderBase]: For 43175/43181 co-relation queries the response was YES. [2024-06-28 02:23:21,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6954 conditions, 985 events. 536/985 cut-off events. For 43175/43181 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5008 event pairs, 70 based on Foata normal form. 2/981 useless extension candidates. Maximal degree in co-relation 6858. Up to 741 conditions per place. [2024-06-28 02:23:21,479 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 139 selfloop transitions, 44 changer transitions 0/209 dead transitions. [2024-06-28 02:23:21,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 209 transitions, 2761 flow [2024-06-28 02:23:21,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:21,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 02:23:21,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-28 02:23:21,481 INFO L175 Difference]: Start difference. First operand has 204 places, 194 transitions, 2333 flow. Second operand 8 states and 97 transitions. [2024-06-28 02:23:21,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 209 transitions, 2761 flow [2024-06-28 02:23:21,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 209 transitions, 2669 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:21,578 INFO L231 Difference]: Finished difference. Result has 205 places, 195 transitions, 2359 flow [2024-06-28 02:23:21,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2359, PETRI_PLACES=205, PETRI_TRANSITIONS=195} [2024-06-28 02:23:21,579 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-28 02:23:21,579 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 195 transitions, 2359 flow [2024-06-28 02:23:21,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:21,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:21,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:21,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:23:21,579 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:21,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:21,580 INFO L85 PathProgramCache]: Analyzing trace with hash -746693868, now seen corresponding path program 7 times [2024-06-28 02:23:21,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:21,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123618945] [2024-06-28 02:23:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:21,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:22,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:22,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123618945] [2024-06-28 02:23:22,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123618945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:22,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:22,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:22,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754842898] [2024-06-28 02:23:22,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:22,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:22,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:22,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:22,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:22,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:22,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 195 transitions, 2359 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:22,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:22,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:22,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:23,371 INFO L124 PetriNetUnfolderBase]: 615/1084 cut-off events. [2024-06-28 02:23:23,372 INFO L125 PetriNetUnfolderBase]: For 47356/47356 co-relation queries the response was YES. [2024-06-28 02:23:23,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7646 conditions, 1084 events. 615/1084 cut-off events. For 47356/47356 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5307 event pairs, 92 based on Foata normal form. 2/1086 useless extension candidates. Maximal degree in co-relation 7549. Up to 701 conditions per place. [2024-06-28 02:23:23,381 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 134 selfloop transitions, 82 changer transitions 0/218 dead transitions. [2024-06-28 02:23:23,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 218 transitions, 3035 flow [2024-06-28 02:23:23,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:23,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:23,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 02:23:23,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-28 02:23:23,382 INFO L175 Difference]: Start difference. First operand has 205 places, 195 transitions, 2359 flow. Second operand 9 states and 105 transitions. [2024-06-28 02:23:23,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 218 transitions, 3035 flow [2024-06-28 02:23:23,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 218 transitions, 2931 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:23,498 INFO L231 Difference]: Finished difference. Result has 209 places, 201 transitions, 2567 flow [2024-06-28 02:23:23,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2567, PETRI_PLACES=209, PETRI_TRANSITIONS=201} [2024-06-28 02:23:23,499 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-06-28 02:23:23,499 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 201 transitions, 2567 flow [2024-06-28 02:23:23,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:23,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:23,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:23,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:23:23,499 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:23,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:23,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1023784418, now seen corresponding path program 2 times [2024-06-28 02:23:23,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:23,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471937752] [2024-06-28 02:23:23,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:23,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:24,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:24,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:24,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471937752] [2024-06-28 02:23:24,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471937752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:24,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:24,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:24,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228029646] [2024-06-28 02:23:24,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:24,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:24,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:24,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:24,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:24,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:24,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 201 transitions, 2567 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:24,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:24,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:24,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:24,877 INFO L124 PetriNetUnfolderBase]: 613/1082 cut-off events. [2024-06-28 02:23:24,877 INFO L125 PetriNetUnfolderBase]: For 45361/45361 co-relation queries the response was YES. [2024-06-28 02:23:24,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7724 conditions, 1082 events. 613/1082 cut-off events. For 45361/45361 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5328 event pairs, 158 based on Foata normal form. 1/1083 useless extension candidates. Maximal degree in co-relation 7625. Up to 947 conditions per place. [2024-06-28 02:23:24,887 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 166 selfloop transitions, 49 changer transitions 0/217 dead transitions. [2024-06-28 02:23:24,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 217 transitions, 3085 flow [2024-06-28 02:23:24,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:24,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:24,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 02:23:24,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 02:23:24,888 INFO L175 Difference]: Start difference. First operand has 209 places, 201 transitions, 2567 flow. Second operand 9 states and 96 transitions. [2024-06-28 02:23:24,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 217 transitions, 3085 flow [2024-06-28 02:23:24,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 217 transitions, 2975 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:24,996 INFO L231 Difference]: Finished difference. Result has 212 places, 203 transitions, 2613 flow [2024-06-28 02:23:24,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2457, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2613, PETRI_PLACES=212, PETRI_TRANSITIONS=203} [2024-06-28 02:23:24,996 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-28 02:23:24,997 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 203 transitions, 2613 flow [2024-06-28 02:23:24,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:24,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:24,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:24,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:23:24,997 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:24,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:24,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1023183014, now seen corresponding path program 8 times [2024-06-28 02:23:24,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:24,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110496851] [2024-06-28 02:23:24,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:24,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:25,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:25,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110496851] [2024-06-28 02:23:25,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110496851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:25,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:25,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:25,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913845645] [2024-06-28 02:23:25,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:25,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:25,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:25,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:25,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:25,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:25,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 203 transitions, 2613 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:25,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:25,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:25,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:26,331 INFO L124 PetriNetUnfolderBase]: 609/1075 cut-off events. [2024-06-28 02:23:26,332 INFO L125 PetriNetUnfolderBase]: For 43511/43511 co-relation queries the response was YES. [2024-06-28 02:23:26,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7637 conditions, 1075 events. 609/1075 cut-off events. For 43511/43511 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5255 event pairs, 79 based on Foata normal form. 2/1077 useless extension candidates. Maximal degree in co-relation 7537. Up to 695 conditions per place. [2024-06-28 02:23:26,341 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 134 selfloop transitions, 84 changer transitions 0/220 dead transitions. [2024-06-28 02:23:26,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 220 transitions, 3105 flow [2024-06-28 02:23:26,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:26,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 02:23:26,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-28 02:23:26,342 INFO L175 Difference]: Start difference. First operand has 212 places, 203 transitions, 2613 flow. Second operand 9 states and 104 transitions. [2024-06-28 02:23:26,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 220 transitions, 3105 flow [2024-06-28 02:23:26,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 220 transitions, 2965 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:26,465 INFO L231 Difference]: Finished difference. Result has 214 places, 203 transitions, 2651 flow [2024-06-28 02:23:26,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2473, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2651, PETRI_PLACES=214, PETRI_TRANSITIONS=203} [2024-06-28 02:23:26,465 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-28 02:23:26,466 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 203 transitions, 2651 flow [2024-06-28 02:23:26,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:26,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:26,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:26,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:23:26,466 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:26,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:26,466 INFO L85 PathProgramCache]: Analyzing trace with hash -574379566, now seen corresponding path program 2 times [2024-06-28 02:23:26,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:26,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942302245] [2024-06-28 02:23:26,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:26,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:27,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:27,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942302245] [2024-06-28 02:23:27,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942302245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:27,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:27,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:27,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266476438] [2024-06-28 02:23:27,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:27,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:27,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:27,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:27,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:27,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:27,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 203 transitions, 2651 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:27,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:27,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:27,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:27,685 INFO L124 PetriNetUnfolderBase]: 615/1087 cut-off events. [2024-06-28 02:23:27,685 INFO L125 PetriNetUnfolderBase]: For 44688/44688 co-relation queries the response was YES. [2024-06-28 02:23:27,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7764 conditions, 1087 events. 615/1087 cut-off events. For 44688/44688 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5399 event pairs, 138 based on Foata normal form. 2/1089 useless extension candidates. Maximal degree in co-relation 7663. Up to 967 conditions per place. [2024-06-28 02:23:27,698 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 183 selfloop transitions, 34 changer transitions 0/219 dead transitions. [2024-06-28 02:23:27,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 219 transitions, 3169 flow [2024-06-28 02:23:27,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:27,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:27,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 02:23:27,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-28 02:23:27,704 INFO L175 Difference]: Start difference. First operand has 214 places, 203 transitions, 2651 flow. Second operand 9 states and 97 transitions. [2024-06-28 02:23:27,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 219 transitions, 3169 flow [2024-06-28 02:23:27,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 219 transitions, 2988 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:27,828 INFO L231 Difference]: Finished difference. Result has 215 places, 205 transitions, 2588 flow [2024-06-28 02:23:27,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2588, PETRI_PLACES=215, PETRI_TRANSITIONS=205} [2024-06-28 02:23:27,829 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-28 02:23:27,829 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 205 transitions, 2588 flow [2024-06-28 02:23:27,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:27,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:27,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:27,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:23:27,829 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:27,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:27,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1000108806, now seen corresponding path program 10 times [2024-06-28 02:23:27,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:27,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087827016] [2024-06-28 02:23:27,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:27,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:29,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:29,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087827016] [2024-06-28 02:23:29,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087827016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:29,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:29,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:29,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057847274] [2024-06-28 02:23:29,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:29,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:29,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:29,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:29,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:29,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-28 02:23:29,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 205 transitions, 2588 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:29,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:29,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-28 02:23:29,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:29,611 INFO L124 PetriNetUnfolderBase]: 554/1017 cut-off events. [2024-06-28 02:23:29,611 INFO L125 PetriNetUnfolderBase]: For 43114/43122 co-relation queries the response was YES. [2024-06-28 02:23:29,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7284 conditions, 1017 events. 554/1017 cut-off events. For 43114/43122 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5176 event pairs, 76 based on Foata normal form. 2/1010 useless extension candidates. Maximal degree in co-relation 7183. Up to 765 conditions per place. [2024-06-28 02:23:29,619 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 150 selfloop transitions, 42 changer transitions 0/218 dead transitions. [2024-06-28 02:23:29,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 218 transitions, 3014 flow [2024-06-28 02:23:29,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 02:23:29,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-28 02:23:29,620 INFO L175 Difference]: Start difference. First operand has 215 places, 205 transitions, 2588 flow. Second operand 8 states and 97 transitions. [2024-06-28 02:23:29,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 218 transitions, 3014 flow [2024-06-28 02:23:29,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 218 transitions, 2932 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:29,738 INFO L231 Difference]: Finished difference. Result has 216 places, 205 transitions, 2594 flow [2024-06-28 02:23:29,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2506, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2594, PETRI_PLACES=216, PETRI_TRANSITIONS=205} [2024-06-28 02:23:29,738 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-28 02:23:29,738 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 205 transitions, 2594 flow [2024-06-28 02:23:29,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:29,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:29,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:29,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:23:29,739 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:29,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:29,739 INFO L85 PathProgramCache]: Analyzing trace with hash -999930866, now seen corresponding path program 9 times [2024-06-28 02:23:29,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:29,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279821515] [2024-06-28 02:23:29,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:29,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:30,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:30,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:30,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279821515] [2024-06-28 02:23:30,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279821515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:30,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:30,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:30,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934598218] [2024-06-28 02:23:30,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:30,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:30,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:30,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:30,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:30,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:30,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 205 transitions, 2594 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:30,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:30,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:30,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:30,988 INFO L124 PetriNetUnfolderBase]: 634/1117 cut-off events. [2024-06-28 02:23:30,988 INFO L125 PetriNetUnfolderBase]: For 44175/44175 co-relation queries the response was YES. [2024-06-28 02:23:30,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7881 conditions, 1117 events. 634/1117 cut-off events. For 44175/44175 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5507 event pairs, 102 based on Foata normal form. 2/1119 useless extension candidates. Maximal degree in co-relation 7779. Up to 615 conditions per place. [2024-06-28 02:23:30,997 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 144 selfloop transitions, 84 changer transitions 0/230 dead transitions. [2024-06-28 02:23:30,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 230 transitions, 3416 flow [2024-06-28 02:23:30,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:30,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:30,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 02:23:30,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 02:23:30,998 INFO L175 Difference]: Start difference. First operand has 216 places, 205 transitions, 2594 flow. Second operand 9 states and 112 transitions. [2024-06-28 02:23:30,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 230 transitions, 3416 flow [2024-06-28 02:23:31,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 230 transitions, 3278 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:31,125 INFO L231 Difference]: Finished difference. Result has 218 places, 211 transitions, 2735 flow [2024-06-28 02:23:31,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2456, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2735, PETRI_PLACES=218, PETRI_TRANSITIONS=211} [2024-06-28 02:23:31,125 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-28 02:23:31,126 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 211 transitions, 2735 flow [2024-06-28 02:23:31,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:31,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:31,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:31,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:23:31,126 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:31,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:31,127 INFO L85 PathProgramCache]: Analyzing trace with hash 796797394, now seen corresponding path program 3 times [2024-06-28 02:23:31,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:31,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15565767] [2024-06-28 02:23:31,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:31,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:32,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:32,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:32,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15565767] [2024-06-28 02:23:32,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15565767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:32,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:32,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:32,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468849522] [2024-06-28 02:23:32,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:32,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:32,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:32,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:32,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:32,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:32,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 211 transitions, 2735 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:32,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:32,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:32,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:32,446 INFO L124 PetriNetUnfolderBase]: 640/1128 cut-off events. [2024-06-28 02:23:32,446 INFO L125 PetriNetUnfolderBase]: For 46677/46677 co-relation queries the response was YES. [2024-06-28 02:23:32,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8011 conditions, 1128 events. 640/1128 cut-off events. For 46677/46677 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5628 event pairs, 135 based on Foata normal form. 2/1130 useless extension candidates. Maximal degree in co-relation 7908. Up to 947 conditions per place. [2024-06-28 02:23:32,456 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 166 selfloop transitions, 58 changer transitions 0/226 dead transitions. [2024-06-28 02:23:32,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 226 transitions, 3267 flow [2024-06-28 02:23:32,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:32,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 02:23:32,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:23:32,457 INFO L175 Difference]: Start difference. First operand has 218 places, 211 transitions, 2735 flow. Second operand 9 states and 99 transitions. [2024-06-28 02:23:32,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 226 transitions, 3267 flow [2024-06-28 02:23:32,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 226 transitions, 2960 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:32,588 INFO L231 Difference]: Finished difference. Result has 220 places, 213 transitions, 2590 flow [2024-06-28 02:23:32,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2590, PETRI_PLACES=220, PETRI_TRANSITIONS=213} [2024-06-28 02:23:32,589 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-28 02:23:32,589 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 213 transitions, 2590 flow [2024-06-28 02:23:32,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:32,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:32,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:32,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:23:32,590 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:32,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:32,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1336628260, now seen corresponding path program 4 times [2024-06-28 02:23:32,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:32,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736597171] [2024-06-28 02:23:32,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:32,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:33,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:33,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:33,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736597171] [2024-06-28 02:23:33,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736597171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:33,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:33,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:33,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48063836] [2024-06-28 02:23:33,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:33,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:33,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:33,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:33,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:33,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:33,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 213 transitions, 2590 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:33,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:33,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:33,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:33,788 INFO L124 PetriNetUnfolderBase]: 636/1120 cut-off events. [2024-06-28 02:23:33,788 INFO L125 PetriNetUnfolderBase]: For 44345/44345 co-relation queries the response was YES. [2024-06-28 02:23:33,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7527 conditions, 1120 events. 636/1120 cut-off events. For 44345/44345 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5562 event pairs, 235 based on Foata normal form. 2/1122 useless extension candidates. Maximal degree in co-relation 7426. Up to 1070 conditions per place. [2024-06-28 02:23:33,797 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 203 selfloop transitions, 19 changer transitions 0/224 dead transitions. [2024-06-28 02:23:33,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 224 transitions, 3066 flow [2024-06-28 02:23:33,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:33,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:33,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-28 02:23:33,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-28 02:23:33,798 INFO L175 Difference]: Start difference. First operand has 220 places, 213 transitions, 2590 flow. Second operand 10 states and 100 transitions. [2024-06-28 02:23:33,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 224 transitions, 3066 flow [2024-06-28 02:23:33,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 224 transitions, 2920 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:33,908 INFO L231 Difference]: Finished difference. Result has 223 places, 213 transitions, 2487 flow [2024-06-28 02:23:33,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2444, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2487, PETRI_PLACES=223, PETRI_TRANSITIONS=213} [2024-06-28 02:23:33,909 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-28 02:23:33,909 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 213 transitions, 2487 flow [2024-06-28 02:23:33,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:33,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:33,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:33,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:23:33,909 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:33,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:33,910 INFO L85 PathProgramCache]: Analyzing trace with hash 511451446, now seen corresponding path program 10 times [2024-06-28 02:23:33,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:33,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080171784] [2024-06-28 02:23:33,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:33,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:34,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:34,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080171784] [2024-06-28 02:23:34,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080171784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:34,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:34,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:34,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969005877] [2024-06-28 02:23:34,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:34,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:34,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:34,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:34,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:34,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:34,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 213 transitions, 2487 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:34,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:34,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:34,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:35,055 INFO L124 PetriNetUnfolderBase]: 632/1115 cut-off events. [2024-06-28 02:23:35,056 INFO L125 PetriNetUnfolderBase]: For 42753/42753 co-relation queries the response was YES. [2024-06-28 02:23:35,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7289 conditions, 1115 events. 632/1115 cut-off events. For 42753/42753 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5527 event pairs, 80 based on Foata normal form. 2/1117 useless extension candidates. Maximal degree in co-relation 7187. Up to 616 conditions per place. [2024-06-28 02:23:35,064 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 132 selfloop transitions, 96 changer transitions 0/230 dead transitions. [2024-06-28 02:23:35,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 230 transitions, 3105 flow [2024-06-28 02:23:35,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:35,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:35,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 02:23:35,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-28 02:23:35,065 INFO L175 Difference]: Start difference. First operand has 223 places, 213 transitions, 2487 flow. Second operand 9 states and 107 transitions. [2024-06-28 02:23:35,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 230 transitions, 3105 flow [2024-06-28 02:23:35,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 230 transitions, 3037 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 02:23:35,192 INFO L231 Difference]: Finished difference. Result has 223 places, 213 transitions, 2616 flow [2024-06-28 02:23:35,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2419, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2616, PETRI_PLACES=223, PETRI_TRANSITIONS=213} [2024-06-28 02:23:35,193 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-28 02:23:35,193 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 213 transitions, 2616 flow [2024-06-28 02:23:35,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:35,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:35,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:35,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 02:23:35,193 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:35,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:35,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1631847460, now seen corresponding path program 5 times [2024-06-28 02:23:35,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:35,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934263411] [2024-06-28 02:23:35,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:35,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:35,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:35,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:35,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934263411] [2024-06-28 02:23:35,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934263411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:35,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:35,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:35,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114694980] [2024-06-28 02:23:35,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:35,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:35,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:35,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:35,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:35,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:35,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 213 transitions, 2616 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:35,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:35,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:35,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:36,298 INFO L124 PetriNetUnfolderBase]: 638/1126 cut-off events. [2024-06-28 02:23:36,298 INFO L125 PetriNetUnfolderBase]: For 45655/45655 co-relation queries the response was YES. [2024-06-28 02:23:36,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7577 conditions, 1126 events. 638/1126 cut-off events. For 45655/45655 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5642 event pairs, 133 based on Foata normal form. 2/1128 useless extension candidates. Maximal degree in co-relation 7474. Up to 945 conditions per place. [2024-06-28 02:23:36,308 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 174 selfloop transitions, 52 changer transitions 0/228 dead transitions. [2024-06-28 02:23:36,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 228 transitions, 3156 flow [2024-06-28 02:23:36,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:36,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:36,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 02:23:36,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-28 02:23:36,309 INFO L175 Difference]: Start difference. First operand has 223 places, 213 transitions, 2616 flow. Second operand 9 states and 100 transitions. [2024-06-28 02:23:36,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 228 transitions, 3156 flow [2024-06-28 02:23:36,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 228 transitions, 2957 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:36,436 INFO L231 Difference]: Finished difference. Result has 225 places, 215 transitions, 2571 flow [2024-06-28 02:23:36,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2417, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2571, PETRI_PLACES=225, PETRI_TRANSITIONS=215} [2024-06-28 02:23:36,437 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-28 02:23:36,437 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 215 transitions, 2571 flow [2024-06-28 02:23:36,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:36,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:36,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:36,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 02:23:36,438 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:36,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:36,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1000103846, now seen corresponding path program 11 times [2024-06-28 02:23:36,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:36,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502582216] [2024-06-28 02:23:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:36,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:37,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:37,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:37,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502582216] [2024-06-28 02:23:37,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502582216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:37,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:37,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:37,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077938929] [2024-06-28 02:23:37,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:37,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:37,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:37,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:37,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:37,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:37,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 215 transitions, 2571 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:37,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:37,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:37,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:37,543 INFO L124 PetriNetUnfolderBase]: 634/1119 cut-off events. [2024-06-28 02:23:37,543 INFO L125 PetriNetUnfolderBase]: For 43394/43394 co-relation queries the response was YES. [2024-06-28 02:23:37,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7332 conditions, 1119 events. 634/1119 cut-off events. For 43394/43394 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5552 event pairs, 106 based on Foata normal form. 2/1121 useless extension candidates. Maximal degree in co-relation 7228. Up to 623 conditions per place. [2024-06-28 02:23:37,552 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 141 selfloop transitions, 87 changer transitions 0/230 dead transitions. [2024-06-28 02:23:37,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 230 transitions, 3077 flow [2024-06-28 02:23:37,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:37,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:37,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 02:23:37,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-28 02:23:37,553 INFO L175 Difference]: Start difference. First operand has 225 places, 215 transitions, 2571 flow. Second operand 9 states and 106 transitions. [2024-06-28 02:23:37,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 230 transitions, 3077 flow [2024-06-28 02:23:37,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 230 transitions, 2923 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:37,669 INFO L231 Difference]: Finished difference. Result has 227 places, 215 transitions, 2596 flow [2024-06-28 02:23:37,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2417, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2596, PETRI_PLACES=227, PETRI_TRANSITIONS=215} [2024-06-28 02:23:37,670 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-28 02:23:37,670 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 215 transitions, 2596 flow [2024-06-28 02:23:37,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:37,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:37,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:37,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 02:23:37,671 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:37,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:37,671 INFO L85 PathProgramCache]: Analyzing trace with hash -993428678, now seen corresponding path program 6 times [2024-06-28 02:23:37,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:37,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516062765] [2024-06-28 02:23:37,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:37,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:38,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:38,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:38,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516062765] [2024-06-28 02:23:38,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516062765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:38,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:38,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:38,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554777902] [2024-06-28 02:23:38,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:38,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:38,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:38,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:38,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:38,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:38,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 215 transitions, 2596 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:38,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:38,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:38,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:38,976 INFO L124 PetriNetUnfolderBase]: 635/1122 cut-off events. [2024-06-28 02:23:38,976 INFO L125 PetriNetUnfolderBase]: For 44056/44056 co-relation queries the response was YES. [2024-06-28 02:23:38,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7374 conditions, 1122 events. 635/1122 cut-off events. For 44056/44056 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5621 event pairs, 142 based on Foata normal form. 2/1124 useless extension candidates. Maximal degree in co-relation 7269. Up to 941 conditions per place. [2024-06-28 02:23:38,986 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 180 selfloop transitions, 48 changer transitions 0/230 dead transitions. [2024-06-28 02:23:38,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 230 transitions, 3144 flow [2024-06-28 02:23:38,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:38,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:38,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 02:23:38,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-28 02:23:38,987 INFO L175 Difference]: Start difference. First operand has 227 places, 215 transitions, 2596 flow. Second operand 9 states and 101 transitions. [2024-06-28 02:23:38,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 230 transitions, 3144 flow [2024-06-28 02:23:39,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 230 transitions, 2902 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 02:23:39,116 INFO L231 Difference]: Finished difference. Result has 227 places, 217 transitions, 2504 flow [2024-06-28 02:23:39,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2354, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2504, PETRI_PLACES=227, PETRI_TRANSITIONS=217} [2024-06-28 02:23:39,117 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-28 02:23:39,117 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 217 transitions, 2504 flow [2024-06-28 02:23:39,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:39,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:39,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:39,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 02:23:39,117 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:39,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:39,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1800932947, now seen corresponding path program 1 times [2024-06-28 02:23:39,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:39,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699612639] [2024-06-28 02:23:39,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:39,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:39,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:40,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699612639] [2024-06-28 02:23:40,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699612639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:40,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:40,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:40,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552355177] [2024-06-28 02:23:40,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:40,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:40,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:40,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:40,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:40,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:40,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 217 transitions, 2504 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:40,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:40,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:40,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:40,506 INFO L124 PetriNetUnfolderBase]: 639/1128 cut-off events. [2024-06-28 02:23:40,506 INFO L125 PetriNetUnfolderBase]: For 44615/44615 co-relation queries the response was YES. [2024-06-28 02:23:40,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7245 conditions, 1128 events. 639/1128 cut-off events. For 44615/44615 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5624 event pairs, 114 based on Foata normal form. 2/1130 useless extension candidates. Maximal degree in co-relation 7139. Up to 1024 conditions per place. [2024-06-28 02:23:40,517 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 206 selfloop transitions, 28 changer transitions 0/236 dead transitions. [2024-06-28 02:23:40,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 236 transitions, 3038 flow [2024-06-28 02:23:40,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:40,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:23:40,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:23:40,518 INFO L175 Difference]: Start difference. First operand has 227 places, 217 transitions, 2504 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:23:40,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 236 transitions, 3038 flow [2024-06-28 02:23:40,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 236 transitions, 2914 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:40,700 INFO L231 Difference]: Finished difference. Result has 230 places, 218 transitions, 2456 flow [2024-06-28 02:23:40,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2380, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2456, PETRI_PLACES=230, PETRI_TRANSITIONS=218} [2024-06-28 02:23:40,701 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-28 02:23:40,701 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 218 transitions, 2456 flow [2024-06-28 02:23:40,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:40,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:40,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:40,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 02:23:40,701 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:40,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:40,702 INFO L85 PathProgramCache]: Analyzing trace with hash 2069372911, now seen corresponding path program 2 times [2024-06-28 02:23:40,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:40,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991951088] [2024-06-28 02:23:40,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:40,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:41,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:41,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:41,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991951088] [2024-06-28 02:23:41,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991951088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:41,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:41,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:41,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536668869] [2024-06-28 02:23:41,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:41,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:41,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:41,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:41,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:41,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:41,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 218 transitions, 2456 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:41,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:41,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:41,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:42,118 INFO L124 PetriNetUnfolderBase]: 643/1137 cut-off events. [2024-06-28 02:23:42,118 INFO L125 PetriNetUnfolderBase]: For 46163/46163 co-relation queries the response was YES. [2024-06-28 02:23:42,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7248 conditions, 1137 events. 643/1137 cut-off events. For 46163/46163 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5718 event pairs, 132 based on Foata normal form. 2/1139 useless extension candidates. Maximal degree in co-relation 7141. Up to 1025 conditions per place. [2024-06-28 02:23:42,128 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 210 selfloop transitions, 26 changer transitions 0/238 dead transitions. [2024-06-28 02:23:42,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 238 transitions, 2994 flow [2024-06-28 02:23:42,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:42,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 02:23:42,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-28 02:23:42,129 INFO L175 Difference]: Start difference. First operand has 230 places, 218 transitions, 2456 flow. Second operand 10 states and 107 transitions. [2024-06-28 02:23:42,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 238 transitions, 2994 flow [2024-06-28 02:23:42,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 238 transitions, 2928 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:42,290 INFO L231 Difference]: Finished difference. Result has 232 places, 219 transitions, 2464 flow [2024-06-28 02:23:42,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2390, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2464, PETRI_PLACES=232, PETRI_TRANSITIONS=219} [2024-06-28 02:23:42,290 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-28 02:23:42,290 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 219 transitions, 2464 flow [2024-06-28 02:23:42,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:42,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:42,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:42,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 02:23:42,291 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:42,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:42,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1879630665, now seen corresponding path program 3 times [2024-06-28 02:23:42,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:42,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986731388] [2024-06-28 02:23:42,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:42,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:43,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:43,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986731388] [2024-06-28 02:23:43,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986731388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:43,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:43,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:43,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799040557] [2024-06-28 02:23:43,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:43,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:43,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:43,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:43,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:43,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:43,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 219 transitions, 2464 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:43,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:43,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:43,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:43,737 INFO L124 PetriNetUnfolderBase]: 647/1145 cut-off events. [2024-06-28 02:23:43,737 INFO L125 PetriNetUnfolderBase]: For 47218/47218 co-relation queries the response was YES. [2024-06-28 02:23:43,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7309 conditions, 1145 events. 647/1145 cut-off events. For 47218/47218 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5758 event pairs, 140 based on Foata normal form. 2/1147 useless extension candidates. Maximal degree in co-relation 7201. Up to 1032 conditions per place. [2024-06-28 02:23:43,747 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 205 selfloop transitions, 31 changer transitions 0/238 dead transitions. [2024-06-28 02:23:43,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 238 transitions, 3004 flow [2024-06-28 02:23:43,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:43,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:43,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 02:23:43,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-28 02:23:43,748 INFO L175 Difference]: Start difference. First operand has 232 places, 219 transitions, 2464 flow. Second operand 10 states and 108 transitions. [2024-06-28 02:23:43,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 238 transitions, 3004 flow [2024-06-28 02:23:43,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 238 transitions, 2940 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:43,892 INFO L231 Difference]: Finished difference. Result has 234 places, 220 transitions, 2487 flow [2024-06-28 02:23:43,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2400, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2487, PETRI_PLACES=234, PETRI_TRANSITIONS=220} [2024-06-28 02:23:43,893 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-28 02:23:43,893 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 220 transitions, 2487 flow [2024-06-28 02:23:43,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:43,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:43,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:43,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 02:23:43,894 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:43,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:43,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1879346085, now seen corresponding path program 4 times [2024-06-28 02:23:43,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:43,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519114917] [2024-06-28 02:23:43,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:43,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:44,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:44,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:44,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519114917] [2024-06-28 02:23:44,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519114917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:44,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:44,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:44,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745400162] [2024-06-28 02:23:44,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:44,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:44,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:44,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:44,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:45,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:45,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 220 transitions, 2487 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:45,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:45,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:45,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:45,484 INFO L124 PetriNetUnfolderBase]: 651/1153 cut-off events. [2024-06-28 02:23:45,484 INFO L125 PetriNetUnfolderBase]: For 49205/49205 co-relation queries the response was YES. [2024-06-28 02:23:45,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7385 conditions, 1153 events. 651/1153 cut-off events. For 49205/49205 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5797 event pairs, 139 based on Foata normal form. 2/1155 useless extension candidates. Maximal degree in co-relation 7276. Up to 1024 conditions per place. [2024-06-28 02:23:45,495 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 205 selfloop transitions, 32 changer transitions 0/239 dead transitions. [2024-06-28 02:23:45,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 239 transitions, 3029 flow [2024-06-28 02:23:45,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:45,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:45,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 02:23:45,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-28 02:23:45,497 INFO L175 Difference]: Start difference. First operand has 234 places, 220 transitions, 2487 flow. Second operand 10 states and 109 transitions. [2024-06-28 02:23:45,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 239 transitions, 3029 flow [2024-06-28 02:23:45,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 239 transitions, 2954 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:45,674 INFO L231 Difference]: Finished difference. Result has 236 places, 221 transitions, 2502 flow [2024-06-28 02:23:45,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2412, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2502, PETRI_PLACES=236, PETRI_TRANSITIONS=221} [2024-06-28 02:23:45,674 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-28 02:23:45,674 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 221 transitions, 2502 flow [2024-06-28 02:23:45,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:45,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:45,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:45,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 02:23:45,675 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:45,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:45,675 INFO L85 PathProgramCache]: Analyzing trace with hash -247637837, now seen corresponding path program 5 times [2024-06-28 02:23:45,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:45,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3914357] [2024-06-28 02:23:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:45,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:46,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:46,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:46,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3914357] [2024-06-28 02:23:46,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3914357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:46,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:46,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:46,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803665028] [2024-06-28 02:23:46,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:46,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:46,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:46,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:46,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:46,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:46,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 221 transitions, 2502 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:46,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:46,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:46,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:47,112 INFO L124 PetriNetUnfolderBase]: 655/1161 cut-off events. [2024-06-28 02:23:47,112 INFO L125 PetriNetUnfolderBase]: For 50950/50950 co-relation queries the response was YES. [2024-06-28 02:23:47,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7451 conditions, 1161 events. 655/1161 cut-off events. For 50950/50950 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5858 event pairs, 114 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 7341. Up to 1014 conditions per place. [2024-06-28 02:23:47,122 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 210 selfloop transitions, 29 changer transitions 0/241 dead transitions. [2024-06-28 02:23:47,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 241 transitions, 3050 flow [2024-06-28 02:23:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:47,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:47,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 02:23:47,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-28 02:23:47,124 INFO L175 Difference]: Start difference. First operand has 236 places, 221 transitions, 2502 flow. Second operand 10 states and 104 transitions. [2024-06-28 02:23:47,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 241 transitions, 3050 flow [2024-06-28 02:23:47,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 241 transitions, 2970 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:47,306 INFO L231 Difference]: Finished difference. Result has 238 places, 222 transitions, 2508 flow [2024-06-28 02:23:47,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2422, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2508, PETRI_PLACES=238, PETRI_TRANSITIONS=222} [2024-06-28 02:23:47,307 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-28 02:23:47,307 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 222 transitions, 2508 flow [2024-06-28 02:23:47,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:47,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:47,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:47,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 02:23:47,308 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:47,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:47,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1079550871, now seen corresponding path program 1 times [2024-06-28 02:23:47,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:47,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301754140] [2024-06-28 02:23:47,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:47,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:48,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:48,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:48,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301754140] [2024-06-28 02:23:48,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301754140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:48,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:48,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:48,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266296001] [2024-06-28 02:23:48,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:48,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:48,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:48,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:48,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:48,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:48,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 222 transitions, 2508 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:48,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:48,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:48,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:49,163 INFO L124 PetriNetUnfolderBase]: 661/1170 cut-off events. [2024-06-28 02:23:49,163 INFO L125 PetriNetUnfolderBase]: For 52479/52479 co-relation queries the response was YES. [2024-06-28 02:23:49,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7522 conditions, 1170 events. 661/1170 cut-off events. For 52479/52479 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5883 event pairs, 65 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 7411. Up to 566 conditions per place. [2024-06-28 02:23:49,173 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 108 selfloop transitions, 133 changer transitions 0/243 dead transitions. [2024-06-28 02:23:49,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 243 transitions, 3096 flow [2024-06-28 02:23:49,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:49,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:49,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-28 02:23:49,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-28 02:23:49,175 INFO L175 Difference]: Start difference. First operand has 238 places, 222 transitions, 2508 flow. Second operand 9 states and 110 transitions. [2024-06-28 02:23:49,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 243 transitions, 3096 flow [2024-06-28 02:23:49,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 243 transitions, 3020 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:49,346 INFO L231 Difference]: Finished difference. Result has 239 places, 224 transitions, 2782 flow [2024-06-28 02:23:49,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2782, PETRI_PLACES=239, PETRI_TRANSITIONS=224} [2024-06-28 02:23:49,346 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-28 02:23:49,347 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 224 transitions, 2782 flow [2024-06-28 02:23:49,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:49,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:49,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:49,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 02:23:49,347 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:49,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:49,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1928604815, now seen corresponding path program 6 times [2024-06-28 02:23:49,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:49,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183045523] [2024-06-28 02:23:49,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:49,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:50,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:50,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:50,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183045523] [2024-06-28 02:23:50,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183045523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:50,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:50,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:50,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893231215] [2024-06-28 02:23:50,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:50,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:50,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:50,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:50,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:50,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:50,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 224 transitions, 2782 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:50,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:50,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:50,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:50,828 INFO L124 PetriNetUnfolderBase]: 665/1178 cut-off events. [2024-06-28 02:23:50,828 INFO L125 PetriNetUnfolderBase]: For 54460/54460 co-relation queries the response was YES. [2024-06-28 02:23:50,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7949 conditions, 1178 events. 665/1178 cut-off events. For 54460/54460 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5942 event pairs, 119 based on Foata normal form. 2/1180 useless extension candidates. Maximal degree in co-relation 7837. Up to 1060 conditions per place. [2024-06-28 02:23:50,838 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 212 selfloop transitions, 29 changer transitions 0/243 dead transitions. [2024-06-28 02:23:50,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 243 transitions, 3338 flow [2024-06-28 02:23:50,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:50,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:50,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 02:23:50,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-28 02:23:50,857 INFO L175 Difference]: Start difference. First operand has 239 places, 224 transitions, 2782 flow. Second operand 10 states and 111 transitions. [2024-06-28 02:23:50,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 243 transitions, 3338 flow [2024-06-28 02:23:51,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 243 transitions, 3074 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:51,048 INFO L231 Difference]: Finished difference. Result has 242 places, 225 transitions, 2606 flow [2024-06-28 02:23:51,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2518, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2606, PETRI_PLACES=242, PETRI_TRANSITIONS=225} [2024-06-28 02:23:51,049 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-28 02:23:51,049 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 225 transitions, 2606 flow [2024-06-28 02:23:51,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:51,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:51,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:51,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 02:23:51,050 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:51,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:51,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1153232589, now seen corresponding path program 7 times [2024-06-28 02:23:51,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:51,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061472854] [2024-06-28 02:23:51,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:51,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:52,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:52,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061472854] [2024-06-28 02:23:52,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061472854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:52,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:52,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:52,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872615886] [2024-06-28 02:23:52,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:52,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:52,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:52,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:52,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:52,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:52,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 225 transitions, 2606 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:52,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:52,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:52,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:52,681 INFO L124 PetriNetUnfolderBase]: 669/1186 cut-off events. [2024-06-28 02:23:52,681 INFO L125 PetriNetUnfolderBase]: For 50323/50323 co-relation queries the response was YES. [2024-06-28 02:23:52,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7647 conditions, 1186 events. 669/1186 cut-off events. For 50323/50323 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6017 event pairs, 117 based on Foata normal form. 2/1188 useless extension candidates. Maximal degree in co-relation 7534. Up to 1078 conditions per place. [2024-06-28 02:23:52,692 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 217 selfloop transitions, 26 changer transitions 0/245 dead transitions. [2024-06-28 02:23:52,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 245 transitions, 3170 flow [2024-06-28 02:23:52,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:52,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:52,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 02:23:52,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-28 02:23:52,694 INFO L175 Difference]: Start difference. First operand has 242 places, 225 transitions, 2606 flow. Second operand 10 states and 109 transitions. [2024-06-28 02:23:52,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 245 transitions, 3170 flow [2024-06-28 02:23:52,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 245 transitions, 3092 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:52,850 INFO L231 Difference]: Finished difference. Result has 244 places, 226 transitions, 2612 flow [2024-06-28 02:23:52,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2528, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2612, PETRI_PLACES=244, PETRI_TRANSITIONS=226} [2024-06-28 02:23:52,851 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-28 02:23:52,851 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 226 transitions, 2612 flow [2024-06-28 02:23:52,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:52,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:52,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:52,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 02:23:52,851 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:52,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:52,852 INFO L85 PathProgramCache]: Analyzing trace with hash 526367573, now seen corresponding path program 8 times [2024-06-28 02:23:52,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:52,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543599082] [2024-06-28 02:23:52,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:52,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:53,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:53,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:53,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543599082] [2024-06-28 02:23:53,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543599082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:53,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:53,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:53,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670298077] [2024-06-28 02:23:53,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:53,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:53,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:53,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:53,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:53,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:53,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 226 transitions, 2612 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:53,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:53,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:53,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:54,431 INFO L124 PetriNetUnfolderBase]: 673/1194 cut-off events. [2024-06-28 02:23:54,431 INFO L125 PetriNetUnfolderBase]: For 52066/52066 co-relation queries the response was YES. [2024-06-28 02:23:54,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7703 conditions, 1194 events. 673/1194 cut-off events. For 52066/52066 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6088 event pairs, 109 based on Foata normal form. 2/1196 useless extension candidates. Maximal degree in co-relation 7589. Up to 996 conditions per place. [2024-06-28 02:23:54,442 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 192 selfloop transitions, 53 changer transitions 0/247 dead transitions. [2024-06-28 02:23:54,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 247 transitions, 3194 flow [2024-06-28 02:23:54,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:54,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:54,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 02:23:54,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-28 02:23:54,444 INFO L175 Difference]: Start difference. First operand has 244 places, 226 transitions, 2612 flow. Second operand 10 states and 113 transitions. [2024-06-28 02:23:54,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 247 transitions, 3194 flow [2024-06-28 02:23:54,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 247 transitions, 3120 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:54,606 INFO L231 Difference]: Finished difference. Result has 246 places, 227 transitions, 2679 flow [2024-06-28 02:23:54,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2538, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2679, PETRI_PLACES=246, PETRI_TRANSITIONS=227} [2024-06-28 02:23:54,607 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-28 02:23:54,607 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 227 transitions, 2679 flow [2024-06-28 02:23:54,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:54,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:54,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:54,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 02:23:54,607 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:54,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:54,608 INFO L85 PathProgramCache]: Analyzing trace with hash 526583054, now seen corresponding path program 1 times [2024-06-28 02:23:54,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:54,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753602409] [2024-06-28 02:23:54,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:54,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:55,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:55,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:55,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753602409] [2024-06-28 02:23:55,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753602409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:55,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:55,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:55,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836352353] [2024-06-28 02:23:55,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:55,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:55,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:55,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:55,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:55,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:55,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 227 transitions, 2679 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:55,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:55,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:55,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:56,241 INFO L124 PetriNetUnfolderBase]: 676/1200 cut-off events. [2024-06-28 02:23:56,242 INFO L125 PetriNetUnfolderBase]: For 51900/51900 co-relation queries the response was YES. [2024-06-28 02:23:56,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7822 conditions, 1200 events. 676/1200 cut-off events. For 51900/51900 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6161 event pairs, 181 based on Foata normal form. 1/1201 useless extension candidates. Maximal degree in co-relation 7707. Up to 1096 conditions per place. [2024-06-28 02:23:56,252 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 39 changer transitions 0/247 dead transitions. [2024-06-28 02:23:56,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 247 transitions, 3279 flow [2024-06-28 02:23:56,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:23:56,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:23:56,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 02:23:56,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-28 02:23:56,253 INFO L175 Difference]: Start difference. First operand has 246 places, 227 transitions, 2679 flow. Second operand 11 states and 115 transitions. [2024-06-28 02:23:56,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 247 transitions, 3279 flow [2024-06-28 02:23:56,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 247 transitions, 3150 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:56,448 INFO L231 Difference]: Finished difference. Result has 249 places, 229 transitions, 2688 flow [2024-06-28 02:23:56,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2550, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2688, PETRI_PLACES=249, PETRI_TRANSITIONS=229} [2024-06-28 02:23:56,449 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-28 02:23:56,449 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 229 transitions, 2688 flow [2024-06-28 02:23:56,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:56,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:56,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:56,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 02:23:56,449 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:56,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:56,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2100360997, now seen corresponding path program 9 times [2024-06-28 02:23:56,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:56,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927327360] [2024-06-28 02:23:56,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:56,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:57,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:57,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927327360] [2024-06-28 02:23:57,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927327360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:57,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:57,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:57,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566697967] [2024-06-28 02:23:57,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:57,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:57,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:57,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:57,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:57,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:57,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 229 transitions, 2688 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:57,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:57,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:57,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:58,217 INFO L124 PetriNetUnfolderBase]: 680/1207 cut-off events. [2024-06-28 02:23:58,218 INFO L125 PetriNetUnfolderBase]: For 55180/55180 co-relation queries the response was YES. [2024-06-28 02:23:58,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7832 conditions, 1207 events. 680/1207 cut-off events. For 55180/55180 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6173 event pairs, 112 based on Foata normal form. 2/1209 useless extension candidates. Maximal degree in co-relation 7716. Up to 1009 conditions per place. [2024-06-28 02:23:58,228 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 195 selfloop transitions, 52 changer transitions 0/249 dead transitions. [2024-06-28 02:23:58,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 249 transitions, 3270 flow [2024-06-28 02:23:58,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:58,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:58,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 02:23:58,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-28 02:23:58,229 INFO L175 Difference]: Start difference. First operand has 249 places, 229 transitions, 2688 flow. Second operand 10 states and 113 transitions. [2024-06-28 02:23:58,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 249 transitions, 3270 flow [2024-06-28 02:23:58,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 249 transitions, 3166 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 02:23:58,390 INFO L231 Difference]: Finished difference. Result has 250 places, 230 transitions, 2725 flow [2024-06-28 02:23:58,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2584, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2725, PETRI_PLACES=250, PETRI_TRANSITIONS=230} [2024-06-28 02:23:58,391 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-28 02:23:58,391 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 230 transitions, 2725 flow [2024-06-28 02:23:58,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:58,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:58,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:58,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 02:23:58,391 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:58,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:58,392 INFO L85 PathProgramCache]: Analyzing trace with hash 526582775, now seen corresponding path program 2 times [2024-06-28 02:23:58,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:58,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555471998] [2024-06-28 02:23:58,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:58,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:59,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:59,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:59,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555471998] [2024-06-28 02:23:59,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555471998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:59,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:59,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:59,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164484090] [2024-06-28 02:23:59,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:59,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:59,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:59,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:59,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:59,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:23:59,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 230 transitions, 2725 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:59,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:59,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:23:59,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:00,159 INFO L124 PetriNetUnfolderBase]: 692/1227 cut-off events. [2024-06-28 02:24:00,159 INFO L125 PetriNetUnfolderBase]: For 57372/57372 co-relation queries the response was YES. [2024-06-28 02:24:00,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7997 conditions, 1227 events. 692/1227 cut-off events. For 57372/57372 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6318 event pairs, 110 based on Foata normal form. 2/1229 useless extension candidates. Maximal degree in co-relation 7880. Up to 931 conditions per place. [2024-06-28 02:24:00,170 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 187 selfloop transitions, 69 changer transitions 0/258 dead transitions. [2024-06-28 02:24:00,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 258 transitions, 3375 flow [2024-06-28 02:24:00,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:00,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:00,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 02:24:00,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-28 02:24:00,171 INFO L175 Difference]: Start difference. First operand has 250 places, 230 transitions, 2725 flow. Second operand 11 states and 127 transitions. [2024-06-28 02:24:00,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 258 transitions, 3375 flow [2024-06-28 02:24:00,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 258 transitions, 3246 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:00,388 INFO L231 Difference]: Finished difference. Result has 254 places, 234 transitions, 2815 flow [2024-06-28 02:24:00,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2596, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2815, PETRI_PLACES=254, PETRI_TRANSITIONS=234} [2024-06-28 02:24:00,389 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-28 02:24:00,389 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 234 transitions, 2815 flow [2024-06-28 02:24:00,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:00,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:00,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:00,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 02:24:00,390 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:00,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:00,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2100364717, now seen corresponding path program 10 times [2024-06-28 02:24:00,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:00,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867627483] [2024-06-28 02:24:00,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:00,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:01,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:01,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:01,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867627483] [2024-06-28 02:24:01,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867627483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:01,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:01,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:01,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137291297] [2024-06-28 02:24:01,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:01,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:01,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:01,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:01,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:01,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:01,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 234 transitions, 2815 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:01,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:01,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:01,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:02,119 INFO L124 PetriNetUnfolderBase]: 696/1235 cut-off events. [2024-06-28 02:24:02,119 INFO L125 PetriNetUnfolderBase]: For 59210/59210 co-relation queries the response was YES. [2024-06-28 02:24:02,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8160 conditions, 1235 events. 696/1235 cut-off events. For 59210/59210 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6369 event pairs, 116 based on Foata normal form. 2/1237 useless extension candidates. Maximal degree in co-relation 8041. Up to 1013 conditions per place. [2024-06-28 02:24:02,130 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 199 selfloop transitions, 53 changer transitions 0/254 dead transitions. [2024-06-28 02:24:02,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 254 transitions, 3407 flow [2024-06-28 02:24:02,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:02,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:02,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 02:24:02,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-28 02:24:02,131 INFO L175 Difference]: Start difference. First operand has 254 places, 234 transitions, 2815 flow. Second operand 10 states and 113 transitions. [2024-06-28 02:24:02,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 254 transitions, 3407 flow [2024-06-28 02:24:02,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 254 transitions, 3270 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:02,319 INFO L231 Difference]: Finished difference. Result has 257 places, 235 transitions, 2822 flow [2024-06-28 02:24:02,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2678, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2822, PETRI_PLACES=257, PETRI_TRANSITIONS=235} [2024-06-28 02:24:02,320 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-28 02:24:02,320 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 235 transitions, 2822 flow [2024-06-28 02:24:02,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:02,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:02,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:02,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 02:24:02,321 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:02,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:02,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1140428693, now seen corresponding path program 1 times [2024-06-28 02:24:02,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:02,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389387205] [2024-06-28 02:24:02,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:02,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:03,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:03,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389387205] [2024-06-28 02:24:03,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389387205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:03,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:03,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:03,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131180449] [2024-06-28 02:24:03,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:03,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:03,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:03,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:03,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:03,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:03,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 235 transitions, 2822 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:03,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:03,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:03,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:03,868 INFO L124 PetriNetUnfolderBase]: 704/1253 cut-off events. [2024-06-28 02:24:03,868 INFO L125 PetriNetUnfolderBase]: For 64819/64819 co-relation queries the response was YES. [2024-06-28 02:24:03,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8224 conditions, 1253 events. 704/1253 cut-off events. For 64819/64819 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6512 event pairs, 167 based on Foata normal form. 4/1257 useless extension candidates. Maximal degree in co-relation 8104. Up to 1155 conditions per place. [2024-06-28 02:24:03,879 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 226 selfloop transitions, 27 changer transitions 0/255 dead transitions. [2024-06-28 02:24:03,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 255 transitions, 3410 flow [2024-06-28 02:24:03,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:03,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:03,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 02:24:03,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-28 02:24:03,880 INFO L175 Difference]: Start difference. First operand has 257 places, 235 transitions, 2822 flow. Second operand 11 states and 115 transitions. [2024-06-28 02:24:03,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 255 transitions, 3410 flow [2024-06-28 02:24:04,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 255 transitions, 3276 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:04,052 INFO L231 Difference]: Finished difference. Result has 260 places, 236 transitions, 2766 flow [2024-06-28 02:24:04,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2688, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2766, PETRI_PLACES=260, PETRI_TRANSITIONS=236} [2024-06-28 02:24:04,052 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-28 02:24:04,052 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 236 transitions, 2766 flow [2024-06-28 02:24:04,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:04,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:04,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:04,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 02:24:04,053 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:04,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:04,053 INFO L85 PathProgramCache]: Analyzing trace with hash -2052390743, now seen corresponding path program 11 times [2024-06-28 02:24:04,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:04,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257871620] [2024-06-28 02:24:04,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:04,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:05,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:05,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257871620] [2024-06-28 02:24:05,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257871620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:05,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:05,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:05,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873124420] [2024-06-28 02:24:05,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:05,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:05,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:05,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:05,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:05,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:05,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 236 transitions, 2766 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:05,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:05,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:05,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:05,607 INFO L124 PetriNetUnfolderBase]: 708/1260 cut-off events. [2024-06-28 02:24:05,607 INFO L125 PetriNetUnfolderBase]: For 62746/62746 co-relation queries the response was YES. [2024-06-28 02:24:05,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8215 conditions, 1260 events. 708/1260 cut-off events. For 62746/62746 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6545 event pairs, 120 based on Foata normal form. 2/1262 useless extension candidates. Maximal degree in co-relation 8094. Up to 1065 conditions per place. [2024-06-28 02:24:05,619 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 217 selfloop transitions, 34 changer transitions 0/253 dead transitions. [2024-06-28 02:24:05,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 253 transitions, 3342 flow [2024-06-28 02:24:05,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:05,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:05,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 02:24:05,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298611111111111 [2024-06-28 02:24:05,620 INFO L175 Difference]: Start difference. First operand has 260 places, 236 transitions, 2766 flow. Second operand 9 states and 95 transitions. [2024-06-28 02:24:05,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 253 transitions, 3342 flow [2024-06-28 02:24:05,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 253 transitions, 3277 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:05,878 INFO L231 Difference]: Finished difference. Result has 261 places, 237 transitions, 2815 flow [2024-06-28 02:24:05,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2815, PETRI_PLACES=261, PETRI_TRANSITIONS=237} [2024-06-28 02:24:05,878 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-28 02:24:05,878 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 237 transitions, 2815 flow [2024-06-28 02:24:05,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:05,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:05,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:05,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 02:24:05,879 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:05,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:05,880 INFO L85 PathProgramCache]: Analyzing trace with hash -955455777, now seen corresponding path program 12 times [2024-06-28 02:24:05,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:05,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72098887] [2024-06-28 02:24:05,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:05,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:07,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:07,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72098887] [2024-06-28 02:24:07,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72098887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:07,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:07,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:07,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322891911] [2024-06-28 02:24:07,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:07,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:07,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:07,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:07,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:07,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:07,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 237 transitions, 2815 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:07,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:07,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:07,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:07,488 INFO L124 PetriNetUnfolderBase]: 712/1268 cut-off events. [2024-06-28 02:24:07,488 INFO L125 PetriNetUnfolderBase]: For 65013/65013 co-relation queries the response was YES. [2024-06-28 02:24:07,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8360 conditions, 1268 events. 712/1268 cut-off events. For 65013/65013 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6599 event pairs, 156 based on Foata normal form. 2/1270 useless extension candidates. Maximal degree in co-relation 8238. Up to 1111 conditions per place. [2024-06-28 02:24:07,500 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 212 selfloop transitions, 40 changer transitions 0/254 dead transitions. [2024-06-28 02:24:07,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 254 transitions, 3399 flow [2024-06-28 02:24:07,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:07,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:07,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 02:24:07,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-28 02:24:07,501 INFO L175 Difference]: Start difference. First operand has 261 places, 237 transitions, 2815 flow. Second operand 9 states and 98 transitions. [2024-06-28 02:24:07,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 254 transitions, 3399 flow [2024-06-28 02:24:07,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 254 transitions, 3295 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:07,706 INFO L231 Difference]: Finished difference. Result has 263 places, 238 transitions, 2838 flow [2024-06-28 02:24:07,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2717, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2838, PETRI_PLACES=263, PETRI_TRANSITIONS=238} [2024-06-28 02:24:07,707 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-28 02:24:07,707 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 238 transitions, 2838 flow [2024-06-28 02:24:07,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:07,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:07,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:07,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 02:24:07,707 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:07,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:07,708 INFO L85 PathProgramCache]: Analyzing trace with hash -955459497, now seen corresponding path program 13 times [2024-06-28 02:24:07,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:07,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167894048] [2024-06-28 02:24:07,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:07,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:08,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:08,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167894048] [2024-06-28 02:24:08,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167894048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:08,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:08,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:08,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528200132] [2024-06-28 02:24:08,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:08,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:08,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:08,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:08,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:09,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:09,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 238 transitions, 2838 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:09,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:09,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:09,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:09,412 INFO L124 PetriNetUnfolderBase]: 716/1276 cut-off events. [2024-06-28 02:24:09,412 INFO L125 PetriNetUnfolderBase]: For 61288/61288 co-relation queries the response was YES. [2024-06-28 02:24:09,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8347 conditions, 1276 events. 716/1276 cut-off events. For 61288/61288 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6654 event pairs, 147 based on Foata normal form. 2/1278 useless extension candidates. Maximal degree in co-relation 8224. Up to 1075 conditions per place. [2024-06-28 02:24:09,424 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 210 selfloop transitions, 43 changer transitions 0/255 dead transitions. [2024-06-28 02:24:09,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 255 transitions, 3418 flow [2024-06-28 02:24:09,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:09,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 02:24:09,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:24:09,425 INFO L175 Difference]: Start difference. First operand has 263 places, 238 transitions, 2838 flow. Second operand 9 states and 99 transitions. [2024-06-28 02:24:09,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 255 transitions, 3418 flow [2024-06-28 02:24:09,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 255 transitions, 3309 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:09,600 INFO L231 Difference]: Finished difference. Result has 265 places, 239 transitions, 2857 flow [2024-06-28 02:24:09,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2733, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2857, PETRI_PLACES=265, PETRI_TRANSITIONS=239} [2024-06-28 02:24:09,600 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-28 02:24:09,600 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 239 transitions, 2857 flow [2024-06-28 02:24:09,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:09,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:09,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:09,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 02:24:09,601 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:09,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:09,601 INFO L85 PathProgramCache]: Analyzing trace with hash -856741167, now seen corresponding path program 14 times [2024-06-28 02:24:09,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:09,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234395641] [2024-06-28 02:24:09,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:09,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:10,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:10,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234395641] [2024-06-28 02:24:10,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234395641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:10,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:10,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:10,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11221397] [2024-06-28 02:24:10,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:10,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:10,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:10,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:10,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:10,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:10,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 239 transitions, 2857 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:10,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:10,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:10,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:11,303 INFO L124 PetriNetUnfolderBase]: 720/1283 cut-off events. [2024-06-28 02:24:11,303 INFO L125 PetriNetUnfolderBase]: For 59513/59513 co-relation queries the response was YES. [2024-06-28 02:24:11,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8362 conditions, 1283 events. 720/1283 cut-off events. For 59513/59513 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6688 event pairs, 104 based on Foata normal form. 2/1285 useless extension candidates. Maximal degree in co-relation 8238. Up to 1001 conditions per place. [2024-06-28 02:24:11,316 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 183 selfloop transitions, 71 changer transitions 0/256 dead transitions. [2024-06-28 02:24:11,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 256 transitions, 3443 flow [2024-06-28 02:24:11,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:11,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:11,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 02:24:11,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-28 02:24:11,317 INFO L175 Difference]: Start difference. First operand has 265 places, 239 transitions, 2857 flow. Second operand 9 states and 101 transitions. [2024-06-28 02:24:11,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 256 transitions, 3443 flow [2024-06-28 02:24:11,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 256 transitions, 3329 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:11,498 INFO L231 Difference]: Finished difference. Result has 267 places, 240 transitions, 2925 flow [2024-06-28 02:24:11,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2747, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2925, PETRI_PLACES=267, PETRI_TRANSITIONS=240} [2024-06-28 02:24:11,499 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-28 02:24:11,499 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 240 transitions, 2925 flow [2024-06-28 02:24:11,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:11,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:11,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:11,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 02:24:11,500 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:11,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:11,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1672825603, now seen corresponding path program 15 times [2024-06-28 02:24:11,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:11,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522932089] [2024-06-28 02:24:11,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:11,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:12,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:12,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522932089] [2024-06-28 02:24:12,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522932089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:12,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:12,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:12,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573920883] [2024-06-28 02:24:12,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:12,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:12,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:12,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:12,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:13,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:13,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 240 transitions, 2925 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:13,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:13,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:13,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:13,466 INFO L124 PetriNetUnfolderBase]: 731/1304 cut-off events. [2024-06-28 02:24:13,467 INFO L125 PetriNetUnfolderBase]: For 62279/62279 co-relation queries the response was YES. [2024-06-28 02:24:13,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8665 conditions, 1304 events. 731/1304 cut-off events. For 62279/62279 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6829 event pairs, 109 based on Foata normal form. 2/1306 useless extension candidates. Maximal degree in co-relation 8540. Up to 971 conditions per place. [2024-06-28 02:24:13,479 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 184 selfloop transitions, 73 changer transitions 0/259 dead transitions. [2024-06-28 02:24:13,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 259 transitions, 3669 flow [2024-06-28 02:24:13,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:13,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:13,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 02:24:13,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 02:24:13,480 INFO L175 Difference]: Start difference. First operand has 267 places, 240 transitions, 2925 flow. Second operand 9 states and 102 transitions. [2024-06-28 02:24:13,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 259 transitions, 3669 flow [2024-06-28 02:24:13,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 259 transitions, 3501 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:13,708 INFO L231 Difference]: Finished difference. Result has 269 places, 242 transitions, 2969 flow [2024-06-28 02:24:13,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2763, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2969, PETRI_PLACES=269, PETRI_TRANSITIONS=242} [2024-06-28 02:24:13,709 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-28 02:24:13,709 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 242 transitions, 2969 flow [2024-06-28 02:24:13,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:13,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:13,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:13,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 02:24:13,709 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:13,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:13,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1667315353, now seen corresponding path program 16 times [2024-06-28 02:24:13,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:13,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746262036] [2024-06-28 02:24:13,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:13,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:14,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:14,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:14,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746262036] [2024-06-28 02:24:14,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746262036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:14,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:14,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:14,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052013544] [2024-06-28 02:24:14,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:14,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:14,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:14,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:14,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:14,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:14,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 242 transitions, 2969 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:14,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:14,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:14,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:15,385 INFO L124 PetriNetUnfolderBase]: 728/1299 cut-off events. [2024-06-28 02:24:15,385 INFO L125 PetriNetUnfolderBase]: For 58123/58123 co-relation queries the response was YES. [2024-06-28 02:24:15,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8476 conditions, 1299 events. 728/1299 cut-off events. For 58123/58123 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6823 event pairs, 100 based on Foata normal form. 2/1301 useless extension candidates. Maximal degree in co-relation 8350. Up to 1017 conditions per place. [2024-06-28 02:24:15,398 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 184 selfloop transitions, 73 changer transitions 0/259 dead transitions. [2024-06-28 02:24:15,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 259 transitions, 3537 flow [2024-06-28 02:24:15,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:15,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:15,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 02:24:15,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-28 02:24:15,399 INFO L175 Difference]: Start difference. First operand has 269 places, 242 transitions, 2969 flow. Second operand 9 states and 101 transitions. [2024-06-28 02:24:15,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 259 transitions, 3537 flow [2024-06-28 02:24:15,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 259 transitions, 3408 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 02:24:15,595 INFO L231 Difference]: Finished difference. Result has 273 places, 242 transitions, 2994 flow [2024-06-28 02:24:15,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2840, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2994, PETRI_PLACES=273, PETRI_TRANSITIONS=242} [2024-06-28 02:24:15,596 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 242 predicate places. [2024-06-28 02:24:15,598 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 242 transitions, 2994 flow [2024-06-28 02:24:15,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:15,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:15,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:15,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 02:24:15,598 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:15,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:15,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1667099872, now seen corresponding path program 2 times [2024-06-28 02:24:15,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:15,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657803369] [2024-06-28 02:24:15,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:15,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:16,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:16,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:16,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657803369] [2024-06-28 02:24:16,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657803369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:16,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:16,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:16,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755011339] [2024-06-28 02:24:16,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:16,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:16,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:16,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:16,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:16,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:16,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 242 transitions, 2994 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:16,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:16,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:16,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:17,361 INFO L124 PetriNetUnfolderBase]: 726/1297 cut-off events. [2024-06-28 02:24:17,361 INFO L125 PetriNetUnfolderBase]: For 55058/55058 co-relation queries the response was YES. [2024-06-28 02:24:17,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8494 conditions, 1297 events. 726/1297 cut-off events. For 55058/55058 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6837 event pairs, 183 based on Foata normal form. 1/1298 useless extension candidates. Maximal degree in co-relation 8366. Up to 1140 conditions per place. [2024-06-28 02:24:17,374 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 199 selfloop transitions, 57 changer transitions 0/258 dead transitions. [2024-06-28 02:24:17,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 258 transitions, 3562 flow [2024-06-28 02:24:17,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:17,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:17,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 02:24:17,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-28 02:24:17,375 INFO L175 Difference]: Start difference. First operand has 273 places, 242 transitions, 2994 flow. Second operand 10 states and 105 transitions. [2024-06-28 02:24:17,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 258 transitions, 3562 flow [2024-06-28 02:24:17,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 258 transitions, 3396 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:17,565 INFO L231 Difference]: Finished difference. Result has 275 places, 242 transitions, 2956 flow [2024-06-28 02:24:17,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2828, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2956, PETRI_PLACES=275, PETRI_TRANSITIONS=242} [2024-06-28 02:24:17,566 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 244 predicate places. [2024-06-28 02:24:17,566 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 242 transitions, 2956 flow [2024-06-28 02:24:17,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:17,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:17,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:17,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 02:24:17,566 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:17,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:17,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1672547285, now seen corresponding path program 3 times [2024-06-28 02:24:17,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:17,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732365393] [2024-06-28 02:24:17,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:17,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:18,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:18,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732365393] [2024-06-28 02:24:18,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732365393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:18,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:18,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:18,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758933999] [2024-06-28 02:24:18,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:18,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:18,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:18,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:18,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:19,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:19,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 242 transitions, 2956 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:19,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:19,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:19,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:19,654 INFO L124 PetriNetUnfolderBase]: 738/1316 cut-off events. [2024-06-28 02:24:19,654 INFO L125 PetriNetUnfolderBase]: For 58624/58624 co-relation queries the response was YES. [2024-06-28 02:24:19,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8565 conditions, 1316 events. 738/1316 cut-off events. For 58624/58624 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6921 event pairs, 102 based on Foata normal form. 2/1318 useless extension candidates. Maximal degree in co-relation 8436. Up to 854 conditions per place. [2024-06-28 02:24:19,667 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 161 selfloop transitions, 104 changer transitions 0/267 dead transitions. [2024-06-28 02:24:19,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 267 transitions, 3622 flow [2024-06-28 02:24:19,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:19,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:19,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 02:24:19,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-28 02:24:19,668 INFO L175 Difference]: Start difference. First operand has 275 places, 242 transitions, 2956 flow. Second operand 10 states and 115 transitions. [2024-06-28 02:24:19,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 267 transitions, 3622 flow [2024-06-28 02:24:19,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 267 transitions, 3481 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:19,897 INFO L231 Difference]: Finished difference. Result has 277 places, 246 transitions, 3128 flow [2024-06-28 02:24:19,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2815, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3128, PETRI_PLACES=277, PETRI_TRANSITIONS=246} [2024-06-28 02:24:19,898 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-28 02:24:19,898 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 246 transitions, 3128 flow [2024-06-28 02:24:19,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:19,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:19,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:19,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 02:24:19,898 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:19,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:19,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1581215513, now seen corresponding path program 2 times [2024-06-28 02:24:19,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:19,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82783022] [2024-06-28 02:24:19,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:19,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:20,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:20,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82783022] [2024-06-28 02:24:20,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82783022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:20,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:20,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:20,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874238141] [2024-06-28 02:24:20,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:20,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:20,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:20,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:20,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:21,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:21,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 246 transitions, 3128 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:21,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:21,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:21,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:21,521 INFO L124 PetriNetUnfolderBase]: 746/1334 cut-off events. [2024-06-28 02:24:21,521 INFO L125 PetriNetUnfolderBase]: For 63149/63149 co-relation queries the response was YES. [2024-06-28 02:24:21,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8851 conditions, 1334 events. 746/1334 cut-off events. For 63149/63149 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 7103 event pairs, 165 based on Foata normal form. 4/1338 useless extension candidates. Maximal degree in co-relation 8721. Up to 1182 conditions per place. [2024-06-28 02:24:21,534 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 226 selfloop transitions, 38 changer transitions 0/266 dead transitions. [2024-06-28 02:24:21,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 266 transitions, 3742 flow [2024-06-28 02:24:21,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:21,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 02:24:21,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-28 02:24:21,536 INFO L175 Difference]: Start difference. First operand has 277 places, 246 transitions, 3128 flow. Second operand 11 states and 114 transitions. [2024-06-28 02:24:21,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 266 transitions, 3742 flow [2024-06-28 02:24:21,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 266 transitions, 3554 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 02:24:21,720 INFO L231 Difference]: Finished difference. Result has 282 places, 247 transitions, 3044 flow [2024-06-28 02:24:21,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2940, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3044, PETRI_PLACES=282, PETRI_TRANSITIONS=247} [2024-06-28 02:24:21,720 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-28 02:24:21,720 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 247 transitions, 3044 flow [2024-06-28 02:24:21,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:21,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:21,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:21,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 02:24:21,721 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:21,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:21,721 INFO L85 PathProgramCache]: Analyzing trace with hash -432703957, now seen corresponding path program 17 times [2024-06-28 02:24:21,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:21,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500994827] [2024-06-28 02:24:21,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:21,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:22,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:22,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:22,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500994827] [2024-06-28 02:24:22,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500994827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:22,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:22,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:22,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33586330] [2024-06-28 02:24:22,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:22,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:22,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:22,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:22,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:23,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:23,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 247 transitions, 3044 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:23,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:23,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:23,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:23,473 INFO L124 PetriNetUnfolderBase]: 750/1341 cut-off events. [2024-06-28 02:24:23,474 INFO L125 PetriNetUnfolderBase]: For 57978/57978 co-relation queries the response was YES. [2024-06-28 02:24:23,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8734 conditions, 1341 events. 750/1341 cut-off events. For 57978/57978 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7096 event pairs, 92 based on Foata normal form. 2/1343 useless extension candidates. Maximal degree in co-relation 8603. Up to 1016 conditions per place. [2024-06-28 02:24:23,490 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 182 selfloop transitions, 80 changer transitions 0/264 dead transitions. [2024-06-28 02:24:23,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 264 transitions, 3650 flow [2024-06-28 02:24:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:23,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:23,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 02:24:23,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 02:24:23,491 INFO L175 Difference]: Start difference. First operand has 282 places, 247 transitions, 3044 flow. Second operand 9 states and 102 transitions. [2024-06-28 02:24:23,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 264 transitions, 3650 flow [2024-06-28 02:24:23,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 264 transitions, 3554 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:23,789 INFO L231 Difference]: Finished difference. Result has 282 places, 248 transitions, 3142 flow [2024-06-28 02:24:23,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2948, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3142, PETRI_PLACES=282, PETRI_TRANSITIONS=248} [2024-06-28 02:24:23,790 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-28 02:24:23,790 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 248 transitions, 3142 flow [2024-06-28 02:24:23,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:23,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:23,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:23,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 02:24:23,791 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:23,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:23,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1514515739, now seen corresponding path program 3 times [2024-06-28 02:24:23,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:23,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512176218] [2024-06-28 02:24:23,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:23,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:24,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:24,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:24,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512176218] [2024-06-28 02:24:24,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512176218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:24,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:24,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:24,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983407310] [2024-06-28 02:24:24,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:24,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:24,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:24,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:24,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:24,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:24,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 248 transitions, 3142 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:24,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:24,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:24,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:24,939 INFO L124 PetriNetUnfolderBase]: 758/1356 cut-off events. [2024-06-28 02:24:24,939 INFO L125 PetriNetUnfolderBase]: For 62470/62470 co-relation queries the response was YES. [2024-06-28 02:24:24,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8914 conditions, 1356 events. 758/1356 cut-off events. For 62470/62470 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7233 event pairs, 282 based on Foata normal form. 4/1360 useless extension candidates. Maximal degree in co-relation 8782. Up to 1290 conditions per place. [2024-06-28 02:24:24,953 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 240 selfloop transitions, 20 changer transitions 0/262 dead transitions. [2024-06-28 02:24:24,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 262 transitions, 3722 flow [2024-06-28 02:24:24,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:24,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:24,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 02:24:24,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-28 02:24:24,955 INFO L175 Difference]: Start difference. First operand has 282 places, 248 transitions, 3142 flow. Second operand 10 states and 102 transitions. [2024-06-28 02:24:24,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 262 transitions, 3722 flow [2024-06-28 02:24:25,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 262 transitions, 3538 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:25,177 INFO L231 Difference]: Finished difference. Result has 285 places, 249 transitions, 3024 flow [2024-06-28 02:24:25,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2958, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3024, PETRI_PLACES=285, PETRI_TRANSITIONS=249} [2024-06-28 02:24:25,177 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-28 02:24:25,177 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 249 transitions, 3024 flow [2024-06-28 02:24:25,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:25,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:25,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:25,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 02:24:25,178 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:25,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:25,178 INFO L85 PathProgramCache]: Analyzing trace with hash -933090079, now seen corresponding path program 18 times [2024-06-28 02:24:25,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:25,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790789927] [2024-06-28 02:24:25,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:25,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:26,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:26,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:26,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790789927] [2024-06-28 02:24:26,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790789927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:26,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:26,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:26,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870795417] [2024-06-28 02:24:26,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:26,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:26,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:26,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:26,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:26,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 249 transitions, 3024 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:26,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:26,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:26,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:26,798 INFO L124 PetriNetUnfolderBase]: 762/1365 cut-off events. [2024-06-28 02:24:26,799 INFO L125 PetriNetUnfolderBase]: For 59524/59524 co-relation queries the response was YES. [2024-06-28 02:24:26,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8787 conditions, 1365 events. 762/1365 cut-off events. For 59524/59524 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7284 event pairs, 108 based on Foata normal form. 2/1367 useless extension candidates. Maximal degree in co-relation 8654. Up to 1040 conditions per place. [2024-06-28 02:24:26,812 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 196 selfloop transitions, 69 changer transitions 0/267 dead transitions. [2024-06-28 02:24:26,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 267 transitions, 3642 flow [2024-06-28 02:24:26,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:26,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 02:24:26,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-28 02:24:26,828 INFO L175 Difference]: Start difference. First operand has 285 places, 249 transitions, 3024 flow. Second operand 9 states and 105 transitions. [2024-06-28 02:24:26,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 267 transitions, 3642 flow [2024-06-28 02:24:27,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 267 transitions, 3586 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:27,086 INFO L231 Difference]: Finished difference. Result has 286 places, 250 transitions, 3142 flow [2024-06-28 02:24:27,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2968, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3142, PETRI_PLACES=286, PETRI_TRANSITIONS=250} [2024-06-28 02:24:27,086 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-28 02:24:27,086 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 250 transitions, 3142 flow [2024-06-28 02:24:27,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:27,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:27,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:27,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 02:24:27,087 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:27,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:27,087 INFO L85 PathProgramCache]: Analyzing trace with hash -932874877, now seen corresponding path program 4 times [2024-06-28 02:24:27,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:27,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034808365] [2024-06-28 02:24:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:27,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:28,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:28,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034808365] [2024-06-28 02:24:28,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034808365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:28,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:28,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:28,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169512044] [2024-06-28 02:24:28,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:28,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:28,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:28,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:28,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:28,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:28,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 250 transitions, 3142 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:28,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:28,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:28,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:28,996 INFO L124 PetriNetUnfolderBase]: 774/1385 cut-off events. [2024-06-28 02:24:28,997 INFO L125 PetriNetUnfolderBase]: For 61757/61757 co-relation queries the response was YES. [2024-06-28 02:24:29,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9047 conditions, 1385 events. 774/1385 cut-off events. For 61757/61757 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7403 event pairs, 120 based on Foata normal form. 2/1387 useless extension candidates. Maximal degree in co-relation 8913. Up to 859 conditions per place. [2024-06-28 02:24:29,011 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 183 selfloop transitions, 90 changer transitions 0/275 dead transitions. [2024-06-28 02:24:29,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 275 transitions, 3824 flow [2024-06-28 02:24:29,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:29,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:29,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 02:24:29,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-28 02:24:29,013 INFO L175 Difference]: Start difference. First operand has 286 places, 250 transitions, 3142 flow. Second operand 10 states and 121 transitions. [2024-06-28 02:24:29,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 275 transitions, 3824 flow [2024-06-28 02:24:29,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 275 transitions, 3660 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:29,291 INFO L231 Difference]: Finished difference. Result has 290 places, 254 transitions, 3237 flow [2024-06-28 02:24:29,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2978, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3237, PETRI_PLACES=290, PETRI_TRANSITIONS=254} [2024-06-28 02:24:29,292 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-28 02:24:29,292 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 254 transitions, 3237 flow [2024-06-28 02:24:29,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:29,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:29,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:29,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 02:24:29,292 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:29,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:29,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1069352243, now seen corresponding path program 5 times [2024-06-28 02:24:29,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:29,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305230933] [2024-06-28 02:24:29,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:29,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:30,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:30,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305230933] [2024-06-28 02:24:30,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305230933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:30,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:30,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:30,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749154951] [2024-06-28 02:24:30,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:30,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:30,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:30,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:30,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:30,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:30,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 254 transitions, 3237 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:30,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:30,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:30,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:31,125 INFO L124 PetriNetUnfolderBase]: 792/1415 cut-off events. [2024-06-28 02:24:31,125 INFO L125 PetriNetUnfolderBase]: For 63749/63749 co-relation queries the response was YES. [2024-06-28 02:24:31,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9293 conditions, 1415 events. 792/1415 cut-off events. For 63749/63749 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7605 event pairs, 90 based on Foata normal form. 2/1417 useless extension candidates. Maximal degree in co-relation 9157. Up to 893 conditions per place. [2024-06-28 02:24:31,139 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 157 selfloop transitions, 122 changer transitions 0/281 dead transitions. [2024-06-28 02:24:31,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 281 transitions, 3957 flow [2024-06-28 02:24:31,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:31,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 02:24:31,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-28 02:24:31,140 INFO L175 Difference]: Start difference. First operand has 290 places, 254 transitions, 3237 flow. Second operand 10 states and 119 transitions. [2024-06-28 02:24:31,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 281 transitions, 3957 flow [2024-06-28 02:24:31,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 281 transitions, 3746 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 02:24:31,389 INFO L231 Difference]: Finished difference. Result has 295 places, 260 transitions, 3373 flow [2024-06-28 02:24:31,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3032, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3373, PETRI_PLACES=295, PETRI_TRANSITIONS=260} [2024-06-28 02:24:31,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-28 02:24:31,390 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 260 transitions, 3373 flow [2024-06-28 02:24:31,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:31,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:31,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:31,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 02:24:31,390 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:31,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:31,391 INFO L85 PathProgramCache]: Analyzing trace with hash -938596609, now seen corresponding path program 19 times [2024-06-28 02:24:31,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:31,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319097207] [2024-06-28 02:24:31,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:31,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:32,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:32,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319097207] [2024-06-28 02:24:32,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319097207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:32,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:32,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:32,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559500417] [2024-06-28 02:24:32,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:32,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:32,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:32,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:32,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:32,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:32,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 260 transitions, 3373 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:32,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:32,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:32,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:32,995 INFO L124 PetriNetUnfolderBase]: 796/1423 cut-off events. [2024-06-28 02:24:32,995 INFO L125 PetriNetUnfolderBase]: For 65582/65582 co-relation queries the response was YES. [2024-06-28 02:24:33,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9515 conditions, 1423 events. 796/1423 cut-off events. For 65582/65582 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7633 event pairs, 116 based on Foata normal form. 2/1425 useless extension candidates. Maximal degree in co-relation 9377. Up to 1098 conditions per place. [2024-06-28 02:24:33,007 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 204 selfloop transitions, 70 changer transitions 0/276 dead transitions. [2024-06-28 02:24:33,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 276 transitions, 4001 flow [2024-06-28 02:24:33,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:33,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 02:24:33,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 02:24:33,008 INFO L175 Difference]: Start difference. First operand has 295 places, 260 transitions, 3373 flow. Second operand 9 states and 102 transitions. [2024-06-28 02:24:33,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 276 transitions, 4001 flow [2024-06-28 02:24:33,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 276 transitions, 3777 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 02:24:33,255 INFO L231 Difference]: Finished difference. Result has 299 places, 261 transitions, 3327 flow [2024-06-28 02:24:33,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3149, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3327, PETRI_PLACES=299, PETRI_TRANSITIONS=261} [2024-06-28 02:24:33,256 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-28 02:24:33,256 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 261 transitions, 3327 flow [2024-06-28 02:24:33,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:33,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:33,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:33,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 02:24:33,257 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:33,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:33,257 INFO L85 PathProgramCache]: Analyzing trace with hash 944918771, now seen corresponding path program 6 times [2024-06-28 02:24:33,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:33,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748818362] [2024-06-28 02:24:33,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:33,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:34,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:34,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:34,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748818362] [2024-06-28 02:24:34,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748818362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:34,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:34,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:34,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607955321] [2024-06-28 02:24:34,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:34,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:34,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:34,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:34,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:34,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:34,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 261 transitions, 3327 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:34,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:34,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:34,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:35,172 INFO L124 PetriNetUnfolderBase]: 812/1449 cut-off events. [2024-06-28 02:24:35,172 INFO L125 PetriNetUnfolderBase]: For 72544/72544 co-relation queries the response was YES. [2024-06-28 02:24:35,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9699 conditions, 1449 events. 812/1449 cut-off events. For 72544/72544 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7822 event pairs, 95 based on Foata normal form. 2/1451 useless extension candidates. Maximal degree in co-relation 9560. Up to 630 conditions per place. [2024-06-28 02:24:35,189 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 179 selfloop transitions, 110 changer transitions 0/291 dead transitions. [2024-06-28 02:24:35,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 291 transitions, 4393 flow [2024-06-28 02:24:35,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:35,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:35,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:24:35,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 02:24:35,190 INFO L175 Difference]: Start difference. First operand has 299 places, 261 transitions, 3327 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:24:35,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 291 transitions, 4393 flow [2024-06-28 02:24:35,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 291 transitions, 4225 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:35,479 INFO L231 Difference]: Finished difference. Result has 302 places, 268 transitions, 3520 flow [2024-06-28 02:24:35,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3159, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3520, PETRI_PLACES=302, PETRI_TRANSITIONS=268} [2024-06-28 02:24:35,480 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-28 02:24:35,480 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 268 transitions, 3520 flow [2024-06-28 02:24:35,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:35,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:35,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:35,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 02:24:35,481 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:35,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:35,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1200499379, now seen corresponding path program 4 times [2024-06-28 02:24:35,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:35,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133225125] [2024-06-28 02:24:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:35,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:36,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:36,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:36,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133225125] [2024-06-28 02:24:36,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133225125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:36,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:36,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:36,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509092485] [2024-06-28 02:24:36,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:36,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:36,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:36,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:36,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:36,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:36,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 268 transitions, 3520 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:36,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:36,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:36,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:37,020 INFO L124 PetriNetUnfolderBase]: 820/1466 cut-off events. [2024-06-28 02:24:37,020 INFO L125 PetriNetUnfolderBase]: For 78694/78694 co-relation queries the response was YES. [2024-06-28 02:24:37,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9892 conditions, 1466 events. 820/1466 cut-off events. For 78694/78694 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7975 event pairs, 151 based on Foata normal form. 4/1470 useless extension candidates. Maximal degree in co-relation 9752. Up to 1167 conditions per place. [2024-06-28 02:24:37,033 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 206 selfloop transitions, 79 changer transitions 0/287 dead transitions. [2024-06-28 02:24:37,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 287 transitions, 4178 flow [2024-06-28 02:24:37,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:37,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:37,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 02:24:37,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-28 02:24:37,035 INFO L175 Difference]: Start difference. First operand has 302 places, 268 transitions, 3520 flow. Second operand 11 states and 120 transitions. [2024-06-28 02:24:37,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 287 transitions, 4178 flow [2024-06-28 02:24:37,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 287 transitions, 3918 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:37,359 INFO L231 Difference]: Finished difference. Result has 304 places, 269 transitions, 3446 flow [2024-06-28 02:24:37,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3260, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3446, PETRI_PLACES=304, PETRI_TRANSITIONS=269} [2024-06-28 02:24:37,359 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-28 02:24:37,359 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 269 transitions, 3446 flow [2024-06-28 02:24:37,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:37,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:37,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:37,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 02:24:37,360 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:37,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:37,361 INFO L85 PathProgramCache]: Analyzing trace with hash -938600329, now seen corresponding path program 20 times [2024-06-28 02:24:37,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:37,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104303493] [2024-06-28 02:24:37,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:37,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:38,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:38,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104303493] [2024-06-28 02:24:38,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104303493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:38,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:38,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:38,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895345526] [2024-06-28 02:24:38,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:38,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:38,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:38,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:38,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:38,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:38,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 269 transitions, 3446 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:38,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:38,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:38,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:39,077 INFO L124 PetriNetUnfolderBase]: 817/1460 cut-off events. [2024-06-28 02:24:39,077 INFO L125 PetriNetUnfolderBase]: For 70768/70768 co-relation queries the response was YES. [2024-06-28 02:24:39,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9594 conditions, 1460 events. 817/1460 cut-off events. For 70768/70768 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7883 event pairs, 120 based on Foata normal form. 2/1462 useless extension candidates. Maximal degree in co-relation 9456. Up to 1109 conditions per place. [2024-06-28 02:24:39,093 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 209 selfloop transitions, 73 changer transitions 0/284 dead transitions. [2024-06-28 02:24:39,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 284 transitions, 4056 flow [2024-06-28 02:24:39,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:39,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 02:24:39,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 02:24:39,094 INFO L175 Difference]: Start difference. First operand has 304 places, 269 transitions, 3446 flow. Second operand 9 states and 102 transitions. [2024-06-28 02:24:39,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 284 transitions, 4056 flow [2024-06-28 02:24:39,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 284 transitions, 3837 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 02:24:39,390 INFO L231 Difference]: Finished difference. Result has 303 places, 269 transitions, 3377 flow [2024-06-28 02:24:39,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3227, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3377, PETRI_PLACES=303, PETRI_TRANSITIONS=269} [2024-06-28 02:24:39,404 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-28 02:24:39,405 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 269 transitions, 3377 flow [2024-06-28 02:24:39,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:39,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:39,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:39,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 02:24:39,405 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:39,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:39,406 INFO L85 PathProgramCache]: Analyzing trace with hash 952338001, now seen corresponding path program 5 times [2024-06-28 02:24:39,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:39,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425001827] [2024-06-28 02:24:39,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:39,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:40,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:40,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425001827] [2024-06-28 02:24:40,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425001827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:40,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:40,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:40,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31285833] [2024-06-28 02:24:40,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:40,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:40,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:40,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:40,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:40,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:40,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 269 transitions, 3377 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:40,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:40,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:40,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:40,865 INFO L124 PetriNetUnfolderBase]: 825/1477 cut-off events. [2024-06-28 02:24:40,865 INFO L125 PetriNetUnfolderBase]: For 77042/77042 co-relation queries the response was YES. [2024-06-28 02:24:40,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9643 conditions, 1477 events. 825/1477 cut-off events. For 77042/77042 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 8067 event pairs, 154 based on Foata normal form. 4/1481 useless extension candidates. Maximal degree in co-relation 9504. Up to 1178 conditions per place. [2024-06-28 02:24:40,881 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 212 selfloop transitions, 74 changer transitions 0/288 dead transitions. [2024-06-28 02:24:40,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 288 transitions, 4039 flow [2024-06-28 02:24:40,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:40,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:40,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:24:40,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:24:40,883 INFO L175 Difference]: Start difference. First operand has 303 places, 269 transitions, 3377 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:24:40,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 288 transitions, 4039 flow [2024-06-28 02:24:41,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 288 transitions, 3759 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:41,206 INFO L231 Difference]: Finished difference. Result has 305 places, 270 transitions, 3275 flow [2024-06-28 02:24:41,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3097, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3275, PETRI_PLACES=305, PETRI_TRANSITIONS=270} [2024-06-28 02:24:41,207 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-28 02:24:41,207 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 270 transitions, 3275 flow [2024-06-28 02:24:41,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:41,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:41,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:41,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 02:24:41,207 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:41,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:41,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1514188689, now seen corresponding path program 7 times [2024-06-28 02:24:41,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:41,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433187652] [2024-06-28 02:24:41,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:41,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:42,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:42,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433187652] [2024-06-28 02:24:42,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433187652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:42,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:42,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:42,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764976582] [2024-06-28 02:24:42,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:42,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:42,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:42,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:42,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:42,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:42,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 270 transitions, 3275 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:42,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:42,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:42,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:42,702 INFO L124 PetriNetUnfolderBase]: 827/1479 cut-off events. [2024-06-28 02:24:42,702 INFO L125 PetriNetUnfolderBase]: For 73988/73988 co-relation queries the response was YES. [2024-06-28 02:24:42,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9266 conditions, 1479 events. 827/1479 cut-off events. For 73988/73988 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 8049 event pairs, 299 based on Foata normal form. 4/1483 useless extension candidates. Maximal degree in co-relation 9127. Up to 1404 conditions per place. [2024-06-28 02:24:42,718 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 261 selfloop transitions, 23 changer transitions 0/286 dead transitions. [2024-06-28 02:24:42,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 286 transitions, 4071 flow [2024-06-28 02:24:42,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:42,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:42,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 02:24:42,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-28 02:24:42,719 INFO L175 Difference]: Start difference. First operand has 305 places, 270 transitions, 3275 flow. Second operand 10 states and 106 transitions. [2024-06-28 02:24:42,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 286 transitions, 4071 flow [2024-06-28 02:24:42,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 286 transitions, 3728 flow, removed 40 selfloop flow, removed 12 redundant places. [2024-06-28 02:24:42,965 INFO L231 Difference]: Finished difference. Result has 304 places, 272 transitions, 3041 flow [2024-06-28 02:24:42,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2940, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3041, PETRI_PLACES=304, PETRI_TRANSITIONS=272} [2024-06-28 02:24:42,966 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-28 02:24:42,966 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 272 transitions, 3041 flow [2024-06-28 02:24:42,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:42,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:42,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:42,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 02:24:42,966 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:42,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:42,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1525626449, now seen corresponding path program 6 times [2024-06-28 02:24:42,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:42,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817023321] [2024-06-28 02:24:42,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:42,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:43,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:43,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:43,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817023321] [2024-06-28 02:24:43,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817023321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:43,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:43,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:43,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066397085] [2024-06-28 02:24:43,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:43,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:43,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:43,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:43,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:43,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:43,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 272 transitions, 3041 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:43,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:43,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:43,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:44,204 INFO L124 PetriNetUnfolderBase]: 849/1521 cut-off events. [2024-06-28 02:24:44,205 INFO L125 PetriNetUnfolderBase]: For 81538/81538 co-relation queries the response was YES. [2024-06-28 02:24:44,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9314 conditions, 1521 events. 849/1521 cut-off events. For 81538/81538 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 8328 event pairs, 299 based on Foata normal form. 4/1525 useless extension candidates. Maximal degree in co-relation 9175. Up to 1409 conditions per place. [2024-06-28 02:24:44,221 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 267 selfloop transitions, 20 changer transitions 0/289 dead transitions. [2024-06-28 02:24:44,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 289 transitions, 3851 flow [2024-06-28 02:24:44,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:44,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:44,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 02:24:44,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-28 02:24:44,222 INFO L175 Difference]: Start difference. First operand has 304 places, 272 transitions, 3041 flow. Second operand 10 states and 102 transitions. [2024-06-28 02:24:44,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 289 transitions, 3851 flow [2024-06-28 02:24:44,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 289 transitions, 3787 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:44,516 INFO L231 Difference]: Finished difference. Result has 305 places, 274 transitions, 3071 flow [2024-06-28 02:24:44,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2977, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3071, PETRI_PLACES=305, PETRI_TRANSITIONS=274} [2024-06-28 02:24:44,516 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-28 02:24:44,516 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 274 transitions, 3071 flow [2024-06-28 02:24:44,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:44,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:44,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:44,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 02:24:44,517 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:44,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:44,517 INFO L85 PathProgramCache]: Analyzing trace with hash -731516237, now seen corresponding path program 7 times [2024-06-28 02:24:44,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:44,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777104807] [2024-06-28 02:24:44,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:44,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:45,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:45,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:45,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777104807] [2024-06-28 02:24:45,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777104807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:45,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:45,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:45,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633524221] [2024-06-28 02:24:45,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:45,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:45,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:45,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:45,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:45,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:45,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 274 transitions, 3071 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:45,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:45,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:45,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:46,150 INFO L124 PetriNetUnfolderBase]: 850/1526 cut-off events. [2024-06-28 02:24:46,150 INFO L125 PetriNetUnfolderBase]: For 77842/77842 co-relation queries the response was YES. [2024-06-28 02:24:46,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9220 conditions, 1526 events. 850/1526 cut-off events. For 77842/77842 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8406 event pairs, 176 based on Foata normal form. 4/1530 useless extension candidates. Maximal degree in co-relation 9081. Up to 1227 conditions per place. [2024-06-28 02:24:46,166 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 220 selfloop transitions, 71 changer transitions 0/293 dead transitions. [2024-06-28 02:24:46,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 293 transitions, 3745 flow [2024-06-28 02:24:46,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:46,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:46,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:24:46,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 02:24:46,167 INFO L175 Difference]: Start difference. First operand has 305 places, 274 transitions, 3071 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:24:46,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 293 transitions, 3745 flow [2024-06-28 02:24:46,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 293 transitions, 3698 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 02:24:46,491 INFO L231 Difference]: Finished difference. Result has 310 places, 275 transitions, 3198 flow [2024-06-28 02:24:46,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3024, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3198, PETRI_PLACES=310, PETRI_TRANSITIONS=275} [2024-06-28 02:24:46,491 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-28 02:24:46,492 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 275 transitions, 3198 flow [2024-06-28 02:24:46,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:46,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:46,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:46,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 02:24:46,492 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:46,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:46,492 INFO L85 PathProgramCache]: Analyzing trace with hash -755383623, now seen corresponding path program 8 times [2024-06-28 02:24:46,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:46,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581110040] [2024-06-28 02:24:46,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:46,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:47,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:47,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581110040] [2024-06-28 02:24:47,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581110040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:47,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:47,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:47,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950045157] [2024-06-28 02:24:47,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:47,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:47,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:47,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:47,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:47,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:47,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 275 transitions, 3198 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:47,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:47,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:47,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:48,206 INFO L124 PetriNetUnfolderBase]: 844/1514 cut-off events. [2024-06-28 02:24:48,206 INFO L125 PetriNetUnfolderBase]: For 69842/69842 co-relation queries the response was YES. [2024-06-28 02:24:48,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9023 conditions, 1514 events. 844/1514 cut-off events. For 69842/69842 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 8298 event pairs, 306 based on Foata normal form. 4/1518 useless extension candidates. Maximal degree in co-relation 8882. Up to 1457 conditions per place. [2024-06-28 02:24:48,222 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 270 selfloop transitions, 18 changer transitions 0/290 dead transitions. [2024-06-28 02:24:48,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 290 transitions, 3826 flow [2024-06-28 02:24:48,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:48,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:48,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-28 02:24:48,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039772727272727 [2024-06-28 02:24:48,223 INFO L175 Difference]: Start difference. First operand has 310 places, 275 transitions, 3198 flow. Second operand 11 states and 107 transitions. [2024-06-28 02:24:48,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 290 transitions, 3826 flow [2024-06-28 02:24:48,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 290 transitions, 3591 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-28 02:24:48,469 INFO L231 Difference]: Finished difference. Result has 312 places, 276 transitions, 3018 flow [2024-06-28 02:24:48,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2965, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3018, PETRI_PLACES=312, PETRI_TRANSITIONS=276} [2024-06-28 02:24:48,469 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-28 02:24:48,470 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 276 transitions, 3018 flow [2024-06-28 02:24:48,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:48,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:48,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:48,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 02:24:48,470 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:48,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:48,470 INFO L85 PathProgramCache]: Analyzing trace with hash -273947583, now seen corresponding path program 1 times [2024-06-28 02:24:48,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:48,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268310061] [2024-06-28 02:24:48,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:48,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:49,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:49,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:49,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268310061] [2024-06-28 02:24:49,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268310061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:49,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:49,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:24:49,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98055215] [2024-06-28 02:24:49,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:49,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:24:49,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:49,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:24:49,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:24:49,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:49,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 276 transitions, 3018 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:49,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:49,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:49,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:50,096 INFO L124 PetriNetUnfolderBase]: 848/1523 cut-off events. [2024-06-28 02:24:50,096 INFO L125 PetriNetUnfolderBase]: For 65317/65317 co-relation queries the response was YES. [2024-06-28 02:24:50,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8860 conditions, 1523 events. 848/1523 cut-off events. For 65317/65317 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 8338 event pairs, 184 based on Foata normal form. 2/1525 useless extension candidates. Maximal degree in co-relation 8717. Up to 1403 conditions per place. [2024-06-28 02:24:50,112 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 269 selfloop transitions, 27 changer transitions 0/298 dead transitions. [2024-06-28 02:24:50,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 298 transitions, 3678 flow [2024-06-28 02:24:50,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:50,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:50,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 02:24:50,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-28 02:24:50,114 INFO L175 Difference]: Start difference. First operand has 312 places, 276 transitions, 3018 flow. Second operand 11 states and 115 transitions. [2024-06-28 02:24:50,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 298 transitions, 3678 flow [2024-06-28 02:24:50,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 298 transitions, 3639 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:50,389 INFO L231 Difference]: Finished difference. Result has 314 places, 277 transitions, 3053 flow [2024-06-28 02:24:50,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2979, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3053, PETRI_PLACES=314, PETRI_TRANSITIONS=277} [2024-06-28 02:24:50,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-28 02:24:50,390 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 277 transitions, 3053 flow [2024-06-28 02:24:50,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:50,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:50,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:50,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 02:24:50,391 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:50,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:50,391 INFO L85 PathProgramCache]: Analyzing trace with hash -15251649, now seen corresponding path program 2 times [2024-06-28 02:24:50,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:50,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508262930] [2024-06-28 02:24:50,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:50,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:51,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:51,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:51,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508262930] [2024-06-28 02:24:51,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508262930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:51,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:51,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:24:51,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608256574] [2024-06-28 02:24:51,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:51,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:24:51,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:51,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:24:51,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:24:51,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:51,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 277 transitions, 3053 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:51,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:51,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:51,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:52,195 INFO L124 PetriNetUnfolderBase]: 852/1531 cut-off events. [2024-06-28 02:24:52,196 INFO L125 PetriNetUnfolderBase]: For 66585/66585 co-relation queries the response was YES. [2024-06-28 02:24:52,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8962 conditions, 1531 events. 852/1531 cut-off events. For 66585/66585 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 8420 event pairs, 193 based on Foata normal form. 2/1533 useless extension candidates. Maximal degree in co-relation 8818. Up to 1410 conditions per place. [2024-06-28 02:24:52,212 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 263 selfloop transitions, 33 changer transitions 0/298 dead transitions. [2024-06-28 02:24:52,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 298 transitions, 3717 flow [2024-06-28 02:24:52,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:52,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:52,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 02:24:52,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-28 02:24:52,213 INFO L175 Difference]: Start difference. First operand has 314 places, 277 transitions, 3053 flow. Second operand 11 states and 117 transitions. [2024-06-28 02:24:52,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 298 transitions, 3717 flow [2024-06-28 02:24:52,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 298 transitions, 3653 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:52,514 INFO L231 Difference]: Finished difference. Result has 316 places, 278 transitions, 3077 flow [2024-06-28 02:24:52,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2989, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3077, PETRI_PLACES=316, PETRI_TRANSITIONS=278} [2024-06-28 02:24:52,515 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-28 02:24:52,515 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 278 transitions, 3077 flow [2024-06-28 02:24:52,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:52,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:52,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:52,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 02:24:52,515 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:52,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:52,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1873793665, now seen corresponding path program 3 times [2024-06-28 02:24:52,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:52,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552811418] [2024-06-28 02:24:52,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:52,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:53,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:53,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552811418] [2024-06-28 02:24:53,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552811418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:53,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:53,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:24:53,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714378266] [2024-06-28 02:24:53,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:53,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:24:53,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:53,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:24:53,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:24:53,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:53,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 278 transitions, 3077 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:53,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:53,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:53,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:54,052 INFO L124 PetriNetUnfolderBase]: 856/1539 cut-off events. [2024-06-28 02:24:54,053 INFO L125 PetriNetUnfolderBase]: For 68923/68923 co-relation queries the response was YES. [2024-06-28 02:24:54,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9035 conditions, 1539 events. 856/1539 cut-off events. For 68923/68923 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 8483 event pairs, 192 based on Foata normal form. 2/1541 useless extension candidates. Maximal degree in co-relation 8890. Up to 1402 conditions per place. [2024-06-28 02:24:54,069 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 264 selfloop transitions, 33 changer transitions 0/299 dead transitions. [2024-06-28 02:24:54,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 299 transitions, 3743 flow [2024-06-28 02:24:54,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:54,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:54,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 02:24:54,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-28 02:24:54,070 INFO L175 Difference]: Start difference. First operand has 316 places, 278 transitions, 3077 flow. Second operand 11 states and 118 transitions. [2024-06-28 02:24:54,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 299 transitions, 3743 flow [2024-06-28 02:24:54,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 299 transitions, 3665 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:54,367 INFO L231 Difference]: Finished difference. Result has 318 places, 279 transitions, 3089 flow [2024-06-28 02:24:54,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2999, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3089, PETRI_PLACES=318, PETRI_TRANSITIONS=279} [2024-06-28 02:24:54,367 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-28 02:24:54,367 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 279 transitions, 3089 flow [2024-06-28 02:24:54,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:54,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:54,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:54,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 02:24:54,368 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:54,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:54,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1869815125, now seen corresponding path program 4 times [2024-06-28 02:24:54,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:54,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055552412] [2024-06-28 02:24:54,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:54,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:55,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:55,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055552412] [2024-06-28 02:24:55,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055552412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:55,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:55,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:24:55,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886148035] [2024-06-28 02:24:55,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:55,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:24:55,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:55,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:24:55,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:24:55,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:55,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 279 transitions, 3089 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:55,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:55,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:55,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:55,968 INFO L124 PetriNetUnfolderBase]: 860/1547 cut-off events. [2024-06-28 02:24:55,968 INFO L125 PetriNetUnfolderBase]: For 70715/70715 co-relation queries the response was YES. [2024-06-28 02:24:55,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9094 conditions, 1547 events. 860/1547 cut-off events. For 70715/70715 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8561 event pairs, 189 based on Foata normal form. 2/1549 useless extension candidates. Maximal degree in co-relation 8948. Up to 1386 conditions per place. [2024-06-28 02:24:55,986 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 264 selfloop transitions, 34 changer transitions 0/300 dead transitions. [2024-06-28 02:24:55,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 300 transitions, 3757 flow [2024-06-28 02:24:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 02:24:55,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-28 02:24:55,987 INFO L175 Difference]: Start difference. First operand has 318 places, 279 transitions, 3089 flow. Second operand 11 states and 119 transitions. [2024-06-28 02:24:55,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 300 transitions, 3757 flow [2024-06-28 02:24:56,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 300 transitions, 3677 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:56,403 INFO L231 Difference]: Finished difference. Result has 320 places, 280 transitions, 3103 flow [2024-06-28 02:24:56,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3009, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3103, PETRI_PLACES=320, PETRI_TRANSITIONS=280} [2024-06-28 02:24:56,404 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-28 02:24:56,404 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 280 transitions, 3103 flow [2024-06-28 02:24:56,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:56,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:56,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:56,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 02:24:56,405 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:56,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:56,405 INFO L85 PathProgramCache]: Analyzing trace with hash 913163261, now seen corresponding path program 5 times [2024-06-28 02:24:56,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:56,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649398365] [2024-06-28 02:24:56,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:56,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:57,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:57,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:57,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649398365] [2024-06-28 02:24:57,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649398365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:57,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:57,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:57,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338383396] [2024-06-28 02:24:57,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:57,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:57,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:57,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:57,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:57,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:57,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 280 transitions, 3103 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:57,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:57,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:57,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:57,992 INFO L124 PetriNetUnfolderBase]: 864/1555 cut-off events. [2024-06-28 02:24:57,993 INFO L125 PetriNetUnfolderBase]: For 72471/72471 co-relation queries the response was YES. [2024-06-28 02:24:58,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9155 conditions, 1555 events. 864/1555 cut-off events. For 72471/72471 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8597 event pairs, 167 based on Foata normal form. 2/1557 useless extension candidates. Maximal degree in co-relation 9008. Up to 1400 conditions per place. [2024-06-28 02:24:58,010 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 270 selfloop transitions, 30 changer transitions 0/302 dead transitions. [2024-06-28 02:24:58,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 302 transitions, 3777 flow [2024-06-28 02:24:58,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:58,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:58,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-28 02:24:58,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-28 02:24:58,011 INFO L175 Difference]: Start difference. First operand has 320 places, 280 transitions, 3103 flow. Second operand 11 states and 112 transitions. [2024-06-28 02:24:58,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 302 transitions, 3777 flow [2024-06-28 02:24:58,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 302 transitions, 3693 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:58,416 INFO L231 Difference]: Finished difference. Result has 322 places, 281 transitions, 3107 flow [2024-06-28 02:24:58,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3019, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3107, PETRI_PLACES=322, PETRI_TRANSITIONS=281} [2024-06-28 02:24:58,417 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-28 02:24:58,417 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 281 transitions, 3107 flow [2024-06-28 02:24:58,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:58,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:58,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:58,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 02:24:58,417 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:58,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:58,418 INFO L85 PathProgramCache]: Analyzing trace with hash 982589755, now seen corresponding path program 1 times [2024-06-28 02:24:58,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:58,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369177036] [2024-06-28 02:24:58,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:58,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:59,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:59,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:59,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369177036] [2024-06-28 02:24:59,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369177036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:59,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:59,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:59,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423551076] [2024-06-28 02:24:59,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:59,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:59,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:59,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:59,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:59,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:24:59,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 281 transitions, 3107 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:59,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:59,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:24:59,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:00,408 INFO L124 PetriNetUnfolderBase]: 876/1575 cut-off events. [2024-06-28 02:25:00,408 INFO L125 PetriNetUnfolderBase]: For 74255/74255 co-relation queries the response was YES. [2024-06-28 02:25:00,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9258 conditions, 1575 events. 876/1575 cut-off events. For 74255/74255 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8763 event pairs, 196 based on Foata normal form. 2/1577 useless extension candidates. Maximal degree in co-relation 9110. Up to 1444 conditions per place. [2024-06-28 02:25:00,426 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 269 selfloop transitions, 36 changer transitions 0/307 dead transitions. [2024-06-28 02:25:00,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 307 transitions, 3839 flow [2024-06-28 02:25:00,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:25:00,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:25:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 02:25:00,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-28 02:25:00,427 INFO L175 Difference]: Start difference. First operand has 322 places, 281 transitions, 3107 flow. Second operand 12 states and 127 transitions. [2024-06-28 02:25:00,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 307 transitions, 3839 flow [2024-06-28 02:25:00,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 307 transitions, 3761 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:00,776 INFO L231 Difference]: Finished difference. Result has 326 places, 285 transitions, 3175 flow [2024-06-28 02:25:00,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3175, PETRI_PLACES=326, PETRI_TRANSITIONS=285} [2024-06-28 02:25:00,777 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 295 predicate places. [2024-06-28 02:25:00,777 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 285 transitions, 3175 flow [2024-06-28 02:25:00,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:00,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:00,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:00,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 02:25:00,778 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:00,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:00,778 INFO L85 PathProgramCache]: Analyzing trace with hash -269657779, now seen corresponding path program 6 times [2024-06-28 02:25:00,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:00,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392058926] [2024-06-28 02:25:00,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:00,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:01,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:01,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:01,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392058926] [2024-06-28 02:25:01,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392058926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:01,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:01,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:01,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085505100] [2024-06-28 02:25:01,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:01,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:01,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:01,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:01,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:01,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:01,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 285 transitions, 3175 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:01,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:01,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:01,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:02,430 INFO L124 PetriNetUnfolderBase]: 880/1582 cut-off events. [2024-06-28 02:25:02,430 INFO L125 PetriNetUnfolderBase]: For 76003/76003 co-relation queries the response was YES. [2024-06-28 02:25:02,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9340 conditions, 1582 events. 880/1582 cut-off events. For 76003/76003 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8802 event pairs, 172 based on Foata normal form. 2/1584 useless extension candidates. Maximal degree in co-relation 9190. Up to 1470 conditions per place. [2024-06-28 02:25:02,448 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 274 selfloop transitions, 30 changer transitions 0/306 dead transitions. [2024-06-28 02:25:02,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 306 transitions, 3865 flow [2024-06-28 02:25:02,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:02,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:02,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 02:25:02,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-28 02:25:02,449 INFO L175 Difference]: Start difference. First operand has 326 places, 285 transitions, 3175 flow. Second operand 11 states and 119 transitions. [2024-06-28 02:25:02,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 306 transitions, 3865 flow [2024-06-28 02:25:02,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 306 transitions, 3763 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:02,892 INFO L231 Difference]: Finished difference. Result has 328 places, 286 transitions, 3163 flow [2024-06-28 02:25:02,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3073, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3163, PETRI_PLACES=328, PETRI_TRANSITIONS=286} [2024-06-28 02:25:02,893 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-28 02:25:02,893 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 286 transitions, 3163 flow [2024-06-28 02:25:02,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:02,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:02,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:02,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 02:25:02,894 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:02,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:02,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1448681277, now seen corresponding path program 7 times [2024-06-28 02:25:02,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:02,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983402421] [2024-06-28 02:25:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:02,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:04,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:04,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:04,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983402421] [2024-06-28 02:25:04,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983402421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:04,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:04,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:04,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868024192] [2024-06-28 02:25:04,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:04,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:04,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:04,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:04,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:04,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:04,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 286 transitions, 3163 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:04,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:04,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:04,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:04,646 INFO L124 PetriNetUnfolderBase]: 884/1590 cut-off events. [2024-06-28 02:25:04,646 INFO L125 PetriNetUnfolderBase]: For 78057/78057 co-relation queries the response was YES. [2024-06-28 02:25:04,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9378 conditions, 1590 events. 884/1590 cut-off events. For 78057/78057 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8874 event pairs, 172 based on Foata normal form. 2/1592 useless extension candidates. Maximal degree in co-relation 9227. Up to 1464 conditions per place. [2024-06-28 02:25:04,665 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 274 selfloop transitions, 31 changer transitions 0/307 dead transitions. [2024-06-28 02:25:04,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 307 transitions, 3855 flow [2024-06-28 02:25:04,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:04,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:04,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 02:25:04,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-28 02:25:04,666 INFO L175 Difference]: Start difference. First operand has 328 places, 286 transitions, 3163 flow. Second operand 11 states and 120 transitions. [2024-06-28 02:25:04,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 307 transitions, 3855 flow [2024-06-28 02:25:05,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 307 transitions, 3775 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:05,109 INFO L231 Difference]: Finished difference. Result has 330 places, 287 transitions, 3177 flow [2024-06-28 02:25:05,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3083, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3177, PETRI_PLACES=330, PETRI_TRANSITIONS=287} [2024-06-28 02:25:05,110 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2024-06-28 02:25:05,110 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 287 transitions, 3177 flow [2024-06-28 02:25:05,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:05,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:05,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:05,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 02:25:05,110 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:05,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:05,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1448565957, now seen corresponding path program 8 times [2024-06-28 02:25:05,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:05,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142407926] [2024-06-28 02:25:05,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:05,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:06,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:06,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:06,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142407926] [2024-06-28 02:25:06,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142407926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:06,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:06,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:06,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613743854] [2024-06-28 02:25:06,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:06,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:06,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:06,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:06,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:06,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:06,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 287 transitions, 3177 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:06,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:06,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:06,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:06,794 INFO L124 PetriNetUnfolderBase]: 888/1598 cut-off events. [2024-06-28 02:25:06,794 INFO L125 PetriNetUnfolderBase]: For 80000/80000 co-relation queries the response was YES. [2024-06-28 02:25:06,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9439 conditions, 1598 events. 888/1598 cut-off events. For 80000/80000 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8927 event pairs, 172 based on Foata normal form. 2/1600 useless extension candidates. Maximal degree in co-relation 9287. Up to 1450 conditions per place. [2024-06-28 02:25:06,812 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 274 selfloop transitions, 32 changer transitions 0/308 dead transitions. [2024-06-28 02:25:06,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 308 transitions, 3871 flow [2024-06-28 02:25:06,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:06,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:06,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:25:06,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:25:06,813 INFO L175 Difference]: Start difference. First operand has 330 places, 287 transitions, 3177 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:25:06,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 308 transitions, 3871 flow [2024-06-28 02:25:07,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 308 transitions, 3787 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:07,207 INFO L231 Difference]: Finished difference. Result has 332 places, 288 transitions, 3191 flow [2024-06-28 02:25:07,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3093, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3191, PETRI_PLACES=332, PETRI_TRANSITIONS=288} [2024-06-28 02:25:07,208 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-28 02:25:07,208 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 288 transitions, 3191 flow [2024-06-28 02:25:07,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:07,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:07,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:07,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 02:25:07,208 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:07,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:07,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1390473507, now seen corresponding path program 9 times [2024-06-28 02:25:07,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:07,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700222485] [2024-06-28 02:25:07,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:07,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:08,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:08,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700222485] [2024-06-28 02:25:08,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700222485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:08,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:08,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:08,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984314214] [2024-06-28 02:25:08,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:08,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:08,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:08,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:08,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:08,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:08,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 288 transitions, 3191 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:08,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:08,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:08,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:08,745 INFO L124 PetriNetUnfolderBase]: 892/1606 cut-off events. [2024-06-28 02:25:08,746 INFO L125 PetriNetUnfolderBase]: For 82093/82093 co-relation queries the response was YES. [2024-06-28 02:25:08,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9502 conditions, 1606 events. 892/1606 cut-off events. For 82093/82093 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8979 event pairs, 170 based on Foata normal form. 2/1608 useless extension candidates. Maximal degree in co-relation 9349. Up to 1490 conditions per place. [2024-06-28 02:25:08,764 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 281 selfloop transitions, 27 changer transitions 0/310 dead transitions. [2024-06-28 02:25:08,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 310 transitions, 3893 flow [2024-06-28 02:25:08,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:08,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:08,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 02:25:08,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-28 02:25:08,766 INFO L175 Difference]: Start difference. First operand has 332 places, 288 transitions, 3191 flow. Second operand 11 states and 117 transitions. [2024-06-28 02:25:08,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 310 transitions, 3893 flow [2024-06-28 02:25:09,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 310 transitions, 3805 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:09,187 INFO L231 Difference]: Finished difference. Result has 334 places, 289 transitions, 3193 flow [2024-06-28 02:25:09,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3103, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3193, PETRI_PLACES=334, PETRI_TRANSITIONS=289} [2024-06-28 02:25:09,188 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-28 02:25:09,188 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 289 transitions, 3193 flow [2024-06-28 02:25:09,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:09,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:09,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:09,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 02:25:09,189 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:09,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:09,189 INFO L85 PathProgramCache]: Analyzing trace with hash -154186685, now seen corresponding path program 2 times [2024-06-28 02:25:09,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:09,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177854869] [2024-06-28 02:25:09,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:09,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:10,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:10,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:10,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177854869] [2024-06-28 02:25:10,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177854869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:10,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:10,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:10,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549137693] [2024-06-28 02:25:10,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:10,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:10,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:10,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:10,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:10,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:10,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 289 transitions, 3193 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:10,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:10,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:10,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:10,851 INFO L124 PetriNetUnfolderBase]: 904/1626 cut-off events. [2024-06-28 02:25:10,852 INFO L125 PetriNetUnfolderBase]: For 83765/83765 co-relation queries the response was YES. [2024-06-28 02:25:10,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9593 conditions, 1626 events. 904/1626 cut-off events. For 83765/83765 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 9113 event pairs, 181 based on Foata normal form. 2/1628 useless extension candidates. Maximal degree in co-relation 9439. Up to 1504 conditions per place. [2024-06-28 02:25:10,871 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 279 selfloop transitions, 32 changer transitions 0/313 dead transitions. [2024-06-28 02:25:10,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 313 transitions, 3941 flow [2024-06-28 02:25:10,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:10,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:10,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:25:10,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:25:10,872 INFO L175 Difference]: Start difference. First operand has 334 places, 289 transitions, 3193 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:25:10,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 313 transitions, 3941 flow [2024-06-28 02:25:11,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 313 transitions, 3861 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:11,385 INFO L231 Difference]: Finished difference. Result has 336 places, 292 transitions, 3243 flow [2024-06-28 02:25:11,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3113, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3243, PETRI_PLACES=336, PETRI_TRANSITIONS=292} [2024-06-28 02:25:11,386 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-28 02:25:11,386 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 292 transitions, 3243 flow [2024-06-28 02:25:11,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:11,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:11,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:11,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 02:25:11,387 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:11,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:11,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1033170585, now seen corresponding path program 10 times [2024-06-28 02:25:11,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:11,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871343871] [2024-06-28 02:25:11,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:11,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:12,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:12,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:12,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871343871] [2024-06-28 02:25:12,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871343871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:12,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:12,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:12,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673497074] [2024-06-28 02:25:12,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:12,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:12,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:12,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:12,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:12,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:12,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 292 transitions, 3243 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:12,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:12,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:12,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:13,011 INFO L124 PetriNetUnfolderBase]: 908/1634 cut-off events. [2024-06-28 02:25:13,011 INFO L125 PetriNetUnfolderBase]: For 85978/85978 co-relation queries the response was YES. [2024-06-28 02:25:13,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9667 conditions, 1634 events. 908/1634 cut-off events. For 85978/85978 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 9163 event pairs, 168 based on Foata normal form. 2/1636 useless extension candidates. Maximal degree in co-relation 9512. Up to 1375 conditions per place. [2024-06-28 02:25:13,030 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 254 selfloop transitions, 58 changer transitions 0/314 dead transitions. [2024-06-28 02:25:13,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 314 transitions, 3963 flow [2024-06-28 02:25:13,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:13,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:13,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:25:13,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-28 02:25:13,031 INFO L175 Difference]: Start difference. First operand has 336 places, 292 transitions, 3243 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:25:13,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 314 transitions, 3963 flow [2024-06-28 02:25:13,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 314 transitions, 3869 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:13,484 INFO L231 Difference]: Finished difference. Result has 338 places, 293 transitions, 3303 flow [2024-06-28 02:25:13,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3149, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3303, PETRI_PLACES=338, PETRI_TRANSITIONS=293} [2024-06-28 02:25:13,485 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-28 02:25:13,485 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 293 transitions, 3303 flow [2024-06-28 02:25:13,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:13,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:13,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:13,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 02:25:13,485 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:13,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:13,486 INFO L85 PathProgramCache]: Analyzing trace with hash -686679851, now seen corresponding path program 11 times [2024-06-28 02:25:13,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:13,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740113154] [2024-06-28 02:25:13,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:13,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:14,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:14,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740113154] [2024-06-28 02:25:14,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740113154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:14,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:14,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:14,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608538615] [2024-06-28 02:25:14,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:14,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:14,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:14,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:14,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:14,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:14,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 293 transitions, 3303 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:14,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:14,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:14,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:15,509 INFO L124 PetriNetUnfolderBase]: 912/1642 cut-off events. [2024-06-28 02:25:15,509 INFO L125 PetriNetUnfolderBase]: For 88312/88312 co-relation queries the response was YES. [2024-06-28 02:25:15,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9804 conditions, 1642 events. 912/1642 cut-off events. For 88312/88312 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 9233 event pairs, 168 based on Foata normal form. 2/1644 useless extension candidates. Maximal degree in co-relation 9648. Up to 1367 conditions per place. [2024-06-28 02:25:15,529 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 255 selfloop transitions, 58 changer transitions 0/315 dead transitions. [2024-06-28 02:25:15,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 315 transitions, 4025 flow [2024-06-28 02:25:15,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:15,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:15,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 02:25:15,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-28 02:25:15,530 INFO L175 Difference]: Start difference. First operand has 338 places, 293 transitions, 3303 flow. Second operand 11 states and 125 transitions. [2024-06-28 02:25:15,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 315 transitions, 4025 flow [2024-06-28 02:25:16,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 315 transitions, 3881 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:16,033 INFO L231 Difference]: Finished difference. Result has 340 places, 294 transitions, 3315 flow [2024-06-28 02:25:16,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3159, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3315, PETRI_PLACES=340, PETRI_TRANSITIONS=294} [2024-06-28 02:25:16,034 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-28 02:25:16,034 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 294 transitions, 3315 flow [2024-06-28 02:25:16,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:16,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:16,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:16,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 02:25:16,034 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:16,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:16,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1033290555, now seen corresponding path program 12 times [2024-06-28 02:25:16,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:16,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395141886] [2024-06-28 02:25:16,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:16,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:17,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:17,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:17,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395141886] [2024-06-28 02:25:17,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395141886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:17,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:17,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:17,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148672555] [2024-06-28 02:25:17,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:17,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:17,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:17,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:17,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:17,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:17,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 294 transitions, 3315 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:17,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:17,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:17,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:18,056 INFO L124 PetriNetUnfolderBase]: 923/1663 cut-off events. [2024-06-28 02:25:18,057 INFO L125 PetriNetUnfolderBase]: For 98705/98705 co-relation queries the response was YES. [2024-06-28 02:25:18,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10165 conditions, 1663 events. 923/1663 cut-off events. For 98705/98705 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 9396 event pairs, 175 based on Foata normal form. 2/1665 useless extension candidates. Maximal degree in co-relation 10008. Up to 1341 conditions per place. [2024-06-28 02:25:18,076 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 257 selfloop transitions, 59 changer transitions 0/318 dead transitions. [2024-06-28 02:25:18,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 318 transitions, 4257 flow [2024-06-28 02:25:18,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:18,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:18,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 02:25:18,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-28 02:25:18,077 INFO L175 Difference]: Start difference. First operand has 340 places, 294 transitions, 3315 flow. Second operand 11 states and 125 transitions. [2024-06-28 02:25:18,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 318 transitions, 4257 flow [2024-06-28 02:25:18,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 318 transitions, 4111 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:18,561 INFO L231 Difference]: Finished difference. Result has 342 places, 296 transitions, 3365 flow [2024-06-28 02:25:18,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3169, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3365, PETRI_PLACES=342, PETRI_TRANSITIONS=296} [2024-06-28 02:25:18,561 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-28 02:25:18,561 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 296 transitions, 3365 flow [2024-06-28 02:25:18,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:18,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:18,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:18,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 02:25:18,562 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:18,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:18,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1028522011, now seen corresponding path program 3 times [2024-06-28 02:25:18,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:18,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377640950] [2024-06-28 02:25:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:18,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:20,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:20,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377640950] [2024-06-28 02:25:20,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377640950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:20,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:20,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:20,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221973395] [2024-06-28 02:25:20,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:20,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:20,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:20,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:20,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:20,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:20,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 296 transitions, 3365 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:20,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:20,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:20,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:20,935 INFO L124 PetriNetUnfolderBase]: 935/1683 cut-off events. [2024-06-28 02:25:20,936 INFO L125 PetriNetUnfolderBase]: For 100595/100595 co-relation queries the response was YES. [2024-06-28 02:25:20,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10274 conditions, 1683 events. 935/1683 cut-off events. For 100595/100595 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9541 event pairs, 173 based on Foata normal form. 2/1685 useless extension candidates. Maximal degree in co-relation 10116. Up to 1414 conditions per place. [2024-06-28 02:25:20,955 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 260 selfloop transitions, 61 changer transitions 0/323 dead transitions. [2024-06-28 02:25:20,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 323 transitions, 4151 flow [2024-06-28 02:25:20,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:25:20,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:25:20,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 02:25:20,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-28 02:25:20,956 INFO L175 Difference]: Start difference. First operand has 342 places, 296 transitions, 3365 flow. Second operand 12 states and 134 transitions. [2024-06-28 02:25:20,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 323 transitions, 4151 flow [2024-06-28 02:25:21,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 323 transitions, 4038 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 02:25:21,491 INFO L231 Difference]: Finished difference. Result has 348 places, 300 transitions, 3462 flow [2024-06-28 02:25:21,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3252, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3462, PETRI_PLACES=348, PETRI_TRANSITIONS=300} [2024-06-28 02:25:21,492 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-28 02:25:21,492 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 300 transitions, 3462 flow [2024-06-28 02:25:21,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:21,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:21,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:21,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 02:25:21,492 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:21,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:21,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1562678787, now seen corresponding path program 13 times [2024-06-28 02:25:21,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:21,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055618069] [2024-06-28 02:25:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:21,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:22,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:22,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055618069] [2024-06-28 02:25:22,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055618069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:22,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:22,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:22,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054763269] [2024-06-28 02:25:22,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:22,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:22,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:22,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:22,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:22,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:22,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 300 transitions, 3462 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:22,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:22,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:22,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:23,279 INFO L124 PetriNetUnfolderBase]: 939/1691 cut-off events. [2024-06-28 02:25:23,279 INFO L125 PetriNetUnfolderBase]: For 103169/103169 co-relation queries the response was YES. [2024-06-28 02:25:23,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10438 conditions, 1691 events. 939/1691 cut-off events. For 103169/103169 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9603 event pairs, 170 based on Foata normal form. 2/1693 useless extension candidates. Maximal degree in co-relation 10277. Up to 1432 conditions per place. [2024-06-28 02:25:23,300 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 258 selfloop transitions, 64 changer transitions 0/324 dead transitions. [2024-06-28 02:25:23,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 324 transitions, 4216 flow [2024-06-28 02:25:23,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:23,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:25:23,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-28 02:25:23,301 INFO L175 Difference]: Start difference. First operand has 348 places, 300 transitions, 3462 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:25:23,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 324 transitions, 4216 flow [2024-06-28 02:25:23,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 324 transitions, 4050 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:23,870 INFO L231 Difference]: Finished difference. Result has 350 places, 301 transitions, 3464 flow [2024-06-28 02:25:23,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3296, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3464, PETRI_PLACES=350, PETRI_TRANSITIONS=301} [2024-06-28 02:25:23,871 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-28 02:25:23,871 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 301 transitions, 3464 flow [2024-06-28 02:25:23,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:23,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:23,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:23,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 02:25:23,872 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:23,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:23,872 INFO L85 PathProgramCache]: Analyzing trace with hash -855801481, now seen corresponding path program 4 times [2024-06-28 02:25:23,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:23,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756370816] [2024-06-28 02:25:23,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:23,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:25,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:25,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756370816] [2024-06-28 02:25:25,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756370816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:25,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:25,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:25,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899326064] [2024-06-28 02:25:25,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:25,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:25,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:25,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:25,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:25,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:25,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 301 transitions, 3464 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:25,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:25,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:25,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:26,283 INFO L124 PetriNetUnfolderBase]: 945/1701 cut-off events. [2024-06-28 02:25:26,283 INFO L125 PetriNetUnfolderBase]: For 105242/105242 co-relation queries the response was YES. [2024-06-28 02:25:26,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10521 conditions, 1701 events. 945/1701 cut-off events. For 105242/105242 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9695 event pairs, 168 based on Foata normal form. 2/1703 useless extension candidates. Maximal degree in co-relation 10359. Up to 1385 conditions per place. [2024-06-28 02:25:26,304 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 251 selfloop transitions, 76 changer transitions 0/329 dead transitions. [2024-06-28 02:25:26,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 329 transitions, 4260 flow [2024-06-28 02:25:26,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:25:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:25:26,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 02:25:26,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 02:25:26,305 INFO L175 Difference]: Start difference. First operand has 350 places, 301 transitions, 3464 flow. Second operand 12 states and 136 transitions. [2024-06-28 02:25:26,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 329 transitions, 4260 flow [2024-06-28 02:25:26,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 329 transitions, 4075 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 02:25:26,907 INFO L231 Difference]: Finished difference. Result has 352 places, 303 transitions, 3492 flow [2024-06-28 02:25:26,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3279, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3492, PETRI_PLACES=352, PETRI_TRANSITIONS=303} [2024-06-28 02:25:26,907 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-28 02:25:26,907 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 303 transitions, 3492 flow [2024-06-28 02:25:26,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:26,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:26,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:26,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 02:25:26,908 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:26,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:26,908 INFO L85 PathProgramCache]: Analyzing trace with hash -509536737, now seen corresponding path program 5 times [2024-06-28 02:25:26,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:26,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506723647] [2024-06-28 02:25:26,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:26,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:28,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:28,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506723647] [2024-06-28 02:25:28,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506723647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:28,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:28,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:28,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765836317] [2024-06-28 02:25:28,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:28,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:28,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:28,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:28,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:28,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:28,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 303 transitions, 3492 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:28,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:28,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:28,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:29,191 INFO L124 PetriNetUnfolderBase]: 957/1721 cut-off events. [2024-06-28 02:25:29,191 INFO L125 PetriNetUnfolderBase]: For 107232/107232 co-relation queries the response was YES. [2024-06-28 02:25:29,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10653 conditions, 1721 events. 957/1721 cut-off events. For 107232/107232 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9831 event pairs, 170 based on Foata normal form. 2/1723 useless extension candidates. Maximal degree in co-relation 10490. Up to 1452 conditions per place. [2024-06-28 02:25:29,209 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 263 selfloop transitions, 67 changer transitions 0/332 dead transitions. [2024-06-28 02:25:29,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 332 transitions, 4324 flow [2024-06-28 02:25:29,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:25:29,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:25:29,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 02:25:29,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-28 02:25:29,210 INFO L175 Difference]: Start difference. First operand has 352 places, 303 transitions, 3492 flow. Second operand 12 states and 134 transitions. [2024-06-28 02:25:29,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 332 transitions, 4324 flow [2024-06-28 02:25:29,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 332 transitions, 4127 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-28 02:25:29,785 INFO L231 Difference]: Finished difference. Result has 355 places, 307 transitions, 3533 flow [2024-06-28 02:25:29,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3299, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3533, PETRI_PLACES=355, PETRI_TRANSITIONS=307} [2024-06-28 02:25:29,785 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-28 02:25:29,785 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 307 transitions, 3533 flow [2024-06-28 02:25:29,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:29,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:29,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:29,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 02:25:29,786 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:29,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:29,786 INFO L85 PathProgramCache]: Analyzing trace with hash -509297417, now seen corresponding path program 1 times [2024-06-28 02:25:29,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:29,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480882871] [2024-06-28 02:25:29,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:29,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:30,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:30,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:30,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480882871] [2024-06-28 02:25:30,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480882871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:30,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:30,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:30,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981350428] [2024-06-28 02:25:30,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:30,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:30,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:30,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:30,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:31,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:31,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 307 transitions, 3533 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:31,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:31,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:31,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:31,632 INFO L124 PetriNetUnfolderBase]: 961/1730 cut-off events. [2024-06-28 02:25:31,632 INFO L125 PetriNetUnfolderBase]: For 109742/109742 co-relation queries the response was YES. [2024-06-28 02:25:31,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10689 conditions, 1730 events. 961/1730 cut-off events. For 109742/109742 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9930 event pairs, 264 based on Foata normal form. 2/1732 useless extension candidates. Maximal degree in co-relation 10524. Up to 1604 conditions per place. [2024-06-28 02:25:31,653 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 286 selfloop transitions, 41 changer transitions 0/329 dead transitions. [2024-06-28 02:25:31,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 329 transitions, 4287 flow [2024-06-28 02:25:31,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:25:31,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:25:31,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-28 02:25:31,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-28 02:25:31,654 INFO L175 Difference]: Start difference. First operand has 355 places, 307 transitions, 3533 flow. Second operand 12 states and 124 transitions. [2024-06-28 02:25:31,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 329 transitions, 4287 flow [2024-06-28 02:25:32,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 329 transitions, 4097 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:32,154 INFO L231 Difference]: Finished difference. Result has 358 places, 308 transitions, 3461 flow [2024-06-28 02:25:32,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3343, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3461, PETRI_PLACES=358, PETRI_TRANSITIONS=308} [2024-06-28 02:25:32,154 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-28 02:25:32,154 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 308 transitions, 3461 flow [2024-06-28 02:25:32,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:32,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:32,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:32,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 02:25:32,155 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:32,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:32,155 INFO L85 PathProgramCache]: Analyzing trace with hash -515972771, now seen corresponding path program 14 times [2024-06-28 02:25:32,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:32,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856406707] [2024-06-28 02:25:32,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:32,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:33,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:33,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856406707] [2024-06-28 02:25:33,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856406707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:33,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:33,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:33,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559952296] [2024-06-28 02:25:33,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:33,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:33,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:33,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:33,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:33,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:33,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 308 transitions, 3461 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:33,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:33,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:33,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:34,128 INFO L124 PetriNetUnfolderBase]: 965/1737 cut-off events. [2024-06-28 02:25:34,128 INFO L125 PetriNetUnfolderBase]: For 111932/111932 co-relation queries the response was YES. [2024-06-28 02:25:34,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10644 conditions, 1737 events. 965/1737 cut-off events. For 111932/111932 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9940 event pairs, 174 based on Foata normal form. 2/1739 useless extension candidates. Maximal degree in co-relation 10478. Up to 1478 conditions per place. [2024-06-28 02:25:34,149 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 270 selfloop transitions, 59 changer transitions 0/331 dead transitions. [2024-06-28 02:25:34,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 331 transitions, 4225 flow [2024-06-28 02:25:34,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:34,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:25:34,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-28 02:25:34,151 INFO L175 Difference]: Start difference. First operand has 358 places, 308 transitions, 3461 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:25:34,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 331 transitions, 4225 flow [2024-06-28 02:25:34,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 331 transitions, 4123 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 02:25:34,657 INFO L231 Difference]: Finished difference. Result has 359 places, 309 transitions, 3519 flow [2024-06-28 02:25:34,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3359, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3519, PETRI_PLACES=359, PETRI_TRANSITIONS=309} [2024-06-28 02:25:34,657 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-28 02:25:34,657 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 309 transitions, 3519 flow [2024-06-28 02:25:34,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:34,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:34,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:34,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 02:25:34,658 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:34,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:34,658 INFO L85 PathProgramCache]: Analyzing trace with hash -509297727, now seen corresponding path program 6 times [2024-06-28 02:25:34,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:34,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560349703] [2024-06-28 02:25:34,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:34,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:36,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:36,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:36,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560349703] [2024-06-28 02:25:36,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560349703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:36,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:36,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:36,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132526752] [2024-06-28 02:25:36,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:36,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:36,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:36,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:36,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:36,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:36,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 309 transitions, 3519 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:36,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:36,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:36,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:36,838 INFO L124 PetriNetUnfolderBase]: 981/1763 cut-off events. [2024-06-28 02:25:36,838 INFO L125 PetriNetUnfolderBase]: For 123626/123626 co-relation queries the response was YES. [2024-06-28 02:25:36,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11128 conditions, 1763 events. 981/1763 cut-off events. For 123626/123626 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 10105 event pairs, 169 based on Foata normal form. 2/1765 useless extension candidates. Maximal degree in co-relation 10961. Up to 1381 conditions per place. [2024-06-28 02:25:36,859 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 247 selfloop transitions, 94 changer transitions 0/343 dead transitions. [2024-06-28 02:25:36,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 343 transitions, 4615 flow [2024-06-28 02:25:36,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:25:36,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:25:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions. [2024-06-28 02:25:36,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3557692307692308 [2024-06-28 02:25:36,860 INFO L175 Difference]: Start difference. First operand has 359 places, 309 transitions, 3519 flow. Second operand 13 states and 148 transitions. [2024-06-28 02:25:36,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 343 transitions, 4615 flow [2024-06-28 02:25:37,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 343 transitions, 4467 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:37,417 INFO L231 Difference]: Finished difference. Result has 363 places, 313 transitions, 3689 flow [2024-06-28 02:25:37,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3371, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3689, PETRI_PLACES=363, PETRI_TRANSITIONS=313} [2024-06-28 02:25:37,432 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-28 02:25:37,432 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 313 transitions, 3689 flow [2024-06-28 02:25:37,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:37,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:37,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:37,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 02:25:37,433 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:37,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:37,433 INFO L85 PathProgramCache]: Analyzing trace with hash -515977421, now seen corresponding path program 15 times [2024-06-28 02:25:37,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:37,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593119305] [2024-06-28 02:25:37,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:37,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:38,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:38,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593119305] [2024-06-28 02:25:38,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593119305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:38,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:38,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:38,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284679680] [2024-06-28 02:25:38,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:38,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:38,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:38,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:38,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:38,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:38,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 313 transitions, 3689 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:38,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:38,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:38,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:39,347 INFO L124 PetriNetUnfolderBase]: 978/1758 cut-off events. [2024-06-28 02:25:39,347 INFO L125 PetriNetUnfolderBase]: For 116574/116574 co-relation queries the response was YES. [2024-06-28 02:25:39,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10981 conditions, 1758 events. 978/1758 cut-off events. For 116574/116574 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 10085 event pairs, 175 based on Foata normal form. 2/1760 useless extension candidates. Maximal degree in co-relation 10813. Up to 1477 conditions per place. [2024-06-28 02:25:39,367 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 273 selfloop transitions, 60 changer transitions 0/335 dead transitions. [2024-06-28 02:25:39,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 335 transitions, 4423 flow [2024-06-28 02:25:39,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:39,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:39,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:25:39,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-28 02:25:39,368 INFO L175 Difference]: Start difference. First operand has 363 places, 313 transitions, 3689 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:25:39,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 335 transitions, 4423 flow [2024-06-28 02:25:39,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 335 transitions, 4226 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:39,959 INFO L231 Difference]: Finished difference. Result has 365 places, 313 transitions, 3616 flow [2024-06-28 02:25:39,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3492, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3616, PETRI_PLACES=365, PETRI_TRANSITIONS=313} [2024-06-28 02:25:39,960 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-28 02:25:39,960 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 313 transitions, 3616 flow [2024-06-28 02:25:39,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:39,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:39,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:39,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 02:25:39,960 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:39,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:39,961 INFO L85 PathProgramCache]: Analyzing trace with hash -515792847, now seen corresponding path program 7 times [2024-06-28 02:25:39,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:39,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527926661] [2024-06-28 02:25:39,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:39,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:42,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:42,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527926661] [2024-06-28 02:25:42,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527926661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:42,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:42,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:42,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53601883] [2024-06-28 02:25:42,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:42,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:42,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:42,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:42,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:42,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:42,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 313 transitions, 3616 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:42,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:42,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:42,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:43,389 INFO L124 PetriNetUnfolderBase]: 974/1752 cut-off events. [2024-06-28 02:25:43,389 INFO L125 PetriNetUnfolderBase]: For 108294/108294 co-relation queries the response was YES. [2024-06-28 02:25:43,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10680 conditions, 1752 events. 974/1752 cut-off events. For 108294/108294 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 10035 event pairs, 172 based on Foata normal form. 2/1754 useless extension candidates. Maximal degree in co-relation 10510. Up to 1483 conditions per place. [2024-06-28 02:25:43,407 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 274 selfloop transitions, 62 changer transitions 0/338 dead transitions. [2024-06-28 02:25:43,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 338 transitions, 4383 flow [2024-06-28 02:25:43,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:25:43,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:25:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 02:25:43,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-28 02:25:43,409 INFO L175 Difference]: Start difference. First operand has 365 places, 313 transitions, 3616 flow. Second operand 12 states and 134 transitions. [2024-06-28 02:25:43,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 338 transitions, 4383 flow [2024-06-28 02:25:43,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 338 transitions, 4216 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 02:25:43,986 INFO L231 Difference]: Finished difference. Result has 368 places, 314 transitions, 3600 flow [2024-06-28 02:25:43,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3449, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3600, PETRI_PLACES=368, PETRI_TRANSITIONS=314} [2024-06-28 02:25:43,987 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-28 02:25:43,987 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 314 transitions, 3600 flow [2024-06-28 02:25:43,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:43,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:43,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:43,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 02:25:43,987 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:43,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:43,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1002348395, now seen corresponding path program 16 times [2024-06-28 02:25:43,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:43,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137003621] [2024-06-28 02:25:43,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:43,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:45,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:45,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137003621] [2024-06-28 02:25:45,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137003621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:45,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:45,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:45,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723986545] [2024-06-28 02:25:45,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:45,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:45,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:45,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:45,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:45,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:45,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 314 transitions, 3600 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:45,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:45,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:45,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:45,803 INFO L124 PetriNetUnfolderBase]: 978/1761 cut-off events. [2024-06-28 02:25:45,804 INFO L125 PetriNetUnfolderBase]: For 110865/110865 co-relation queries the response was YES. [2024-06-28 02:25:45,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10753 conditions, 1761 events. 978/1761 cut-off events. For 110865/110865 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 10133 event pairs, 187 based on Foata normal form. 2/1763 useless extension candidates. Maximal degree in co-relation 10581. Up to 1534 conditions per place. [2024-06-28 02:25:45,825 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 293 selfloop transitions, 38 changer transitions 0/333 dead transitions. [2024-06-28 02:25:45,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 333 transitions, 4344 flow [2024-06-28 02:25:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:45,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:45,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 02:25:45,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-28 02:25:45,826 INFO L175 Difference]: Start difference. First operand has 368 places, 314 transitions, 3600 flow. Second operand 10 states and 103 transitions. [2024-06-28 02:25:45,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 333 transitions, 4344 flow [2024-06-28 02:25:46,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 333 transitions, 4186 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:46,396 INFO L231 Difference]: Finished difference. Result has 369 places, 315 transitions, 3568 flow [2024-06-28 02:25:46,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3442, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3568, PETRI_PLACES=369, PETRI_TRANSITIONS=315} [2024-06-28 02:25:46,396 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-28 02:25:46,396 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 315 transitions, 3568 flow [2024-06-28 02:25:46,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:46,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:46,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:46,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 02:25:46,397 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:46,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:46,397 INFO L85 PathProgramCache]: Analyzing trace with hash -2130975339, now seen corresponding path program 17 times [2024-06-28 02:25:46,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:46,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498707559] [2024-06-28 02:25:46,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:46,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:47,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:47,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:47,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498707559] [2024-06-28 02:25:47,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498707559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:47,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:47,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:47,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076448285] [2024-06-28 02:25:47,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:47,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:47,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:47,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:47,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:47,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:47,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 315 transitions, 3568 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:47,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:47,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:47,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:48,128 INFO L124 PetriNetUnfolderBase]: 982/1769 cut-off events. [2024-06-28 02:25:48,128 INFO L125 PetriNetUnfolderBase]: For 113198/113198 co-relation queries the response was YES. [2024-06-28 02:25:48,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10789 conditions, 1769 events. 982/1769 cut-off events. For 113198/113198 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 10182 event pairs, 229 based on Foata normal form. 2/1771 useless extension candidates. Maximal degree in co-relation 10616. Up to 1588 conditions per place. [2024-06-28 02:25:48,152 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 286 selfloop transitions, 46 changer transitions 0/334 dead transitions. [2024-06-28 02:25:48,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 334 transitions, 4322 flow [2024-06-28 02:25:48,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:48,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:48,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 02:25:48,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-28 02:25:48,153 INFO L175 Difference]: Start difference. First operand has 369 places, 315 transitions, 3568 flow. Second operand 10 states and 107 transitions. [2024-06-28 02:25:48,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 334 transitions, 4322 flow [2024-06-28 02:25:48,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 334 transitions, 4206 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:48,732 INFO L231 Difference]: Finished difference. Result has 371 places, 316 transitions, 3594 flow [2024-06-28 02:25:48,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3458, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3594, PETRI_PLACES=371, PETRI_TRANSITIONS=316} [2024-06-28 02:25:48,733 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2024-06-28 02:25:48,733 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 316 transitions, 3594 flow [2024-06-28 02:25:48,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:48,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:48,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:48,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 02:25:48,734 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:48,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:48,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1374060129, now seen corresponding path program 18 times [2024-06-28 02:25:48,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:48,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082933144] [2024-06-28 02:25:48,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:48,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:49,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:49,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:49,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082933144] [2024-06-28 02:25:49,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082933144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:49,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:49,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:49,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905581671] [2024-06-28 02:25:49,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:49,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:49,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:49,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:49,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:49,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:49,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 316 transitions, 3594 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:49,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:49,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:49,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:50,447 INFO L124 PetriNetUnfolderBase]: 986/1777 cut-off events. [2024-06-28 02:25:50,447 INFO L125 PetriNetUnfolderBase]: For 108818/108818 co-relation queries the response was YES. [2024-06-28 02:25:50,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10788 conditions, 1777 events. 986/1777 cut-off events. For 108818/108818 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 10261 event pairs, 222 based on Foata normal form. 2/1779 useless extension candidates. Maximal degree in co-relation 10614. Up to 1552 conditions per place. [2024-06-28 02:25:50,470 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 285 selfloop transitions, 48 changer transitions 0/335 dead transitions. [2024-06-28 02:25:50,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 335 transitions, 4344 flow [2024-06-28 02:25:50,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:50,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:50,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 02:25:50,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-28 02:25:50,472 INFO L175 Difference]: Start difference. First operand has 371 places, 316 transitions, 3594 flow. Second operand 10 states and 108 transitions. [2024-06-28 02:25:50,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 335 transitions, 4344 flow [2024-06-28 02:25:51,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 335 transitions, 4218 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:51,063 INFO L231 Difference]: Finished difference. Result has 373 places, 317 transitions, 3610 flow [2024-06-28 02:25:51,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3472, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3610, PETRI_PLACES=373, PETRI_TRANSITIONS=317} [2024-06-28 02:25:51,064 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-28 02:25:51,064 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 317 transitions, 3610 flow [2024-06-28 02:25:51,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:51,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:51,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:51,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 02:25:51,064 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:51,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:51,065 INFO L85 PathProgramCache]: Analyzing trace with hash 445528281, now seen corresponding path program 19 times [2024-06-28 02:25:51,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:51,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106943993] [2024-06-28 02:25:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:51,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:52,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:52,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106943993] [2024-06-28 02:25:52,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106943993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:52,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:52,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:52,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899028005] [2024-06-28 02:25:52,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:52,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:52,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:52,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:52,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:52,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:52,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 317 transitions, 3610 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:52,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:52,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:52,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:52,613 INFO L124 PetriNetUnfolderBase]: 990/1785 cut-off events. [2024-06-28 02:25:52,613 INFO L125 PetriNetUnfolderBase]: For 106794/106794 co-relation queries the response was YES. [2024-06-28 02:25:52,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10807 conditions, 1785 events. 990/1785 cut-off events. For 106794/106794 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10294 event pairs, 211 based on Foata normal form. 2/1787 useless extension candidates. Maximal degree in co-relation 10632. Up to 1492 conditions per place. [2024-06-28 02:25:52,638 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 283 selfloop transitions, 51 changer transitions 0/336 dead transitions. [2024-06-28 02:25:52,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 336 transitions, 4358 flow [2024-06-28 02:25:52,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:52,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:52,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 02:25:52,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-28 02:25:52,639 INFO L175 Difference]: Start difference. First operand has 373 places, 317 transitions, 3610 flow. Second operand 10 states and 109 transitions. [2024-06-28 02:25:52,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 336 transitions, 4358 flow [2024-06-28 02:25:53,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 336 transitions, 4230 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:53,230 INFO L231 Difference]: Finished difference. Result has 375 places, 318 transitions, 3628 flow [2024-06-28 02:25:53,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3486, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3628, PETRI_PLACES=375, PETRI_TRANSITIONS=318} [2024-06-28 02:25:53,231 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-28 02:25:53,231 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 318 transitions, 3628 flow [2024-06-28 02:25:53,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:53,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:53,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:53,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 02:25:53,231 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:53,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:53,232 INFO L85 PathProgramCache]: Analyzing trace with hash 561119345, now seen corresponding path program 8 times [2024-06-28 02:25:53,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:53,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254229774] [2024-06-28 02:25:53,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:53,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:54,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:54,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:54,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254229774] [2024-06-28 02:25:54,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254229774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:54,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:54,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:54,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514830947] [2024-06-28 02:25:54,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:54,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:54,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:54,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:54,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:54,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:54,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 318 transitions, 3628 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:54,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:54,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:54,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:55,322 INFO L124 PetriNetUnfolderBase]: 1002/1805 cut-off events. [2024-06-28 02:25:55,323 INFO L125 PetriNetUnfolderBase]: For 104566/104566 co-relation queries the response was YES. [2024-06-28 02:25:55,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10902 conditions, 1805 events. 1002/1805 cut-off events. For 104566/104566 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 10466 event pairs, 233 based on Foata normal form. 2/1807 useless extension candidates. Maximal degree in co-relation 10726. Up to 1594 conditions per place. [2024-06-28 02:25:55,347 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 285 selfloop transitions, 55 changer transitions 0/342 dead transitions. [2024-06-28 02:25:55,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 342 transitions, 4448 flow [2024-06-28 02:25:55,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:55,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:55,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 02:25:55,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-28 02:25:55,349 INFO L175 Difference]: Start difference. First operand has 375 places, 318 transitions, 3628 flow. Second operand 11 states and 117 transitions. [2024-06-28 02:25:55,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 342 transitions, 4448 flow [2024-06-28 02:25:56,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 342 transitions, 4320 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:56,023 INFO L231 Difference]: Finished difference. Result has 379 places, 322 transitions, 3720 flow [2024-06-28 02:25:56,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3500, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3720, PETRI_PLACES=379, PETRI_TRANSITIONS=322} [2024-06-28 02:25:56,023 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 348 predicate places. [2024-06-28 02:25:56,023 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 322 transitions, 3720 flow [2024-06-28 02:25:56,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:56,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:56,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:56,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 02:25:56,024 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:56,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:56,024 INFO L85 PathProgramCache]: Analyzing trace with hash 309122377, now seen corresponding path program 20 times [2024-06-28 02:25:56,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:56,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955047583] [2024-06-28 02:25:56,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:56,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:57,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:57,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955047583] [2024-06-28 02:25:57,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955047583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:57,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:57,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:25:57,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228529270] [2024-06-28 02:25:57,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:57,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:25:57,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:57,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:25:57,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:25:57,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:25:57,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 322 transitions, 3720 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:57,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:57,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:25:57,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:57,962 INFO L124 PetriNetUnfolderBase]: 1006/1812 cut-off events. [2024-06-28 02:25:57,962 INFO L125 PetriNetUnfolderBase]: For 102527/102527 co-relation queries the response was YES. [2024-06-28 02:25:57,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10958 conditions, 1812 events. 1006/1812 cut-off events. For 102527/102527 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10531 event pairs, 161 based on Foata normal form. 2/1814 useless extension candidates. Maximal degree in co-relation 10780. Up to 1420 conditions per place. [2024-06-28 02:25:57,980 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 247 selfloop transitions, 94 changer transitions 0/343 dead transitions. [2024-06-28 02:25:57,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 343 transitions, 4496 flow [2024-06-28 02:25:57,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:57,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:57,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 02:25:57,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 02:25:57,982 INFO L175 Difference]: Start difference. First operand has 379 places, 322 transitions, 3720 flow. Second operand 10 states and 112 transitions. [2024-06-28 02:25:57,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 343 transitions, 4496 flow [2024-06-28 02:25:58,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 343 transitions, 4331 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-06-28 02:25:58,550 INFO L231 Difference]: Finished difference. Result has 378 places, 323 transitions, 3779 flow [2024-06-28 02:25:58,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3555, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3779, PETRI_PLACES=378, PETRI_TRANSITIONS=323} [2024-06-28 02:25:58,551 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 347 predicate places. [2024-06-28 02:25:58,551 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 323 transitions, 3779 flow [2024-06-28 02:25:58,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:58,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:58,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:58,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 02:25:58,551 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:58,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:58,552 INFO L85 PathProgramCache]: Analyzing trace with hash -24282349, now seen corresponding path program 9 times [2024-06-28 02:25:58,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:58,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768854246] [2024-06-28 02:25:58,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:58,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:00,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:00,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768854246] [2024-06-28 02:26:00,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768854246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:00,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:00,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:00,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443474219] [2024-06-28 02:26:00,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:00,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:00,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:00,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:00,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:00,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:00,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 323 transitions, 3779 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:00,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:00,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:00,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:00,885 INFO L124 PetriNetUnfolderBase]: 1018/1832 cut-off events. [2024-06-28 02:26:00,885 INFO L125 PetriNetUnfolderBase]: For 102628/102628 co-relation queries the response was YES. [2024-06-28 02:26:00,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11152 conditions, 1832 events. 1018/1832 cut-off events. For 102628/102628 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10654 event pairs, 159 based on Foata normal form. 2/1834 useless extension candidates. Maximal degree in co-relation 10976. Up to 1420 conditions per place. [2024-06-28 02:26:00,910 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 247 selfloop transitions, 100 changer transitions 0/349 dead transitions. [2024-06-28 02:26:00,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 349 transitions, 4633 flow [2024-06-28 02:26:00,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:00,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:00,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:26:00,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 02:26:00,911 INFO L175 Difference]: Start difference. First operand has 378 places, 323 transitions, 3779 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:26:00,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 349 transitions, 4633 flow [2024-06-28 02:26:01,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 349 transitions, 4362 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-28 02:26:01,667 INFO L231 Difference]: Finished difference. Result has 379 places, 327 transitions, 3816 flow [2024-06-28 02:26:01,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3508, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3816, PETRI_PLACES=379, PETRI_TRANSITIONS=327} [2024-06-28 02:26:01,667 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 348 predicate places. [2024-06-28 02:26:01,668 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 327 transitions, 3816 flow [2024-06-28 02:26:01,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:01,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:01,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:01,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 02:26:01,668 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:01,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:01,668 INFO L85 PathProgramCache]: Analyzing trace with hash -147162125, now seen corresponding path program 21 times [2024-06-28 02:26:01,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:01,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537874378] [2024-06-28 02:26:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:01,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:02,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:02,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:02,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537874378] [2024-06-28 02:26:02,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537874378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:02,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:02,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:02,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653954868] [2024-06-28 02:26:02,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:02,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:02,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:02,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:02,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:03,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:03,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 327 transitions, 3816 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:03,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:03,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:03,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:03,664 INFO L124 PetriNetUnfolderBase]: 1022/1840 cut-off events. [2024-06-28 02:26:03,665 INFO L125 PetriNetUnfolderBase]: For 103082/103082 co-relation queries the response was YES. [2024-06-28 02:26:03,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11149 conditions, 1840 events. 1022/1840 cut-off events. For 103082/103082 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10732 event pairs, 165 based on Foata normal form. 2/1842 useless extension candidates. Maximal degree in co-relation 10973. Up to 1448 conditions per place. [2024-06-28 02:26:03,687 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 259 selfloop transitions, 86 changer transitions 0/347 dead transitions. [2024-06-28 02:26:03,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 347 transitions, 4596 flow [2024-06-28 02:26:03,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:03,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:03,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 02:26:03,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 02:26:03,689 INFO L175 Difference]: Start difference. First operand has 379 places, 327 transitions, 3816 flow. Second operand 10 states and 112 transitions. [2024-06-28 02:26:03,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 347 transitions, 4596 flow [2024-06-28 02:26:04,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 347 transitions, 4346 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:04,343 INFO L231 Difference]: Finished difference. Result has 381 places, 328 transitions, 3776 flow [2024-06-28 02:26:04,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3566, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3776, PETRI_PLACES=381, PETRI_TRANSITIONS=328} [2024-06-28 02:26:04,344 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-28 02:26:04,344 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 328 transitions, 3776 flow [2024-06-28 02:26:04,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:04,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:04,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:04,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 02:26:04,344 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:04,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:04,345 INFO L85 PathProgramCache]: Analyzing trace with hash -140495451, now seen corresponding path program 10 times [2024-06-28 02:26:04,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:04,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133514447] [2024-06-28 02:26:04,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:04,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:05,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:05,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133514447] [2024-06-28 02:26:05,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133514447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:05,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:05,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:05,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310408862] [2024-06-28 02:26:05,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:05,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:05,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:05,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:05,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:05,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:05,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 328 transitions, 3776 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:05,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:05,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:05,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:06,621 INFO L124 PetriNetUnfolderBase]: 1028/1850 cut-off events. [2024-06-28 02:26:06,621 INFO L125 PetriNetUnfolderBase]: For 103101/103101 co-relation queries the response was YES. [2024-06-28 02:26:06,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11147 conditions, 1850 events. 1028/1850 cut-off events. For 103101/103101 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10818 event pairs, 155 based on Foata normal form. 2/1852 useless extension candidates. Maximal degree in co-relation 10970. Up to 1348 conditions per place. [2024-06-28 02:26:06,645 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 231 selfloop transitions, 120 changer transitions 0/353 dead transitions. [2024-06-28 02:26:06,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 353 transitions, 4622 flow [2024-06-28 02:26:06,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:06,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:06,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:26:06,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-28 02:26:06,647 INFO L175 Difference]: Start difference. First operand has 381 places, 328 transitions, 3776 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:26:06,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 353 transitions, 4622 flow [2024-06-28 02:26:07,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 353 transitions, 4417 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 02:26:07,296 INFO L231 Difference]: Finished difference. Result has 382 places, 330 transitions, 3887 flow [2024-06-28 02:26:07,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3571, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3887, PETRI_PLACES=382, PETRI_TRANSITIONS=330} [2024-06-28 02:26:07,297 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2024-06-28 02:26:07,297 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 330 transitions, 3887 flow [2024-06-28 02:26:07,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:07,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:07,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:07,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 02:26:07,298 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:07,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:07,298 INFO L85 PathProgramCache]: Analyzing trace with hash 309368641, now seen corresponding path program 2 times [2024-06-28 02:26:07,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:07,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953022894] [2024-06-28 02:26:07,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:07,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:08,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:08,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953022894] [2024-06-28 02:26:08,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953022894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:08,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:08,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:08,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771710782] [2024-06-28 02:26:08,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:08,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:08,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:08,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:08,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:08,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:08,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 330 transitions, 3887 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:08,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:08,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:08,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:09,545 INFO L124 PetriNetUnfolderBase]: 1025/1846 cut-off events. [2024-06-28 02:26:09,545 INFO L125 PetriNetUnfolderBase]: For 93884/93884 co-relation queries the response was YES. [2024-06-28 02:26:09,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10988 conditions, 1846 events. 1025/1846 cut-off events. For 93884/93884 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10807 event pairs, 270 based on Foata normal form. 2/1848 useless extension candidates. Maximal degree in co-relation 10812. Up to 1645 conditions per place. [2024-06-28 02:26:09,567 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 286 selfloop transitions, 61 changer transitions 0/349 dead transitions. [2024-06-28 02:26:09,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 349 transitions, 4647 flow [2024-06-28 02:26:09,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:09,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:09,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 02:26:09,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-28 02:26:09,569 INFO L175 Difference]: Start difference. First operand has 382 places, 330 transitions, 3887 flow. Second operand 11 states and 114 transitions. [2024-06-28 02:26:09,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 349 transitions, 4647 flow [2024-06-28 02:26:10,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 349 transitions, 4359 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 02:26:10,103 INFO L231 Difference]: Finished difference. Result has 384 places, 330 transitions, 3731 flow [2024-06-28 02:26:10,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3599, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3731, PETRI_PLACES=384, PETRI_TRANSITIONS=330} [2024-06-28 02:26:10,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-28 02:26:10,104 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 330 transitions, 3731 flow [2024-06-28 02:26:10,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:10,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:10,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:10,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 02:26:10,104 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:10,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:10,105 INFO L85 PathProgramCache]: Analyzing trace with hash 302688637, now seen corresponding path program 22 times [2024-06-28 02:26:10,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:10,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083914100] [2024-06-28 02:26:10,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:10,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:11,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:11,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:11,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083914100] [2024-06-28 02:26:11,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083914100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:11,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:11,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:11,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568676753] [2024-06-28 02:26:11,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:11,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:11,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:11,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:11,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:11,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:11,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 330 transitions, 3731 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:11,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:11,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:11,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:12,069 INFO L124 PetriNetUnfolderBase]: 1029/1853 cut-off events. [2024-06-28 02:26:12,069 INFO L125 PetriNetUnfolderBase]: For 93607/93607 co-relation queries the response was YES. [2024-06-28 02:26:12,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10822 conditions, 1853 events. 1029/1853 cut-off events. For 93607/93607 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10853 event pairs, 164 based on Foata normal form. 2/1855 useless extension candidates. Maximal degree in co-relation 10645. Up to 1417 conditions per place. [2024-06-28 02:26:12,092 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 260 selfloop transitions, 88 changer transitions 0/350 dead transitions. [2024-06-28 02:26:12,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 350 transitions, 4517 flow [2024-06-28 02:26:12,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:12,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 02:26:12,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 02:26:12,094 INFO L175 Difference]: Start difference. First operand has 384 places, 330 transitions, 3731 flow. Second operand 10 states and 112 transitions. [2024-06-28 02:26:12,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 350 transitions, 4517 flow [2024-06-28 02:26:12,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 350 transitions, 4356 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-28 02:26:12,644 INFO L231 Difference]: Finished difference. Result has 383 places, 331 transitions, 3786 flow [2024-06-28 02:26:12,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3570, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3786, PETRI_PLACES=383, PETRI_TRANSITIONS=331} [2024-06-28 02:26:12,645 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-28 02:26:12,645 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 331 transitions, 3786 flow [2024-06-28 02:26:12,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:12,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:12,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:12,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 02:26:12,646 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:12,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:12,646 INFO L85 PathProgramCache]: Analyzing trace with hash -24043339, now seen corresponding path program 11 times [2024-06-28 02:26:12,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:12,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170567301] [2024-06-28 02:26:12,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:12,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:14,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:14,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170567301] [2024-06-28 02:26:14,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170567301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:14,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:14,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:14,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076440157] [2024-06-28 02:26:14,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:14,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:14,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:14,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:14,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:14,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:14,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 331 transitions, 3786 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:14,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:14,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:14,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:14,893 INFO L124 PetriNetUnfolderBase]: 1045/1879 cut-off events. [2024-06-28 02:26:14,893 INFO L125 PetriNetUnfolderBase]: For 101430/101430 co-relation queries the response was YES. [2024-06-28 02:26:14,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11276 conditions, 1879 events. 1045/1879 cut-off events. For 101430/101430 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10976 event pairs, 154 based on Foata normal form. 2/1881 useless extension candidates. Maximal degree in co-relation 11100. Up to 1272 conditions per place. [2024-06-28 02:26:14,919 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 214 selfloop transitions, 144 changer transitions 0/360 dead transitions. [2024-06-28 02:26:14,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 360 transitions, 4904 flow [2024-06-28 02:26:14,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:14,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 02:26:14,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-28 02:26:14,920 INFO L175 Difference]: Start difference. First operand has 383 places, 331 transitions, 3786 flow. Second operand 11 states and 127 transitions. [2024-06-28 02:26:14,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 360 transitions, 4904 flow [2024-06-28 02:26:15,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 360 transitions, 4651 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-28 02:26:15,504 INFO L231 Difference]: Finished difference. Result has 384 places, 335 transitions, 3969 flow [2024-06-28 02:26:15,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3539, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3969, PETRI_PLACES=384, PETRI_TRANSITIONS=335} [2024-06-28 02:26:15,505 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-28 02:26:15,505 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 335 transitions, 3969 flow [2024-06-28 02:26:15,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:15,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:15,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:15,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 02:26:15,505 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:15,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:15,506 INFO L85 PathProgramCache]: Analyzing trace with hash 302873211, now seen corresponding path program 12 times [2024-06-28 02:26:15,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:15,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869059345] [2024-06-28 02:26:15,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:15,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:16,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:16,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:16,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869059345] [2024-06-28 02:26:16,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869059345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:16,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:16,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:16,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138507728] [2024-06-28 02:26:16,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:16,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:16,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:16,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:16,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:16,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:16,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 335 transitions, 3969 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:16,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:16,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:16,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:17,766 INFO L124 PetriNetUnfolderBase]: 1057/1899 cut-off events. [2024-06-28 02:26:17,767 INFO L125 PetriNetUnfolderBase]: For 98015/98015 co-relation queries the response was YES. [2024-06-28 02:26:17,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11456 conditions, 1899 events. 1057/1899 cut-off events. For 98015/98015 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11122 event pairs, 162 based on Foata normal form. 2/1901 useless extension candidates. Maximal degree in co-relation 11281. Up to 1487 conditions per place. [2024-06-28 02:26:17,786 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 266 selfloop transitions, 92 changer transitions 0/360 dead transitions. [2024-06-28 02:26:17,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 360 transitions, 4851 flow [2024-06-28 02:26:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:17,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:17,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:26:17,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 02:26:17,787 INFO L175 Difference]: Start difference. First operand has 384 places, 335 transitions, 3969 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:26:17,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 360 transitions, 4851 flow [2024-06-28 02:26:18,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 360 transitions, 4606 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:18,294 INFO L231 Difference]: Finished difference. Result has 388 places, 339 transitions, 4028 flow [2024-06-28 02:26:18,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3734, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4028, PETRI_PLACES=388, PETRI_TRANSITIONS=339} [2024-06-28 02:26:18,294 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2024-06-28 02:26:18,295 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 339 transitions, 4028 flow [2024-06-28 02:26:18,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:18,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:18,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:18,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 02:26:18,295 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:18,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:18,295 INFO L85 PathProgramCache]: Analyzing trace with hash -317864555, now seen corresponding path program 23 times [2024-06-28 02:26:18,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:18,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678842611] [2024-06-28 02:26:18,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:18,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:19,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:19,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678842611] [2024-06-28 02:26:19,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678842611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:19,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:19,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:19,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741235326] [2024-06-28 02:26:19,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:19,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:19,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:19,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:19,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:19,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:19,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 339 transitions, 4028 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:19,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:19,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:19,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:20,615 INFO L124 PetriNetUnfolderBase]: 1061/1907 cut-off events. [2024-06-28 02:26:20,616 INFO L125 PetriNetUnfolderBase]: For 97589/97589 co-relation queries the response was YES. [2024-06-28 02:26:20,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11534 conditions, 1907 events. 1061/1907 cut-off events. For 97589/97589 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 11187 event pairs, 172 based on Foata normal form. 2/1909 useless extension candidates. Maximal degree in co-relation 11357. Up to 1515 conditions per place. [2024-06-28 02:26:20,641 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 272 selfloop transitions, 84 changer transitions 0/358 dead transitions. [2024-06-28 02:26:20,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 358 transitions, 4826 flow [2024-06-28 02:26:20,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:20,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:20,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 02:26:20,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 02:26:20,642 INFO L175 Difference]: Start difference. First operand has 388 places, 339 transitions, 4028 flow. Second operand 10 states and 112 transitions. [2024-06-28 02:26:20,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 358 transitions, 4826 flow [2024-06-28 02:26:21,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 358 transitions, 4593 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 02:26:21,329 INFO L231 Difference]: Finished difference. Result has 389 places, 340 transitions, 4003 flow [2024-06-28 02:26:21,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3795, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4003, PETRI_PLACES=389, PETRI_TRANSITIONS=340} [2024-06-28 02:26:21,330 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-28 02:26:21,330 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 340 transitions, 4003 flow [2024-06-28 02:26:21,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:21,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:21,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:21,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 02:26:21,330 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:21,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:21,331 INFO L85 PathProgramCache]: Analyzing trace with hash 131986207, now seen corresponding path program 24 times [2024-06-28 02:26:21,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:21,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331157727] [2024-06-28 02:26:21,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:21,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:22,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:22,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331157727] [2024-06-28 02:26:22,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331157727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:22,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:22,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:22,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936478850] [2024-06-28 02:26:22,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:22,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:22,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:22,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:22,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:22,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:22,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 340 transitions, 4003 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:22,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:22,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:22,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:23,152 INFO L124 PetriNetUnfolderBase]: 1065/1915 cut-off events. [2024-06-28 02:26:23,152 INFO L125 PetriNetUnfolderBase]: For 97626/97626 co-relation queries the response was YES. [2024-06-28 02:26:23,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11528 conditions, 1915 events. 1065/1915 cut-off events. For 97626/97626 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 11245 event pairs, 170 based on Foata normal form. 2/1917 useless extension candidates. Maximal degree in co-relation 11351. Up to 1491 conditions per place. [2024-06-28 02:26:23,178 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 273 selfloop transitions, 84 changer transitions 0/359 dead transitions. [2024-06-28 02:26:23,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 359 transitions, 4803 flow [2024-06-28 02:26:23,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:23,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:23,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 02:26:23,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-28 02:26:23,179 INFO L175 Difference]: Start difference. First operand has 389 places, 340 transitions, 4003 flow. Second operand 10 states and 113 transitions. [2024-06-28 02:26:23,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 359 transitions, 4803 flow [2024-06-28 02:26:23,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 359 transitions, 4607 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:23,688 INFO L231 Difference]: Finished difference. Result has 391 places, 341 transitions, 4017 flow [2024-06-28 02:26:23,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3809, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4017, PETRI_PLACES=391, PETRI_TRANSITIONS=341} [2024-06-28 02:26:23,688 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 360 predicate places. [2024-06-28 02:26:23,688 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 341 transitions, 4017 flow [2024-06-28 02:26:23,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:23,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:23,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:23,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 02:26:23,689 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:23,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:23,689 INFO L85 PathProgramCache]: Analyzing trace with hash 131870887, now seen corresponding path program 25 times [2024-06-28 02:26:23,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:23,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395500104] [2024-06-28 02:26:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:23,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:24,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:24,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395500104] [2024-06-28 02:26:24,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395500104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:24,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:24,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:24,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848135608] [2024-06-28 02:26:24,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:24,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:24,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:24,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:24,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:24,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:24,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 341 transitions, 4017 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:24,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:24,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:24,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:25,417 INFO L124 PetriNetUnfolderBase]: 1069/1923 cut-off events. [2024-06-28 02:26:25,418 INFO L125 PetriNetUnfolderBase]: For 97779/97779 co-relation queries the response was YES. [2024-06-28 02:26:25,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11565 conditions, 1923 events. 1069/1923 cut-off events. For 97779/97779 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 11328 event pairs, 178 based on Foata normal form. 2/1925 useless extension candidates. Maximal degree in co-relation 11387. Up to 1395 conditions per place. [2024-06-28 02:26:25,443 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 268 selfloop transitions, 90 changer transitions 0/360 dead transitions. [2024-06-28 02:26:25,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 360 transitions, 4817 flow [2024-06-28 02:26:25,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:25,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 02:26:25,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 02:26:25,444 INFO L175 Difference]: Start difference. First operand has 391 places, 341 transitions, 4017 flow. Second operand 10 states and 112 transitions. [2024-06-28 02:26:25,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 360 transitions, 4817 flow [2024-06-28 02:26:25,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 360 transitions, 4617 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 02:26:25,961 INFO L231 Difference]: Finished difference. Result has 392 places, 342 transitions, 4039 flow [2024-06-28 02:26:25,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3819, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4039, PETRI_PLACES=392, PETRI_TRANSITIONS=342} [2024-06-28 02:26:25,962 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-28 02:26:25,962 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 342 transitions, 4039 flow [2024-06-28 02:26:25,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:25,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:25,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:25,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 02:26:25,963 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:25,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:25,963 INFO L85 PathProgramCache]: Analyzing trace with hash 136639431, now seen corresponding path program 13 times [2024-06-28 02:26:25,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:25,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733368565] [2024-06-28 02:26:25,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:25,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:27,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:27,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733368565] [2024-06-28 02:26:27,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733368565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:27,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:27,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:27,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568172735] [2024-06-28 02:26:27,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:27,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:27,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:27,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:27,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:27,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:27,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 342 transitions, 4039 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:27,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:27,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:27,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:28,467 INFO L124 PetriNetUnfolderBase]: 1065/1917 cut-off events. [2024-06-28 02:26:28,467 INFO L125 PetriNetUnfolderBase]: For 89098/89098 co-relation queries the response was YES. [2024-06-28 02:26:28,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11304 conditions, 1917 events. 1065/1917 cut-off events. For 89098/89098 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 11295 event pairs, 174 based on Foata normal form. 2/1919 useless extension candidates. Maximal degree in co-relation 11126. Up to 1505 conditions per place. [2024-06-28 02:26:28,493 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 270 selfloop transitions, 90 changer transitions 0/362 dead transitions. [2024-06-28 02:26:28,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 362 transitions, 4821 flow [2024-06-28 02:26:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:28,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:28,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:26:28,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 02:26:28,501 INFO L175 Difference]: Start difference. First operand has 392 places, 342 transitions, 4039 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:26:28,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 362 transitions, 4821 flow [2024-06-28 02:26:29,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 362 transitions, 4585 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-28 02:26:29,068 INFO L231 Difference]: Finished difference. Result has 393 places, 342 transitions, 3991 flow [2024-06-28 02:26:29,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3803, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3991, PETRI_PLACES=393, PETRI_TRANSITIONS=342} [2024-06-28 02:26:29,069 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-28 02:26:29,069 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 342 transitions, 3991 flow [2024-06-28 02:26:29,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:29,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:29,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:29,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 02:26:29,069 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:29,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:29,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1885115717, now seen corresponding path program 14 times [2024-06-28 02:26:29,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:29,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793035623] [2024-06-28 02:26:29,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:29,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:30,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:30,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793035623] [2024-06-28 02:26:30,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793035623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:30,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:30,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:30,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954036363] [2024-06-28 02:26:30,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:30,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:30,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:30,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:30,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:30,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:30,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 342 transitions, 3991 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:30,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:30,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:30,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:31,189 INFO L124 PetriNetUnfolderBase]: 1081/1944 cut-off events. [2024-06-28 02:26:31,189 INFO L125 PetriNetUnfolderBase]: For 97786/97786 co-relation queries the response was YES. [2024-06-28 02:26:31,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11661 conditions, 1944 events. 1081/1944 cut-off events. For 97786/97786 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 11441 event pairs, 136 based on Foata normal form. 2/1946 useless extension candidates. Maximal degree in co-relation 11484. Up to 1389 conditions per place. [2024-06-28 02:26:31,214 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 263 selfloop transitions, 108 changer transitions 0/373 dead transitions. [2024-06-28 02:26:31,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 373 transitions, 5141 flow [2024-06-28 02:26:31,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:26:31,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:26:31,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 02:26:31,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-28 02:26:31,215 INFO L175 Difference]: Start difference. First operand has 393 places, 342 transitions, 3991 flow. Second operand 12 states and 141 transitions. [2024-06-28 02:26:31,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 373 transitions, 5141 flow [2024-06-28 02:26:31,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 373 transitions, 4820 flow, removed 18 selfloop flow, removed 14 redundant places. [2024-06-28 02:26:31,781 INFO L231 Difference]: Finished difference. Result has 391 places, 346 transitions, 4023 flow [2024-06-28 02:26:31,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3670, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4023, PETRI_PLACES=391, PETRI_TRANSITIONS=346} [2024-06-28 02:26:31,782 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 360 predicate places. [2024-06-28 02:26:31,782 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 346 transitions, 4023 flow [2024-06-28 02:26:31,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:31,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:31,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:31,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 02:26:31,782 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:31,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:31,783 INFO L85 PathProgramCache]: Analyzing trace with hash 512727119, now seen corresponding path program 15 times [2024-06-28 02:26:31,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:31,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173387439] [2024-06-28 02:26:31,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:31,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:33,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:33,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:33,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173387439] [2024-06-28 02:26:33,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173387439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:33,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:33,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:33,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210386094] [2024-06-28 02:26:33,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:33,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:33,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:33,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:33,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:33,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:33,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 346 transitions, 4023 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:33,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:33,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:33,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:34,604 INFO L124 PetriNetUnfolderBase]: 1087/1954 cut-off events. [2024-06-28 02:26:34,604 INFO L125 PetriNetUnfolderBase]: For 100028/100028 co-relation queries the response was YES. [2024-06-28 02:26:34,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11669 conditions, 1954 events. 1087/1954 cut-off events. For 100028/100028 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 11525 event pairs, 136 based on Foata normal form. 2/1956 useless extension candidates. Maximal degree in co-relation 11495. Up to 1420 conditions per place. [2024-06-28 02:26:34,630 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 265 selfloop transitions, 104 changer transitions 0/371 dead transitions. [2024-06-28 02:26:34,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 371 transitions, 4913 flow [2024-06-28 02:26:34,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:34,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:34,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 02:26:34,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-28 02:26:34,631 INFO L175 Difference]: Start difference. First operand has 391 places, 346 transitions, 4023 flow. Second operand 11 states and 129 transitions. [2024-06-28 02:26:34,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 371 transitions, 4913 flow [2024-06-28 02:26:35,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 371 transitions, 4702 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:35,208 INFO L231 Difference]: Finished difference. Result has 394 places, 348 transitions, 4097 flow [2024-06-28 02:26:35,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3822, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4097, PETRI_PLACES=394, PETRI_TRANSITIONS=348} [2024-06-28 02:26:35,208 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-28 02:26:35,208 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 348 transitions, 4097 flow [2024-06-28 02:26:35,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:35,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:35,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:35,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 02:26:35,209 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:35,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:35,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1447565957, now seen corresponding path program 16 times [2024-06-28 02:26:35,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:35,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338237896] [2024-06-28 02:26:35,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:35,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:36,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:36,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:36,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338237896] [2024-06-28 02:26:36,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338237896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:36,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:36,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:36,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630992395] [2024-06-28 02:26:36,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:36,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:36,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:36,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:36,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:36,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:36,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 348 transitions, 4097 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:36,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:36,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:36,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:37,425 INFO L124 PetriNetUnfolderBase]: 1093/1964 cut-off events. [2024-06-28 02:26:37,425 INFO L125 PetriNetUnfolderBase]: For 101771/101771 co-relation queries the response was YES. [2024-06-28 02:26:37,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11893 conditions, 1964 events. 1093/1964 cut-off events. For 101771/101771 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 11578 event pairs, 125 based on Foata normal form. 2/1966 useless extension candidates. Maximal degree in co-relation 11717. Up to 1064 conditions per place. [2024-06-28 02:26:37,445 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 162 selfloop transitions, 211 changer transitions 0/375 dead transitions. [2024-06-28 02:26:37,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 375 transitions, 5189 flow [2024-06-28 02:26:37,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 02:26:37,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-28 02:26:37,446 INFO L175 Difference]: Start difference. First operand has 394 places, 348 transitions, 4097 flow. Second operand 11 states and 133 transitions. [2024-06-28 02:26:37,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 375 transitions, 5189 flow [2024-06-28 02:26:37,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 375 transitions, 4938 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 02:26:37,948 INFO L231 Difference]: Finished difference. Result has 396 places, 350 transitions, 4353 flow [2024-06-28 02:26:37,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3846, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4353, PETRI_PLACES=396, PETRI_TRANSITIONS=350} [2024-06-28 02:26:37,948 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-28 02:26:37,949 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 350 transitions, 4353 flow [2024-06-28 02:26:37,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:37,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:37,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:37,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 02:26:37,949 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:37,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:37,949 INFO L85 PathProgramCache]: Analyzing trace with hash -772525077, now seen corresponding path program 26 times [2024-06-28 02:26:37,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:37,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648871729] [2024-06-28 02:26:37,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:37,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:39,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:39,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:39,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648871729] [2024-06-28 02:26:39,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648871729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:39,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:39,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:39,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613190068] [2024-06-28 02:26:39,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:39,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:39,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:39,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:39,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:39,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:39,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 350 transitions, 4353 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:39,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:39,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:39,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:39,824 INFO L124 PetriNetUnfolderBase]: 1097/1972 cut-off events. [2024-06-28 02:26:39,825 INFO L125 PetriNetUnfolderBase]: For 104041/104041 co-relation queries the response was YES. [2024-06-28 02:26:39,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12296 conditions, 1972 events. 1097/1972 cut-off events. For 104041/104041 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11641 event pairs, 140 based on Foata normal form. 2/1974 useless extension candidates. Maximal degree in co-relation 12119. Up to 1466 conditions per place. [2024-06-28 02:26:39,849 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 271 selfloop transitions, 98 changer transitions 0/371 dead transitions. [2024-06-28 02:26:39,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 371 transitions, 5195 flow [2024-06-28 02:26:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:39,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 02:26:39,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-28 02:26:39,851 INFO L175 Difference]: Start difference. First operand has 396 places, 350 transitions, 4353 flow. Second operand 10 states and 117 transitions. [2024-06-28 02:26:39,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 371 transitions, 5195 flow [2024-06-28 02:26:40,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 371 transitions, 4675 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-06-28 02:26:40,540 INFO L231 Difference]: Finished difference. Result has 395 places, 351 transitions, 4069 flow [2024-06-28 02:26:40,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3833, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4069, PETRI_PLACES=395, PETRI_TRANSITIONS=351} [2024-06-28 02:26:40,541 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-28 02:26:40,541 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 351 transitions, 4069 flow [2024-06-28 02:26:40,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:40,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:40,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:40,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 02:26:40,541 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:40,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:40,542 INFO L85 PathProgramCache]: Analyzing trace with hash -772518133, now seen corresponding path program 17 times [2024-06-28 02:26:40,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:40,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496443047] [2024-06-28 02:26:40,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:40,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:42,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:42,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:42,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496443047] [2024-06-28 02:26:42,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496443047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:42,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:42,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:42,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070474809] [2024-06-28 02:26:42,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:42,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:42,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:42,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:42,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:42,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:42,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 351 transitions, 4069 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:42,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:42,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:42,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:43,403 INFO L124 PetriNetUnfolderBase]: 1109/1992 cut-off events. [2024-06-28 02:26:43,403 INFO L125 PetriNetUnfolderBase]: For 101177/101177 co-relation queries the response was YES. [2024-06-28 02:26:43,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12014 conditions, 1992 events. 1109/1992 cut-off events. For 101177/101177 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11787 event pairs, 140 based on Foata normal form. 2/1994 useless extension candidates. Maximal degree in co-relation 11838. Up to 1476 conditions per place. [2024-06-28 02:26:43,429 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 274 selfloop transitions, 101 changer transitions 0/377 dead transitions. [2024-06-28 02:26:43,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 377 transitions, 4973 flow [2024-06-28 02:26:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:43,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:43,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 02:26:43,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-28 02:26:43,430 INFO L175 Difference]: Start difference. First operand has 395 places, 351 transitions, 4069 flow. Second operand 11 states and 127 transitions. [2024-06-28 02:26:43,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 377 transitions, 4973 flow [2024-06-28 02:26:44,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 377 transitions, 4743 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:44,012 INFO L231 Difference]: Finished difference. Result has 399 places, 355 transitions, 4133 flow [2024-06-28 02:26:44,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3839, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4133, PETRI_PLACES=399, PETRI_TRANSITIONS=355} [2024-06-28 02:26:44,013 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-28 02:26:44,013 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 355 transitions, 4133 flow [2024-06-28 02:26:44,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:44,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:44,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:44,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 02:26:44,013 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:44,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:44,014 INFO L85 PathProgramCache]: Analyzing trace with hash -778954167, now seen corresponding path program 27 times [2024-06-28 02:26:44,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:44,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866829778] [2024-06-28 02:26:44,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:44,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:45,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:45,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:45,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866829778] [2024-06-28 02:26:45,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866829778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:45,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:45,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:45,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183979974] [2024-06-28 02:26:45,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:45,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:45,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:45,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:45,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:45,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:45,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 355 transitions, 4133 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:45,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:45,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:45,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:45,881 INFO L124 PetriNetUnfolderBase]: 1113/2000 cut-off events. [2024-06-28 02:26:45,881 INFO L125 PetriNetUnfolderBase]: For 103311/103311 co-relation queries the response was YES. [2024-06-28 02:26:45,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12087 conditions, 2000 events. 1113/2000 cut-off events. For 103311/103311 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11849 event pairs, 144 based on Foata normal form. 2/2002 useless extension candidates. Maximal degree in co-relation 11909. Up to 1494 conditions per place. [2024-06-28 02:26:45,906 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 273 selfloop transitions, 99 changer transitions 0/374 dead transitions. [2024-06-28 02:26:45,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 374 transitions, 4973 flow [2024-06-28 02:26:45,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:45,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:45,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 02:26:45,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-28 02:26:45,907 INFO L175 Difference]: Start difference. First operand has 399 places, 355 transitions, 4133 flow. Second operand 10 states and 114 transitions. [2024-06-28 02:26:45,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 374 transitions, 4973 flow [2024-06-28 02:26:46,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 374 transitions, 4725 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:46,410 INFO L231 Difference]: Finished difference. Result has 401 places, 356 transitions, 4125 flow [2024-06-28 02:26:46,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3885, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4125, PETRI_PLACES=401, PETRI_TRANSITIONS=356} [2024-06-28 02:26:46,410 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 370 predicate places. [2024-06-28 02:26:46,410 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 356 transitions, 4125 flow [2024-06-28 02:26:46,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:46,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:46,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:46,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 02:26:46,411 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:46,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:46,411 INFO L85 PathProgramCache]: Analyzing trace with hash -778958817, now seen corresponding path program 28 times [2024-06-28 02:26:46,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:46,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382006316] [2024-06-28 02:26:46,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:46,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:47,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:47,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:47,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382006316] [2024-06-28 02:26:47,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382006316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:47,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:47,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:47,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933241253] [2024-06-28 02:26:47,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:47,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:47,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:47,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:47,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:47,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:47,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 356 transitions, 4125 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:47,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:47,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:47,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:48,234 INFO L124 PetriNetUnfolderBase]: 1124/2021 cut-off events. [2024-06-28 02:26:48,234 INFO L125 PetriNetUnfolderBase]: For 115438/115438 co-relation queries the response was YES. [2024-06-28 02:26:48,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12460 conditions, 2021 events. 1124/2021 cut-off events. For 115438/115438 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 12000 event pairs, 145 based on Foata normal form. 2/2023 useless extension candidates. Maximal degree in co-relation 12281. Up to 1486 conditions per place. [2024-06-28 02:26:48,260 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 273 selfloop transitions, 102 changer transitions 0/377 dead transitions. [2024-06-28 02:26:48,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 377 transitions, 5201 flow [2024-06-28 02:26:48,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:48,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:48,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 02:26:48,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-28 02:26:48,261 INFO L175 Difference]: Start difference. First operand has 401 places, 356 transitions, 4125 flow. Second operand 10 states and 115 transitions. [2024-06-28 02:26:48,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 377 transitions, 5201 flow [2024-06-28 02:26:48,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 377 transitions, 4971 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:48,801 INFO L231 Difference]: Finished difference. Result has 403 places, 358 transitions, 4181 flow [2024-06-28 02:26:48,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3895, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4181, PETRI_PLACES=403, PETRI_TRANSITIONS=358} [2024-06-28 02:26:48,801 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 372 predicate places. [2024-06-28 02:26:48,801 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 358 transitions, 4181 flow [2024-06-28 02:26:48,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:48,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:48,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:48,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 02:26:48,802 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:48,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:48,802 INFO L85 PathProgramCache]: Analyzing trace with hash -778774243, now seen corresponding path program 18 times [2024-06-28 02:26:48,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:48,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942208607] [2024-06-28 02:26:48,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:48,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:50,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:50,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:50,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942208607] [2024-06-28 02:26:50,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942208607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:50,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:50,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:50,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350872428] [2024-06-28 02:26:50,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:50,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:50,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:50,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:50,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:50,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:50,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 358 transitions, 4181 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:50,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:50,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:50,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:51,238 INFO L124 PetriNetUnfolderBase]: 1120/2015 cut-off events. [2024-06-28 02:26:51,238 INFO L125 PetriNetUnfolderBase]: For 108073/108073 co-relation queries the response was YES. [2024-06-28 02:26:51,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12194 conditions, 2015 events. 1120/2015 cut-off events. For 108073/108073 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11978 event pairs, 145 based on Foata normal form. 2/2017 useless extension candidates. Maximal degree in co-relation 12014. Up to 1499 conditions per place. [2024-06-28 02:26:51,259 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 274 selfloop transitions, 102 changer transitions 0/378 dead transitions. [2024-06-28 02:26:51,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 378 transitions, 5001 flow [2024-06-28 02:26:51,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:51,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:51,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:26:51,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-28 02:26:51,260 INFO L175 Difference]: Start difference. First operand has 403 places, 358 transitions, 4181 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:26:51,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 378 transitions, 5001 flow [2024-06-28 02:26:51,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 378 transitions, 4790 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-28 02:26:51,828 INFO L231 Difference]: Finished difference. Result has 408 places, 358 transitions, 4179 flow [2024-06-28 02:26:51,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3970, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4179, PETRI_PLACES=408, PETRI_TRANSITIONS=358} [2024-06-28 02:26:51,829 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 377 predicate places. [2024-06-28 02:26:51,829 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 358 transitions, 4179 flow [2024-06-28 02:26:51,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:51,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:51,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:51,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 02:26:51,845 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:51,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:51,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1125598035, now seen corresponding path program 19 times [2024-06-28 02:26:51,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:51,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521707381] [2024-06-28 02:26:51,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:51,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:54,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:54,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:54,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521707381] [2024-06-28 02:26:54,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521707381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:54,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:54,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:54,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389018447] [2024-06-28 02:26:54,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:54,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:54,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:54,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:54,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:54,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:54,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 358 transitions, 4179 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:54,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:54,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:54,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:54,890 INFO L124 PetriNetUnfolderBase]: 1126/2024 cut-off events. [2024-06-28 02:26:54,890 INFO L125 PetriNetUnfolderBase]: For 109257/109257 co-relation queries the response was YES. [2024-06-28 02:26:54,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12339 conditions, 2024 events. 1126/2024 cut-off events. For 109257/109257 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 12089 event pairs, 427 based on Foata normal form. 2/2026 useless extension candidates. Maximal degree in co-relation 12157. Up to 1960 conditions per place. [2024-06-28 02:26:54,916 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 353 selfloop transitions, 23 changer transitions 0/378 dead transitions. [2024-06-28 02:26:54,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 378 transitions, 5216 flow [2024-06-28 02:26:54,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:26:54,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:26:54,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-28 02:26:54,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-28 02:26:54,917 INFO L175 Difference]: Start difference. First operand has 408 places, 358 transitions, 4179 flow. Second operand 12 states and 119 transitions. [2024-06-28 02:26:54,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 378 transitions, 5216 flow [2024-06-28 02:26:55,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 378 transitions, 4975 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 02:26:55,605 INFO L231 Difference]: Finished difference. Result has 409 places, 361 transitions, 4035 flow [2024-06-28 02:26:55,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3938, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4035, PETRI_PLACES=409, PETRI_TRANSITIONS=361} [2024-06-28 02:26:55,606 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-28 02:26:55,606 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 361 transitions, 4035 flow [2024-06-28 02:26:55,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:55,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:55,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:55,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 02:26:55,607 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:55,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:55,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1410943859, now seen corresponding path program 29 times [2024-06-28 02:26:55,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:55,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892703444] [2024-06-28 02:26:55,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:55,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:56,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:56,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:56,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892703444] [2024-06-28 02:26:56,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892703444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:56,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:56,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:26:56,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199189214] [2024-06-28 02:26:56,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:56,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:26:56,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:56,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:26:56,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:26:56,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:56,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 361 transitions, 4035 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:56,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:56,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:56,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:57,401 INFO L124 PetriNetUnfolderBase]: 1123/2020 cut-off events. [2024-06-28 02:26:57,402 INFO L125 PetriNetUnfolderBase]: For 101006/101006 co-relation queries the response was YES. [2024-06-28 02:26:57,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11848 conditions, 2020 events. 1123/2020 cut-off events. For 101006/101006 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 12043 event pairs, 138 based on Foata normal form. 2/2022 useless extension candidates. Maximal degree in co-relation 11666. Up to 1514 conditions per place. [2024-06-28 02:26:57,428 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 260 selfloop transitions, 118 changer transitions 0/380 dead transitions. [2024-06-28 02:26:57,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 380 transitions, 4857 flow [2024-06-28 02:26:57,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:57,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:57,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 02:26:57,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-28 02:26:57,430 INFO L175 Difference]: Start difference. First operand has 409 places, 361 transitions, 4035 flow. Second operand 10 states and 114 transitions. [2024-06-28 02:26:57,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 380 transitions, 4857 flow [2024-06-28 02:26:58,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 380 transitions, 4758 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 02:26:58,043 INFO L231 Difference]: Finished difference. Result has 410 places, 361 transitions, 4176 flow [2024-06-28 02:26:58,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3936, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4176, PETRI_PLACES=410, PETRI_TRANSITIONS=361} [2024-06-28 02:26:58,044 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 379 predicate places. [2024-06-28 02:26:58,044 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 361 transitions, 4176 flow [2024-06-28 02:26:58,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:58,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:58,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:58,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 02:26:58,045 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:58,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:58,045 INFO L85 PathProgramCache]: Analyzing trace with hash -304789219, now seen corresponding path program 20 times [2024-06-28 02:26:58,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:58,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081104745] [2024-06-28 02:26:58,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:58,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:59,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:59,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:59,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081104745] [2024-06-28 02:26:59,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081104745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:59,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:59,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:59,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520021347] [2024-06-28 02:26:59,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:59,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:59,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:59,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:59,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:59,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:26:59,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 361 transitions, 4176 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:59,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:59,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:26:59,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:59,721 INFO L124 PetriNetUnfolderBase]: 1119/2013 cut-off events. [2024-06-28 02:26:59,722 INFO L125 PetriNetUnfolderBase]: For 93065/93065 co-relation queries the response was YES. [2024-06-28 02:26:59,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11846 conditions, 2013 events. 1119/2013 cut-off events. For 93065/93065 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 12052 event pairs, 424 based on Foata normal form. 2/2015 useless extension candidates. Maximal degree in co-relation 11663. Up to 1937 conditions per place. [2024-06-28 02:26:59,749 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 347 selfloop transitions, 27 changer transitions 0/376 dead transitions. [2024-06-28 02:26:59,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 376 transitions, 4970 flow [2024-06-28 02:26:59,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:59,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:59,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 02:26:59,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-28 02:26:59,750 INFO L175 Difference]: Start difference. First operand has 410 places, 361 transitions, 4176 flow. Second operand 11 states and 114 transitions. [2024-06-28 02:26:59,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 376 transitions, 4970 flow [2024-06-28 02:27:00,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 376 transitions, 4690 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-28 02:27:00,399 INFO L231 Difference]: Finished difference. Result has 411 places, 361 transitions, 3955 flow [2024-06-28 02:27:00,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3896, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3955, PETRI_PLACES=411, PETRI_TRANSITIONS=361} [2024-06-28 02:27:00,400 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 380 predicate places. [2024-06-28 02:27:00,400 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 361 transitions, 3955 flow [2024-06-28 02:27:00,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:00,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:00,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:00,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 02:27:00,400 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:00,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:00,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1726765751, now seen corresponding path program 30 times [2024-06-28 02:27:00,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:00,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892544566] [2024-06-28 02:27:00,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:00,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:01,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:01,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892544566] [2024-06-28 02:27:01,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892544566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:01,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:01,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:27:01,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631274117] [2024-06-28 02:27:01,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:01,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:27:01,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:01,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:27:01,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:27:01,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:01,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 361 transitions, 3955 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:01,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:01,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:01,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:02,265 INFO L124 PetriNetUnfolderBase]: 1123/2022 cut-off events. [2024-06-28 02:27:02,265 INFO L125 PetriNetUnfolderBase]: For 94818/94818 co-relation queries the response was YES. [2024-06-28 02:27:02,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11633 conditions, 2022 events. 1123/2022 cut-off events. For 94818/94818 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 12074 event pairs, 165 based on Foata normal form. 2/2024 useless extension candidates. Maximal degree in co-relation 11449. Up to 1516 conditions per place. [2024-06-28 02:27:02,292 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 292 selfloop transitions, 88 changer transitions 0/382 dead transitions. [2024-06-28 02:27:02,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 382 transitions, 4825 flow [2024-06-28 02:27:02,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:02,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:02,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 02:27:02,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-28 02:27:02,293 INFO L175 Difference]: Start difference. First operand has 411 places, 361 transitions, 3955 flow. Second operand 10 states and 118 transitions. [2024-06-28 02:27:02,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 382 transitions, 4825 flow [2024-06-28 02:27:02,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 382 transitions, 4766 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 02:27:02,910 INFO L231 Difference]: Finished difference. Result has 411 places, 362 transitions, 4118 flow [2024-06-28 02:27:02,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3896, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4118, PETRI_PLACES=411, PETRI_TRANSITIONS=362} [2024-06-28 02:27:02,910 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 380 predicate places. [2024-06-28 02:27:02,910 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 362 transitions, 4118 flow [2024-06-28 02:27:02,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:02,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:02,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:02,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 02:27:02,911 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:02,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:02,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1447574327, now seen corresponding path program 21 times [2024-06-28 02:27:02,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:02,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050726079] [2024-06-28 02:27:02,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:02,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:04,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:04,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050726079] [2024-06-28 02:27:04,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050726079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:04,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:04,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:27:04,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244188022] [2024-06-28 02:27:04,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:04,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:27:04,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:04,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:27:04,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:27:04,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:04,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 362 transitions, 4118 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:04,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:04,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:04,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:05,280 INFO L124 PetriNetUnfolderBase]: 1145/2058 cut-off events. [2024-06-28 02:27:05,280 INFO L125 PetriNetUnfolderBase]: For 108435/108435 co-relation queries the response was YES. [2024-06-28 02:27:05,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12338 conditions, 2058 events. 1145/2058 cut-off events. For 108435/108435 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 12308 event pairs, 137 based on Foata normal form. 2/2060 useless extension candidates. Maximal degree in co-relation 12153. Up to 1503 conditions per place. [2024-06-28 02:27:05,304 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 262 selfloop transitions, 128 changer transitions 0/392 dead transitions. [2024-06-28 02:27:05,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 392 transitions, 5336 flow [2024-06-28 02:27:05,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:05,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 02:27:05,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-28 02:27:05,305 INFO L175 Difference]: Start difference. First operand has 411 places, 362 transitions, 4118 flow. Second operand 11 states and 131 transitions. [2024-06-28 02:27:05,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 392 transitions, 5336 flow [2024-06-28 02:27:05,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 392 transitions, 5094 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-28 02:27:05,941 INFO L231 Difference]: Finished difference. Result has 413 places, 368 transitions, 4301 flow [2024-06-28 02:27:05,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3876, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4301, PETRI_PLACES=413, PETRI_TRANSITIONS=368} [2024-06-28 02:27:05,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 382 predicate places. [2024-06-28 02:27:05,942 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 368 transitions, 4301 flow [2024-06-28 02:27:05,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:05,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:05,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:05,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 02:27:05,942 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:05,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:05,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1145651563, now seen corresponding path program 22 times [2024-06-28 02:27:05,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:05,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614130717] [2024-06-28 02:27:05,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:05,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:07,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:07,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:07,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614130717] [2024-06-28 02:27:07,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614130717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:07,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:07,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:27:07,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51476027] [2024-06-28 02:27:07,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:07,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:27:07,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:07,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:27:07,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:27:08,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:08,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 368 transitions, 4301 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:08,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:08,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:08,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:09,046 INFO L124 PetriNetUnfolderBase]: 1151/2068 cut-off events. [2024-06-28 02:27:09,046 INFO L125 PetriNetUnfolderBase]: For 110370/110370 co-relation queries the response was YES. [2024-06-28 02:27:09,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12544 conditions, 2068 events. 1151/2068 cut-off events. For 110370/110370 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 12347 event pairs, 164 based on Foata normal form. 2/2070 useless extension candidates. Maximal degree in co-relation 12357. Up to 1530 conditions per place. [2024-06-28 02:27:09,071 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 297 selfloop transitions, 94 changer transitions 0/393 dead transitions. [2024-06-28 02:27:09,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 393 transitions, 5237 flow [2024-06-28 02:27:09,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:09,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:09,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 02:27:09,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-28 02:27:09,073 INFO L175 Difference]: Start difference. First operand has 413 places, 368 transitions, 4301 flow. Second operand 11 states and 130 transitions. [2024-06-28 02:27:09,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 393 transitions, 5237 flow [2024-06-28 02:27:09,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 393 transitions, 4994 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 02:27:09,805 INFO L231 Difference]: Finished difference. Result has 418 places, 370 transitions, 4325 flow [2024-06-28 02:27:09,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4058, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4325, PETRI_PLACES=418, PETRI_TRANSITIONS=370} [2024-06-28 02:27:09,805 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 387 predicate places. [2024-06-28 02:27:09,805 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 370 transitions, 4325 flow [2024-06-28 02:27:09,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:09,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:09,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:09,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 02:27:09,806 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:09,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:09,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1447804967, now seen corresponding path program 23 times [2024-06-28 02:27:09,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:09,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281501383] [2024-06-28 02:27:09,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:09,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:11,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:11,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281501383] [2024-06-28 02:27:11,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281501383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:11,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:11,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:27:11,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842428453] [2024-06-28 02:27:11,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:11,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:27:11,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:11,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:27:11,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:27:11,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:11,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 370 transitions, 4325 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:11,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:11,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:11,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:12,515 INFO L124 PetriNetUnfolderBase]: 1147/2062 cut-off events. [2024-06-28 02:27:12,515 INFO L125 PetriNetUnfolderBase]: For 101279/101279 co-relation queries the response was YES. [2024-06-28 02:27:12,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12297 conditions, 2062 events. 1147/2062 cut-off events. For 101279/101279 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 12341 event pairs, 138 based on Foata normal form. 2/2064 useless extension candidates. Maximal degree in co-relation 12108. Up to 1546 conditions per place. [2024-06-28 02:27:12,543 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 268 selfloop transitions, 121 changer transitions 0/391 dead transitions. [2024-06-28 02:27:12,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 391 transitions, 5177 flow [2024-06-28 02:27:12,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:12,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:12,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:27:12,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-28 02:27:12,544 INFO L175 Difference]: Start difference. First operand has 418 places, 370 transitions, 4325 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:27:12,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 391 transitions, 5177 flow [2024-06-28 02:27:13,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 391 transitions, 4888 flow, removed 52 selfloop flow, removed 9 redundant places. [2024-06-28 02:27:13,209 INFO L231 Difference]: Finished difference. Result has 420 places, 370 transitions, 4283 flow [2024-06-28 02:27:13,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4036, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4283, PETRI_PLACES=420, PETRI_TRANSITIONS=370} [2024-06-28 02:27:13,210 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 389 predicate places. [2024-06-28 02:27:13,210 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 370 transitions, 4283 flow [2024-06-28 02:27:13,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:13,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:13,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:13,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 02:27:13,211 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:13,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:13,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1145420923, now seen corresponding path program 24 times [2024-06-28 02:27:13,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:13,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846311602] [2024-06-28 02:27:13,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:13,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:14,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:14,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:14,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846311602] [2024-06-28 02:27:14,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846311602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:14,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:14,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:27:14,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677499801] [2024-06-28 02:27:14,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:14,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:27:14,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:14,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:27:14,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:27:14,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:14,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 370 transitions, 4283 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:14,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:14,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:14,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:15,432 INFO L124 PetriNetUnfolderBase]: 1159/2082 cut-off events. [2024-06-28 02:27:15,433 INFO L125 PetriNetUnfolderBase]: For 102734/102734 co-relation queries the response was YES. [2024-06-28 02:27:15,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12444 conditions, 2082 events. 1159/2082 cut-off events. For 102734/102734 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 12444 event pairs, 166 based on Foata normal form. 2/2084 useless extension candidates. Maximal degree in co-relation 12254. Up to 1566 conditions per place. [2024-06-28 02:27:15,461 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 303 selfloop transitions, 91 changer transitions 0/396 dead transitions. [2024-06-28 02:27:15,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 396 transitions, 5235 flow [2024-06-28 02:27:15,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:15,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 02:27:15,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 02:27:15,462 INFO L175 Difference]: Start difference. First operand has 420 places, 370 transitions, 4283 flow. Second operand 11 states and 128 transitions. [2024-06-28 02:27:15,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 396 transitions, 5235 flow [2024-06-28 02:27:16,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 396 transitions, 4976 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:27:16,225 INFO L231 Difference]: Finished difference. Result has 421 places, 374 transitions, 4308 flow [2024-06-28 02:27:16,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4024, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4308, PETRI_PLACES=421, PETRI_TRANSITIONS=374} [2024-06-28 02:27:16,225 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 390 predicate places. [2024-06-28 02:27:16,225 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 374 transitions, 4308 flow [2024-06-28 02:27:16,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:16,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:16,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:16,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 02:27:16,226 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:16,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:16,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1138984889, now seen corresponding path program 31 times [2024-06-28 02:27:16,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:16,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419592810] [2024-06-28 02:27:16,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:16,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:17,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:17,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:17,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419592810] [2024-06-28 02:27:17,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419592810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:17,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:17,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:27:17,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511692845] [2024-06-28 02:27:17,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:17,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:27:17,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:17,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:27:17,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:27:17,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:17,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 374 transitions, 4308 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:17,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:17,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:17,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:18,214 INFO L124 PetriNetUnfolderBase]: 1163/2090 cut-off events. [2024-06-28 02:27:18,214 INFO L125 PetriNetUnfolderBase]: For 105541/105541 co-relation queries the response was YES. [2024-06-28 02:27:18,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12448 conditions, 2090 events. 1163/2090 cut-off events. For 105541/105541 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 12515 event pairs, 168 based on Foata normal form. 2/2092 useless extension candidates. Maximal degree in co-relation 12257. Up to 1584 conditions per place. [2024-06-28 02:27:18,243 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 305 selfloop transitions, 87 changer transitions 0/394 dead transitions. [2024-06-28 02:27:18,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 394 transitions, 5198 flow [2024-06-28 02:27:18,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:18,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:18,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 02:27:18,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-28 02:27:18,259 INFO L175 Difference]: Start difference. First operand has 421 places, 374 transitions, 4308 flow. Second operand 10 states and 118 transitions. [2024-06-28 02:27:18,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 394 transitions, 5198 flow [2024-06-28 02:27:18,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 394 transitions, 4954 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 02:27:18,836 INFO L231 Difference]: Finished difference. Result has 423 places, 375 transitions, 4286 flow [2024-06-28 02:27:18,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4064, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4286, PETRI_PLACES=423, PETRI_TRANSITIONS=375} [2024-06-28 02:27:18,837 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 392 predicate places. [2024-06-28 02:27:18,837 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 375 transitions, 4286 flow [2024-06-28 02:27:18,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:18,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:18,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:18,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 02:27:18,837 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:18,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:18,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1138980239, now seen corresponding path program 32 times [2024-06-28 02:27:18,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:18,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911329534] [2024-06-28 02:27:18,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:18,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:20,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:20,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911329534] [2024-06-28 02:27:20,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911329534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:20,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:20,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:27:20,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260867284] [2024-06-28 02:27:20,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:20,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:27:20,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:20,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:27:20,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:27:20,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:20,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 375 transitions, 4286 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:20,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:20,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:20,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:20,709 INFO L124 PetriNetUnfolderBase]: 1167/2098 cut-off events. [2024-06-28 02:27:20,710 INFO L125 PetriNetUnfolderBase]: For 107728/107728 co-relation queries the response was YES. [2024-06-28 02:27:20,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12475 conditions, 2098 events. 1167/2098 cut-off events. For 107728/107728 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 12572 event pairs, 168 based on Foata normal form. 2/2100 useless extension candidates. Maximal degree in co-relation 12283. Up to 1572 conditions per place. [2024-06-28 02:27:20,737 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 304 selfloop transitions, 89 changer transitions 0/395 dead transitions. [2024-06-28 02:27:20,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 395 transitions, 5178 flow [2024-06-28 02:27:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:20,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 02:27:20,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-28 02:27:20,739 INFO L175 Difference]: Start difference. First operand has 423 places, 375 transitions, 4286 flow. Second operand 10 states and 118 transitions. [2024-06-28 02:27:20,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 395 transitions, 5178 flow [2024-06-28 02:27:21,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 395 transitions, 4966 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 02:27:21,316 INFO L231 Difference]: Finished difference. Result has 425 places, 376 transitions, 4302 flow [2024-06-28 02:27:21,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4074, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4302, PETRI_PLACES=425, PETRI_TRANSITIONS=376} [2024-06-28 02:27:21,317 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 394 predicate places. [2024-06-28 02:27:21,317 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 376 transitions, 4302 flow [2024-06-28 02:27:21,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:21,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:21,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:21,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 02:27:21,318 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:21,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:21,318 INFO L85 PathProgramCache]: Analyzing trace with hash 536567315, now seen corresponding path program 25 times [2024-06-28 02:27:21,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:21,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684385459] [2024-06-28 02:27:21,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:21,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:22,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:22,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:22,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684385459] [2024-06-28 02:27:22,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684385459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:22,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:22,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:27:22,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777899132] [2024-06-28 02:27:22,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:22,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:27:22,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:22,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:27:22,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:27:22,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:22,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 376 transitions, 4302 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:22,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:22,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:22,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:23,660 INFO L124 PetriNetUnfolderBase]: 1179/2118 cut-off events. [2024-06-28 02:27:23,661 INFO L125 PetriNetUnfolderBase]: For 109717/109717 co-relation queries the response was YES. [2024-06-28 02:27:23,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12600 conditions, 2118 events. 1179/2118 cut-off events. For 109717/109717 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 12739 event pairs, 168 based on Foata normal form. 2/2120 useless extension candidates. Maximal degree in co-relation 12407. Up to 1602 conditions per place. [2024-06-28 02:27:23,685 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 308 selfloop transitions, 89 changer transitions 0/399 dead transitions. [2024-06-28 02:27:23,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 399 transitions, 5256 flow [2024-06-28 02:27:23,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:23,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:23,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 02:27:23,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:27:23,686 INFO L175 Difference]: Start difference. First operand has 425 places, 376 transitions, 4302 flow. Second operand 10 states and 120 transitions. [2024-06-28 02:27:23,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 399 transitions, 5256 flow [2024-06-28 02:27:24,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 399 transitions, 5038 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 02:27:24,290 INFO L231 Difference]: Finished difference. Result has 427 places, 379 transitions, 4359 flow [2024-06-28 02:27:24,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4084, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4359, PETRI_PLACES=427, PETRI_TRANSITIONS=379} [2024-06-28 02:27:24,290 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 396 predicate places. [2024-06-28 02:27:24,291 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 379 transitions, 4359 flow [2024-06-28 02:27:24,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:24,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:24,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:24,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 02:27:24,291 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:24,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:24,291 INFO L85 PathProgramCache]: Analyzing trace with hash 365684961, now seen corresponding path program 33 times [2024-06-28 02:27:24,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:24,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203180457] [2024-06-28 02:27:24,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:24,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:25,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:25,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203180457] [2024-06-28 02:27:25,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203180457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:25,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:25,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:27:25,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472972567] [2024-06-28 02:27:25,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:25,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:27:25,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:25,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:27:25,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:27:25,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:25,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 379 transitions, 4359 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:25,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:25,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:25,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:26,161 INFO L124 PetriNetUnfolderBase]: 1183/2126 cut-off events. [2024-06-28 02:27:26,162 INFO L125 PetriNetUnfolderBase]: For 111912/111912 co-relation queries the response was YES. [2024-06-28 02:27:26,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12656 conditions, 2126 events. 1183/2126 cut-off events. For 111912/111912 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 12768 event pairs, 176 based on Foata normal form. 2/2128 useless extension candidates. Maximal degree in co-relation 12462. Up to 1620 conditions per place. [2024-06-28 02:27:26,189 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 305 selfloop transitions, 90 changer transitions 0/397 dead transitions. [2024-06-28 02:27:26,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 397 transitions, 5249 flow [2024-06-28 02:27:26,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:26,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:26,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 02:27:26,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-28 02:27:26,191 INFO L175 Difference]: Start difference. First operand has 427 places, 379 transitions, 4359 flow. Second operand 10 states and 114 transitions. [2024-06-28 02:27:26,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 397 transitions, 5249 flow [2024-06-28 02:27:26,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 397 transitions, 5007 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 02:27:26,816 INFO L231 Difference]: Finished difference. Result has 429 places, 380 transitions, 4349 flow [2024-06-28 02:27:26,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4117, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4349, PETRI_PLACES=429, PETRI_TRANSITIONS=380} [2024-06-28 02:27:26,816 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 398 predicate places. [2024-06-28 02:27:26,816 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 380 transitions, 4349 flow [2024-06-28 02:27:26,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:26,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:26,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:26,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 02:27:26,817 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:26,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:26,817 INFO L85 PathProgramCache]: Analyzing trace with hash 968277809, now seen corresponding path program 34 times [2024-06-28 02:27:26,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:26,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176217627] [2024-06-28 02:27:26,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:26,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:27,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:27,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:27,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176217627] [2024-06-28 02:27:27,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176217627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:27,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:27,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:27:27,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5015028] [2024-06-28 02:27:27,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:27,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:27:27,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:27,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:27:27,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:27:28,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:28,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 380 transitions, 4349 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:28,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:28,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:28,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:28,730 INFO L124 PetriNetUnfolderBase]: 1187/2134 cut-off events. [2024-06-28 02:27:28,730 INFO L125 PetriNetUnfolderBase]: For 114044/114044 co-relation queries the response was YES. [2024-06-28 02:27:28,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12701 conditions, 2134 events. 1187/2134 cut-off events. For 114044/114044 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 12838 event pairs, 176 based on Foata normal form. 2/2136 useless extension candidates. Maximal degree in co-relation 12506. Up to 1614 conditions per place. [2024-06-28 02:27:28,759 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 305 selfloop transitions, 91 changer transitions 0/398 dead transitions. [2024-06-28 02:27:28,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 398 transitions, 5241 flow [2024-06-28 02:27:28,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 02:27:28,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-28 02:27:28,760 INFO L175 Difference]: Start difference. First operand has 429 places, 380 transitions, 4349 flow. Second operand 10 states and 115 transitions. [2024-06-28 02:27:28,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 398 transitions, 5241 flow [2024-06-28 02:27:29,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 398 transitions, 5019 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 02:27:29,396 INFO L231 Difference]: Finished difference. Result has 431 places, 381 transitions, 4363 flow [2024-06-28 02:27:29,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4127, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4363, PETRI_PLACES=431, PETRI_TRANSITIONS=381} [2024-06-28 02:27:29,397 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 400 predicate places. [2024-06-28 02:27:29,397 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 381 transitions, 4363 flow [2024-06-28 02:27:29,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:29,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:29,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:29,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 02:27:29,397 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:29,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:29,398 INFO L85 PathProgramCache]: Analyzing trace with hash 365564991, now seen corresponding path program 35 times [2024-06-28 02:27:29,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:29,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918136786] [2024-06-28 02:27:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:29,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:30,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:30,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918136786] [2024-06-28 02:27:30,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918136786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:30,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:30,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:27:30,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796813242] [2024-06-28 02:27:30,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:30,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:27:30,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:30,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:27:30,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:27:30,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:30,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 381 transitions, 4363 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:30,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:30,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:30,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:31,474 INFO L124 PetriNetUnfolderBase]: 1184/2129 cut-off events. [2024-06-28 02:27:31,474 INFO L125 PetriNetUnfolderBase]: For 103142/103142 co-relation queries the response was YES. [2024-06-28 02:27:31,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12368 conditions, 2129 events. 1184/2129 cut-off events. For 103142/103142 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 12827 event pairs, 177 based on Foata normal form. 2/2131 useless extension candidates. Maximal degree in co-relation 12172. Up to 1529 conditions per place. [2024-06-28 02:27:31,504 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 297 selfloop transitions, 99 changer transitions 0/398 dead transitions. [2024-06-28 02:27:31,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 398 transitions, 5205 flow [2024-06-28 02:27:31,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:31,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:31,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 02:27:31,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-28 02:27:31,505 INFO L175 Difference]: Start difference. First operand has 431 places, 381 transitions, 4363 flow. Second operand 10 states and 114 transitions. [2024-06-28 02:27:31,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 398 transitions, 5205 flow [2024-06-28 02:27:32,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 398 transitions, 4979 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 02:27:32,157 INFO L231 Difference]: Finished difference. Result has 433 places, 381 transitions, 4339 flow [2024-06-28 02:27:32,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4137, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4339, PETRI_PLACES=433, PETRI_TRANSITIONS=381} [2024-06-28 02:27:32,157 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2024-06-28 02:27:32,158 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 381 transitions, 4339 flow [2024-06-28 02:27:32,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:32,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:32,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:32,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 02:27:32,158 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:32,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:32,158 INFO L85 PathProgramCache]: Analyzing trace with hash 370333535, now seen corresponding path program 26 times [2024-06-28 02:27:32,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:32,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503891297] [2024-06-28 02:27:32,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:32,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:33,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:33,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:33,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503891297] [2024-06-28 02:27:33,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503891297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:33,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:33,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:27:33,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451370241] [2024-06-28 02:27:33,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:33,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:27:33,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:33,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:27:33,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:27:33,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:33,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 381 transitions, 4339 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:33,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:33,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:33,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:34,185 INFO L124 PetriNetUnfolderBase]: 1180/2123 cut-off events. [2024-06-28 02:27:34,185 INFO L125 PetriNetUnfolderBase]: For 91638/91638 co-relation queries the response was YES. [2024-06-28 02:27:34,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12042 conditions, 2123 events. 1180/2123 cut-off events. For 91638/91638 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 12791 event pairs, 177 based on Foata normal form. 2/2125 useless extension candidates. Maximal degree in co-relation 11845. Up to 1607 conditions per place. [2024-06-28 02:27:34,212 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 306 selfloop transitions, 93 changer transitions 0/401 dead transitions. [2024-06-28 02:27:34,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 401 transitions, 5208 flow [2024-06-28 02:27:34,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:34,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:34,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:27:34,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-28 02:27:34,213 INFO L175 Difference]: Start difference. First operand has 433 places, 381 transitions, 4339 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:27:34,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 401 transitions, 5208 flow [2024-06-28 02:27:34,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 401 transitions, 4772 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-06-28 02:27:34,769 INFO L231 Difference]: Finished difference. Result has 435 places, 382 transitions, 4108 flow [2024-06-28 02:27:34,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3903, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4108, PETRI_PLACES=435, PETRI_TRANSITIONS=382} [2024-06-28 02:27:34,769 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 404 predicate places. [2024-06-28 02:27:34,769 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 382 transitions, 4108 flow [2024-06-28 02:27:34,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:34,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:34,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:34,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 02:27:34,770 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:34,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:34,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1211519232, now seen corresponding path program 1 times [2024-06-28 02:27:34,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:34,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103744584] [2024-06-28 02:27:34,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:34,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:36,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:36,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103744584] [2024-06-28 02:27:36,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103744584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:36,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:36,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:36,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374637757] [2024-06-28 02:27:36,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:36,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:36,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:36,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:36,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:36,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:36,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 382 transitions, 4108 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:36,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:36,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:36,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:36,850 INFO L124 PetriNetUnfolderBase]: 1184/2131 cut-off events. [2024-06-28 02:27:36,850 INFO L125 PetriNetUnfolderBase]: For 92524/92524 co-relation queries the response was YES. [2024-06-28 02:27:36,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11615 conditions, 2131 events. 1184/2131 cut-off events. For 92524/92524 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 12893 event pairs, 273 based on Foata normal form. 2/2133 useless extension candidates. Maximal degree in co-relation 11417. Up to 2003 conditions per place. [2024-06-28 02:27:36,878 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 376 selfloop transitions, 28 changer transitions 0/406 dead transitions. [2024-06-28 02:27:36,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 406 transitions, 4986 flow [2024-06-28 02:27:36,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:27:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:27:36,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 02:27:36,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-28 02:27:36,879 INFO L175 Difference]: Start difference. First operand has 435 places, 382 transitions, 4108 flow. Second operand 12 states and 123 transitions. [2024-06-28 02:27:36,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 406 transitions, 4986 flow [2024-06-28 02:27:37,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 406 transitions, 4535 flow, removed 32 selfloop flow, removed 13 redundant places. [2024-06-28 02:27:37,365 INFO L231 Difference]: Finished difference. Result has 434 places, 383 transitions, 3731 flow [2024-06-28 02:27:37,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3657, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3731, PETRI_PLACES=434, PETRI_TRANSITIONS=383} [2024-06-28 02:27:37,366 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 403 predicate places. [2024-06-28 02:27:37,366 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 383 transitions, 3731 flow [2024-06-28 02:27:37,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:37,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:37,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:37,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 02:27:37,367 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:37,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:37,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1856364024, now seen corresponding path program 2 times [2024-06-28 02:27:37,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:37,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011983931] [2024-06-28 02:27:37,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:37,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:38,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:38,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:38,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011983931] [2024-06-28 02:27:38,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011983931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:38,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:38,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:38,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214767506] [2024-06-28 02:27:38,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:38,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:38,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:38,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:38,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:39,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:39,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 383 transitions, 3731 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:39,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:39,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:39,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:39,691 INFO L124 PetriNetUnfolderBase]: 1188/2139 cut-off events. [2024-06-28 02:27:39,691 INFO L125 PetriNetUnfolderBase]: For 90568/90568 co-relation queries the response was YES. [2024-06-28 02:27:39,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10889 conditions, 2139 events. 1188/2139 cut-off events. For 90568/90568 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 12967 event pairs, 283 based on Foata normal form. 2/2141 useless extension candidates. Maximal degree in co-relation 10694. Up to 2010 conditions per place. [2024-06-28 02:27:39,718 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 369 selfloop transitions, 35 changer transitions 0/406 dead transitions. [2024-06-28 02:27:39,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 406 transitions, 4615 flow [2024-06-28 02:27:39,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:27:39,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:27:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-28 02:27:39,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-28 02:27:39,720 INFO L175 Difference]: Start difference. First operand has 434 places, 383 transitions, 3731 flow. Second operand 12 states and 126 transitions. [2024-06-28 02:27:39,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 406 transitions, 4615 flow [2024-06-28 02:27:40,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 406 transitions, 4549 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 02:27:40,259 INFO L231 Difference]: Finished difference. Result has 436 places, 384 transitions, 3755 flow [2024-06-28 02:27:40,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3665, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3755, PETRI_PLACES=436, PETRI_TRANSITIONS=384} [2024-06-28 02:27:40,259 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 405 predicate places. [2024-06-28 02:27:40,260 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 384 transitions, 3755 flow [2024-06-28 02:27:40,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:40,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:40,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:40,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 02:27:40,260 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:40,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:40,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2037035782, now seen corresponding path program 3 times [2024-06-28 02:27:40,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:40,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119040235] [2024-06-28 02:27:40,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:40,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:41,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:41,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:41,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119040235] [2024-06-28 02:27:41,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119040235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:41,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:41,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:27:41,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789494113] [2024-06-28 02:27:41,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:41,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:27:41,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:41,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:27:41,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:27:41,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:41,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 384 transitions, 3755 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:41,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:41,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:41,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:42,484 INFO L124 PetriNetUnfolderBase]: 1192/2147 cut-off events. [2024-06-28 02:27:42,484 INFO L125 PetriNetUnfolderBase]: For 91418/91418 co-relation queries the response was YES. [2024-06-28 02:27:42,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10944 conditions, 2147 events. 1192/2147 cut-off events. For 91418/91418 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 13011 event pairs, 286 based on Foata normal form. 2/2149 useless extension candidates. Maximal degree in co-relation 10748. Up to 2018 conditions per place. [2024-06-28 02:27:42,513 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 371 selfloop transitions, 34 changer transitions 0/407 dead transitions. [2024-06-28 02:27:42,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 407 transitions, 4641 flow [2024-06-28 02:27:42,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:27:42,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:27:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 02:27:42,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-28 02:27:42,514 INFO L175 Difference]: Start difference. First operand has 436 places, 384 transitions, 3755 flow. Second operand 12 states and 125 transitions. [2024-06-28 02:27:42,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 407 transitions, 4641 flow [2024-06-28 02:27:43,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 407 transitions, 4554 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 02:27:43,079 INFO L231 Difference]: Finished difference. Result has 437 places, 385 transitions, 3758 flow [2024-06-28 02:27:43,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3668, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3758, PETRI_PLACES=437, PETRI_TRANSITIONS=385} [2024-06-28 02:27:43,079 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 406 predicate places. [2024-06-28 02:27:43,079 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 385 transitions, 3758 flow [2024-06-28 02:27:43,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:43,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:43,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:43,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 02:27:43,080 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:43,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:43,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2041936882, now seen corresponding path program 4 times [2024-06-28 02:27:43,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:43,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005901214] [2024-06-28 02:27:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:43,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:44,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:44,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005901214] [2024-06-28 02:27:44,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005901214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:44,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:44,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:27:44,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022631255] [2024-06-28 02:27:44,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:44,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:27:44,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:44,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:27:44,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:27:44,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:44,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 385 transitions, 3758 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:44,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:44,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:44,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:45,427 INFO L124 PetriNetUnfolderBase]: 1196/2155 cut-off events. [2024-06-28 02:27:45,427 INFO L125 PetriNetUnfolderBase]: For 93079/93079 co-relation queries the response was YES. [2024-06-28 02:27:45,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10978 conditions, 2155 events. 1196/2155 cut-off events. For 93079/93079 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 13088 event pairs, 282 based on Foata normal form. 2/2157 useless extension candidates. Maximal degree in co-relation 10782. Up to 2010 conditions per place. [2024-06-28 02:27:45,450 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 372 selfloop transitions, 34 changer transitions 0/408 dead transitions. [2024-06-28 02:27:45,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 408 transitions, 4646 flow [2024-06-28 02:27:45,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:27:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:27:45,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-28 02:27:45,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-28 02:27:45,452 INFO L175 Difference]: Start difference. First operand has 437 places, 385 transitions, 3758 flow. Second operand 12 states and 126 transitions. [2024-06-28 02:27:45,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 408 transitions, 4646 flow [2024-06-28 02:27:46,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 408 transitions, 4566 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 02:27:46,065 INFO L231 Difference]: Finished difference. Result has 439 places, 386 transitions, 3770 flow [2024-06-28 02:27:46,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3678, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3770, PETRI_PLACES=439, PETRI_TRANSITIONS=386} [2024-06-28 02:27:46,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 408 predicate places. [2024-06-28 02:27:46,066 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 386 transitions, 3770 flow [2024-06-28 02:27:46,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:46,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:46,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:46,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 02:27:46,067 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:46,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:46,067 INFO L85 PathProgramCache]: Analyzing trace with hash 2129695674, now seen corresponding path program 5 times [2024-06-28 02:27:46,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:46,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075432907] [2024-06-28 02:27:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:46,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:47,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:47,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075432907] [2024-06-28 02:27:47,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075432907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:47,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:47,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:27:47,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698642486] [2024-06-28 02:27:47,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:47,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:27:47,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:47,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:27:47,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:27:47,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:47,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 386 transitions, 3770 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:47,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:47,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:47,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:48,178 INFO L124 PetriNetUnfolderBase]: 1200/2163 cut-off events. [2024-06-28 02:27:48,179 INFO L125 PetriNetUnfolderBase]: For 94787/94787 co-relation queries the response was YES. [2024-06-28 02:27:48,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11031 conditions, 2163 events. 1200/2163 cut-off events. For 94787/94787 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 13131 event pairs, 276 based on Foata normal form. 2/2165 useless extension candidates. Maximal degree in co-relation 10834. Up to 1994 conditions per place. [2024-06-28 02:27:48,210 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 372 selfloop transitions, 35 changer transitions 0/409 dead transitions. [2024-06-28 02:27:48,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 409 transitions, 4660 flow [2024-06-28 02:27:48,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:27:48,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:27:48,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 02:27:48,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-28 02:27:48,212 INFO L175 Difference]: Start difference. First operand has 439 places, 386 transitions, 3770 flow. Second operand 12 states and 127 transitions. [2024-06-28 02:27:48,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 409 transitions, 4660 flow [2024-06-28 02:27:48,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 409 transitions, 4578 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 02:27:48,955 INFO L231 Difference]: Finished difference. Result has 441 places, 387 transitions, 3784 flow [2024-06-28 02:27:48,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3688, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3784, PETRI_PLACES=441, PETRI_TRANSITIONS=387} [2024-06-28 02:27:48,955 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 410 predicate places. [2024-06-28 02:27:48,955 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 387 transitions, 3784 flow [2024-06-28 02:27:48,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:48,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:48,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:48,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 02:27:48,956 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:48,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:48,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1756708334, now seen corresponding path program 6 times [2024-06-28 02:27:48,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:48,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824106148] [2024-06-28 02:27:48,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:48,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:50,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:50,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824106148] [2024-06-28 02:27:50,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824106148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:50,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:50,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:50,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491322472] [2024-06-28 02:27:50,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:50,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:50,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:50,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:50,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:50,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:50,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 387 transitions, 3784 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:50,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:50,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:50,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:51,475 INFO L124 PetriNetUnfolderBase]: 1204/2171 cut-off events. [2024-06-28 02:27:51,475 INFO L125 PetriNetUnfolderBase]: For 96338/96338 co-relation queries the response was YES. [2024-06-28 02:27:51,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11084 conditions, 2171 events. 1204/2171 cut-off events. For 96338/96338 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 13211 event pairs, 257 based on Foata normal form. 2/2173 useless extension candidates. Maximal degree in co-relation 10886. Up to 2008 conditions per place. [2024-06-28 02:27:51,499 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 378 selfloop transitions, 31 changer transitions 0/411 dead transitions. [2024-06-28 02:27:51,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 411 transitions, 4680 flow [2024-06-28 02:27:51,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:27:51,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:27:51,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-28 02:27:51,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-28 02:27:51,500 INFO L175 Difference]: Start difference. First operand has 441 places, 387 transitions, 3784 flow. Second operand 12 states and 120 transitions. [2024-06-28 02:27:51,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 411 transitions, 4680 flow [2024-06-28 02:27:52,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 411 transitions, 4594 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 02:27:52,186 INFO L231 Difference]: Finished difference. Result has 443 places, 388 transitions, 3788 flow [2024-06-28 02:27:52,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3698, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3788, PETRI_PLACES=443, PETRI_TRANSITIONS=388} [2024-06-28 02:27:52,186 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 412 predicate places. [2024-06-28 02:27:52,186 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 388 transitions, 3788 flow [2024-06-28 02:27:52,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:52,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:52,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:52,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 02:27:52,187 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:52,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:52,187 INFO L85 PathProgramCache]: Analyzing trace with hash 395513042, now seen corresponding path program 1 times [2024-06-28 02:27:52,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:52,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108130071] [2024-06-28 02:27:52,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:52,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:53,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:53,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108130071] [2024-06-28 02:27:53,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108130071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:53,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:53,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:53,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197902790] [2024-06-28 02:27:53,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:53,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:53,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:53,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:53,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:53,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:53,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 388 transitions, 3788 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:53,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:53,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:53,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:54,464 INFO L124 PetriNetUnfolderBase]: 1220/2207 cut-off events. [2024-06-28 02:27:54,464 INFO L125 PetriNetUnfolderBase]: For 149762/149762 co-relation queries the response was YES. [2024-06-28 02:27:54,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11201 conditions, 2207 events. 1220/2207 cut-off events. For 149762/149762 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 13456 event pairs, 295 based on Foata normal form. 10/2217 useless extension candidates. Maximal degree in co-relation 11002. Up to 2024 conditions per place. [2024-06-28 02:27:54,494 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 367 selfloop transitions, 31 changer transitions 16/416 dead transitions. [2024-06-28 02:27:54,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 416 transitions, 4722 flow [2024-06-28 02:27:54,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:27:54,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:27:54,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 139 transitions. [2024-06-28 02:27:54,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33413461538461536 [2024-06-28 02:27:54,495 INFO L175 Difference]: Start difference. First operand has 443 places, 388 transitions, 3788 flow. Second operand 13 states and 139 transitions. [2024-06-28 02:27:54,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 416 transitions, 4722 flow [2024-06-28 02:27:55,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 416 transitions, 4642 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 02:27:55,221 INFO L231 Difference]: Finished difference. Result has 446 places, 382 transitions, 3708 flow [2024-06-28 02:27:55,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3708, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3708, PETRI_PLACES=446, PETRI_TRANSITIONS=382} [2024-06-28 02:27:55,221 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-28 02:27:55,221 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 382 transitions, 3708 flow [2024-06-28 02:27:55,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:55,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:55,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:55,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 02:27:55,222 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:55,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:55,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1959598004, now seen corresponding path program 7 times [2024-06-28 02:27:55,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:55,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329799229] [2024-06-28 02:27:55,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:55,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:56,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:56,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329799229] [2024-06-28 02:27:56,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329799229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:56,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:56,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:27:56,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448036504] [2024-06-28 02:27:56,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:56,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:27:56,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:56,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:27:56,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:27:56,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:56,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 382 transitions, 3708 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:56,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:56,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:56,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:57,386 INFO L124 PetriNetUnfolderBase]: 1188/2146 cut-off events. [2024-06-28 02:27:57,386 INFO L125 PetriNetUnfolderBase]: For 99270/99270 co-relation queries the response was YES. [2024-06-28 02:27:57,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10925 conditions, 2146 events. 1188/2146 cut-off events. For 99270/99270 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 13017 event pairs, 263 based on Foata normal form. 2/2148 useless extension candidates. Maximal degree in co-relation 10725. Up to 2026 conditions per place. [2024-06-28 02:27:57,415 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 371 selfloop transitions, 32 changer transitions 0/405 dead transitions. [2024-06-28 02:27:57,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 405 transitions, 4602 flow [2024-06-28 02:27:57,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:27:57,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:27:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 02:27:57,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 02:27:57,416 INFO L175 Difference]: Start difference. First operand has 446 places, 382 transitions, 3708 flow. Second operand 12 states and 128 transitions. [2024-06-28 02:27:57,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 405 transitions, 4602 flow [2024-06-28 02:27:58,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 405 transitions, 4528 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 02:27:58,169 INFO L231 Difference]: Finished difference. Result has 440 places, 383 transitions, 3728 flow [2024-06-28 02:27:58,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3636, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3728, PETRI_PLACES=440, PETRI_TRANSITIONS=383} [2024-06-28 02:27:58,170 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 409 predicate places. [2024-06-28 02:27:58,170 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 383 transitions, 3728 flow [2024-06-28 02:27:58,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:58,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:58,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:58,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 02:27:58,170 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:58,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:58,171 INFO L85 PathProgramCache]: Analyzing trace with hash 230545090, now seen corresponding path program 8 times [2024-06-28 02:27:58,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:58,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778660617] [2024-06-28 02:27:58,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:58,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:59,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:59,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778660617] [2024-06-28 02:27:59,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778660617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:59,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:59,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:27:59,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339249074] [2024-06-28 02:27:59,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:59,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:27:59,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:59,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:27:59,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:27:59,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:27:59,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 383 transitions, 3728 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:59,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:59,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:27:59,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:00,247 INFO L124 PetriNetUnfolderBase]: 1192/2154 cut-off events. [2024-06-28 02:28:00,248 INFO L125 PetriNetUnfolderBase]: For 97839/97839 co-relation queries the response was YES. [2024-06-28 02:28:00,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10968 conditions, 2154 events. 1192/2154 cut-off events. For 97839/97839 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 13133 event pairs, 263 based on Foata normal form. 2/2156 useless extension candidates. Maximal degree in co-relation 10770. Up to 2034 conditions per place. [2024-06-28 02:28:00,270 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 373 selfloop transitions, 31 changer transitions 0/406 dead transitions. [2024-06-28 02:28:00,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 406 transitions, 4622 flow [2024-06-28 02:28:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:00,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:00,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 02:28:00,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-28 02:28:00,271 INFO L175 Difference]: Start difference. First operand has 440 places, 383 transitions, 3728 flow. Second operand 12 states and 127 transitions. [2024-06-28 02:28:00,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 406 transitions, 4622 flow [2024-06-28 02:28:00,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 406 transitions, 4525 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 02:28:00,957 INFO L231 Difference]: Finished difference. Result has 442 places, 384 transitions, 3723 flow [2024-06-28 02:28:00,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3631, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3723, PETRI_PLACES=442, PETRI_TRANSITIONS=384} [2024-06-28 02:28:00,957 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 411 predicate places. [2024-06-28 02:28:00,957 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 384 transitions, 3723 flow [2024-06-28 02:28:00,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:00,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:00,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:00,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 02:28:00,958 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:00,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:00,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1959448274, now seen corresponding path program 9 times [2024-06-28 02:28:00,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:00,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852573022] [2024-06-28 02:28:00,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:00,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:02,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:02,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852573022] [2024-06-28 02:28:02,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852573022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:02,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:02,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:02,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009736847] [2024-06-28 02:28:02,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:02,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:02,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:02,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:02,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:02,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:02,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 384 transitions, 3723 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:02,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:02,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:02,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:02,974 INFO L124 PetriNetUnfolderBase]: 1196/2162 cut-off events. [2024-06-28 02:28:02,974 INFO L125 PetriNetUnfolderBase]: For 99627/99627 co-relation queries the response was YES. [2024-06-28 02:28:02,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10997 conditions, 2162 events. 1196/2162 cut-off events. For 99627/99627 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 13172 event pairs, 261 based on Foata normal form. 2/2164 useless extension candidates. Maximal degree in co-relation 10798. Up to 2028 conditions per place. [2024-06-28 02:28:03,003 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 373 selfloop transitions, 32 changer transitions 0/407 dead transitions. [2024-06-28 02:28:03,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 407 transitions, 4619 flow [2024-06-28 02:28:03,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:03,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:03,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 02:28:03,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 02:28:03,004 INFO L175 Difference]: Start difference. First operand has 442 places, 384 transitions, 3723 flow. Second operand 12 states and 128 transitions. [2024-06-28 02:28:03,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 407 transitions, 4619 flow [2024-06-28 02:28:03,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 407 transitions, 4537 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-28 02:28:03,748 INFO L231 Difference]: Finished difference. Result has 444 places, 385 transitions, 3737 flow [2024-06-28 02:28:03,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3641, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3737, PETRI_PLACES=444, PETRI_TRANSITIONS=385} [2024-06-28 02:28:03,748 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 413 predicate places. [2024-06-28 02:28:03,748 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 385 transitions, 3737 flow [2024-06-28 02:28:03,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:03,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:03,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:03,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 02:28:03,749 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:03,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:03,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1955873354, now seen corresponding path program 10 times [2024-06-28 02:28:03,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:03,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108887385] [2024-06-28 02:28:03,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:03,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:05,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:05,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108887385] [2024-06-28 02:28:05,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108887385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:05,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:05,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:05,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632983534] [2024-06-28 02:28:05,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:05,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:05,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:05,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:05,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:05,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:05,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 385 transitions, 3737 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:05,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:05,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:05,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:05,743 INFO L124 PetriNetUnfolderBase]: 1200/2170 cut-off events. [2024-06-28 02:28:05,743 INFO L125 PetriNetUnfolderBase]: For 101439/101439 co-relation queries the response was YES. [2024-06-28 02:28:05,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11052 conditions, 2170 events. 1200/2170 cut-off events. For 101439/101439 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 13233 event pairs, 259 based on Foata normal form. 2/2172 useless extension candidates. Maximal degree in co-relation 10852. Up to 2014 conditions per place. [2024-06-28 02:28:05,773 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 373 selfloop transitions, 33 changer transitions 0/408 dead transitions. [2024-06-28 02:28:05,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 408 transitions, 4635 flow [2024-06-28 02:28:05,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:05,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 02:28:05,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-28 02:28:05,775 INFO L175 Difference]: Start difference. First operand has 444 places, 385 transitions, 3737 flow. Second operand 12 states and 129 transitions. [2024-06-28 02:28:05,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 408 transitions, 4635 flow [2024-06-28 02:28:06,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 408 transitions, 4549 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 02:28:06,603 INFO L231 Difference]: Finished difference. Result has 446 places, 386 transitions, 3751 flow [2024-06-28 02:28:06,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3651, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3751, PETRI_PLACES=446, PETRI_TRANSITIONS=386} [2024-06-28 02:28:06,603 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-28 02:28:06,603 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 386 transitions, 3751 flow [2024-06-28 02:28:06,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:06,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:06,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:06,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 02:28:06,604 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:06,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:06,604 INFO L85 PathProgramCache]: Analyzing trace with hash 155007404, now seen corresponding path program 11 times [2024-06-28 02:28:06,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:06,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541182872] [2024-06-28 02:28:06,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:06,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:07,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:07,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541182872] [2024-06-28 02:28:07,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541182872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:07,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:07,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:07,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213099329] [2024-06-28 02:28:07,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:07,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:07,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:07,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:07,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:07,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:07,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 386 transitions, 3751 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:07,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:07,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:07,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:08,538 INFO L124 PetriNetUnfolderBase]: 1204/2178 cut-off events. [2024-06-28 02:28:08,538 INFO L125 PetriNetUnfolderBase]: For 103324/103324 co-relation queries the response was YES. [2024-06-28 02:28:08,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11107 conditions, 2178 events. 1204/2178 cut-off events. For 103324/103324 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 13313 event pairs, 261 based on Foata normal form. 2/2180 useless extension candidates. Maximal degree in co-relation 10906. Up to 2054 conditions per place. [2024-06-28 02:28:08,569 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 380 selfloop transitions, 28 changer transitions 0/410 dead transitions. [2024-06-28 02:28:08,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 410 transitions, 4657 flow [2024-06-28 02:28:08,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:08,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:08,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 02:28:08,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-28 02:28:08,570 INFO L175 Difference]: Start difference. First operand has 446 places, 386 transitions, 3751 flow. Second operand 12 states and 125 transitions. [2024-06-28 02:28:08,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 410 transitions, 4657 flow [2024-06-28 02:28:09,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 410 transitions, 4567 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-28 02:28:09,390 INFO L231 Difference]: Finished difference. Result has 448 places, 387 transitions, 3753 flow [2024-06-28 02:28:09,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3661, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3753, PETRI_PLACES=448, PETRI_TRANSITIONS=387} [2024-06-28 02:28:09,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 417 predicate places. [2024-06-28 02:28:09,390 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 387 transitions, 3753 flow [2024-06-28 02:28:09,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:09,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:09,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:09,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 02:28:09,392 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:09,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:09,392 INFO L85 PathProgramCache]: Analyzing trace with hash -484818230, now seen corresponding path program 2 times [2024-06-28 02:28:09,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:09,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984252296] [2024-06-28 02:28:09,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:09,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:10,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:10,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:10,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984252296] [2024-06-28 02:28:10,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984252296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:10,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:10,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:10,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971431414] [2024-06-28 02:28:10,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:10,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:10,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:10,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:10,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:10,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:10,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 387 transitions, 3753 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:10,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:10,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:10,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:11,677 INFO L124 PetriNetUnfolderBase]: 1220/2214 cut-off events. [2024-06-28 02:28:11,678 INFO L125 PetriNetUnfolderBase]: For 160316/160316 co-relation queries the response was YES. [2024-06-28 02:28:11,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11200 conditions, 2214 events. 1220/2214 cut-off events. For 160316/160316 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 13562 event pairs, 279 based on Foata normal form. 10/2224 useless extension candidates. Maximal degree in co-relation 10998. Up to 2050 conditions per place. [2024-06-28 02:28:11,708 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 372 selfloop transitions, 30 changer transitions 11/415 dead transitions. [2024-06-28 02:28:11,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 415 transitions, 4687 flow [2024-06-28 02:28:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:28:11,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:28:11,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 140 transitions. [2024-06-28 02:28:11,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33653846153846156 [2024-06-28 02:28:11,711 INFO L175 Difference]: Start difference. First operand has 448 places, 387 transitions, 3753 flow. Second operand 13 states and 140 transitions. [2024-06-28 02:28:11,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 415 transitions, 4687 flow [2024-06-28 02:28:12,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 415 transitions, 4605 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-28 02:28:12,563 INFO L231 Difference]: Finished difference. Result has 451 places, 384 transitions, 3701 flow [2024-06-28 02:28:12,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3671, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3701, PETRI_PLACES=451, PETRI_TRANSITIONS=384} [2024-06-28 02:28:12,563 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 420 predicate places. [2024-06-28 02:28:12,563 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 384 transitions, 3701 flow [2024-06-28 02:28:12,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:12,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:12,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:12,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 02:28:12,564 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:12,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:12,565 INFO L85 PathProgramCache]: Analyzing trace with hash 187912476, now seen corresponding path program 12 times [2024-06-28 02:28:12,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:12,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717527567] [2024-06-28 02:28:12,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:12,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:13,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:13,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:13,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717527567] [2024-06-28 02:28:13,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717527567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:13,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:13,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:13,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197392612] [2024-06-28 02:28:13,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:13,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:13,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:13,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:13,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:14,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:14,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 384 transitions, 3701 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:14,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:14,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:14,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:14,727 INFO L124 PetriNetUnfolderBase]: 1198/2172 cut-off events. [2024-06-28 02:28:14,728 INFO L125 PetriNetUnfolderBase]: For 106689/106689 co-relation queries the response was YES. [2024-06-28 02:28:14,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11025 conditions, 2172 events. 1198/2172 cut-off events. For 106689/106689 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 13285 event pairs, 249 based on Foata normal form. 2/2174 useless extension candidates. Maximal degree in co-relation 10822. Up to 1905 conditions per place. [2024-06-28 02:28:14,753 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 347 selfloop transitions, 59 changer transitions 0/408 dead transitions. [2024-06-28 02:28:14,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 408 transitions, 4615 flow [2024-06-28 02:28:14,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:14,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:14,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 02:28:14,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-28 02:28:14,754 INFO L175 Difference]: Start difference. First operand has 451 places, 384 transitions, 3701 flow. Second operand 12 states and 133 transitions. [2024-06-28 02:28:14,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 408 transitions, 4615 flow [2024-06-28 02:28:15,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 408 transitions, 4525 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 02:28:15,707 INFO L231 Difference]: Finished difference. Result has 448 places, 385 transitions, 3767 flow [2024-06-28 02:28:15,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3611, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3767, PETRI_PLACES=448, PETRI_TRANSITIONS=385} [2024-06-28 02:28:15,708 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 417 predicate places. [2024-06-28 02:28:15,708 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 385 transitions, 3767 flow [2024-06-28 02:28:15,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:15,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:15,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:15,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 02:28:15,709 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:15,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:15,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1963515416, now seen corresponding path program 13 times [2024-06-28 02:28:15,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:15,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47438612] [2024-06-28 02:28:15,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:15,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:17,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:17,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47438612] [2024-06-28 02:28:17,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47438612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:17,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:17,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:17,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833639718] [2024-06-28 02:28:17,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:17,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:17,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:17,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:17,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:17,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:17,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 385 transitions, 3767 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:17,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:17,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:17,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:17,862 INFO L124 PetriNetUnfolderBase]: 1202/2180 cut-off events. [2024-06-28 02:28:17,863 INFO L125 PetriNetUnfolderBase]: For 107335/107335 co-relation queries the response was YES. [2024-06-28 02:28:17,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11149 conditions, 2180 events. 1202/2180 cut-off events. For 107335/107335 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 13355 event pairs, 249 based on Foata normal form. 2/2182 useless extension candidates. Maximal degree in co-relation 10946. Up to 1913 conditions per place. [2024-06-28 02:28:17,893 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 349 selfloop transitions, 58 changer transitions 0/409 dead transitions. [2024-06-28 02:28:17,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 409 transitions, 4683 flow [2024-06-28 02:28:17,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:17,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:17,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 02:28:17,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:28:17,894 INFO L175 Difference]: Start difference. First operand has 448 places, 385 transitions, 3767 flow. Second operand 12 states and 132 transitions. [2024-06-28 02:28:17,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 409 transitions, 4683 flow [2024-06-28 02:28:18,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 409 transitions, 4533 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-28 02:28:18,830 INFO L231 Difference]: Finished difference. Result has 449 places, 386 transitions, 3773 flow [2024-06-28 02:28:18,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3617, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3773, PETRI_PLACES=449, PETRI_TRANSITIONS=386} [2024-06-28 02:28:18,831 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 418 predicate places. [2024-06-28 02:28:18,831 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 386 transitions, 3773 flow [2024-06-28 02:28:18,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:18,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:18,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:18,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 02:28:18,831 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:18,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:18,832 INFO L85 PathProgramCache]: Analyzing trace with hash 187762746, now seen corresponding path program 14 times [2024-06-28 02:28:18,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:18,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782225347] [2024-06-28 02:28:18,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:18,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:20,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:20,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782225347] [2024-06-28 02:28:20,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782225347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:20,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:20,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:20,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966020112] [2024-06-28 02:28:20,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:20,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:20,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:20,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:20,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:20,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:20,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 386 transitions, 3773 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:20,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:20,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:20,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:21,489 INFO L124 PetriNetUnfolderBase]: 1206/2188 cut-off events. [2024-06-28 02:28:21,490 INFO L125 PetriNetUnfolderBase]: For 107555/107555 co-relation queries the response was YES. [2024-06-28 02:28:21,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11181 conditions, 2188 events. 1206/2188 cut-off events. For 107555/107555 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 13447 event pairs, 247 based on Foata normal form. 2/2190 useless extension candidates. Maximal degree in co-relation 10978. Up to 1905 conditions per place. [2024-06-28 02:28:21,517 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 350 selfloop transitions, 58 changer transitions 0/410 dead transitions. [2024-06-28 02:28:21,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 410 transitions, 4691 flow [2024-06-28 02:28:21,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:21,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 02:28:21,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-28 02:28:21,518 INFO L175 Difference]: Start difference. First operand has 449 places, 386 transitions, 3773 flow. Second operand 12 states and 133 transitions. [2024-06-28 02:28:21,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 410 transitions, 4691 flow [2024-06-28 02:28:22,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 410 transitions, 4545 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 02:28:22,340 INFO L231 Difference]: Finished difference. Result has 451 places, 387 transitions, 3785 flow [2024-06-28 02:28:22,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3627, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3785, PETRI_PLACES=451, PETRI_TRANSITIONS=387} [2024-06-28 02:28:22,340 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 420 predicate places. [2024-06-28 02:28:22,340 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 387 transitions, 3785 flow [2024-06-28 02:28:22,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:22,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:22,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:22,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 02:28:22,341 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:22,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:22,341 INFO L85 PathProgramCache]: Analyzing trace with hash 184187826, now seen corresponding path program 15 times [2024-06-28 02:28:22,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:22,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358235937] [2024-06-28 02:28:22,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:22,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:23,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:23,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:23,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358235937] [2024-06-28 02:28:23,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358235937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:23,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:23,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:23,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796351559] [2024-06-28 02:28:23,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:23,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:23,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:23,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:23,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:24,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:24,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 387 transitions, 3785 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:24,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:24,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:24,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:24,784 INFO L124 PetriNetUnfolderBase]: 1210/2196 cut-off events. [2024-06-28 02:28:24,784 INFO L125 PetriNetUnfolderBase]: For 109601/109601 co-relation queries the response was YES. [2024-06-28 02:28:24,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11232 conditions, 2196 events. 1210/2196 cut-off events. For 109601/109601 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 13517 event pairs, 249 based on Foata normal form. 2/2198 useless extension candidates. Maximal degree in co-relation 11028. Up to 1861 conditions per place. [2024-06-28 02:28:24,817 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 348 selfloop transitions, 61 changer transitions 0/411 dead transitions. [2024-06-28 02:28:24,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 411 transitions, 4705 flow [2024-06-28 02:28:24,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:24,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:24,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 02:28:24,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:28:24,819 INFO L175 Difference]: Start difference. First operand has 451 places, 387 transitions, 3785 flow. Second operand 12 states and 132 transitions. [2024-06-28 02:28:24,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 411 transitions, 4705 flow [2024-06-28 02:28:25,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 411 transitions, 4557 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 02:28:25,627 INFO L231 Difference]: Finished difference. Result has 453 places, 388 transitions, 3803 flow [2024-06-28 02:28:25,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3637, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3803, PETRI_PLACES=453, PETRI_TRANSITIONS=388} [2024-06-28 02:28:25,627 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 422 predicate places. [2024-06-28 02:28:25,628 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 388 transitions, 3803 flow [2024-06-28 02:28:25,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:25,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:25,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:25,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 02:28:25,628 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:25,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:25,628 INFO L85 PathProgramCache]: Analyzing trace with hash 332012752, now seen corresponding path program 3 times [2024-06-28 02:28:25,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:25,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902621139] [2024-06-28 02:28:25,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:25,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:27,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:27,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902621139] [2024-06-28 02:28:27,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902621139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:27,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:27,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:27,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126619067] [2024-06-28 02:28:27,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:27,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:27,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:27,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:27,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:27,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:27,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 388 transitions, 3803 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:27,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:27,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:27,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:27,970 INFO L124 PetriNetUnfolderBase]: 1226/2232 cut-off events. [2024-06-28 02:28:27,971 INFO L125 PetriNetUnfolderBase]: For 169365/169365 co-relation queries the response was YES. [2024-06-28 02:28:27,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11335 conditions, 2232 events. 1226/2232 cut-off events. For 169365/169365 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13719 event pairs, 257 based on Foata normal form. 10/2242 useless extension candidates. Maximal degree in co-relation 11130. Up to 1911 conditions per place. [2024-06-28 02:28:28,001 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 344 selfloop transitions, 55 changer transitions 16/417 dead transitions. [2024-06-28 02:28:28,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 417 transitions, 4747 flow [2024-06-28 02:28:28,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:28:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:28:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-28 02:28:28,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-28 02:28:28,002 INFO L175 Difference]: Start difference. First operand has 453 places, 388 transitions, 3803 flow. Second operand 13 states and 146 transitions. [2024-06-28 02:28:28,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 417 transitions, 4747 flow [2024-06-28 02:28:28,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 417 transitions, 4591 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 02:28:28,714 INFO L231 Difference]: Finished difference. Result has 456 places, 382 transitions, 3705 flow [2024-06-28 02:28:28,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3647, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3705, PETRI_PLACES=456, PETRI_TRANSITIONS=382} [2024-06-28 02:28:28,714 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 425 predicate places. [2024-06-28 02:28:28,714 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 382 transitions, 3705 flow [2024-06-28 02:28:28,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:28,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:28,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:28,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 02:28:28,715 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:28,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:28,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1384022300, now seen corresponding path program 16 times [2024-06-28 02:28:28,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:28,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349933267] [2024-06-28 02:28:28,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:28,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:30,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:30,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:30,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349933267] [2024-06-28 02:28:30,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349933267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:30,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:30,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:30,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718885222] [2024-06-28 02:28:30,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:30,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:30,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:30,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:30,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:30,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:30,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 382 transitions, 3705 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:30,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:30,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:30,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:30,736 INFO L124 PetriNetUnfolderBase]: 1194/2172 cut-off events. [2024-06-28 02:28:30,736 INFO L125 PetriNetUnfolderBase]: For 112663/112663 co-relation queries the response was YES. [2024-06-28 02:28:30,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11064 conditions, 2172 events. 1194/2172 cut-off events. For 112663/112663 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 13347 event pairs, 255 based on Foata normal form. 2/2174 useless extension candidates. Maximal degree in co-relation 10858. Up to 1905 conditions per place. [2024-06-28 02:28:30,766 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 342 selfloop transitions, 64 changer transitions 0/408 dead transitions. [2024-06-28 02:28:30,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 408 transitions, 4639 flow [2024-06-28 02:28:30,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:30,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:30,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 02:28:30,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-28 02:28:30,767 INFO L175 Difference]: Start difference. First operand has 456 places, 382 transitions, 3705 flow. Second operand 12 states and 133 transitions. [2024-06-28 02:28:30,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 408 transitions, 4639 flow [2024-06-28 02:28:31,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 408 transitions, 4513 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 02:28:31,492 INFO L231 Difference]: Finished difference. Result has 451 places, 383 transitions, 3753 flow [2024-06-28 02:28:31,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3581, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3753, PETRI_PLACES=451, PETRI_TRANSITIONS=383} [2024-06-28 02:28:31,492 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 420 predicate places. [2024-06-28 02:28:31,492 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 383 transitions, 3753 flow [2024-06-28 02:28:31,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:31,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:31,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:31,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 02:28:31,493 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:31,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:31,493 INFO L85 PathProgramCache]: Analyzing trace with hash -937783966, now seen corresponding path program 17 times [2024-06-28 02:28:31,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:31,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265456990] [2024-06-28 02:28:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:31,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:33,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:33,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:33,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265456990] [2024-06-28 02:28:33,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265456990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:33,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:33,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:33,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169715188] [2024-06-28 02:28:33,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:33,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:33,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:33,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:33,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:33,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:33,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 383 transitions, 3753 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:33,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:33,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:33,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:33,938 INFO L124 PetriNetUnfolderBase]: 1198/2180 cut-off events. [2024-06-28 02:28:33,938 INFO L125 PetriNetUnfolderBase]: For 111535/111535 co-relation queries the response was YES. [2024-06-28 02:28:33,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11173 conditions, 2180 events. 1198/2180 cut-off events. For 111535/111535 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 13425 event pairs, 251 based on Foata normal form. 2/2182 useless extension candidates. Maximal degree in co-relation 10968. Up to 1878 conditions per place. [2024-06-28 02:28:33,967 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 337 selfloop transitions, 71 changer transitions 0/410 dead transitions. [2024-06-28 02:28:33,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 410 transitions, 4697 flow [2024-06-28 02:28:33,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:33,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 02:28:33,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-28 02:28:33,969 INFO L175 Difference]: Start difference. First operand has 451 places, 383 transitions, 3753 flow. Second operand 12 states and 135 transitions. [2024-06-28 02:28:33,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 410 transitions, 4697 flow [2024-06-28 02:28:34,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 410 transitions, 4535 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 02:28:34,741 INFO L231 Difference]: Finished difference. Result has 453 places, 384 transitions, 3779 flow [2024-06-28 02:28:34,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3591, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3779, PETRI_PLACES=453, PETRI_TRANSITIONS=384} [2024-06-28 02:28:34,741 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 422 predicate places. [2024-06-28 02:28:34,741 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 384 transitions, 3779 flow [2024-06-28 02:28:34,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:34,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:34,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:34,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 02:28:34,742 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:34,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:34,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1184720510, now seen corresponding path program 18 times [2024-06-28 02:28:34,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:34,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955603048] [2024-06-28 02:28:34,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:34,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:36,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:36,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:36,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955603048] [2024-06-28 02:28:36,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955603048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:36,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:36,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:36,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839143556] [2024-06-28 02:28:36,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:36,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:36,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:36,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:36,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:36,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:36,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 384 transitions, 3779 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:36,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:36,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:36,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:37,409 INFO L124 PetriNetUnfolderBase]: 1202/2188 cut-off events. [2024-06-28 02:28:37,410 INFO L125 PetriNetUnfolderBase]: For 113381/113381 co-relation queries the response was YES. [2024-06-28 02:28:37,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11242 conditions, 2188 events. 1202/2188 cut-off events. For 113381/113381 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 13470 event pairs, 257 based on Foata normal form. 2/2190 useless extension candidates. Maximal degree in co-relation 11036. Up to 1921 conditions per place. [2024-06-28 02:28:37,434 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 348 selfloop transitions, 59 changer transitions 0/409 dead transitions. [2024-06-28 02:28:37,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 409 transitions, 4711 flow [2024-06-28 02:28:37,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:37,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:37,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 02:28:37,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-28 02:28:37,435 INFO L175 Difference]: Start difference. First operand has 453 places, 384 transitions, 3779 flow. Second operand 12 states and 133 transitions. [2024-06-28 02:28:37,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 409 transitions, 4711 flow [2024-06-28 02:28:38,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 409 transitions, 4533 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-28 02:28:38,238 INFO L231 Difference]: Finished difference. Result has 455 places, 385 transitions, 3767 flow [2024-06-28 02:28:38,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3601, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3767, PETRI_PLACES=455, PETRI_TRANSITIONS=385} [2024-06-28 02:28:38,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 424 predicate places. [2024-06-28 02:28:38,239 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 385 transitions, 3767 flow [2024-06-28 02:28:38,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:38,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:38,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:38,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 02:28:38,239 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:38,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:38,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1144442986, now seen corresponding path program 19 times [2024-06-28 02:28:38,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:38,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237096445] [2024-06-28 02:28:38,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:38,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:39,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:39,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:39,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237096445] [2024-06-28 02:28:39,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237096445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:39,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:39,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:39,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861068236] [2024-06-28 02:28:39,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:39,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:39,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:39,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:39,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:39,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:39,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 385 transitions, 3767 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:39,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:39,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:39,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:40,484 INFO L124 PetriNetUnfolderBase]: 1206/2196 cut-off events. [2024-06-28 02:28:40,485 INFO L125 PetriNetUnfolderBase]: For 115249/115249 co-relation queries the response was YES. [2024-06-28 02:28:40,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11251 conditions, 2196 events. 1206/2196 cut-off events. For 115249/115249 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 13546 event pairs, 259 based on Foata normal form. 2/2198 useless extension candidates. Maximal degree in co-relation 11044. Up to 1929 conditions per place. [2024-06-28 02:28:40,516 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 350 selfloop transitions, 58 changer transitions 0/410 dead transitions. [2024-06-28 02:28:40,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 410 transitions, 4701 flow [2024-06-28 02:28:40,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:40,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:40,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 02:28:40,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:28:40,517 INFO L175 Difference]: Start difference. First operand has 455 places, 385 transitions, 3767 flow. Second operand 12 states and 132 transitions. [2024-06-28 02:28:40,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 410 transitions, 4701 flow [2024-06-28 02:28:41,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 410 transitions, 4545 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-28 02:28:41,364 INFO L231 Difference]: Finished difference. Result has 457 places, 386 transitions, 3777 flow [2024-06-28 02:28:41,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3611, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3777, PETRI_PLACES=457, PETRI_TRANSITIONS=386} [2024-06-28 02:28:41,364 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 426 predicate places. [2024-06-28 02:28:41,365 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 386 transitions, 3777 flow [2024-06-28 02:28:41,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:41,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:41,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:41,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 02:28:41,365 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:41,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:41,365 INFO L85 PathProgramCache]: Analyzing trace with hash -937507260, now seen corresponding path program 4 times [2024-06-28 02:28:41,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:41,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311579560] [2024-06-28 02:28:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:41,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:42,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:42,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311579560] [2024-06-28 02:28:42,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311579560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:42,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:42,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:28:42,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652367417] [2024-06-28 02:28:42,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:42,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:28:42,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:42,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:28:42,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:28:42,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:42,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 386 transitions, 3777 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:42,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:42,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:42,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:43,508 INFO L124 PetriNetUnfolderBase]: 1247/2284 cut-off events. [2024-06-28 02:28:43,508 INFO L125 PetriNetUnfolderBase]: For 239214/239214 co-relation queries the response was YES. [2024-06-28 02:28:43,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12771 conditions, 2284 events. 1247/2284 cut-off events. For 239214/239214 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 14083 event pairs, 174 based on Foata normal form. 8/2292 useless extension candidates. Maximal degree in co-relation 12563. Up to 1033 conditions per place. [2024-06-28 02:28:43,540 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 192 selfloop transitions, 204 changer transitions 20/418 dead transitions. [2024-06-28 02:28:43,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 418 transitions, 5019 flow [2024-06-28 02:28:43,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:28:43,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:28:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 02:28:43,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 02:28:43,541 INFO L175 Difference]: Start difference. First operand has 457 places, 386 transitions, 3777 flow. Second operand 11 states and 136 transitions. [2024-06-28 02:28:43,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 418 transitions, 5019 flow [2024-06-28 02:28:44,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 418 transitions, 4863 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-28 02:28:44,955 INFO L231 Difference]: Finished difference. Result has 458 places, 372 transitions, 3894 flow [2024-06-28 02:28:44,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3621, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3894, PETRI_PLACES=458, PETRI_TRANSITIONS=372} [2024-06-28 02:28:44,956 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 427 predicate places. [2024-06-28 02:28:44,956 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 372 transitions, 3894 flow [2024-06-28 02:28:44,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:44,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:44,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:44,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 02:28:44,956 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:44,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:44,957 INFO L85 PathProgramCache]: Analyzing trace with hash 986033938, now seen corresponding path program 5 times [2024-06-28 02:28:44,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:44,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732444632] [2024-06-28 02:28:44,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:44,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:46,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:46,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:46,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732444632] [2024-06-28 02:28:46,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732444632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:46,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:46,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:46,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520144] [2024-06-28 02:28:46,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:46,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:46,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:46,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:46,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:46,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:46,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 372 transitions, 3894 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:46,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:46,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:46,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:47,664 INFO L124 PetriNetUnfolderBase]: 1179/2171 cut-off events. [2024-06-28 02:28:47,664 INFO L125 PetriNetUnfolderBase]: For 258485/258485 co-relation queries the response was YES. [2024-06-28 02:28:47,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12704 conditions, 2171 events. 1179/2171 cut-off events. For 258485/258485 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 13322 event pairs, 260 based on Foata normal form. 10/2181 useless extension candidates. Maximal degree in co-relation 12509. Up to 1784 conditions per place. [2024-06-28 02:28:47,694 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 317 selfloop transitions, 75 changer transitions 13/407 dead transitions. [2024-06-28 02:28:47,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 407 transitions, 4848 flow [2024-06-28 02:28:47,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 02:28:47,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 02:28:47,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 159 transitions. [2024-06-28 02:28:47,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3549107142857143 [2024-06-28 02:28:47,695 INFO L175 Difference]: Start difference. First operand has 458 places, 372 transitions, 3894 flow. Second operand 14 states and 159 transitions. [2024-06-28 02:28:47,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 407 transitions, 4848 flow [2024-06-28 02:28:48,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 407 transitions, 4430 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 02:28:48,866 INFO L231 Difference]: Finished difference. Result has 450 places, 366 transitions, 3551 flow [2024-06-28 02:28:48,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3476, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3551, PETRI_PLACES=450, PETRI_TRANSITIONS=366} [2024-06-28 02:28:48,867 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 419 predicate places. [2024-06-28 02:28:48,867 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 366 transitions, 3551 flow [2024-06-28 02:28:48,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:48,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:48,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:48,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 02:28:48,868 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:48,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:48,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1184570780, now seen corresponding path program 20 times [2024-06-28 02:28:48,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:48,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399601719] [2024-06-28 02:28:48,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:48,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:50,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:50,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:50,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399601719] [2024-06-28 02:28:50,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399601719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:50,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:50,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:50,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643729919] [2024-06-28 02:28:50,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:50,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:50,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:50,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:50,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:50,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:50,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 366 transitions, 3551 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:50,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:50,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:50,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:51,106 INFO L124 PetriNetUnfolderBase]: 1123/2059 cut-off events. [2024-06-28 02:28:51,106 INFO L125 PetriNetUnfolderBase]: For 111104/111104 co-relation queries the response was YES. [2024-06-28 02:28:51,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10593 conditions, 2059 events. 1123/2059 cut-off events. For 111104/111104 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 12621 event pairs, 241 based on Foata normal form. 2/2061 useless extension candidates. Maximal degree in co-relation 10402. Up to 1770 conditions per place. [2024-06-28 02:28:51,135 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 330 selfloop transitions, 59 changer transitions 0/391 dead transitions. [2024-06-28 02:28:51,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 391 transitions, 4447 flow [2024-06-28 02:28:51,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:51,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 02:28:51,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:28:51,136 INFO L175 Difference]: Start difference. First operand has 450 places, 366 transitions, 3551 flow. Second operand 12 states and 132 transitions. [2024-06-28 02:28:51,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 391 transitions, 4447 flow [2024-06-28 02:28:51,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 391 transitions, 4285 flow, removed 5 selfloop flow, removed 15 redundant places. [2024-06-28 02:28:51,877 INFO L231 Difference]: Finished difference. Result has 443 places, 367 transitions, 3559 flow [2024-06-28 02:28:51,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3389, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3559, PETRI_PLACES=443, PETRI_TRANSITIONS=367} [2024-06-28 02:28:51,877 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 412 predicate places. [2024-06-28 02:28:51,877 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 367 transitions, 3559 flow [2024-06-28 02:28:51,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:51,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:51,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:51,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 02:28:51,878 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:51,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:51,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1190292636, now seen corresponding path program 6 times [2024-06-28 02:28:51,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:51,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913204796] [2024-06-28 02:28:51,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:51,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:53,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:53,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913204796] [2024-06-28 02:28:53,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913204796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:53,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:53,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:53,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320972940] [2024-06-28 02:28:53,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:53,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:53,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:53,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:53,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:53,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:53,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 367 transitions, 3559 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:53,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:53,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:53,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:54,754 INFO L124 PetriNetUnfolderBase]: 1139/2095 cut-off events. [2024-06-28 02:28:54,754 INFO L125 PetriNetUnfolderBase]: For 169588/169588 co-relation queries the response was YES. [2024-06-28 02:28:54,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10669 conditions, 2095 events. 1139/2095 cut-off events. For 169588/169588 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 12850 event pairs, 249 based on Foata normal form. 10/2105 useless extension candidates. Maximal degree in co-relation 10480. Up to 1784 conditions per place. [2024-06-28 02:28:54,782 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 327 selfloop transitions, 57 changer transitions 11/397 dead transitions. [2024-06-28 02:28:54,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 397 transitions, 4469 flow [2024-06-28 02:28:54,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:28:54,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:28:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-28 02:28:54,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485576923076923 [2024-06-28 02:28:54,783 INFO L175 Difference]: Start difference. First operand has 443 places, 367 transitions, 3559 flow. Second operand 13 states and 145 transitions. [2024-06-28 02:28:54,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 397 transitions, 4469 flow [2024-06-28 02:28:55,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 397 transitions, 4309 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-28 02:28:55,618 INFO L231 Difference]: Finished difference. Result has 446 places, 364 transitions, 3487 flow [2024-06-28 02:28:55,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3399, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3487, PETRI_PLACES=446, PETRI_TRANSITIONS=364} [2024-06-28 02:28:55,619 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-28 02:28:55,619 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 364 transitions, 3487 flow [2024-06-28 02:28:55,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:55,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:55,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:55,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-28 02:28:55,620 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:55,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:55,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1384016720, now seen corresponding path program 21 times [2024-06-28 02:28:55,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:55,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131190386] [2024-06-28 02:28:55,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:55,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:57,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:57,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:57,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131190386] [2024-06-28 02:28:57,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131190386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:57,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:57,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:28:57,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874713314] [2024-06-28 02:28:57,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:57,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:28:57,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:57,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:28:57,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:28:57,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:28:57,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 364 transitions, 3487 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:57,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:57,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:28:57,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:58,045 INFO L124 PetriNetUnfolderBase]: 1117/2053 cut-off events. [2024-06-28 02:28:58,046 INFO L125 PetriNetUnfolderBase]: For 112809/112809 co-relation queries the response was YES. [2024-06-28 02:28:58,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10490 conditions, 2053 events. 1117/2053 cut-off events. For 112809/112809 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12607 event pairs, 245 based on Foata normal form. 2/2055 useless extension candidates. Maximal degree in co-relation 10300. Up to 1786 conditions per place. [2024-06-28 02:28:58,074 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 325 selfloop transitions, 63 changer transitions 0/390 dead transitions. [2024-06-28 02:28:58,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 390 transitions, 4391 flow [2024-06-28 02:28:58,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:58,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:58,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 02:28:58,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:28:58,076 INFO L175 Difference]: Start difference. First operand has 446 places, 364 transitions, 3487 flow. Second operand 12 states and 132 transitions. [2024-06-28 02:28:58,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 390 transitions, 4391 flow [2024-06-28 02:28:58,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 390 transitions, 4271 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:28:58,874 INFO L231 Difference]: Finished difference. Result has 444 places, 365 transitions, 3547 flow [2024-06-28 02:28:58,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3367, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3547, PETRI_PLACES=444, PETRI_TRANSITIONS=365} [2024-06-28 02:28:58,879 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 413 predicate places. [2024-06-28 02:28:58,880 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 365 transitions, 3547 flow [2024-06-28 02:28:58,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:58,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:58,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:58,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-28 02:28:58,880 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:58,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:58,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1384232046, now seen corresponding path program 7 times [2024-06-28 02:28:58,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:58,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343633356] [2024-06-28 02:28:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:58,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:00,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:00,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343633356] [2024-06-28 02:29:00,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343633356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:00,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:00,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:00,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132060239] [2024-06-28 02:29:00,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:00,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:00,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:00,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:00,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:00,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:00,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 365 transitions, 3547 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:00,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:00,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:00,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:01,343 INFO L124 PetriNetUnfolderBase]: 1133/2089 cut-off events. [2024-06-28 02:29:01,343 INFO L125 PetriNetUnfolderBase]: For 172385/172385 co-relation queries the response was YES. [2024-06-28 02:29:01,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10652 conditions, 2089 events. 1133/2089 cut-off events. For 172385/172385 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 12832 event pairs, 249 based on Foata normal form. 10/2099 useless extension candidates. Maximal degree in co-relation 10462. Up to 1772 conditions per place. [2024-06-28 02:29:01,372 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 322 selfloop transitions, 63 changer transitions 7/394 dead transitions. [2024-06-28 02:29:01,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 394 transitions, 4451 flow [2024-06-28 02:29:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:29:01,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:29:01,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 02:29:01,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-28 02:29:01,374 INFO L175 Difference]: Start difference. First operand has 444 places, 365 transitions, 3547 flow. Second operand 12 states and 138 transitions. [2024-06-28 02:29:01,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 394 transitions, 4451 flow [2024-06-28 02:29:02,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 394 transitions, 4281 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-28 02:29:02,195 INFO L231 Difference]: Finished difference. Result has 446 places, 362 transitions, 3479 flow [2024-06-28 02:29:02,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3377, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3479, PETRI_PLACES=446, PETRI_TRANSITIONS=362} [2024-06-28 02:29:02,196 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-28 02:29:02,196 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 362 transitions, 3479 flow [2024-06-28 02:29:02,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:02,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:02,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:02,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-28 02:29:02,196 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:02,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:02,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1391381886, now seen corresponding path program 8 times [2024-06-28 02:29:02,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:02,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186238505] [2024-06-28 02:29:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:02,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:03,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:03,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186238505] [2024-06-28 02:29:03,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186238505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:03,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:03,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:03,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789173344] [2024-06-28 02:29:03,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:03,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:03,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:03,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:03,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:03,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:03,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 362 transitions, 3479 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:03,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:03,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:03,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:04,506 INFO L124 PetriNetUnfolderBase]: 1123/2075 cut-off events. [2024-06-28 02:29:04,506 INFO L125 PetriNetUnfolderBase]: For 174086/174086 co-relation queries the response was YES. [2024-06-28 02:29:04,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10505 conditions, 2075 events. 1123/2075 cut-off events. For 174086/174086 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 12725 event pairs, 241 based on Foata normal form. 10/2085 useless extension candidates. Maximal degree in co-relation 10314. Up to 1723 conditions per place. [2024-06-28 02:29:04,535 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 317 selfloop transitions, 66 changer transitions 9/394 dead transitions. [2024-06-28 02:29:04,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 394 transitions, 4395 flow [2024-06-28 02:29:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:29:04,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:29:04,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-28 02:29:04,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35336538461538464 [2024-06-28 02:29:04,536 INFO L175 Difference]: Start difference. First operand has 446 places, 362 transitions, 3479 flow. Second operand 13 states and 147 transitions. [2024-06-28 02:29:04,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 394 transitions, 4395 flow [2024-06-28 02:29:05,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 394 transitions, 4261 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 02:29:05,304 INFO L231 Difference]: Finished difference. Result has 446 places, 359 transitions, 3453 flow [2024-06-28 02:29:05,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3345, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3453, PETRI_PLACES=446, PETRI_TRANSITIONS=359} [2024-06-28 02:29:05,304 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-28 02:29:05,304 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 359 transitions, 3453 flow [2024-06-28 02:29:05,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:05,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:05,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:05,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-28 02:29:05,305 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:05,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:05,305 INFO L85 PathProgramCache]: Analyzing trace with hash 854657854, now seen corresponding path program 22 times [2024-06-28 02:29:05,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:05,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806458639] [2024-06-28 02:29:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:05,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:06,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:06,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:06,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806458639] [2024-06-28 02:29:06,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806458639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:06,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:06,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:06,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715489140] [2024-06-28 02:29:06,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:06,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:06,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:06,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:06,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:06,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:06,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 359 transitions, 3453 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:06,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:06,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:06,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:07,126 INFO L124 PetriNetUnfolderBase]: 1101/2034 cut-off events. [2024-06-28 02:29:07,127 INFO L125 PetriNetUnfolderBase]: For 114845/114845 co-relation queries the response was YES. [2024-06-28 02:29:07,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10412 conditions, 2034 events. 1101/2034 cut-off events. For 114845/114845 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 12509 event pairs, 229 based on Foata normal form. 2/2036 useless extension candidates. Maximal degree in co-relation 10221. Up to 1775 conditions per place. [2024-06-28 02:29:07,151 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 336 selfloop transitions, 42 changer transitions 0/380 dead transitions. [2024-06-28 02:29:07,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 380 transitions, 4307 flow [2024-06-28 02:29:07,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:07,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:07,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 02:29:07,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3153409090909091 [2024-06-28 02:29:07,152 INFO L175 Difference]: Start difference. First operand has 446 places, 359 transitions, 3453 flow. Second operand 11 states and 111 transitions. [2024-06-28 02:29:07,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 380 transitions, 4307 flow [2024-06-28 02:29:07,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 380 transitions, 4137 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-28 02:29:07,897 INFO L231 Difference]: Finished difference. Result has 442 places, 360 transitions, 3429 flow [2024-06-28 02:29:07,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3283, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3429, PETRI_PLACES=442, PETRI_TRANSITIONS=360} [2024-06-28 02:29:07,898 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 411 predicate places. [2024-06-28 02:29:07,898 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 360 transitions, 3429 flow [2024-06-28 02:29:07,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:07,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:07,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:07,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-28 02:29:07,898 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:07,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:07,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1635718842, now seen corresponding path program 23 times [2024-06-28 02:29:07,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:07,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256131769] [2024-06-28 02:29:07,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:07,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:09,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:09,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256131769] [2024-06-28 02:29:09,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256131769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:09,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:09,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:09,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255375021] [2024-06-28 02:29:09,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:09,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:09,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:09,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:09,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:09,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:09,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 360 transitions, 3429 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:09,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:09,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:09,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:09,952 INFO L124 PetriNetUnfolderBase]: 1105/2042 cut-off events. [2024-06-28 02:29:09,952 INFO L125 PetriNetUnfolderBase]: For 115812/115812 co-relation queries the response was YES. [2024-06-28 02:29:09,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10432 conditions, 2042 events. 1105/2042 cut-off events. For 115812/115812 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 12596 event pairs, 283 based on Foata normal form. 2/2044 useless extension candidates. Maximal degree in co-relation 10242. Up to 1851 conditions per place. [2024-06-28 02:29:09,980 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 332 selfloop transitions, 47 changer transitions 0/381 dead transitions. [2024-06-28 02:29:09,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 381 transitions, 4295 flow [2024-06-28 02:29:09,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:09,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 02:29:09,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-28 02:29:09,981 INFO L175 Difference]: Start difference. First operand has 442 places, 360 transitions, 3429 flow. Second operand 11 states and 116 transitions. [2024-06-28 02:29:09,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 381 transitions, 4295 flow [2024-06-28 02:29:10,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 381 transitions, 4159 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 02:29:10,742 INFO L231 Difference]: Finished difference. Result has 444 places, 361 transitions, 3447 flow [2024-06-28 02:29:10,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3299, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3447, PETRI_PLACES=444, PETRI_TRANSITIONS=361} [2024-06-28 02:29:10,743 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 413 predicate places. [2024-06-28 02:29:10,743 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 361 transitions, 3447 flow [2024-06-28 02:29:10,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:10,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:10,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:10,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-28 02:29:10,744 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:10,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:10,744 INFO L85 PathProgramCache]: Analyzing trace with hash -921191566, now seen corresponding path program 24 times [2024-06-28 02:29:10,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:10,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251050601] [2024-06-28 02:29:10,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:10,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:11,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:11,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:11,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251050601] [2024-06-28 02:29:11,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251050601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:11,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:11,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:11,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029849720] [2024-06-28 02:29:11,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:11,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:11,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:11,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:11,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:12,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:12,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 361 transitions, 3447 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:12,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:12,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:12,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:12,807 INFO L124 PetriNetUnfolderBase]: 1109/2050 cut-off events. [2024-06-28 02:29:12,807 INFO L125 PetriNetUnfolderBase]: For 111921/111921 co-relation queries the response was YES. [2024-06-28 02:29:12,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10427 conditions, 2050 events. 1109/2050 cut-off events. For 111921/111921 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 12625 event pairs, 276 based on Foata normal form. 2/2052 useless extension candidates. Maximal degree in co-relation 10236. Up to 1845 conditions per place. [2024-06-28 02:29:12,835 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 332 selfloop transitions, 48 changer transitions 0/382 dead transitions. [2024-06-28 02:29:12,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 382 transitions, 4309 flow [2024-06-28 02:29:12,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:12,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:12,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 02:29:12,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-28 02:29:12,837 INFO L175 Difference]: Start difference. First operand has 444 places, 361 transitions, 3447 flow. Second operand 11 states and 115 transitions. [2024-06-28 02:29:12,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 382 transitions, 4309 flow [2024-06-28 02:29:13,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 382 transitions, 4171 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 02:29:13,569 INFO L231 Difference]: Finished difference. Result has 446 places, 362 transitions, 3463 flow [2024-06-28 02:29:13,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3311, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3463, PETRI_PLACES=446, PETRI_TRANSITIONS=362} [2024-06-28 02:29:13,569 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-28 02:29:13,569 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 362 transitions, 3463 flow [2024-06-28 02:29:13,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:13,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:13,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:13,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-28 02:29:13,570 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:13,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:13,570 INFO L85 PathProgramCache]: Analyzing trace with hash -2111553006, now seen corresponding path program 25 times [2024-06-28 02:29:13,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:13,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515074526] [2024-06-28 02:29:13,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:13,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:14,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:14,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515074526] [2024-06-28 02:29:14,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515074526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:14,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:14,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:14,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241208026] [2024-06-28 02:29:14,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:14,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:14,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:14,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:14,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:14,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:14,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 362 transitions, 3463 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:14,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:14,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:14,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:15,598 INFO L124 PetriNetUnfolderBase]: 1113/2058 cut-off events. [2024-06-28 02:29:15,598 INFO L125 PetriNetUnfolderBase]: For 112031/112031 co-relation queries the response was YES. [2024-06-28 02:29:15,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10472 conditions, 2058 events. 1113/2058 cut-off events. For 112031/112031 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12705 event pairs, 262 based on Foata normal form. 2/2060 useless extension candidates. Maximal degree in co-relation 10280. Up to 1809 conditions per place. [2024-06-28 02:29:15,624 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 331 selfloop transitions, 50 changer transitions 0/383 dead transitions. [2024-06-28 02:29:15,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 383 transitions, 4325 flow [2024-06-28 02:29:15,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:15,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:15,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 02:29:15,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-28 02:29:15,625 INFO L175 Difference]: Start difference. First operand has 446 places, 362 transitions, 3463 flow. Second operand 11 states and 116 transitions. [2024-06-28 02:29:15,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 383 transitions, 4325 flow [2024-06-28 02:29:16,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 383 transitions, 4183 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 02:29:16,439 INFO L231 Difference]: Finished difference. Result has 448 places, 363 transitions, 3479 flow [2024-06-28 02:29:16,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3325, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3479, PETRI_PLACES=448, PETRI_TRANSITIONS=363} [2024-06-28 02:29:16,440 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 417 predicate places. [2024-06-28 02:29:16,440 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 363 transitions, 3479 flow [2024-06-28 02:29:16,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:16,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:16,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:16,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-28 02:29:16,440 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:16,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:16,441 INFO L85 PathProgramCache]: Analyzing trace with hash -2115127926, now seen corresponding path program 26 times [2024-06-28 02:29:16,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:16,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019788671] [2024-06-28 02:29:16,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:16,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:17,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:17,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:17,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019788671] [2024-06-28 02:29:17,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019788671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:17,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:17,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:17,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908822177] [2024-06-28 02:29:17,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:17,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:17,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:17,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:17,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:17,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:17,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 363 transitions, 3479 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:17,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:17,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:17,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:18,518 INFO L124 PetriNetUnfolderBase]: 1117/2066 cut-off events. [2024-06-28 02:29:18,518 INFO L125 PetriNetUnfolderBase]: For 110289/110289 co-relation queries the response was YES. [2024-06-28 02:29:18,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10505 conditions, 2066 events. 1117/2066 cut-off events. For 110289/110289 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 12788 event pairs, 244 based on Foata normal form. 2/2068 useless extension candidates. Maximal degree in co-relation 10312. Up to 1749 conditions per place. [2024-06-28 02:29:18,548 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 329 selfloop transitions, 53 changer transitions 0/384 dead transitions. [2024-06-28 02:29:18,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 384 transitions, 4339 flow [2024-06-28 02:29:18,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:18,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:18,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 02:29:18,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-28 02:29:18,549 INFO L175 Difference]: Start difference. First operand has 448 places, 363 transitions, 3479 flow. Second operand 11 states and 117 transitions. [2024-06-28 02:29:18,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 384 transitions, 4339 flow [2024-06-28 02:29:19,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 384 transitions, 4195 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 02:29:19,325 INFO L231 Difference]: Finished difference. Result has 450 places, 364 transitions, 3497 flow [2024-06-28 02:29:19,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3339, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3497, PETRI_PLACES=450, PETRI_TRANSITIONS=364} [2024-06-28 02:29:19,326 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 419 predicate places. [2024-06-28 02:29:19,327 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 364 transitions, 3497 flow [2024-06-28 02:29:19,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:19,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:19,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:19,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-28 02:29:19,327 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:19,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:19,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1468195120, now seen corresponding path program 9 times [2024-06-28 02:29:19,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:19,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305057473] [2024-06-28 02:29:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:19,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:20,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:20,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:20,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305057473] [2024-06-28 02:29:20,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305057473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:20,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:20,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:20,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657945159] [2024-06-28 02:29:20,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:20,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:20,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:20,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:20,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:20,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:20,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 364 transitions, 3497 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:20,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:20,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:20,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:21,506 INFO L124 PetriNetUnfolderBase]: 1133/2102 cut-off events. [2024-06-28 02:29:21,507 INFO L125 PetriNetUnfolderBase]: For 164152/164152 co-relation queries the response was YES. [2024-06-28 02:29:21,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10570 conditions, 2102 events. 1133/2102 cut-off events. For 164152/164152 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 13025 event pairs, 297 based on Foata normal form. 10/2112 useless extension candidates. Maximal degree in co-relation 10376. Up to 1873 conditions per place. [2024-06-28 02:29:21,537 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 333 selfloop transitions, 44 changer transitions 11/390 dead transitions. [2024-06-28 02:29:21,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 390 transitions, 4373 flow [2024-06-28 02:29:21,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:29:21,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:29:21,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 02:29:21,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 02:29:21,538 INFO L175 Difference]: Start difference. First operand has 450 places, 364 transitions, 3497 flow. Second operand 12 states and 128 transitions. [2024-06-28 02:29:21,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 390 transitions, 4373 flow [2024-06-28 02:29:22,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 390 transitions, 4229 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 02:29:22,320 INFO L231 Difference]: Finished difference. Result has 453 places, 361 transitions, 3420 flow [2024-06-28 02:29:22,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3353, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3420, PETRI_PLACES=453, PETRI_TRANSITIONS=361} [2024-06-28 02:29:22,321 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 422 predicate places. [2024-06-28 02:29:22,321 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 361 transitions, 3420 flow [2024-06-28 02:29:22,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:22,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:22,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:22,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-28 02:29:22,321 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:22,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:22,322 INFO L85 PathProgramCache]: Analyzing trace with hash -60397912, now seen corresponding path program 27 times [2024-06-28 02:29:22,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:22,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530756665] [2024-06-28 02:29:22,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:22,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:25,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:25,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530756665] [2024-06-28 02:29:25,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530756665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:25,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:25,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:25,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520000385] [2024-06-28 02:29:25,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:25,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:25,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:25,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:25,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:25,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:25,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 361 transitions, 3420 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:25,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:25,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:25,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:26,182 INFO L124 PetriNetUnfolderBase]: 1111/2059 cut-off events. [2024-06-28 02:29:26,182 INFO L125 PetriNetUnfolderBase]: For 105519/105519 co-relation queries the response was YES. [2024-06-28 02:29:26,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10342 conditions, 2059 events. 1111/2059 cut-off events. For 105519/105519 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12742 event pairs, 219 based on Foata normal form. 2/2061 useless extension candidates. Maximal degree in co-relation 10147. Up to 1573 conditions per place. [2024-06-28 02:29:26,212 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 276 selfloop transitions, 107 changer transitions 0/385 dead transitions. [2024-06-28 02:29:26,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 385 transitions, 4304 flow [2024-06-28 02:29:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 02:29:26,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-28 02:29:26,214 INFO L175 Difference]: Start difference. First operand has 453 places, 361 transitions, 3420 flow. Second operand 11 states and 123 transitions. [2024-06-28 02:29:26,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 385 transitions, 4304 flow [2024-06-28 02:29:26,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 385 transitions, 4212 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:29:26,956 INFO L231 Difference]: Finished difference. Result has 450 places, 362 transitions, 3590 flow [2024-06-28 02:29:26,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3328, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3590, PETRI_PLACES=450, PETRI_TRANSITIONS=362} [2024-06-28 02:29:26,956 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 419 predicate places. [2024-06-28 02:29:26,956 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 362 transitions, 3590 flow [2024-06-28 02:29:26,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:26,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:26,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:26,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-28 02:29:26,957 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:26,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:26,957 INFO L85 PathProgramCache]: Analyzing trace with hash -60130506, now seen corresponding path program 10 times [2024-06-28 02:29:26,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:26,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282794316] [2024-06-28 02:29:26,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:26,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:28,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:28,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:28,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282794316] [2024-06-28 02:29:28,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282794316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:28,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:28,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:28,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993778690] [2024-06-28 02:29:28,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:28,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:28,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:28,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:28,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:28,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:28,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 362 transitions, 3590 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:28,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:28,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:28,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:29,195 INFO L124 PetriNetUnfolderBase]: 1127/2095 cut-off events. [2024-06-28 02:29:29,195 INFO L125 PetriNetUnfolderBase]: For 158977/158977 co-relation queries the response was YES. [2024-06-28 02:29:29,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10660 conditions, 2095 events. 1127/2095 cut-off events. For 158977/158977 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 12974 event pairs, 221 based on Foata normal form. 10/2105 useless extension candidates. Maximal degree in co-relation 10466. Up to 1528 conditions per place. [2024-06-28 02:29:29,224 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 268 selfloop transitions, 107 changer transitions 15/392 dead transitions. [2024-06-28 02:29:29,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 392 transitions, 4498 flow [2024-06-28 02:29:29,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:29:29,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:29:29,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 02:29:29,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-28 02:29:29,225 INFO L175 Difference]: Start difference. First operand has 450 places, 362 transitions, 3590 flow. Second operand 12 states and 137 transitions. [2024-06-28 02:29:29,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 392 transitions, 4498 flow [2024-06-28 02:29:30,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 392 transitions, 4248 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 02:29:30,026 INFO L231 Difference]: Finished difference. Result has 453 places, 356 transitions, 3499 flow [2024-06-28 02:29:30,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3340, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3499, PETRI_PLACES=453, PETRI_TRANSITIONS=356} [2024-06-28 02:29:30,027 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 422 predicate places. [2024-06-28 02:29:30,027 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 356 transitions, 3499 flow [2024-06-28 02:29:30,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:30,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:30,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:30,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-28 02:29:30,027 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:30,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:30,028 INFO L85 PathProgramCache]: Analyzing trace with hash -267051352, now seen corresponding path program 28 times [2024-06-28 02:29:30,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:30,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350623848] [2024-06-28 02:29:30,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:30,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:31,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:31,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350623848] [2024-06-28 02:29:31,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350623848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:31,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:31,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:31,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168503949] [2024-06-28 02:29:31,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:31,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:31,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:31,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:31,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:31,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:31,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 356 transitions, 3499 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:31,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:31,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:31,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:32,317 INFO L124 PetriNetUnfolderBase]: 1100/2042 cut-off events. [2024-06-28 02:29:32,317 INFO L125 PetriNetUnfolderBase]: For 103979/103979 co-relation queries the response was YES. [2024-06-28 02:29:32,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10425 conditions, 2042 events. 1100/2042 cut-off events. For 103979/103979 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 12597 event pairs, 225 based on Foata normal form. 2/2044 useless extension candidates. Maximal degree in co-relation 10230. Up to 1634 conditions per place. [2024-06-28 02:29:32,347 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 289 selfloop transitions, 87 changer transitions 0/378 dead transitions. [2024-06-28 02:29:32,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 378 transitions, 4357 flow [2024-06-28 02:29:32,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:32,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:29:32,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:29:32,373 INFO L175 Difference]: Start difference. First operand has 453 places, 356 transitions, 3499 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:29:32,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 378 transitions, 4357 flow [2024-06-28 02:29:33,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 378 transitions, 4077 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 02:29:33,182 INFO L231 Difference]: Finished difference. Result has 446 places, 357 transitions, 3441 flow [2024-06-28 02:29:33,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3219, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3441, PETRI_PLACES=446, PETRI_TRANSITIONS=357} [2024-06-28 02:29:33,183 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-28 02:29:33,183 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 357 transitions, 3441 flow [2024-06-28 02:29:33,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:33,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:33,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:33,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-28 02:29:33,184 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:33,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:33,184 INFO L85 PathProgramCache]: Analyzing trace with hash -267056932, now seen corresponding path program 29 times [2024-06-28 02:29:33,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:33,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025922945] [2024-06-28 02:29:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:33,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:34,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:34,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025922945] [2024-06-28 02:29:34,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025922945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:34,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:34,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:34,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646952952] [2024-06-28 02:29:34,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:34,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:34,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:34,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:34,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:34,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:34,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 357 transitions, 3441 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:34,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:34,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:34,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:35,544 INFO L124 PetriNetUnfolderBase]: 1104/2050 cut-off events. [2024-06-28 02:29:35,544 INFO L125 PetriNetUnfolderBase]: For 101601/101601 co-relation queries the response was YES. [2024-06-28 02:29:35,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10314 conditions, 2050 events. 1104/2050 cut-off events. For 101601/101601 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12696 event pairs, 223 based on Foata normal form. 2/2052 useless extension candidates. Maximal degree in co-relation 10122. Up to 1642 conditions per place. [2024-06-28 02:29:35,573 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 291 selfloop transitions, 86 changer transitions 0/379 dead transitions. [2024-06-28 02:29:35,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 379 transitions, 4301 flow [2024-06-28 02:29:35,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:35,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:35,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 02:29:35,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-28 02:29:35,574 INFO L175 Difference]: Start difference. First operand has 446 places, 357 transitions, 3441 flow. Second operand 11 states and 120 transitions. [2024-06-28 02:29:35,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 379 transitions, 4301 flow [2024-06-28 02:29:36,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 379 transitions, 4089 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 02:29:36,235 INFO L231 Difference]: Finished difference. Result has 448 places, 358 transitions, 3451 flow [2024-06-28 02:29:36,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3231, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3451, PETRI_PLACES=448, PETRI_TRANSITIONS=358} [2024-06-28 02:29:36,235 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 417 predicate places. [2024-06-28 02:29:36,235 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 358 transitions, 3451 flow [2024-06-28 02:29:36,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:36,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:36,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:36,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-28 02:29:36,236 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:36,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:36,236 INFO L85 PathProgramCache]: Analyzing trace with hash -67547752, now seen corresponding path program 30 times [2024-06-28 02:29:36,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:36,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17264842] [2024-06-28 02:29:36,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:36,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:38,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:38,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17264842] [2024-06-28 02:29:38,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17264842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:38,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:38,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:38,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87850689] [2024-06-28 02:29:38,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:38,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:38,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:38,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:38,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:38,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:38,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 358 transitions, 3451 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:38,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:38,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:38,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:39,290 INFO L124 PetriNetUnfolderBase]: 1108/2058 cut-off events. [2024-06-28 02:29:39,290 INFO L125 PetriNetUnfolderBase]: For 101567/101567 co-relation queries the response was YES. [2024-06-28 02:29:39,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10347 conditions, 2058 events. 1108/2058 cut-off events. For 101567/101567 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 12778 event pairs, 227 based on Foata normal form. 2/2060 useless extension candidates. Maximal degree in co-relation 10154. Up to 1650 conditions per place. [2024-06-28 02:29:39,319 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 284 selfloop transitions, 95 changer transitions 0/381 dead transitions. [2024-06-28 02:29:39,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 381 transitions, 4323 flow [2024-06-28 02:29:39,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:39,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:39,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:29:39,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:29:39,321 INFO L175 Difference]: Start difference. First operand has 448 places, 358 transitions, 3451 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:29:39,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 381 transitions, 4323 flow [2024-06-28 02:29:40,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 381 transitions, 4113 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 02:29:40,085 INFO L231 Difference]: Finished difference. Result has 450 places, 359 transitions, 3481 flow [2024-06-28 02:29:40,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3243, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3481, PETRI_PLACES=450, PETRI_TRANSITIONS=359} [2024-06-28 02:29:40,085 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 419 predicate places. [2024-06-28 02:29:40,085 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 359 transitions, 3481 flow [2024-06-28 02:29:40,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:40,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:40,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:40,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-28 02:29:40,086 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:40,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:40,086 INFO L85 PathProgramCache]: Analyzing trace with hash -67755142, now seen corresponding path program 31 times [2024-06-28 02:29:40,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:40,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667883324] [2024-06-28 02:29:40,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:40,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:41,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:41,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667883324] [2024-06-28 02:29:41,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667883324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:41,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:41,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:41,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779821258] [2024-06-28 02:29:41,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:41,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:41,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:41,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:41,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:41,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:41,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 359 transitions, 3481 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:41,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:41,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:41,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:42,501 INFO L124 PetriNetUnfolderBase]: 1112/2066 cut-off events. [2024-06-28 02:29:42,501 INFO L125 PetriNetUnfolderBase]: For 101400/101400 co-relation queries the response was YES. [2024-06-28 02:29:42,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10418 conditions, 2066 events. 1112/2066 cut-off events. For 101400/101400 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 12826 event pairs, 227 based on Foata normal form. 2/2068 useless extension candidates. Maximal degree in co-relation 10224. Up to 1658 conditions per place. [2024-06-28 02:29:42,525 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 286 selfloop transitions, 94 changer transitions 0/382 dead transitions. [2024-06-28 02:29:42,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 382 transitions, 4353 flow [2024-06-28 02:29:42,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:42,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 02:29:42,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-28 02:29:42,527 INFO L175 Difference]: Start difference. First operand has 450 places, 359 transitions, 3481 flow. Second operand 11 states and 120 transitions. [2024-06-28 02:29:42,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 382 transitions, 4353 flow [2024-06-28 02:29:43,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 382 transitions, 4125 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 02:29:43,354 INFO L231 Difference]: Finished difference. Result has 452 places, 360 transitions, 3491 flow [2024-06-28 02:29:43,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3255, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3491, PETRI_PLACES=452, PETRI_TRANSITIONS=360} [2024-06-28 02:29:43,354 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 421 predicate places. [2024-06-28 02:29:43,354 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 360 transitions, 3491 flow [2024-06-28 02:29:43,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:43,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:43,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:43,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-28 02:29:43,355 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:43,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:43,355 INFO L85 PathProgramCache]: Analyzing trace with hash -267201082, now seen corresponding path program 32 times [2024-06-28 02:29:43,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:43,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434465837] [2024-06-28 02:29:43,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:43,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:44,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:44,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434465837] [2024-06-28 02:29:44,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434465837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:44,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:44,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:44,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087505568] [2024-06-28 02:29:44,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:44,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:44,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:44,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:44,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:44,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:44,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 360 transitions, 3491 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:44,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:44,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:44,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:45,675 INFO L124 PetriNetUnfolderBase]: 1116/2074 cut-off events. [2024-06-28 02:29:45,675 INFO L125 PetriNetUnfolderBase]: For 101587/101587 co-relation queries the response was YES. [2024-06-28 02:29:45,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10451 conditions, 2074 events. 1116/2074 cut-off events. For 101587/101587 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 12929 event pairs, 219 based on Foata normal form. 2/2076 useless extension candidates. Maximal degree in co-relation 10256. Up to 1622 conditions per place. [2024-06-28 02:29:45,705 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 292 selfloop transitions, 88 changer transitions 0/382 dead transitions. [2024-06-28 02:29:45,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 382 transitions, 4355 flow [2024-06-28 02:29:45,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 02:29:45,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-28 02:29:45,707 INFO L175 Difference]: Start difference. First operand has 452 places, 360 transitions, 3491 flow. Second operand 11 states and 120 transitions. [2024-06-28 02:29:45,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 382 transitions, 4355 flow [2024-06-28 02:29:46,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 382 transitions, 4129 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 02:29:46,451 INFO L231 Difference]: Finished difference. Result has 454 places, 361 transitions, 3491 flow [2024-06-28 02:29:46,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3267, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3491, PETRI_PLACES=454, PETRI_TRANSITIONS=361} [2024-06-28 02:29:46,452 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 423 predicate places. [2024-06-28 02:29:46,452 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 361 transitions, 3491 flow [2024-06-28 02:29:46,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:46,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:46,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:46,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-28 02:29:46,453 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:46,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:46,453 INFO L85 PathProgramCache]: Analyzing trace with hash -261479226, now seen corresponding path program 11 times [2024-06-28 02:29:46,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:46,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862284245] [2024-06-28 02:29:46,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:46,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:48,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:48,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862284245] [2024-06-28 02:29:48,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862284245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:48,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:48,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:48,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631838170] [2024-06-28 02:29:48,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:48,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:48,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:48,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:48,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:48,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 361 transitions, 3491 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:48,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:48,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:48,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:49,223 INFO L124 PetriNetUnfolderBase]: 1132/2110 cut-off events. [2024-06-28 02:29:49,223 INFO L125 PetriNetUnfolderBase]: For 153804/153804 co-relation queries the response was YES. [2024-06-28 02:29:49,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10498 conditions, 2110 events. 1132/2110 cut-off events. For 153804/153804 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 13152 event pairs, 233 based on Foata normal form. 10/2120 useless extension candidates. Maximal degree in co-relation 10302. Up to 1664 conditions per place. [2024-06-28 02:29:49,251 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 291 selfloop transitions, 84 changer transitions 11/388 dead transitions. [2024-06-28 02:29:49,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 388 transitions, 4373 flow [2024-06-28 02:29:49,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:29:49,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:29:49,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 02:29:49,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-28 02:29:49,253 INFO L175 Difference]: Start difference. First operand has 454 places, 361 transitions, 3491 flow. Second operand 12 states and 133 transitions. [2024-06-28 02:29:49,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 388 transitions, 4373 flow [2024-06-28 02:29:50,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 388 transitions, 4161 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 02:29:50,117 INFO L231 Difference]: Finished difference. Result has 457 places, 358 transitions, 3428 flow [2024-06-28 02:29:50,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3279, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3428, PETRI_PLACES=457, PETRI_TRANSITIONS=358} [2024-06-28 02:29:50,117 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 426 predicate places. [2024-06-28 02:29:50,118 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 358 transitions, 3428 flow [2024-06-28 02:29:50,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:50,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:50,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:50,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-28 02:29:50,118 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:50,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:50,118 INFO L85 PathProgramCache]: Analyzing trace with hash -67539816, now seen corresponding path program 12 times [2024-06-28 02:29:50,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:50,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187232472] [2024-06-28 02:29:50,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:50,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:51,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:51,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187232472] [2024-06-28 02:29:51,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187232472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:51,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:51,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:51,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78868844] [2024-06-28 02:29:51,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:51,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:51,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:51,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:51,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:51,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:51,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 358 transitions, 3428 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:51,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:51,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:51,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:52,831 INFO L124 PetriNetUnfolderBase]: 1122/2096 cut-off events. [2024-06-28 02:29:52,832 INFO L125 PetriNetUnfolderBase]: For 153008/153008 co-relation queries the response was YES. [2024-06-28 02:29:52,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10351 conditions, 2096 events. 1122/2096 cut-off events. For 153008/153008 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 13064 event pairs, 231 based on Foata normal form. 10/2106 useless extension candidates. Maximal degree in co-relation 10154. Up to 1650 conditions per place. [2024-06-28 02:29:52,863 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 281 selfloop transitions, 92 changer transitions 11/386 dead transitions. [2024-06-28 02:29:52,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 386 transitions, 4312 flow [2024-06-28 02:29:52,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:29:52,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:29:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 02:29:52,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-28 02:29:52,864 INFO L175 Difference]: Start difference. First operand has 457 places, 358 transitions, 3428 flow. Second operand 12 states and 133 transitions. [2024-06-28 02:29:52,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 386 transitions, 4312 flow [2024-06-28 02:29:53,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 386 transitions, 4140 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:29:53,660 INFO L231 Difference]: Finished difference. Result has 455 places, 355 transitions, 3421 flow [2024-06-28 02:29:53,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3256, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3421, PETRI_PLACES=455, PETRI_TRANSITIONS=355} [2024-06-28 02:29:53,660 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 424 predicate places. [2024-06-28 02:29:53,660 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 355 transitions, 3421 flow [2024-06-28 02:29:53,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:53,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:53,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:53,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-28 02:29:53,661 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:53,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:53,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1000225908, now seen corresponding path program 13 times [2024-06-28 02:29:53,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:53,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337481015] [2024-06-28 02:29:53,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:53,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:55,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:55,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:55,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337481015] [2024-06-28 02:29:55,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337481015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:55,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:55,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:55,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205891811] [2024-06-28 02:29:55,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:55,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:55,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:55,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:55,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:55,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:55,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 355 transitions, 3421 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:55,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:55,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:55,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:56,871 INFO L124 PetriNetUnfolderBase]: 1112/2082 cut-off events. [2024-06-28 02:29:56,871 INFO L125 PetriNetUnfolderBase]: For 150322/150322 co-relation queries the response was YES. [2024-06-28 02:29:56,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10314 conditions, 2082 events. 1112/2082 cut-off events. For 150322/150322 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12967 event pairs, 223 based on Foata normal form. 10/2092 useless extension candidates. Maximal degree in co-relation 10118. Up to 1558 conditions per place. [2024-06-28 02:29:56,895 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 271 selfloop transitions, 100 changer transitions 11/384 dead transitions. [2024-06-28 02:29:56,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 384 transitions, 4307 flow [2024-06-28 02:29:56,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:29:56,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:29:56,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 02:29:56,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-28 02:29:56,896 INFO L175 Difference]: Start difference. First operand has 455 places, 355 transitions, 3421 flow. Second operand 12 states and 135 transitions. [2024-06-28 02:29:56,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 384 transitions, 4307 flow [2024-06-28 02:29:57,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 384 transitions, 4119 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:29:57,645 INFO L231 Difference]: Finished difference. Result has 453 places, 352 transitions, 3414 flow [2024-06-28 02:29:57,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3233, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3414, PETRI_PLACES=453, PETRI_TRANSITIONS=352} [2024-06-28 02:29:57,655 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 422 predicate places. [2024-06-28 02:29:57,655 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 352 transitions, 3414 flow [2024-06-28 02:29:57,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:57,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:57,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:57,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-28 02:29:57,655 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:57,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:57,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1263859386, now seen corresponding path program 33 times [2024-06-28 02:29:57,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:57,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32146730] [2024-06-28 02:29:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:57,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:59,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:59,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32146730] [2024-06-28 02:29:59,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32146730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:59,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:59,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:29:59,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116816279] [2024-06-28 02:29:59,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:59,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:29:59,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:59,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:29:59,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:29:59,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:29:59,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 352 transitions, 3414 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:59,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:59,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:29:59,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:00,109 INFO L124 PetriNetUnfolderBase]: 1090/2040 cut-off events. [2024-06-28 02:30:00,110 INFO L125 PetriNetUnfolderBase]: For 97363/97363 co-relation queries the response was YES. [2024-06-28 02:30:00,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10221 conditions, 2040 events. 1090/2040 cut-off events. For 97363/97363 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 12708 event pairs, 233 based on Foata normal form. 2/2042 useless extension candidates. Maximal degree in co-relation 10026. Up to 1646 conditions per place. [2024-06-28 02:30:00,139 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 288 selfloop transitions, 83 changer transitions 0/373 dead transitions. [2024-06-28 02:30:00,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 373 transitions, 4256 flow [2024-06-28 02:30:00,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:30:00,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:30:00,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:30:00,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:30:00,141 INFO L175 Difference]: Start difference. First operand has 453 places, 352 transitions, 3414 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:30:00,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 373 transitions, 4256 flow [2024-06-28 02:30:00,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 373 transitions, 4052 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:30:00,850 INFO L231 Difference]: Finished difference. Result has 450 places, 353 transitions, 3422 flow [2024-06-28 02:30:00,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3210, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3422, PETRI_PLACES=450, PETRI_TRANSITIONS=353} [2024-06-28 02:30:00,850 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 419 predicate places. [2024-06-28 02:30:00,850 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 353 transitions, 3422 flow [2024-06-28 02:30:00,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:00,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:00,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:00,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-28 02:30:00,851 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:00,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:00,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1263864966, now seen corresponding path program 34 times [2024-06-28 02:30:00,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:00,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499274384] [2024-06-28 02:30:00,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:00,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:02,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:02,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:02,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499274384] [2024-06-28 02:30:02,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499274384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:02,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:02,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:02,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367741820] [2024-06-28 02:30:02,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:02,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:02,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:02,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:02,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:02,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:02,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 353 transitions, 3422 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:02,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:02,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:02,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:03,225 INFO L124 PetriNetUnfolderBase]: 1094/2048 cut-off events. [2024-06-28 02:30:03,226 INFO L125 PetriNetUnfolderBase]: For 96654/96654 co-relation queries the response was YES. [2024-06-28 02:30:03,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10250 conditions, 2048 events. 1094/2048 cut-off events. For 96654/96654 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 12785 event pairs, 231 based on Foata normal form. 2/2050 useless extension candidates. Maximal degree in co-relation 10056. Up to 1640 conditions per place. [2024-06-28 02:30:03,249 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 288 selfloop transitions, 84 changer transitions 0/374 dead transitions. [2024-06-28 02:30:03,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 374 transitions, 4266 flow [2024-06-28 02:30:03,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:30:03,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:30:03,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 02:30:03,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-28 02:30:03,251 INFO L175 Difference]: Start difference. First operand has 450 places, 353 transitions, 3422 flow. Second operand 11 states and 120 transitions. [2024-06-28 02:30:03,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 374 transitions, 4266 flow [2024-06-28 02:30:03,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 374 transitions, 4064 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 02:30:03,921 INFO L231 Difference]: Finished difference. Result has 452 places, 354 transitions, 3438 flow [2024-06-28 02:30:03,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3220, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3438, PETRI_PLACES=452, PETRI_TRANSITIONS=354} [2024-06-28 02:30:03,921 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 421 predicate places. [2024-06-28 02:30:03,921 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 354 transitions, 3438 flow [2024-06-28 02:30:03,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:03,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:03,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:03,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-28 02:30:03,922 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:03,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:03,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1264009116, now seen corresponding path program 35 times [2024-06-28 02:30:03,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:03,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152263518] [2024-06-28 02:30:03,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:03,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:05,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:05,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152263518] [2024-06-28 02:30:05,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152263518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:05,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:05,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:05,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895093328] [2024-06-28 02:30:05,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:05,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:05,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:05,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:05,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:05,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:05,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 354 transitions, 3438 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:05,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:05,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:05,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:06,210 INFO L124 PetriNetUnfolderBase]: 1098/2056 cut-off events. [2024-06-28 02:30:06,211 INFO L125 PetriNetUnfolderBase]: For 98566/98566 co-relation queries the response was YES. [2024-06-28 02:30:06,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10309 conditions, 2056 events. 1098/2056 cut-off events. For 98566/98566 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12881 event pairs, 225 based on Foata normal form. 2/2058 useless extension candidates. Maximal degree in co-relation 10114. Up to 1616 conditions per place. [2024-06-28 02:30:06,240 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 289 selfloop transitions, 84 changer transitions 0/375 dead transitions. [2024-06-28 02:30:06,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 375 transitions, 4284 flow [2024-06-28 02:30:06,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:30:06,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:30:06,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:30:06,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:30:06,242 INFO L175 Difference]: Start difference. First operand has 452 places, 354 transitions, 3438 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:30:06,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 375 transitions, 4284 flow [2024-06-28 02:30:07,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 375 transitions, 4076 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 02:30:07,037 INFO L231 Difference]: Finished difference. Result has 454 places, 355 transitions, 3450 flow [2024-06-28 02:30:07,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3232, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3450, PETRI_PLACES=454, PETRI_TRANSITIONS=355} [2024-06-28 02:30:07,037 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 423 predicate places. [2024-06-28 02:30:07,037 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 355 transitions, 3450 flow [2024-06-28 02:30:07,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:07,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:07,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:07,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-28 02:30:07,038 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:07,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:07,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1267584036, now seen corresponding path program 36 times [2024-06-28 02:30:07,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:07,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700832092] [2024-06-28 02:30:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:07,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:08,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:08,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:08,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700832092] [2024-06-28 02:30:08,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700832092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:08,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:08,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:08,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662203190] [2024-06-28 02:30:08,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:08,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:08,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:08,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:08,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:08,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:08,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 355 transitions, 3450 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:08,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:08,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:08,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:09,214 INFO L124 PetriNetUnfolderBase]: 1102/2064 cut-off events. [2024-06-28 02:30:09,214 INFO L125 PetriNetUnfolderBase]: For 98809/98809 co-relation queries the response was YES. [2024-06-28 02:30:09,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10346 conditions, 2064 events. 1102/2064 cut-off events. For 98809/98809 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 12957 event pairs, 217 based on Foata normal form. 2/2066 useless extension candidates. Maximal degree in co-relation 10150. Up to 1520 conditions per place. [2024-06-28 02:30:09,246 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 284 selfloop transitions, 90 changer transitions 0/376 dead transitions. [2024-06-28 02:30:09,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 376 transitions, 4296 flow [2024-06-28 02:30:09,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:30:09,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:30:09,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 02:30:09,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-28 02:30:09,248 INFO L175 Difference]: Start difference. First operand has 454 places, 355 transitions, 3450 flow. Second operand 11 states and 120 transitions. [2024-06-28 02:30:09,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 376 transitions, 4296 flow [2024-06-28 02:30:09,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 376 transitions, 4088 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 02:30:09,989 INFO L231 Difference]: Finished difference. Result has 456 places, 356 transitions, 3474 flow [2024-06-28 02:30:09,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3244, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3474, PETRI_PLACES=456, PETRI_TRANSITIONS=356} [2024-06-28 02:30:09,989 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 425 predicate places. [2024-06-28 02:30:09,989 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 356 transitions, 3474 flow [2024-06-28 02:30:09,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:09,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:09,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:09,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-28 02:30:09,990 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:09,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:09,990 INFO L85 PathProgramCache]: Analyzing trace with hash -59143226, now seen corresponding path program 14 times [2024-06-28 02:30:09,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:09,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266051080] [2024-06-28 02:30:09,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:09,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:11,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:11,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266051080] [2024-06-28 02:30:11,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266051080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:11,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:11,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:11,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321169108] [2024-06-28 02:30:11,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:11,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:11,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:11,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:11,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:11,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:11,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 356 transitions, 3474 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:11,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:11,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:11,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:12,482 INFO L124 PetriNetUnfolderBase]: 1118/2100 cut-off events. [2024-06-28 02:30:12,482 INFO L125 PetriNetUnfolderBase]: For 149016/149016 co-relation queries the response was YES. [2024-06-28 02:30:12,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10439 conditions, 2100 events. 1118/2100 cut-off events. For 149016/149016 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 13129 event pairs, 247 based on Foata normal form. 10/2110 useless extension candidates. Maximal degree in co-relation 10242. Up to 1662 conditions per place. [2024-06-28 02:30:12,511 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 288 selfloop transitions, 81 changer transitions 11/382 dead transitions. [2024-06-28 02:30:12,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 382 transitions, 4338 flow [2024-06-28 02:30:12,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:30:12,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:30:12,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 02:30:12,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-28 02:30:12,512 INFO L175 Difference]: Start difference. First operand has 456 places, 356 transitions, 3474 flow. Second operand 12 states and 133 transitions. [2024-06-28 02:30:12,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 382 transitions, 4338 flow [2024-06-28 02:30:13,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 382 transitions, 4120 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 02:30:13,218 INFO L231 Difference]: Finished difference. Result has 459 places, 353 transitions, 3401 flow [2024-06-28 02:30:13,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3256, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3401, PETRI_PLACES=459, PETRI_TRANSITIONS=353} [2024-06-28 02:30:13,218 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 428 predicate places. [2024-06-28 02:30:13,219 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 353 transitions, 3401 flow [2024-06-28 02:30:13,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:13,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:13,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:13,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-28 02:30:13,219 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:13,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:13,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1691220614, now seen corresponding path program 37 times [2024-06-28 02:30:13,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:13,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826840042] [2024-06-28 02:30:13,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:13,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:15,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:15,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:15,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826840042] [2024-06-28 02:30:15,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826840042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:15,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:15,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:15,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865307446] [2024-06-28 02:30:15,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:15,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:15,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:15,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:15,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:15,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:15,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 353 transitions, 3401 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:15,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:15,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:15,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:16,148 INFO L124 PetriNetUnfolderBase]: 1096/2059 cut-off events. [2024-06-28 02:30:16,148 INFO L125 PetriNetUnfolderBase]: For 97906/97906 co-relation queries the response was YES. [2024-06-28 02:30:16,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10239 conditions, 2059 events. 1096/2059 cut-off events. For 97906/97906 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 12895 event pairs, 197 based on Foata normal form. 2/2061 useless extension candidates. Maximal degree in co-relation 10041. Up to 1523 conditions per place. [2024-06-28 02:30:16,179 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 272 selfloop transitions, 103 changer transitions 0/377 dead transitions. [2024-06-28 02:30:16,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 377 transitions, 4275 flow [2024-06-28 02:30:16,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:30:16,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:30:16,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 02:30:16,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 02:30:16,180 INFO L175 Difference]: Start difference. First operand has 459 places, 353 transitions, 3401 flow. Second operand 11 states and 128 transitions. [2024-06-28 02:30:16,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 377 transitions, 4275 flow [2024-06-28 02:30:16,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 377 transitions, 4109 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:30:16,988 INFO L231 Difference]: Finished difference. Result has 456 places, 354 transitions, 3489 flow [2024-06-28 02:30:16,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3235, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3489, PETRI_PLACES=456, PETRI_TRANSITIONS=354} [2024-06-28 02:30:16,989 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 425 predicate places. [2024-06-28 02:30:16,989 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 354 transitions, 3489 flow [2024-06-28 02:30:16,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:16,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:16,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:16,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-28 02:30:16,989 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:16,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:16,990 INFO L85 PathProgramCache]: Analyzing trace with hash 311711640, now seen corresponding path program 15 times [2024-06-28 02:30:16,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:16,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932460997] [2024-06-28 02:30:16,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:16,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:18,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:18,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:18,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932460997] [2024-06-28 02:30:18,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932460997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:18,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:18,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:18,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702322774] [2024-06-28 02:30:18,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:18,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:18,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:18,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:18,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:18,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:18,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 354 transitions, 3489 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:18,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:18,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:18,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:19,437 INFO L124 PetriNetUnfolderBase]: 1112/2095 cut-off events. [2024-06-28 02:30:19,437 INFO L125 PetriNetUnfolderBase]: For 146686/146686 co-relation queries the response was YES. [2024-06-28 02:30:19,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10453 conditions, 2095 events. 1112/2095 cut-off events. For 146686/146686 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 13129 event pairs, 199 based on Foata normal form. 10/2105 useless extension candidates. Maximal degree in co-relation 10256. Up to 1479 conditions per place. [2024-06-28 02:30:19,467 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 265 selfloop transitions, 108 changer transitions 11/386 dead transitions. [2024-06-28 02:30:19,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 386 transitions, 4395 flow [2024-06-28 02:30:19,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:30:19,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:30:19,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 152 transitions. [2024-06-28 02:30:19,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36538461538461536 [2024-06-28 02:30:19,468 INFO L175 Difference]: Start difference. First operand has 456 places, 354 transitions, 3489 flow. Second operand 13 states and 152 transitions. [2024-06-28 02:30:19,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 386 transitions, 4395 flow [2024-06-28 02:30:20,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 386 transitions, 4151 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 02:30:20,184 INFO L231 Difference]: Finished difference. Result has 460 places, 350 transitions, 3437 flow [2024-06-28 02:30:20,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3245, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3437, PETRI_PLACES=460, PETRI_TRANSITIONS=350} [2024-06-28 02:30:20,185 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 429 predicate places. [2024-06-28 02:30:20,185 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 350 transitions, 3437 flow [2024-06-28 02:30:20,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:20,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:20,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:20,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-28 02:30:20,185 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:20,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:20,186 INFO L85 PathProgramCache]: Analyzing trace with hash 311452170, now seen corresponding path program 16 times [2024-06-28 02:30:20,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:20,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039458448] [2024-06-28 02:30:20,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:20,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:21,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:21,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039458448] [2024-06-28 02:30:21,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039458448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:21,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:21,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:21,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121680278] [2024-06-28 02:30:21,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:21,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:21,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:21,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:21,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:21,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:21,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 350 transitions, 3437 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:21,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:21,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:21,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:22,914 INFO L124 PetriNetUnfolderBase]: 1100/2075 cut-off events. [2024-06-28 02:30:22,915 INFO L125 PetriNetUnfolderBase]: For 148248/148248 co-relation queries the response was YES. [2024-06-28 02:30:22,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10324 conditions, 2075 events. 1100/2075 cut-off events. For 148248/148248 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 12984 event pairs, 195 based on Foata normal form. 10/2085 useless extension candidates. Maximal degree in co-relation 10126. Up to 1495 conditions per place. [2024-06-28 02:30:22,945 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 266 selfloop transitions, 100 changer transitions 11/379 dead transitions. [2024-06-28 02:30:22,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 379 transitions, 4317 flow [2024-06-28 02:30:22,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:30:22,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:30:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 02:30:22,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-28 02:30:22,946 INFO L175 Difference]: Start difference. First operand has 460 places, 350 transitions, 3437 flow. Second operand 12 states and 140 transitions. [2024-06-28 02:30:22,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 379 transitions, 4317 flow [2024-06-28 02:30:23,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 379 transitions, 4018 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-28 02:30:23,729 INFO L231 Difference]: Finished difference. Result has 455 places, 347 transitions, 3321 flow [2024-06-28 02:30:23,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3138, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3321, PETRI_PLACES=455, PETRI_TRANSITIONS=347} [2024-06-28 02:30:23,730 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 424 predicate places. [2024-06-28 02:30:23,730 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 347 transitions, 3321 flow [2024-06-28 02:30:23,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:23,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:23,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:23,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-28 02:30:23,731 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:23,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:23,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1698572264, now seen corresponding path program 38 times [2024-06-28 02:30:23,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:23,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836851442] [2024-06-28 02:30:23,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:23,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:25,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:25,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836851442] [2024-06-28 02:30:25,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836851442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:25,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:25,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:25,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779418599] [2024-06-28 02:30:25,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:25,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:25,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:25,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:25,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:25,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:25,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 347 transitions, 3321 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:25,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:25,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:25,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:26,595 INFO L124 PetriNetUnfolderBase]: 1078/2033 cut-off events. [2024-06-28 02:30:26,595 INFO L125 PetriNetUnfolderBase]: For 96318/96318 co-relation queries the response was YES. [2024-06-28 02:30:26,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10004 conditions, 2033 events. 1078/2033 cut-off events. For 96318/96318 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 12728 event pairs, 193 based on Foata normal form. 2/2035 useless extension candidates. Maximal degree in co-relation 9808. Up to 1511 conditions per place. [2024-06-28 02:30:26,624 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 270 selfloop transitions, 100 changer transitions 0/372 dead transitions. [2024-06-28 02:30:26,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 372 transitions, 4187 flow [2024-06-28 02:30:26,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:30:26,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:30:26,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 02:30:26,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-28 02:30:26,625 INFO L175 Difference]: Start difference. First operand has 455 places, 347 transitions, 3321 flow. Second operand 12 states and 135 transitions. [2024-06-28 02:30:26,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 372 transitions, 4187 flow [2024-06-28 02:30:27,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 372 transitions, 3983 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:30:27,390 INFO L231 Difference]: Finished difference. Result has 453 places, 348 transitions, 3367 flow [2024-06-28 02:30:27,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3117, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3367, PETRI_PLACES=453, PETRI_TRANSITIONS=348} [2024-06-28 02:30:27,392 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 422 predicate places. [2024-06-28 02:30:27,392 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 348 transitions, 3367 flow [2024-06-28 02:30:27,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:27,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:27,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:27,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-28 02:30:27,392 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:27,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:27,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1698577844, now seen corresponding path program 39 times [2024-06-28 02:30:27,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:27,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055363378] [2024-06-28 02:30:27,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:27,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:28,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:28,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:28,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055363378] [2024-06-28 02:30:28,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055363378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:28,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:28,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:28,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811188623] [2024-06-28 02:30:28,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:28,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:28,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:28,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:28,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:29,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:29,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 348 transitions, 3367 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:29,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:29,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:29,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:29,845 INFO L124 PetriNetUnfolderBase]: 1082/2041 cut-off events. [2024-06-28 02:30:29,846 INFO L125 PetriNetUnfolderBase]: For 95781/95781 co-relation queries the response was YES. [2024-06-28 02:30:29,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10107 conditions, 2041 events. 1082/2041 cut-off events. For 95781/95781 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 12817 event pairs, 191 based on Foata normal form. 2/2043 useless extension candidates. Maximal degree in co-relation 9912. Up to 1527 conditions per place. [2024-06-28 02:30:29,869 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 272 selfloop transitions, 97 changer transitions 0/371 dead transitions. [2024-06-28 02:30:29,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 371 transitions, 4225 flow [2024-06-28 02:30:29,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:30:29,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:30:29,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 02:30:29,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-28 02:30:29,870 INFO L175 Difference]: Start difference. First operand has 453 places, 348 transitions, 3367 flow. Second operand 11 states and 125 transitions. [2024-06-28 02:30:29,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 371 transitions, 4225 flow [2024-06-28 02:30:30,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 371 transitions, 3985 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-28 02:30:30,604 INFO L231 Difference]: Finished difference. Result has 454 places, 349 transitions, 3373 flow [2024-06-28 02:30:30,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3127, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3373, PETRI_PLACES=454, PETRI_TRANSITIONS=349} [2024-06-28 02:30:30,604 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 423 predicate places. [2024-06-28 02:30:30,605 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 349 transitions, 3373 flow [2024-06-28 02:30:30,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:30,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:30,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:30,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-28 02:30:30,605 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:30,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:30,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1698362518, now seen corresponding path program 17 times [2024-06-28 02:30:30,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:30,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378604884] [2024-06-28 02:30:30,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:30,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:32,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:32,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378604884] [2024-06-28 02:30:32,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378604884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:32,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:32,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:32,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924461059] [2024-06-28 02:30:32,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:32,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:32,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:32,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:32,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:33,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:33,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 349 transitions, 3373 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:33,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:33,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:33,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:34,097 INFO L124 PetriNetUnfolderBase]: 1098/2077 cut-off events. [2024-06-28 02:30:34,097 INFO L125 PetriNetUnfolderBase]: For 146806/146806 co-relation queries the response was YES. [2024-06-28 02:30:34,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10172 conditions, 2077 events. 1098/2077 cut-off events. For 146806/146806 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13052 event pairs, 197 based on Foata normal form. 10/2087 useless extension candidates. Maximal degree in co-relation 9976. Up to 1509 conditions per place. [2024-06-28 02:30:34,126 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 265 selfloop transitions, 94 changer transitions 16/377 dead transitions. [2024-06-28 02:30:34,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 377 transitions, 4243 flow [2024-06-28 02:30:34,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:30:34,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:30:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 02:30:34,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-28 02:30:34,127 INFO L175 Difference]: Start difference. First operand has 454 places, 349 transitions, 3373 flow. Second operand 12 states and 139 transitions. [2024-06-28 02:30:34,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 377 transitions, 4243 flow [2024-06-28 02:30:34,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 377 transitions, 4007 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 02:30:34,934 INFO L231 Difference]: Finished difference. Result has 457 places, 343 transitions, 3292 flow [2024-06-28 02:30:34,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3137, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3292, PETRI_PLACES=457, PETRI_TRANSITIONS=343} [2024-06-28 02:30:34,934 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 426 predicate places. [2024-06-28 02:30:34,934 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 343 transitions, 3292 flow [2024-06-28 02:30:34,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:34,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:34,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:34,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-28 02:30:34,935 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:34,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:34,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1897874054, now seen corresponding path program 40 times [2024-06-28 02:30:34,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:34,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547031735] [2024-06-28 02:30:34,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:34,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:36,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:36,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547031735] [2024-06-28 02:30:36,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547031735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:36,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:36,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:36,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233669410] [2024-06-28 02:30:36,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:36,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:36,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:36,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:36,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:36,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:36,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 343 transitions, 3292 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:36,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:36,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:36,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:37,396 INFO L124 PetriNetUnfolderBase]: 1066/2017 cut-off events. [2024-06-28 02:30:37,396 INFO L125 PetriNetUnfolderBase]: For 98249/98249 co-relation queries the response was YES. [2024-06-28 02:30:37,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9955 conditions, 2017 events. 1066/2017 cut-off events. For 98249/98249 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 12623 event pairs, 197 based on Foata normal form. 2/2019 useless extension candidates. Maximal degree in co-relation 9758. Up to 1503 conditions per place. [2024-06-28 02:30:37,425 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 264 selfloop transitions, 98 changer transitions 0/364 dead transitions. [2024-06-28 02:30:37,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 364 transitions, 4130 flow [2024-06-28 02:30:37,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:30:37,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:30:37,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 02:30:37,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-28 02:30:37,426 INFO L175 Difference]: Start difference. First operand has 457 places, 343 transitions, 3292 flow. Second operand 11 states and 123 transitions. [2024-06-28 02:30:37,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 364 transitions, 4130 flow [2024-06-28 02:30:38,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 364 transitions, 3932 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 02:30:38,203 INFO L231 Difference]: Finished difference. Result has 451 places, 344 transitions, 3344 flow [2024-06-28 02:30:38,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3096, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3344, PETRI_PLACES=451, PETRI_TRANSITIONS=344} [2024-06-28 02:30:38,204 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 420 predicate places. [2024-06-28 02:30:38,204 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 344 transitions, 3344 flow [2024-06-28 02:30:38,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:38,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:38,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:38,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-28 02:30:38,205 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:38,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:38,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1897879634, now seen corresponding path program 41 times [2024-06-28 02:30:38,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:38,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24100534] [2024-06-28 02:30:38,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:38,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:39,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:39,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24100534] [2024-06-28 02:30:39,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24100534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:39,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:39,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:39,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399629366] [2024-06-28 02:30:39,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:39,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:39,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:39,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:39,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:40,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:40,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 344 transitions, 3344 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:40,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:40,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:40,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:40,819 INFO L124 PetriNetUnfolderBase]: 1070/2024 cut-off events. [2024-06-28 02:30:40,819 INFO L125 PetriNetUnfolderBase]: For 95890/95890 co-relation queries the response was YES. [2024-06-28 02:30:40,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10046 conditions, 2024 events. 1070/2024 cut-off events. For 95890/95890 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 12706 event pairs, 197 based on Foata normal form. 2/2026 useless extension candidates. Maximal degree in co-relation 9851. Up to 1511 conditions per place. [2024-06-28 02:30:40,848 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 264 selfloop transitions, 102 changer transitions 0/368 dead transitions. [2024-06-28 02:30:40,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 368 transitions, 4215 flow [2024-06-28 02:30:40,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:30:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:30:40,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 02:30:40,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:30:40,849 INFO L175 Difference]: Start difference. First operand has 451 places, 344 transitions, 3344 flow. Second operand 12 states and 132 transitions. [2024-06-28 02:30:40,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 368 transitions, 4215 flow [2024-06-28 02:30:41,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 368 transitions, 3975 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 02:30:41,667 INFO L231 Difference]: Finished difference. Result has 454 places, 346 transitions, 3377 flow [2024-06-28 02:30:41,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3106, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3377, PETRI_PLACES=454, PETRI_TRANSITIONS=346} [2024-06-28 02:30:41,667 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 423 predicate places. [2024-06-28 02:30:41,667 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 346 transitions, 3377 flow [2024-06-28 02:30:41,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:41,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:41,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:41,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-28 02:30:41,668 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:41,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:41,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1898023784, now seen corresponding path program 42 times [2024-06-28 02:30:41,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:41,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278618462] [2024-06-28 02:30:41,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:41,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:43,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:43,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278618462] [2024-06-28 02:30:43,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278618462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:43,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:43,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:30:43,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554582742] [2024-06-28 02:30:43,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:43,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:30:43,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:43,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:30:43,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:30:43,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:43,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 346 transitions, 3377 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:43,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:43,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:43,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:44,037 INFO L124 PetriNetUnfolderBase]: 1074/2033 cut-off events. [2024-06-28 02:30:44,037 INFO L125 PetriNetUnfolderBase]: For 98022/98022 co-relation queries the response was YES. [2024-06-28 02:30:44,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10099 conditions, 2033 events. 1074/2033 cut-off events. For 98022/98022 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 12791 event pairs, 193 based on Foata normal form. 2/2035 useless extension candidates. Maximal degree in co-relation 9903. Up to 1493 conditions per place. [2024-06-28 02:30:44,066 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 264 selfloop transitions, 101 changer transitions 0/367 dead transitions. [2024-06-28 02:30:44,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 367 transitions, 4219 flow [2024-06-28 02:30:44,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:30:44,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:30:44,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:30:44,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 02:30:44,068 INFO L175 Difference]: Start difference. First operand has 454 places, 346 transitions, 3377 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:30:44,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 367 transitions, 4219 flow [2024-06-28 02:30:44,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 367 transitions, 3995 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 02:30:44,915 INFO L231 Difference]: Finished difference. Result has 457 places, 347 transitions, 3411 flow [2024-06-28 02:30:44,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3153, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3411, PETRI_PLACES=457, PETRI_TRANSITIONS=347} [2024-06-28 02:30:44,915 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 426 predicate places. [2024-06-28 02:30:44,915 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 347 transitions, 3411 flow [2024-06-28 02:30:44,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:44,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:44,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:44,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-28 02:30:44,916 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:44,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:44,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1892301928, now seen corresponding path program 18 times [2024-06-28 02:30:44,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:44,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160520879] [2024-06-28 02:30:44,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:44,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:46,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:46,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160520879] [2024-06-28 02:30:46,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160520879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:46,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:46,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:30:46,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067988006] [2024-06-28 02:30:46,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:46,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:30:46,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:46,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:30:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:30:46,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:46,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 347 transitions, 3411 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:46,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:46,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:46,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:47,555 INFO L124 PetriNetUnfolderBase]: 1090/2069 cut-off events. [2024-06-28 02:30:47,555 INFO L125 PetriNetUnfolderBase]: For 149942/149942 co-relation queries the response was YES. [2024-06-28 02:30:47,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10179 conditions, 2069 events. 1090/2069 cut-off events. For 149942/149942 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 13023 event pairs, 209 based on Foata normal form. 10/2079 useless extension candidates. Maximal degree in co-relation 9982. Up to 1505 conditions per place. [2024-06-28 02:30:47,587 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 264 selfloop transitions, 98 changer transitions 9/373 dead transitions. [2024-06-28 02:30:47,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 373 transitions, 4263 flow [2024-06-28 02:30:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:30:47,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:30:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 02:30:47,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 02:30:47,588 INFO L175 Difference]: Start difference. First operand has 457 places, 347 transitions, 3411 flow. Second operand 12 states and 136 transitions. [2024-06-28 02:30:47,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 373 transitions, 4263 flow [2024-06-28 02:30:48,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 373 transitions, 4015 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 02:30:48,505 INFO L231 Difference]: Finished difference. Result has 460 places, 344 transitions, 3344 flow [2024-06-28 02:30:48,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3163, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3344, PETRI_PLACES=460, PETRI_TRANSITIONS=344} [2024-06-28 02:30:48,505 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 429 predicate places. [2024-06-28 02:30:48,505 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 344 transitions, 3344 flow [2024-06-28 02:30:48,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:48,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:48,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:48,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-28 02:30:48,506 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:48,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:48,506 INFO L85 PathProgramCache]: Analyzing trace with hash -7098970, now seen corresponding path program 19 times [2024-06-28 02:30:48,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:48,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923303630] [2024-06-28 02:30:48,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:48,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:50,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:50,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:50,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923303630] [2024-06-28 02:30:50,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923303630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:50,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:50,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:30:50,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386585919] [2024-06-28 02:30:50,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:50,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:30:50,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:50,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:30:50,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:30:50,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:50,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 344 transitions, 3344 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:50,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:50,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:50,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:51,214 INFO L124 PetriNetUnfolderBase]: 1084/2063 cut-off events. [2024-06-28 02:30:51,215 INFO L125 PetriNetUnfolderBase]: For 166026/166026 co-relation queries the response was YES. [2024-06-28 02:30:51,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10152 conditions, 2063 events. 1084/2063 cut-off events. For 166026/166026 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 13019 event pairs, 199 based on Foata normal form. 12/2075 useless extension candidates. Maximal degree in co-relation 9954. Up to 1463 conditions per place. [2024-06-28 02:30:51,244 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 240 selfloop transitions, 124 changer transitions 11/377 dead transitions. [2024-06-28 02:30:51,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 377 transitions, 4284 flow [2024-06-28 02:30:51,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:30:51,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:30:51,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-28 02:30:51,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629807692307692 [2024-06-28 02:30:51,249 INFO L175 Difference]: Start difference. First operand has 460 places, 344 transitions, 3344 flow. Second operand 13 states and 151 transitions. [2024-06-28 02:30:51,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 377 transitions, 4284 flow [2024-06-28 02:30:52,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 377 transitions, 4082 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 02:30:52,034 INFO L231 Difference]: Finished difference. Result has 459 places, 341 transitions, 3419 flow [2024-06-28 02:30:52,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3142, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3419, PETRI_PLACES=459, PETRI_TRANSITIONS=341} [2024-06-28 02:30:52,035 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 428 predicate places. [2024-06-28 02:30:52,035 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 341 transitions, 3419 flow [2024-06-28 02:30:52,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:52,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:52,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:52,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-28 02:30:52,035 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:52,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:52,036 INFO L85 PathProgramCache]: Analyzing trace with hash 230299928, now seen corresponding path program 20 times [2024-06-28 02:30:52,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:52,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320605860] [2024-06-28 02:30:52,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:52,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:53,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:53,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320605860] [2024-06-28 02:30:53,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320605860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:53,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:53,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:30:53,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761792198] [2024-06-28 02:30:53,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:53,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:30:53,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:53,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:30:53,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:30:53,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:53,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 341 transitions, 3419 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:53,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:53,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:53,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:54,247 INFO L124 PetriNetUnfolderBase]: 1104/2107 cut-off events. [2024-06-28 02:30:54,247 INFO L125 PetriNetUnfolderBase]: For 215581/215581 co-relation queries the response was YES. [2024-06-28 02:30:54,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11903 conditions, 2107 events. 1104/2107 cut-off events. For 215581/215581 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 13262 event pairs, 199 based on Foata normal form. 8/2115 useless extension candidates. Maximal degree in co-relation 11706. Up to 1195 conditions per place. [2024-06-28 02:30:54,273 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 158 changer transitions 8/374 dead transitions. [2024-06-28 02:30:54,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 374 transitions, 4605 flow [2024-06-28 02:30:54,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:30:54,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:30:54,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 02:30:54,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-28 02:30:54,275 INFO L175 Difference]: Start difference. First operand has 459 places, 341 transitions, 3419 flow. Second operand 11 states and 138 transitions. [2024-06-28 02:30:54,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 374 transitions, 4605 flow [2024-06-28 02:30:55,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 374 transitions, 4293 flow, removed 29 selfloop flow, removed 13 redundant places. [2024-06-28 02:30:55,390 INFO L231 Difference]: Finished difference. Result has 456 places, 340 transitions, 3476 flow [2024-06-28 02:30:55,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3109, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3476, PETRI_PLACES=456, PETRI_TRANSITIONS=340} [2024-06-28 02:30:55,391 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 425 predicate places. [2024-06-28 02:30:55,391 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 340 transitions, 3476 flow [2024-06-28 02:30:55,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:55,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:55,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:55,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-28 02:30:55,391 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:55,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:55,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1946850396, now seen corresponding path program 21 times [2024-06-28 02:30:55,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:55,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813811155] [2024-06-28 02:30:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:55,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:56,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:56,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813811155] [2024-06-28 02:30:56,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813811155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:56,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:56,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:30:56,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582151989] [2024-06-28 02:30:56,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:56,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:30:56,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:56,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:30:56,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:30:56,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:56,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 340 transitions, 3476 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:56,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:56,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:56,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:57,555 INFO L124 PetriNetUnfolderBase]: 1064/2031 cut-off events. [2024-06-28 02:30:57,556 INFO L125 PetriNetUnfolderBase]: For 163577/163577 co-relation queries the response was YES. [2024-06-28 02:30:57,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10195 conditions, 2031 events. 1064/2031 cut-off events. For 163577/163577 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 12806 event pairs, 189 based on Foata normal form. 12/2043 useless extension candidates. Maximal degree in co-relation 9998. Up to 1193 conditions per place. [2024-06-28 02:30:57,584 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 200 selfloop transitions, 156 changer transitions 8/366 dead transitions. [2024-06-28 02:30:57,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 366 transitions, 4320 flow [2024-06-28 02:30:57,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:30:57,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:30:57,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 02:30:57,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:30:57,585 INFO L175 Difference]: Start difference. First operand has 456 places, 340 transitions, 3476 flow. Second operand 11 states and 132 transitions. [2024-06-28 02:30:57,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 366 transitions, 4320 flow [2024-06-28 02:30:58,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 366 transitions, 3962 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-28 02:30:58,327 INFO L231 Difference]: Finished difference. Result has 455 places, 336 transitions, 3403 flow [2024-06-28 02:30:58,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3118, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3403, PETRI_PLACES=455, PETRI_TRANSITIONS=336} [2024-06-28 02:30:58,327 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 424 predicate places. [2024-06-28 02:30:58,327 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 336 transitions, 3403 flow [2024-06-28 02:30:58,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:58,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:58,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:58,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-28 02:30:58,328 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:30:58,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:58,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1976892520, now seen corresponding path program 22 times [2024-06-28 02:30:58,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:58,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889890700] [2024-06-28 02:30:58,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:58,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:59,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:59,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:59,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889890700] [2024-06-28 02:30:59,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889890700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:59,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:59,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:30:59,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179592392] [2024-06-28 02:30:59,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:59,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:30:59,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:59,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:30:59,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:30:59,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:30:59,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 336 transitions, 3403 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:59,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:59,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:30:59,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:00,038 INFO L124 PetriNetUnfolderBase]: 1072/2051 cut-off events. [2024-06-28 02:31:00,038 INFO L125 PetriNetUnfolderBase]: For 186612/186612 co-relation queries the response was YES. [2024-06-28 02:31:00,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11186 conditions, 2051 events. 1072/2051 cut-off events. For 186612/186612 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 12868 event pairs, 201 based on Foata normal form. 8/2059 useless extension candidates. Maximal degree in co-relation 10990. Up to 933 conditions per place. [2024-06-28 02:31:00,067 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 202 selfloop transitions, 150 changer transitions 12/366 dead transitions. [2024-06-28 02:31:00,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 366 transitions, 4535 flow [2024-06-28 02:31:00,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:31:00,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:31:00,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 02:31:00,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-28 02:31:00,070 INFO L175 Difference]: Start difference. First operand has 455 places, 336 transitions, 3403 flow. Second operand 11 states and 131 transitions. [2024-06-28 02:31:00,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 366 transitions, 4535 flow [2024-06-28 02:31:00,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 366 transitions, 4201 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 02:31:00,971 INFO L231 Difference]: Finished difference. Result has 452 places, 332 transitions, 3347 flow [2024-06-28 02:31:00,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3069, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3347, PETRI_PLACES=452, PETRI_TRANSITIONS=332} [2024-06-28 02:31:00,971 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 421 predicate places. [2024-06-28 02:31:00,971 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 332 transitions, 3347 flow [2024-06-28 02:31:00,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:00,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:00,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:00,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-28 02:31:00,972 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:00,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:00,972 INFO L85 PathProgramCache]: Analyzing trace with hash -83399302, now seen corresponding path program 23 times [2024-06-28 02:31:00,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:00,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111740889] [2024-06-28 02:31:00,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:00,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:02,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:02,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:02,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111740889] [2024-06-28 02:31:02,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111740889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:02,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:02,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:31:02,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603659025] [2024-06-28 02:31:02,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:02,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:31:02,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:02,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:31:02,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:31:02,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:02,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 332 transitions, 3347 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:02,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:02,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:02,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:03,369 INFO L124 PetriNetUnfolderBase]: 1086/2081 cut-off events. [2024-06-28 02:31:03,369 INFO L125 PetriNetUnfolderBase]: For 253926/253926 co-relation queries the response was YES. [2024-06-28 02:31:03,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12419 conditions, 2081 events. 1086/2081 cut-off events. For 253926/253926 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 13031 event pairs, 204 based on Foata normal form. 8/2089 useless extension candidates. Maximal degree in co-relation 12224. Up to 1187 conditions per place. [2024-06-28 02:31:03,396 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 204 selfloop transitions, 152 changer transitions 8/366 dead transitions. [2024-06-28 02:31:03,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 366 transitions, 4469 flow [2024-06-28 02:31:03,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:03,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 02:31:03,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:31:03,398 INFO L175 Difference]: Start difference. First operand has 452 places, 332 transitions, 3347 flow. Second operand 12 states and 144 transitions. [2024-06-28 02:31:03,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 366 transitions, 4469 flow [2024-06-28 02:31:04,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 366 transitions, 4194 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 02:31:04,567 INFO L231 Difference]: Finished difference. Result has 449 places, 330 transitions, 3372 flow [2024-06-28 02:31:04,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3078, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3372, PETRI_PLACES=449, PETRI_TRANSITIONS=330} [2024-06-28 02:31:04,568 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 418 predicate places. [2024-06-28 02:31:04,568 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 330 transitions, 3372 flow [2024-06-28 02:31:04,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:04,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:04,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:04,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-28 02:31:04,568 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:04,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:04,569 INFO L85 PathProgramCache]: Analyzing trace with hash 646948300, now seen corresponding path program 24 times [2024-06-28 02:31:04,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:04,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190478820] [2024-06-28 02:31:04,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:04,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:06,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:06,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190478820] [2024-06-28 02:31:06,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190478820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:06,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:06,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:31:06,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170852851] [2024-06-28 02:31:06,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:06,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:31:06,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:06,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:31:06,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:31:06,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:06,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 330 transitions, 3372 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:06,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:06,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:06,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:07,317 INFO L124 PetriNetUnfolderBase]: 1078/2068 cut-off events. [2024-06-28 02:31:07,317 INFO L125 PetriNetUnfolderBase]: For 258283/258283 co-relation queries the response was YES. [2024-06-28 02:31:07,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12412 conditions, 2068 events. 1078/2068 cut-off events. For 258283/258283 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 12952 event pairs, 472 based on Foata normal form. 10/2078 useless extension candidates. Maximal degree in co-relation 12219. Up to 1959 conditions per place. [2024-06-28 02:31:07,346 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 320 selfloop transitions, 19 changer transitions 11/352 dead transitions. [2024-06-28 02:31:07,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 352 transitions, 4162 flow [2024-06-28 02:31:07,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 02:31:07,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 02:31:07,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 134 transitions. [2024-06-28 02:31:07,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29910714285714285 [2024-06-28 02:31:07,355 INFO L175 Difference]: Start difference. First operand has 449 places, 330 transitions, 3372 flow. Second operand 14 states and 134 transitions. [2024-06-28 02:31:07,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 352 transitions, 4162 flow [2024-06-28 02:31:08,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 352 transitions, 3858 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:31:08,533 INFO L231 Difference]: Finished difference. Result has 450 places, 326 transitions, 3084 flow [2024-06-28 02:31:08,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3068, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3084, PETRI_PLACES=450, PETRI_TRANSITIONS=326} [2024-06-28 02:31:08,534 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 419 predicate places. [2024-06-28 02:31:08,534 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 326 transitions, 3084 flow [2024-06-28 02:31:08,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:08,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:08,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:08,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-28 02:31:08,535 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:08,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:08,535 INFO L85 PathProgramCache]: Analyzing trace with hash 391167866, now seen corresponding path program 43 times [2024-06-28 02:31:08,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:08,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232076631] [2024-06-28 02:31:08,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:08,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:10,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:10,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:10,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232076631] [2024-06-28 02:31:10,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232076631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:10,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:10,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:31:10,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82844336] [2024-06-28 02:31:10,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:10,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:31:10,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:10,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:31:10,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:31:10,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:10,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 326 transitions, 3084 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:10,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:10,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:10,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:10,811 INFO L124 PetriNetUnfolderBase]: 1054/2021 cut-off events. [2024-06-28 02:31:10,812 INFO L125 PetriNetUnfolderBase]: For 206147/206147 co-relation queries the response was YES. [2024-06-28 02:31:10,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11920 conditions, 2021 events. 1054/2021 cut-off events. For 206147/206147 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 12609 event pairs, 218 based on Foata normal form. 2/2023 useless extension candidates. Maximal degree in co-relation 11728. Up to 1507 conditions per place. [2024-06-28 02:31:10,840 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 228 selfloop transitions, 118 changer transitions 0/348 dead transitions. [2024-06-28 02:31:10,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 348 transitions, 3904 flow [2024-06-28 02:31:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:31:10,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:31:10,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 02:31:10,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-28 02:31:10,841 INFO L175 Difference]: Start difference. First operand has 450 places, 326 transitions, 3084 flow. Second operand 11 states and 123 transitions. [2024-06-28 02:31:10,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 348 transitions, 3904 flow [2024-06-28 02:31:11,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 348 transitions, 3858 flow, removed 3 selfloop flow, removed 15 redundant places. [2024-06-28 02:31:11,994 INFO L231 Difference]: Finished difference. Result has 443 places, 327 transitions, 3336 flow [2024-06-28 02:31:11,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3038, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3336, PETRI_PLACES=443, PETRI_TRANSITIONS=327} [2024-06-28 02:31:11,994 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 412 predicate places. [2024-06-28 02:31:11,994 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 327 transitions, 3336 flow [2024-06-28 02:31:11,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:11,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:11,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:11,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-28 02:31:11,994 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:11,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:11,995 INFO L85 PathProgramCache]: Analyzing trace with hash -83668072, now seen corresponding path program 25 times [2024-06-28 02:31:11,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:11,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059861894] [2024-06-28 02:31:11,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:11,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:13,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:13,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:13,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059861894] [2024-06-28 02:31:13,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059861894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:13,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:13,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:31:13,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545833917] [2024-06-28 02:31:13,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:13,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:31:13,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:13,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:31:13,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:31:13,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:13,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 327 transitions, 3336 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:13,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:13,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:13,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:14,259 INFO L124 PetriNetUnfolderBase]: 1049/2017 cut-off events. [2024-06-28 02:31:14,259 INFO L125 PetriNetUnfolderBase]: For 224093/224093 co-relation queries the response was YES. [2024-06-28 02:31:14,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11043 conditions, 2017 events. 1049/2017 cut-off events. For 224093/224093 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 12630 event pairs, 461 based on Foata normal form. 16/2033 useless extension candidates. Maximal degree in co-relation 10853. Up to 1898 conditions per place. [2024-06-28 02:31:14,288 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 313 selfloop transitions, 10 changer transitions 21/346 dead transitions. [2024-06-28 02:31:14,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 346 transitions, 4102 flow [2024-06-28 02:31:14,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:14,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:14,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-28 02:31:14,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2024-06-28 02:31:14,289 INFO L175 Difference]: Start difference. First operand has 443 places, 327 transitions, 3336 flow. Second operand 12 states and 116 transitions. [2024-06-28 02:31:14,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 346 transitions, 4102 flow [2024-06-28 02:31:15,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 346 transitions, 3814 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 02:31:15,366 INFO L231 Difference]: Finished difference. Result has 446 places, 319 transitions, 3017 flow [2024-06-28 02:31:15,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3048, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3017, PETRI_PLACES=446, PETRI_TRANSITIONS=319} [2024-06-28 02:31:15,366 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-28 02:31:15,366 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 319 transitions, 3017 flow [2024-06-28 02:31:15,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:15,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:15,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:15,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-28 02:31:15,367 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:15,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:15,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1157633218, now seen corresponding path program 44 times [2024-06-28 02:31:15,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:15,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015324296] [2024-06-28 02:31:15,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:15,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:16,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:16,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:16,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015324296] [2024-06-28 02:31:16,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015324296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:16,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:16,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:31:16,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567690207] [2024-06-28 02:31:16,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:16,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:31:16,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:16,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:31:16,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:31:17,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:17,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 319 transitions, 3017 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:17,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:17,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:17,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:17,670 INFO L124 PetriNetUnfolderBase]: 1008/1931 cut-off events. [2024-06-28 02:31:17,670 INFO L125 PetriNetUnfolderBase]: For 142963/142963 co-relation queries the response was YES. [2024-06-28 02:31:17,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10434 conditions, 1931 events. 1008/1931 cut-off events. For 142963/142963 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 11974 event pairs, 197 based on Foata normal form. 2/1933 useless extension candidates. Maximal degree in co-relation 10243. Up to 1417 conditions per place. [2024-06-28 02:31:17,697 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 223 selfloop transitions, 116 changer transitions 0/341 dead transitions. [2024-06-28 02:31:17,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 341 transitions, 3823 flow [2024-06-28 02:31:17,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:31:17,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:31:17,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:31:17,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:31:17,698 INFO L175 Difference]: Start difference. First operand has 446 places, 319 transitions, 3017 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:31:17,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 341 transitions, 3823 flow [2024-06-28 02:31:18,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 341 transitions, 3789 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 02:31:18,725 INFO L231 Difference]: Finished difference. Result has 434 places, 320 transitions, 3279 flow [2024-06-28 02:31:18,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2985, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3279, PETRI_PLACES=434, PETRI_TRANSITIONS=320} [2024-06-28 02:31:18,726 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 403 predicate places. [2024-06-28 02:31:18,726 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 320 transitions, 3279 flow [2024-06-28 02:31:18,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:18,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:18,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:18,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-28 02:31:18,727 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:18,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:18,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1930582680, now seen corresponding path program 26 times [2024-06-28 02:31:18,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:18,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639874872] [2024-06-28 02:31:18,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:18,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:21,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:21,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639874872] [2024-06-28 02:31:21,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639874872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:21,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:21,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:31:21,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744172318] [2024-06-28 02:31:21,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:21,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:31:21,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:21,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:31:21,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:31:21,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:21,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 320 transitions, 3279 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:21,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:21,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:21,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:22,092 INFO L124 PetriNetUnfolderBase]: 1024/1967 cut-off events. [2024-06-28 02:31:22,092 INFO L125 PetriNetUnfolderBase]: For 177982/177982 co-relation queries the response was YES. [2024-06-28 02:31:22,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10802 conditions, 1967 events. 1024/1967 cut-off events. For 177982/177982 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12202 event pairs, 229 based on Foata normal form. 10/1977 useless extension candidates. Maximal degree in co-relation 10616. Up to 1341 conditions per place. [2024-06-28 02:31:22,119 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 99 changer transitions 13/350 dead transitions. [2024-06-28 02:31:22,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 350 transitions, 4107 flow [2024-06-28 02:31:22,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:22,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-28 02:31:22,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-28 02:31:22,120 INFO L175 Difference]: Start difference. First operand has 434 places, 320 transitions, 3279 flow. Second operand 12 states and 142 transitions. [2024-06-28 02:31:22,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 350 transitions, 4107 flow [2024-06-28 02:31:22,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 350 transitions, 3823 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 02:31:22,949 INFO L231 Difference]: Finished difference. Result has 437 places, 316 transitions, 3168 flow [2024-06-28 02:31:22,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2995, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3168, PETRI_PLACES=437, PETRI_TRANSITIONS=316} [2024-06-28 02:31:22,949 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 406 predicate places. [2024-06-28 02:31:22,949 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 316 transitions, 3168 flow [2024-06-28 02:31:22,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:22,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:22,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:22,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-28 02:31:22,950 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:22,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:22,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1150268052, now seen corresponding path program 27 times [2024-06-28 02:31:22,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:22,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5495071] [2024-06-28 02:31:22,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:22,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:24,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:24,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5495071] [2024-06-28 02:31:24,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5495071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:24,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:24,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:31:24,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106860729] [2024-06-28 02:31:24,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:24,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:31:24,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:24,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:31:24,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:31:24,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:24,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 316 transitions, 3168 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:24,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:24,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:24,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:25,879 INFO L124 PetriNetUnfolderBase]: 1012/1947 cut-off events. [2024-06-28 02:31:25,879 INFO L125 PetriNetUnfolderBase]: For 179838/179838 co-relation queries the response was YES. [2024-06-28 02:31:25,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10561 conditions, 1947 events. 1012/1947 cut-off events. For 179838/179838 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 12093 event pairs, 195 based on Foata normal form. 10/1957 useless extension candidates. Maximal degree in co-relation 10374. Up to 1367 conditions per place. [2024-06-28 02:31:25,907 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 214 selfloop transitions, 118 changer transitions 11/345 dead transitions. [2024-06-28 02:31:25,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 345 transitions, 3980 flow [2024-06-28 02:31:25,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 02:31:25,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-28 02:31:25,908 INFO L175 Difference]: Start difference. First operand has 437 places, 316 transitions, 3168 flow. Second operand 12 states and 139 transitions. [2024-06-28 02:31:25,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 345 transitions, 3980 flow [2024-06-28 02:31:26,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 345 transitions, 3768 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 02:31:26,777 INFO L231 Difference]: Finished difference. Result has 433 places, 313 transitions, 3176 flow [2024-06-28 02:31:26,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3176, PETRI_PLACES=433, PETRI_TRANSITIONS=313} [2024-06-28 02:31:26,777 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2024-06-28 02:31:26,778 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 313 transitions, 3176 flow [2024-06-28 02:31:26,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:26,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:26,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:26,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-28 02:31:26,778 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:26,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:26,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1157417892, now seen corresponding path program 28 times [2024-06-28 02:31:26,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:26,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220257101] [2024-06-28 02:31:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:26,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:28,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:28,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:28,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220257101] [2024-06-28 02:31:28,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220257101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:28,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:28,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:31:28,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974856613] [2024-06-28 02:31:28,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:28,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:31:28,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:28,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:31:28,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:31:28,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:28,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 313 transitions, 3176 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:28,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:28,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:28,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:29,112 INFO L124 PetriNetUnfolderBase]: 1002/1933 cut-off events. [2024-06-28 02:31:29,113 INFO L125 PetriNetUnfolderBase]: For 173382/173382 co-relation queries the response was YES. [2024-06-28 02:31:29,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10529 conditions, 1933 events. 1002/1933 cut-off events. For 173382/173382 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 12004 event pairs, 203 based on Foata normal form. 10/1943 useless extension candidates. Maximal degree in co-relation 10344. Up to 1169 conditions per place. [2024-06-28 02:31:29,140 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 123 changer transitions 7/337 dead transitions. [2024-06-28 02:31:29,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 337 transitions, 3950 flow [2024-06-28 02:31:29,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:31:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:31:29,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 02:31:29,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-28 02:31:29,141 INFO L175 Difference]: Start difference. First operand has 433 places, 313 transitions, 3176 flow. Second operand 11 states and 127 transitions. [2024-06-28 02:31:29,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 337 transitions, 3950 flow [2024-06-28 02:31:29,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 337 transitions, 3710 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:31:29,980 INFO L231 Difference]: Finished difference. Result has 430 places, 310 transitions, 3168 flow [2024-06-28 02:31:29,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2936, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3168, PETRI_PLACES=430, PETRI_TRANSITIONS=310} [2024-06-28 02:31:29,980 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2024-06-28 02:31:29,980 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 310 transitions, 3168 flow [2024-06-28 02:31:29,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:29,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:29,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:29,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-28 02:31:29,981 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:29,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:29,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1930315274, now seen corresponding path program 45 times [2024-06-28 02:31:29,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:29,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640338523] [2024-06-28 02:31:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:29,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:31,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:31,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640338523] [2024-06-28 02:31:31,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640338523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:31,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:31,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:31:31,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425505497] [2024-06-28 02:31:31,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:31,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:31:31,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:31,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:31:31,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:31:31,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:31,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 310 transitions, 3168 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:31,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:31,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:31,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:32,349 INFO L124 PetriNetUnfolderBase]: 980/1891 cut-off events. [2024-06-28 02:31:32,349 INFO L125 PetriNetUnfolderBase]: For 129416/129416 co-relation queries the response was YES. [2024-06-28 02:31:32,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10440 conditions, 1891 events. 980/1891 cut-off events. For 129416/129416 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 11741 event pairs, 223 based on Foata normal form. 2/1893 useless extension candidates. Maximal degree in co-relation 10256. Up to 1347 conditions per place. [2024-06-28 02:31:32,374 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 239 selfloop transitions, 93 changer transitions 0/334 dead transitions. [2024-06-28 02:31:32,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 334 transitions, 3972 flow [2024-06-28 02:31:32,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:31:32,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:31:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 02:31:32,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 02:31:32,375 INFO L175 Difference]: Start difference. First operand has 430 places, 310 transitions, 3168 flow. Second operand 11 states and 128 transitions. [2024-06-28 02:31:32,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 334 transitions, 3972 flow [2024-06-28 02:31:33,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 334 transitions, 3720 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 02:31:33,119 INFO L231 Difference]: Finished difference. Result has 428 places, 311 transitions, 3166 flow [2024-06-28 02:31:33,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2916, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3166, PETRI_PLACES=428, PETRI_TRANSITIONS=311} [2024-06-28 02:31:33,119 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-28 02:31:33,119 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 311 transitions, 3166 flow [2024-06-28 02:31:33,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:33,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:33,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:33,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2024-06-28 02:31:33,120 INFO L420 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:33,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:33,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1930323210, now seen corresponding path program 29 times [2024-06-28 02:31:33,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:33,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661394005] [2024-06-28 02:31:33,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:33,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:34,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:34,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661394005] [2024-06-28 02:31:34,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661394005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:34,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:34,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:31:34,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836428081] [2024-06-28 02:31:34,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:34,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:31:34,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:34,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:31:34,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:31:34,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:34,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 311 transitions, 3166 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:34,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:34,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:34,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:35,824 INFO L124 PetriNetUnfolderBase]: 996/1927 cut-off events. [2024-06-28 02:31:35,824 INFO L125 PetriNetUnfolderBase]: For 168986/168986 co-relation queries the response was YES. [2024-06-28 02:31:35,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10481 conditions, 1927 events. 996/1927 cut-off events. For 168986/168986 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 12006 event pairs, 223 based on Foata normal form. 10/1937 useless extension candidates. Maximal degree in co-relation 10298. Up to 1309 conditions per place. [2024-06-28 02:31:35,845 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 95 changer transitions 7/338 dead transitions. [2024-06-28 02:31:35,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 338 transitions, 3958 flow [2024-06-28 02:31:35,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:31:35,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:31:35,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:31:35,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-28 02:31:35,846 INFO L175 Difference]: Start difference. First operand has 428 places, 311 transitions, 3166 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:31:35,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 338 transitions, 3958 flow [2024-06-28 02:31:36,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 338 transitions, 3718 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 02:31:36,750 INFO L231 Difference]: Finished difference. Result has 430 places, 308 transitions, 3099 flow [2024-06-28 02:31:36,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3099, PETRI_PLACES=430, PETRI_TRANSITIONS=308} [2024-06-28 02:31:36,750 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2024-06-28 02:31:36,750 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 308 transitions, 3099 flow [2024-06-28 02:31:36,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:36,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:36,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:36,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2024-06-28 02:31:36,751 INFO L420 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:36,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:36,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1922963624, now seen corresponding path program 46 times [2024-06-28 02:31:36,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:36,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852159058] [2024-06-28 02:31:36,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:36,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:38,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:38,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852159058] [2024-06-28 02:31:38,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852159058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:38,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:38,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:31:38,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961302056] [2024-06-28 02:31:38,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:38,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:31:38,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:38,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:31:38,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:31:38,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:38,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 308 transitions, 3099 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:38,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:38,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:38,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:39,040 INFO L124 PetriNetUnfolderBase]: 974/1885 cut-off events. [2024-06-28 02:31:39,041 INFO L125 PetriNetUnfolderBase]: For 129646/129646 co-relation queries the response was YES. [2024-06-28 02:31:39,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10338 conditions, 1885 events. 974/1885 cut-off events. For 129646/129646 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 11739 event pairs, 217 based on Foata normal form. 2/1887 useless extension candidates. Maximal degree in co-relation 10154. Up to 1371 conditions per place. [2024-06-28 02:31:39,066 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 242 selfloop transitions, 87 changer transitions 0/331 dead transitions. [2024-06-28 02:31:39,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 331 transitions, 3893 flow [2024-06-28 02:31:39,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:31:39,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:31:39,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 02:31:39,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-28 02:31:39,067 INFO L175 Difference]: Start difference. First operand has 430 places, 308 transitions, 3099 flow. Second operand 11 states and 126 transitions. [2024-06-28 02:31:39,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 331 transitions, 3893 flow [2024-06-28 02:31:39,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 331 transitions, 3697 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 02:31:39,835 INFO L231 Difference]: Finished difference. Result has 428 places, 309 transitions, 3143 flow [2024-06-28 02:31:39,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2903, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3143, PETRI_PLACES=428, PETRI_TRANSITIONS=309} [2024-06-28 02:31:39,835 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-28 02:31:39,835 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 309 transitions, 3143 flow [2024-06-28 02:31:39,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:39,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:39,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:39,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2024-06-28 02:31:39,836 INFO L420 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:39,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:39,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1922958044, now seen corresponding path program 47 times [2024-06-28 02:31:39,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:39,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179688520] [2024-06-28 02:31:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:39,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:41,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:41,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179688520] [2024-06-28 02:31:41,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179688520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:41,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:41,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:31:41,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762260867] [2024-06-28 02:31:41,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:41,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:31:41,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:41,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:31:41,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:31:41,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:41,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 309 transitions, 3143 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:41,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:41,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:41,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:42,641 INFO L124 PetriNetUnfolderBase]: 1022/1984 cut-off events. [2024-06-28 02:31:42,641 INFO L125 PetriNetUnfolderBase]: For 208957/208957 co-relation queries the response was YES. [2024-06-28 02:31:42,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12394 conditions, 1984 events. 1022/1984 cut-off events. For 208957/208957 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 12365 event pairs, 243 based on Foata normal form. 2/1986 useless extension candidates. Maximal degree in co-relation 12211. Up to 1343 conditions per place. [2024-06-28 02:31:42,673 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 246 selfloop transitions, 93 changer transitions 0/341 dead transitions. [2024-06-28 02:31:42,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 341 transitions, 4223 flow [2024-06-28 02:31:42,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:31:42,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:31:42,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-28 02:31:42,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629807692307692 [2024-06-28 02:31:42,674 INFO L175 Difference]: Start difference. First operand has 428 places, 309 transitions, 3143 flow. Second operand 13 states and 151 transitions. [2024-06-28 02:31:42,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 341 transitions, 4223 flow [2024-06-28 02:31:43,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 341 transitions, 3993 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 02:31:43,847 INFO L231 Difference]: Finished difference. Result has 432 places, 310 transitions, 3167 flow [2024-06-28 02:31:43,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2913, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3167, PETRI_PLACES=432, PETRI_TRANSITIONS=310} [2024-06-28 02:31:43,848 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 401 predicate places. [2024-06-28 02:31:43,848 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 310 transitions, 3167 flow [2024-06-28 02:31:43,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:43,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:43,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:43,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2024-06-28 02:31:43,853 INFO L420 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:43,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:43,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1923173370, now seen corresponding path program 30 times [2024-06-28 02:31:43,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:43,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44438110] [2024-06-28 02:31:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:43,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:45,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:45,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44438110] [2024-06-28 02:31:45,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44438110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:45,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:45,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:31:45,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820259652] [2024-06-28 02:31:45,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:45,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:31:45,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:45,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:31:45,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:31:45,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:45,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 310 transitions, 3167 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:45,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:45,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:45,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:46,233 INFO L124 PetriNetUnfolderBase]: 1024/1995 cut-off events. [2024-06-28 02:31:46,233 INFO L125 PetriNetUnfolderBase]: For 233482/233482 co-relation queries the response was YES. [2024-06-28 02:31:46,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11927 conditions, 1995 events. 1024/1995 cut-off events. For 233482/233482 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 12476 event pairs, 247 based on Foata normal form. 10/2005 useless extension candidates. Maximal degree in co-relation 11743. Up to 1431 conditions per place. [2024-06-28 02:31:46,260 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 241 selfloop transitions, 86 changer transitions 9/338 dead transitions. [2024-06-28 02:31:46,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 338 transitions, 3959 flow [2024-06-28 02:31:46,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:46,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:46,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 02:31:46,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-28 02:31:46,261 INFO L175 Difference]: Start difference. First operand has 432 places, 310 transitions, 3167 flow. Second operand 12 states and 139 transitions. [2024-06-28 02:31:46,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 338 transitions, 3959 flow [2024-06-28 02:31:47,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 338 transitions, 3715 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-06-28 02:31:47,358 INFO L231 Difference]: Finished difference. Result has 433 places, 307 transitions, 3076 flow [2024-06-28 02:31:47,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2923, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3076, PETRI_PLACES=433, PETRI_TRANSITIONS=307} [2024-06-28 02:31:47,358 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2024-06-28 02:31:47,358 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 307 transitions, 3076 flow [2024-06-28 02:31:47,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:47,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:47,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:47,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2024-06-28 02:31:47,361 INFO L420 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:47,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:47,361 INFO L85 PathProgramCache]: Analyzing trace with hash 948800418, now seen corresponding path program 48 times [2024-06-28 02:31:47,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:47,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54972761] [2024-06-28 02:31:47,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:47,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:48,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:48,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54972761] [2024-06-28 02:31:48,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54972761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:48,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:48,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:31:48,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962473776] [2024-06-28 02:31:48,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:48,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:31:48,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:48,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:31:48,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:31:48,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:48,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 307 transitions, 3076 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:48,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:48,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:48,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:49,678 INFO L124 PetriNetUnfolderBase]: 972/1887 cut-off events. [2024-06-28 02:31:49,678 INFO L125 PetriNetUnfolderBase]: For 132653/132653 co-relation queries the response was YES. [2024-06-28 02:31:49,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10349 conditions, 1887 events. 972/1887 cut-off events. For 132653/132653 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 11798 event pairs, 219 based on Foata normal form. 2/1889 useless extension candidates. Maximal degree in co-relation 10164. Up to 1373 conditions per place. [2024-06-28 02:31:49,703 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 241 selfloop transitions, 86 changer transitions 0/329 dead transitions. [2024-06-28 02:31:49,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 329 transitions, 3864 flow [2024-06-28 02:31:49,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:31:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:31:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 02:31:49,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-28 02:31:49,704 INFO L175 Difference]: Start difference. First operand has 433 places, 307 transitions, 3076 flow. Second operand 11 states and 126 transitions. [2024-06-28 02:31:49,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 329 transitions, 3864 flow [2024-06-28 02:31:50,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 329 transitions, 3686 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 02:31:50,495 INFO L231 Difference]: Finished difference. Result has 430 places, 308 transitions, 3140 flow [2024-06-28 02:31:50,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2898, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3140, PETRI_PLACES=430, PETRI_TRANSITIONS=308} [2024-06-28 02:31:50,496 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2024-06-28 02:31:50,496 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 308 transitions, 3140 flow [2024-06-28 02:31:50,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:50,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:50,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:50,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2024-06-28 02:31:50,497 INFO L420 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:50,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:50,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1723656254, now seen corresponding path program 49 times [2024-06-28 02:31:50,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:50,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735949465] [2024-06-28 02:31:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:50,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:51,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:51,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:51,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735949465] [2024-06-28 02:31:51,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735949465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:51,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:51,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:31:51,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025045288] [2024-06-28 02:31:51,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:51,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:31:51,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:51,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:31:51,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:31:51,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:51,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 308 transitions, 3140 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:51,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:51,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:51,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:52,515 INFO L124 PetriNetUnfolderBase]: 976/1895 cut-off events. [2024-06-28 02:31:52,515 INFO L125 PetriNetUnfolderBase]: For 132649/132649 co-relation queries the response was YES. [2024-06-28 02:31:52,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10482 conditions, 1895 events. 976/1895 cut-off events. For 132649/132649 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11859 event pairs, 219 based on Foata normal form. 2/1897 useless extension candidates. Maximal degree in co-relation 10298. Up to 1381 conditions per place. [2024-06-28 02:31:52,541 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 243 selfloop transitions, 85 changer transitions 0/330 dead transitions. [2024-06-28 02:31:52,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 330 transitions, 3930 flow [2024-06-28 02:31:52,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:31:52,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:31:52,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 02:31:52,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-28 02:31:52,542 INFO L175 Difference]: Start difference. First operand has 430 places, 308 transitions, 3140 flow. Second operand 11 states and 125 transitions. [2024-06-28 02:31:52,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 330 transitions, 3930 flow [2024-06-28 02:31:53,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 330 transitions, 3676 flow, removed 35 selfloop flow, removed 12 redundant places. [2024-06-28 02:31:53,438 INFO L231 Difference]: Finished difference. Result has 429 places, 309 transitions, 3128 flow [2024-06-28 02:31:53,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2886, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3128, PETRI_PLACES=429, PETRI_TRANSITIONS=309} [2024-06-28 02:31:53,439 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 398 predicate places. [2024-06-28 02:31:53,439 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 309 transitions, 3128 flow [2024-06-28 02:31:53,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:53,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:53,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:53,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2024-06-28 02:31:53,440 INFO L420 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:53,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:53,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1044776390, now seen corresponding path program 50 times [2024-06-28 02:31:53,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:53,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582506924] [2024-06-28 02:31:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:53,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:54,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:54,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:54,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582506924] [2024-06-28 02:31:54,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582506924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:54,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:54,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:31:54,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491387135] [2024-06-28 02:31:54,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:54,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:31:54,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:54,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:31:54,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:31:54,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:54,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 309 transitions, 3128 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:54,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:54,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:54,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:55,601 INFO L124 PetriNetUnfolderBase]: 980/1903 cut-off events. [2024-06-28 02:31:55,601 INFO L125 PetriNetUnfolderBase]: For 135520/135520 co-relation queries the response was YES. [2024-06-28 02:31:55,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10504 conditions, 1903 events. 980/1903 cut-off events. For 135520/135520 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 11964 event pairs, 235 based on Foata normal form. 2/1905 useless extension candidates. Maximal degree in co-relation 10322. Up to 1177 conditions per place. [2024-06-28 02:31:55,625 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 231 selfloop transitions, 97 changer transitions 0/330 dead transitions. [2024-06-28 02:31:55,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 330 transitions, 3912 flow [2024-06-28 02:31:55,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:31:55,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:31:55,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 02:31:55,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-28 02:31:55,626 INFO L175 Difference]: Start difference. First operand has 429 places, 309 transitions, 3128 flow. Second operand 11 states and 125 transitions. [2024-06-28 02:31:55,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 330 transitions, 3912 flow [2024-06-28 02:31:56,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 330 transitions, 3680 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-28 02:31:56,441 INFO L231 Difference]: Finished difference. Result has 431 places, 310 transitions, 3164 flow [2024-06-28 02:31:56,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2896, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3164, PETRI_PLACES=431, PETRI_TRANSITIONS=310} [2024-06-28 02:31:56,441 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 400 predicate places. [2024-06-28 02:31:56,441 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 310 transitions, 3164 flow [2024-06-28 02:31:56,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:56,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:56,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:56,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2024-06-28 02:31:56,442 INFO L420 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:56,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:56,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1050498246, now seen corresponding path program 31 times [2024-06-28 02:31:56,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:56,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733057424] [2024-06-28 02:31:56,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:56,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:58,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:58,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:58,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733057424] [2024-06-28 02:31:58,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733057424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:58,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:58,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:31:58,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410525306] [2024-06-28 02:31:58,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:58,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:31:58,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:58,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:31:58,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:31:58,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:31:58,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 310 transitions, 3164 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:58,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:58,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:31:58,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:59,012 INFO L124 PetriNetUnfolderBase]: 996/1939 cut-off events. [2024-06-28 02:31:59,012 INFO L125 PetriNetUnfolderBase]: For 180142/180142 co-relation queries the response was YES. [2024-06-28 02:31:59,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10563 conditions, 1939 events. 996/1939 cut-off events. For 180142/180142 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 12192 event pairs, 227 based on Foata normal form. 10/1949 useless extension candidates. Maximal degree in co-relation 10380. Up to 1375 conditions per place. [2024-06-28 02:31:59,040 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 241 selfloop transitions, 85 changer transitions 9/337 dead transitions. [2024-06-28 02:31:59,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 337 transitions, 3948 flow [2024-06-28 02:31:59,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:31:59,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:31:59,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 02:31:59,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-28 02:31:59,041 INFO L175 Difference]: Start difference. First operand has 431 places, 310 transitions, 3164 flow. Second operand 12 states and 139 transitions. [2024-06-28 02:31:59,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 337 transitions, 3948 flow [2024-06-28 02:31:59,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 337 transitions, 3690 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-28 02:31:59,864 INFO L231 Difference]: Finished difference. Result has 434 places, 307 transitions, 3061 flow [2024-06-28 02:31:59,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2906, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3061, PETRI_PLACES=434, PETRI_TRANSITIONS=307} [2024-06-28 02:31:59,864 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 403 predicate places. [2024-06-28 02:31:59,865 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 307 transitions, 3061 flow [2024-06-28 02:31:59,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:59,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:59,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:59,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2024-06-28 02:31:59,865 INFO L420 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:31:59,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:59,865 INFO L85 PathProgramCache]: Analyzing trace with hash 48118086, now seen corresponding path program 51 times [2024-06-28 02:31:59,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:59,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918257113] [2024-06-28 02:31:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:59,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:01,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:01,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918257113] [2024-06-28 02:32:01,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918257113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:01,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:01,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:32:01,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268945542] [2024-06-28 02:32:01,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:01,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:32:01,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:01,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:32:01,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:32:01,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:01,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 307 transitions, 3061 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:01,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:01,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:01,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:02,749 INFO L124 PetriNetUnfolderBase]: 967/1884 cut-off events. [2024-06-28 02:32:02,749 INFO L125 PetriNetUnfolderBase]: For 124686/124686 co-relation queries the response was YES. [2024-06-28 02:32:02,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9962 conditions, 1884 events. 967/1884 cut-off events. For 124686/124686 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 11830 event pairs, 228 based on Foata normal form. 2/1886 useless extension candidates. Maximal degree in co-relation 9778. Up to 1370 conditions per place. [2024-06-28 02:32:02,774 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 236 selfloop transitions, 89 changer transitions 0/327 dead transitions. [2024-06-28 02:32:02,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 327 transitions, 3841 flow [2024-06-28 02:32:02,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:32:02,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:32:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:32:02,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 02:32:02,776 INFO L175 Difference]: Start difference. First operand has 434 places, 307 transitions, 3061 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:32:02,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 327 transitions, 3841 flow [2024-06-28 02:32:03,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 327 transitions, 3658 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-28 02:32:03,449 INFO L231 Difference]: Finished difference. Result has 430 places, 308 transitions, 3132 flow [2024-06-28 02:32:03,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2878, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3132, PETRI_PLACES=430, PETRI_TRANSITIONS=308} [2024-06-28 02:32:03,449 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2024-06-28 02:32:03,449 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 308 transitions, 3132 flow [2024-06-28 02:32:03,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:03,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:03,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:03,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2024-06-28 02:32:03,450 INFO L420 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:03,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:03,450 INFO L85 PathProgramCache]: Analyzing trace with hash 726848220, now seen corresponding path program 52 times [2024-06-28 02:32:03,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:03,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419203758] [2024-06-28 02:32:03,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:03,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:04,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:04,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419203758] [2024-06-28 02:32:04,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419203758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:04,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:04,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:32:04,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90960644] [2024-06-28 02:32:04,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:04,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:32:04,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:04,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:32:04,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:32:05,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:05,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 308 transitions, 3132 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:05,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:05,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:05,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:05,748 INFO L124 PetriNetUnfolderBase]: 971/1892 cut-off events. [2024-06-28 02:32:05,749 INFO L125 PetriNetUnfolderBase]: For 125026/125026 co-relation queries the response was YES. [2024-06-28 02:32:05,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10103 conditions, 1892 events. 971/1892 cut-off events. For 125026/125026 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11899 event pairs, 228 based on Foata normal form. 2/1894 useless extension candidates. Maximal degree in co-relation 9920. Up to 1378 conditions per place. [2024-06-28 02:32:05,773 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 238 selfloop transitions, 88 changer transitions 0/328 dead transitions. [2024-06-28 02:32:05,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 328 transitions, 3914 flow [2024-06-28 02:32:05,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:32:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:32:05,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:32:05,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:32:05,774 INFO L175 Difference]: Start difference. First operand has 430 places, 308 transitions, 3132 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:32:05,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 328 transitions, 3914 flow [2024-06-28 02:32:06,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 328 transitions, 3670 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-28 02:32:06,546 INFO L231 Difference]: Finished difference. Result has 432 places, 309 transitions, 3142 flow [2024-06-28 02:32:06,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2888, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3142, PETRI_PLACES=432, PETRI_TRANSITIONS=309} [2024-06-28 02:32:06,547 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 401 predicate places. [2024-06-28 02:32:06,547 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 309 transitions, 3142 flow [2024-06-28 02:32:06,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:06,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:06,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:06,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2024-06-28 02:32:06,547 INFO L420 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:06,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:06,548 INFO L85 PathProgramCache]: Analyzing trace with hash -48157346, now seen corresponding path program 53 times [2024-06-28 02:32:06,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:06,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262255857] [2024-06-28 02:32:06,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:06,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:07,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:07,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:07,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262255857] [2024-06-28 02:32:07,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262255857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:07,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:07,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:32:07,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490437195] [2024-06-28 02:32:07,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:07,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:32:07,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:07,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:32:07,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:32:08,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:08,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 309 transitions, 3142 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:08,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:08,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:08,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:08,612 INFO L124 PetriNetUnfolderBase]: 975/1900 cut-off events. [2024-06-28 02:32:08,612 INFO L125 PetriNetUnfolderBase]: For 127666/127666 co-relation queries the response was YES. [2024-06-28 02:32:08,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10156 conditions, 1900 events. 975/1900 cut-off events. For 127666/127666 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 11948 event pairs, 226 based on Foata normal form. 2/1902 useless extension candidates. Maximal degree in co-relation 9972. Up to 1372 conditions per place. [2024-06-28 02:32:08,638 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 238 selfloop transitions, 89 changer transitions 0/329 dead transitions. [2024-06-28 02:32:08,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 329 transitions, 3926 flow [2024-06-28 02:32:08,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:32:08,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:32:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:32:08,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-28 02:32:08,639 INFO L175 Difference]: Start difference. First operand has 432 places, 309 transitions, 3142 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:32:08,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 329 transitions, 3926 flow [2024-06-28 02:32:09,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 329 transitions, 3682 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 02:32:09,397 INFO L231 Difference]: Finished difference. Result has 434 places, 310 transitions, 3156 flow [2024-06-28 02:32:09,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2898, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3156, PETRI_PLACES=434, PETRI_TRANSITIONS=310} [2024-06-28 02:32:09,397 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 403 predicate places. [2024-06-28 02:32:09,397 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 310 transitions, 3156 flow [2024-06-28 02:32:09,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:09,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:09,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:09,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2024-06-28 02:32:09,398 INFO L420 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:09,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:09,398 INFO L85 PathProgramCache]: Analyzing trace with hash 723129150, now seen corresponding path program 54 times [2024-06-28 02:32:09,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:09,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510499975] [2024-06-28 02:32:09,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:09,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:10,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:10,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:10,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510499975] [2024-06-28 02:32:10,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510499975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:10,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:10,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:32:10,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197291895] [2024-06-28 02:32:10,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:10,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:32:10,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:10,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:32:10,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:32:10,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:10,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 310 transitions, 3156 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:10,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:10,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:10,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:11,555 INFO L124 PetriNetUnfolderBase]: 972/1895 cut-off events. [2024-06-28 02:32:11,555 INFO L125 PetriNetUnfolderBase]: For 115854/115854 co-relation queries the response was YES. [2024-06-28 02:32:11,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9751 conditions, 1895 events. 972/1895 cut-off events. For 115854/115854 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 11993 event pairs, 211 based on Foata normal form. 2/1897 useless extension candidates. Maximal degree in co-relation 9566. Up to 1287 conditions per place. [2024-06-28 02:32:11,576 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 230 selfloop transitions, 97 changer transitions 0/329 dead transitions. [2024-06-28 02:32:11,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 329 transitions, 3864 flow [2024-06-28 02:32:11,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:32:11,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:32:11,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:32:11,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 02:32:11,577 INFO L175 Difference]: Start difference. First operand has 434 places, 310 transitions, 3156 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:32:11,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 329 transitions, 3864 flow [2024-06-28 02:32:12,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 329 transitions, 3616 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-28 02:32:12,485 INFO L231 Difference]: Finished difference. Result has 436 places, 310 transitions, 3106 flow [2024-06-28 02:32:12,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2908, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3106, PETRI_PLACES=436, PETRI_TRANSITIONS=310} [2024-06-28 02:32:12,485 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 405 predicate places. [2024-06-28 02:32:12,485 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 310 transitions, 3106 flow [2024-06-28 02:32:12,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:12,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:12,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:12,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2024-06-28 02:32:12,486 INFO L420 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:12,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:12,486 INFO L85 PathProgramCache]: Analyzing trace with hash 870954076, now seen corresponding path program 32 times [2024-06-28 02:32:12,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:12,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7962548] [2024-06-28 02:32:12,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:12,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:14,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:14,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:14,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7962548] [2024-06-28 02:32:14,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7962548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:14,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:14,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:32:14,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405256961] [2024-06-28 02:32:14,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:14,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:32:14,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:14,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:32:14,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:32:14,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:14,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 310 transitions, 3106 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:14,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:14,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:14,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:15,392 INFO L124 PetriNetUnfolderBase]: 974/1905 cut-off events. [2024-06-28 02:32:15,392 INFO L125 PetriNetUnfolderBase]: For 137394/137394 co-relation queries the response was YES. [2024-06-28 02:32:15,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9226 conditions, 1905 events. 974/1905 cut-off events. For 137394/137394 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 12011 event pairs, 233 based on Foata normal form. 10/1915 useless extension candidates. Maximal degree in co-relation 9040. Up to 1341 conditions per place. [2024-06-28 02:32:15,414 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 235 selfloop transitions, 88 changer transitions 9/334 dead transitions. [2024-06-28 02:32:15,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 334 transitions, 3848 flow [2024-06-28 02:32:15,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:32:15,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:32:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 02:32:15,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-28 02:32:15,415 INFO L175 Difference]: Start difference. First operand has 436 places, 310 transitions, 3106 flow. Second operand 12 states and 135 transitions. [2024-06-28 02:32:15,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 334 transitions, 3848 flow [2024-06-28 02:32:16,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 334 transitions, 3475 flow, removed 37 selfloop flow, removed 10 redundant places. [2024-06-28 02:32:16,055 INFO L231 Difference]: Finished difference. Result has 438 places, 306 transitions, 2870 flow [2024-06-28 02:32:16,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2733, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2870, PETRI_PLACES=438, PETRI_TRANSITIONS=306} [2024-06-28 02:32:16,057 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 407 predicate places. [2024-06-28 02:32:16,057 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 306 transitions, 2870 flow [2024-06-28 02:32:16,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:16,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:16,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:16,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2024-06-28 02:32:16,058 INFO L420 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:16,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:16,058 INFO L85 PathProgramCache]: Analyzing trace with hash -959497542, now seen corresponding path program 1 times [2024-06-28 02:32:16,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:16,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350838107] [2024-06-28 02:32:16,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:16,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:18,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:18,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350838107] [2024-06-28 02:32:18,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350838107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:18,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:18,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:32:18,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262540840] [2024-06-28 02:32:18,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:18,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:32:18,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:18,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:32:18,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:32:18,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:18,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 306 transitions, 2870 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:18,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:18,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:18,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:18,830 INFO L124 PetriNetUnfolderBase]: 956/1875 cut-off events. [2024-06-28 02:32:18,830 INFO L125 PetriNetUnfolderBase]: For 114093/114093 co-relation queries the response was YES. [2024-06-28 02:32:18,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8709 conditions, 1875 events. 956/1875 cut-off events. For 114093/114093 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 11851 event pairs, 268 based on Foata normal form. 6/1881 useless extension candidates. Maximal degree in co-relation 8522. Up to 1723 conditions per place. [2024-06-28 02:32:18,856 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 287 selfloop transitions, 22 changer transitions 22/333 dead transitions. [2024-06-28 02:32:18,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 333 transitions, 3602 flow [2024-06-28 02:32:18,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:32:18,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:32:18,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 132 transitions. [2024-06-28 02:32:18,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3173076923076923 [2024-06-28 02:32:18,857 INFO L175 Difference]: Start difference. First operand has 438 places, 306 transitions, 2870 flow. Second operand 13 states and 132 transitions. [2024-06-28 02:32:18,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 333 transitions, 3602 flow [2024-06-28 02:32:19,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 333 transitions, 3350 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 02:32:19,384 INFO L231 Difference]: Finished difference. Result has 436 places, 299 transitions, 2599 flow [2024-06-28 02:32:19,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2620, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2599, PETRI_PLACES=436, PETRI_TRANSITIONS=299} [2024-06-28 02:32:19,385 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 405 predicate places. [2024-06-28 02:32:19,385 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 299 transitions, 2599 flow [2024-06-28 02:32:19,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:19,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:19,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:19,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2024-06-28 02:32:19,385 INFO L420 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:19,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:19,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1712538594, now seen corresponding path program 2 times [2024-06-28 02:32:19,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:19,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115412393] [2024-06-28 02:32:19,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:19,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:21,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:21,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115412393] [2024-06-28 02:32:21,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115412393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:21,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:21,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:21,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30468255] [2024-06-28 02:32:21,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:21,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:21,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:21,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:21,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:21,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:21,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 299 transitions, 2599 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:21,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:21,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:21,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:21,952 INFO L124 PetriNetUnfolderBase]: 929/1826 cut-off events. [2024-06-28 02:32:21,952 INFO L125 PetriNetUnfolderBase]: For 107613/107613 co-relation queries the response was YES. [2024-06-28 02:32:21,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8152 conditions, 1826 events. 929/1826 cut-off events. For 107613/107613 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 11491 event pairs, 255 based on Foata normal form. 6/1832 useless extension candidates. Maximal degree in co-relation 7967. Up to 1673 conditions per place. [2024-06-28 02:32:21,975 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 281 selfloop transitions, 27 changer transitions 13/323 dead transitions. [2024-06-28 02:32:21,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 323 transitions, 3307 flow [2024-06-28 02:32:21,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:32:21,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:32:21,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 02:32:21,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-28 02:32:21,976 INFO L175 Difference]: Start difference. First operand has 436 places, 299 transitions, 2599 flow. Second operand 12 states and 125 transitions. [2024-06-28 02:32:21,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 323 transitions, 3307 flow [2024-06-28 02:32:22,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 323 transitions, 3237 flow, removed 10 selfloop flow, removed 14 redundant places. [2024-06-28 02:32:22,444 INFO L231 Difference]: Finished difference. Result has 423 places, 294 transitions, 2540 flow [2024-06-28 02:32:22,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2529, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2540, PETRI_PLACES=423, PETRI_TRANSITIONS=294} [2024-06-28 02:32:22,444 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 392 predicate places. [2024-06-28 02:32:22,444 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 294 transitions, 2540 flow [2024-06-28 02:32:22,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:22,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:22,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:22,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2024-06-28 02:32:22,445 INFO L420 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:22,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:22,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1124467776, now seen corresponding path program 3 times [2024-06-28 02:32:22,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:22,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245454247] [2024-06-28 02:32:22,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:22,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:24,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:24,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:24,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245454247] [2024-06-28 02:32:24,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245454247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:24,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:24,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:24,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531978683] [2024-06-28 02:32:24,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:24,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:24,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:24,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:24,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:24,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:24,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 294 transitions, 2540 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:24,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:24,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:24,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:24,918 INFO L124 PetriNetUnfolderBase]: 913/1798 cut-off events. [2024-06-28 02:32:24,919 INFO L125 PetriNetUnfolderBase]: For 107472/107472 co-relation queries the response was YES. [2024-06-28 02:32:24,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7997 conditions, 1798 events. 913/1798 cut-off events. For 107472/107472 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 11274 event pairs, 246 based on Foata normal form. 6/1804 useless extension candidates. Maximal degree in co-relation 7819. Up to 1645 conditions per place. [2024-06-28 02:32:24,939 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 276 selfloop transitions, 24 changer transitions 18/320 dead transitions. [2024-06-28 02:32:24,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 320 transitions, 3244 flow [2024-06-28 02:32:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:32:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:32:24,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 131 transitions. [2024-06-28 02:32:24,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31490384615384615 [2024-06-28 02:32:24,940 INFO L175 Difference]: Start difference. First operand has 423 places, 294 transitions, 2540 flow. Second operand 13 states and 131 transitions. [2024-06-28 02:32:24,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 320 transitions, 3244 flow [2024-06-28 02:32:25,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 320 transitions, 3184 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:32:25,534 INFO L231 Difference]: Finished difference. Result has 419 places, 288 transitions, 2470 flow [2024-06-28 02:32:25,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2480, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2470, PETRI_PLACES=419, PETRI_TRANSITIONS=288} [2024-06-28 02:32:25,534 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 388 predicate places. [2024-06-28 02:32:25,534 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 288 transitions, 2470 flow [2024-06-28 02:32:25,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:25,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:25,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:25,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2024-06-28 02:32:25,535 INFO L420 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:25,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:25,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1596058132, now seen corresponding path program 4 times [2024-06-28 02:32:25,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:25,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218482401] [2024-06-28 02:32:25,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:25,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:27,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:27,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218482401] [2024-06-28 02:32:27,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218482401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:27,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:27,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:27,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704483496] [2024-06-28 02:32:27,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:27,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:27,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:27,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:27,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:27,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:27,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 288 transitions, 2470 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:27,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:27,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:27,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:27,926 INFO L124 PetriNetUnfolderBase]: 892/1759 cut-off events. [2024-06-28 02:32:27,926 INFO L125 PetriNetUnfolderBase]: For 107403/107403 co-relation queries the response was YES. [2024-06-28 02:32:27,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7813 conditions, 1759 events. 892/1759 cut-off events. For 107403/107403 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 10971 event pairs, 233 based on Foata normal form. 6/1765 useless extension candidates. Maximal degree in co-relation 7637. Up to 1609 conditions per place. [2024-06-28 02:32:27,950 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 267 selfloop transitions, 19 changer transitions 24/312 dead transitions. [2024-06-28 02:32:27,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 312 transitions, 3152 flow [2024-06-28 02:32:27,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:32:27,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:32:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 02:32:27,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-28 02:32:27,951 INFO L175 Difference]: Start difference. First operand has 419 places, 288 transitions, 2470 flow. Second operand 12 states and 123 transitions. [2024-06-28 02:32:27,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 312 transitions, 3152 flow [2024-06-28 02:32:28,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 312 transitions, 3092 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:32:28,644 INFO L231 Difference]: Finished difference. Result has 411 places, 278 transitions, 2353 flow [2024-06-28 02:32:28,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2353, PETRI_PLACES=411, PETRI_TRANSITIONS=278} [2024-06-28 02:32:28,644 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 380 predicate places. [2024-06-28 02:32:28,645 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 278 transitions, 2353 flow [2024-06-28 02:32:28,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:28,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:28,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:28,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2024-06-28 02:32:28,645 INFO L420 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:28,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:28,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2107800488, now seen corresponding path program 5 times [2024-06-28 02:32:28,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:28,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631636836] [2024-06-28 02:32:28,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:28,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:30,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:30,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:30,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631636836] [2024-06-28 02:32:30,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631636836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:30,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:30,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:32:30,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340752284] [2024-06-28 02:32:30,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:30,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:32:30,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:30,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:32:30,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:32:30,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:30,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 278 transitions, 2353 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:30,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:30,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:30,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:31,436 INFO L124 PetriNetUnfolderBase]: 865/1698 cut-off events. [2024-06-28 02:32:31,436 INFO L125 PetriNetUnfolderBase]: For 107146/107146 co-relation queries the response was YES. [2024-06-28 02:32:31,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7541 conditions, 1698 events. 865/1698 cut-off events. For 107146/107146 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 10442 event pairs, 181 based on Foata normal form. 6/1704 useless extension candidates. Maximal degree in co-relation 7368. Up to 1538 conditions per place. [2024-06-28 02:32:31,458 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 259 selfloop transitions, 19 changer transitions 25/305 dead transitions. [2024-06-28 02:32:31,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 305 transitions, 3025 flow [2024-06-28 02:32:31,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:32:31,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:32:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 128 transitions. [2024-06-28 02:32:31,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3076923076923077 [2024-06-28 02:32:31,459 INFO L175 Difference]: Start difference. First operand has 411 places, 278 transitions, 2353 flow. Second operand 13 states and 128 transitions. [2024-06-28 02:32:31,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 305 transitions, 3025 flow [2024-06-28 02:32:32,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 305 transitions, 2969 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 02:32:32,125 INFO L231 Difference]: Finished difference. Result has 401 places, 270 transitions, 2278 flow [2024-06-28 02:32:32,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2299, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2278, PETRI_PLACES=401, PETRI_TRANSITIONS=270} [2024-06-28 02:32:32,125 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 370 predicate places. [2024-06-28 02:32:32,125 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 270 transitions, 2278 flow [2024-06-28 02:32:32,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:32,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:32,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:32,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2024-06-28 02:32:32,126 INFO L420 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:32,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:32,126 INFO L85 PathProgramCache]: Analyzing trace with hash 617997658, now seen corresponding path program 6 times [2024-06-28 02:32:32,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:32,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391308884] [2024-06-28 02:32:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:32,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:33,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:33,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:33,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391308884] [2024-06-28 02:32:33,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391308884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:33,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:33,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:33,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687902426] [2024-06-28 02:32:33,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:33,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:33,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:33,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:33,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:33,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:33,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 270 transitions, 2278 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:33,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:33,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:33,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:34,320 INFO L124 PetriNetUnfolderBase]: 838/1639 cut-off events. [2024-06-28 02:32:34,320 INFO L125 PetriNetUnfolderBase]: For 106971/106971 co-relation queries the response was YES. [2024-06-28 02:32:34,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7218 conditions, 1639 events. 838/1639 cut-off events. For 106971/106971 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 10007 event pairs, 206 based on Foata normal form. 6/1645 useless extension candidates. Maximal degree in co-relation 7050. Up to 1516 conditions per place. [2024-06-28 02:32:34,334 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 259 selfloop transitions, 23 changer transitions 11/295 dead transitions. [2024-06-28 02:32:34,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 295 transitions, 2924 flow [2024-06-28 02:32:34,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:32:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:32:34,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 132 transitions. [2024-06-28 02:32:34,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3173076923076923 [2024-06-28 02:32:34,335 INFO L175 Difference]: Start difference. First operand has 401 places, 270 transitions, 2278 flow. Second operand 13 states and 132 transitions. [2024-06-28 02:32:34,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 295 transitions, 2924 flow [2024-06-28 02:32:34,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 295 transitions, 2855 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 02:32:34,823 INFO L231 Difference]: Finished difference. Result has 389 places, 267 transitions, 2232 flow [2024-06-28 02:32:34,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2232, PETRI_PLACES=389, PETRI_TRANSITIONS=267} [2024-06-28 02:32:34,824 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-28 02:32:34,824 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 267 transitions, 2232 flow [2024-06-28 02:32:34,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:34,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:34,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:34,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2024-06-28 02:32:34,824 INFO L420 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:34,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:34,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1443035124, now seen corresponding path program 7 times [2024-06-28 02:32:34,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:34,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789411066] [2024-06-28 02:32:34,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:34,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:36,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:36,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789411066] [2024-06-28 02:32:36,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789411066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:36,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:36,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:36,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832049219] [2024-06-28 02:32:36,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:36,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:36,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:36,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:36,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:36,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:36,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 267 transitions, 2232 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:36,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:36,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:36,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:37,223 INFO L124 PetriNetUnfolderBase]: 828/1621 cut-off events. [2024-06-28 02:32:37,223 INFO L125 PetriNetUnfolderBase]: For 106746/106746 co-relation queries the response was YES. [2024-06-28 02:32:37,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7128 conditions, 1621 events. 828/1621 cut-off events. For 106746/106746 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9879 event pairs, 204 based on Foata normal form. 6/1627 useless extension candidates. Maximal degree in co-relation 6964. Up to 1498 conditions per place. [2024-06-28 02:32:37,242 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 255 selfloop transitions, 21 changer transitions 14/292 dead transitions. [2024-06-28 02:32:37,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 292 transitions, 2872 flow [2024-06-28 02:32:37,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:32:37,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:32:37,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 131 transitions. [2024-06-28 02:32:37,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31490384615384615 [2024-06-28 02:32:37,243 INFO L175 Difference]: Start difference. First operand has 389 places, 267 transitions, 2232 flow. Second operand 13 states and 131 transitions. [2024-06-28 02:32:37,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 292 transitions, 2872 flow [2024-06-28 02:32:37,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 292 transitions, 2820 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:32:37,708 INFO L231 Difference]: Finished difference. Result has 386 places, 263 transitions, 2192 flow [2024-06-28 02:32:37,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2192, PETRI_PLACES=386, PETRI_TRANSITIONS=263} [2024-06-28 02:32:37,708 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 355 predicate places. [2024-06-28 02:32:37,709 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 263 transitions, 2192 flow [2024-06-28 02:32:37,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:37,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:37,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:37,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2024-06-28 02:32:37,709 INFO L420 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:37,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:37,709 INFO L85 PathProgramCache]: Analyzing trace with hash 613356028, now seen corresponding path program 8 times [2024-06-28 02:32:37,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:37,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195750434] [2024-06-28 02:32:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:37,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:39,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:39,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195750434] [2024-06-28 02:32:39,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195750434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:39,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:39,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:39,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494428911] [2024-06-28 02:32:39,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:39,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:39,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:39,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:39,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:39,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:39,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 263 transitions, 2192 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:39,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:39,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:39,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:40,022 INFO L124 PetriNetUnfolderBase]: 814/1595 cut-off events. [2024-06-28 02:32:40,023 INFO L125 PetriNetUnfolderBase]: For 106720/106720 co-relation queries the response was YES. [2024-06-28 02:32:40,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7017 conditions, 1595 events. 814/1595 cut-off events. For 106720/106720 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 9654 event pairs, 200 based on Foata normal form. 6/1601 useless extension candidates. Maximal degree in co-relation 6854. Up to 1472 conditions per place. [2024-06-28 02:32:40,042 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 19 changer transitions 17/288 dead transitions. [2024-06-28 02:32:40,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 288 transitions, 2824 flow [2024-06-28 02:32:40,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:32:40,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:32:40,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 130 transitions. [2024-06-28 02:32:40,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-28 02:32:40,043 INFO L175 Difference]: Start difference. First operand has 386 places, 263 transitions, 2192 flow. Second operand 13 states and 130 transitions. [2024-06-28 02:32:40,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 288 transitions, 2824 flow [2024-06-28 02:32:40,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 288 transitions, 2772 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 02:32:40,572 INFO L231 Difference]: Finished difference. Result has 381 places, 258 transitions, 2138 flow [2024-06-28 02:32:40,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2140, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2138, PETRI_PLACES=381, PETRI_TRANSITIONS=258} [2024-06-28 02:32:40,572 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-28 02:32:40,572 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 258 transitions, 2138 flow [2024-06-28 02:32:40,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:40,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:40,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:40,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2024-06-28 02:32:40,573 INFO L420 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:40,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:40,573 INFO L85 PathProgramCache]: Analyzing trace with hash 502533508, now seen corresponding path program 9 times [2024-06-28 02:32:40,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:40,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603827444] [2024-06-28 02:32:40,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:40,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:42,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:42,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603827444] [2024-06-28 02:32:42,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603827444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:42,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:42,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:42,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104613944] [2024-06-28 02:32:42,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:42,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:42,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:42,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:42,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:42,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:42,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 258 transitions, 2138 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:42,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:42,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:42,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:42,904 INFO L124 PetriNetUnfolderBase]: 796/1561 cut-off events. [2024-06-28 02:32:42,905 INFO L125 PetriNetUnfolderBase]: For 106678/106678 co-relation queries the response was YES. [2024-06-28 02:32:42,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6869 conditions, 1561 events. 796/1561 cut-off events. For 106678/106678 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 9392 event pairs, 194 based on Foata normal form. 6/1567 useless extension candidates. Maximal degree in co-relation 6708. Up to 1438 conditions per place. [2024-06-28 02:32:42,923 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 244 selfloop transitions, 17 changer transitions 20/283 dead transitions. [2024-06-28 02:32:42,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 283 transitions, 2760 flow [2024-06-28 02:32:42,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:32:42,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:32:42,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 129 transitions. [2024-06-28 02:32:42,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31009615384615385 [2024-06-28 02:32:42,924 INFO L175 Difference]: Start difference. First operand has 381 places, 258 transitions, 2138 flow. Second operand 13 states and 129 transitions. [2024-06-28 02:32:42,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 283 transitions, 2760 flow [2024-06-28 02:32:43,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 283 transitions, 2710 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:32:43,376 INFO L231 Difference]: Finished difference. Result has 374 places, 252 transitions, 2072 flow [2024-06-28 02:32:43,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2088, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2072, PETRI_PLACES=374, PETRI_TRANSITIONS=252} [2024-06-28 02:32:43,376 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2024-06-28 02:32:43,376 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 252 transitions, 2072 flow [2024-06-28 02:32:43,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:43,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:43,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:43,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2024-06-28 02:32:43,377 INFO L420 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:43,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:43,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1320812542, now seen corresponding path program 10 times [2024-06-28 02:32:43,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:43,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463337035] [2024-06-28 02:32:43,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:43,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:45,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:45,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:45,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463337035] [2024-06-28 02:32:45,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463337035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:45,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:45,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:32:45,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171982703] [2024-06-28 02:32:45,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:45,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:32:45,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:45,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:32:45,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:32:45,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:45,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 252 transitions, 2072 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:45,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:45,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:45,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:45,743 INFO L124 PetriNetUnfolderBase]: 774/1519 cut-off events. [2024-06-28 02:32:45,743 INFO L125 PetriNetUnfolderBase]: For 106584/106584 co-relation queries the response was YES. [2024-06-28 02:32:45,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6688 conditions, 1519 events. 774/1519 cut-off events. For 106584/106584 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 9104 event pairs, 186 based on Foata normal form. 6/1525 useless extension candidates. Maximal degree in co-relation 6530. Up to 1392 conditions per place. [2024-06-28 02:32:45,759 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 236 selfloop transitions, 14 changer transitions 24/276 dead transitions. [2024-06-28 02:32:45,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 276 transitions, 2680 flow [2024-06-28 02:32:45,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:32:45,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:32:45,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-28 02:32:45,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3177083333333333 [2024-06-28 02:32:45,760 INFO L175 Difference]: Start difference. First operand has 374 places, 252 transitions, 2072 flow. Second operand 12 states and 122 transitions. [2024-06-28 02:32:45,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 276 transitions, 2680 flow [2024-06-28 02:32:46,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 276 transitions, 2632 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 02:32:46,242 INFO L231 Difference]: Finished difference. Result has 363 places, 244 transitions, 1981 flow [2024-06-28 02:32:46,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1981, PETRI_PLACES=363, PETRI_TRANSITIONS=244} [2024-06-28 02:32:46,242 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-28 02:32:46,243 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 244 transitions, 1981 flow [2024-06-28 02:32:46,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:46,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:46,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:46,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2024-06-28 02:32:46,243 INFO L420 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:46,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:46,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1530148158, now seen corresponding path program 11 times [2024-06-28 02:32:46,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:46,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279883992] [2024-06-28 02:32:46,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:46,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:48,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:48,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279883992] [2024-06-28 02:32:48,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279883992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:48,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:48,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:48,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234861007] [2024-06-28 02:32:48,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:48,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:48,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:48,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:48,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:48,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:48,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 244 transitions, 1981 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:48,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:48,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:48,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:48,729 INFO L124 PetriNetUnfolderBase]: 743/1460 cut-off events. [2024-06-28 02:32:48,729 INFO L125 PetriNetUnfolderBase]: For 106413/106413 co-relation queries the response was YES. [2024-06-28 02:32:48,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6422 conditions, 1460 events. 743/1460 cut-off events. For 106413/106413 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 8681 event pairs, 172 based on Foata normal form. 6/1466 useless extension candidates. Maximal degree in co-relation 6269. Up to 1259 conditions per place. [2024-06-28 02:32:48,744 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 215 selfloop transitions, 36 changer transitions 15/268 dead transitions. [2024-06-28 02:32:48,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 268 transitions, 2573 flow [2024-06-28 02:32:48,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:32:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:32:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 133 transitions. [2024-06-28 02:32:48,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31971153846153844 [2024-06-28 02:32:48,745 INFO L175 Difference]: Start difference. First operand has 363 places, 244 transitions, 1981 flow. Second operand 13 states and 133 transitions. [2024-06-28 02:32:48,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 268 transitions, 2573 flow [2024-06-28 02:32:49,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 268 transitions, 2517 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 02:32:49,286 INFO L231 Difference]: Finished difference. Result has 351 places, 239 transitions, 1956 flow [2024-06-28 02:32:49,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1956, PETRI_PLACES=351, PETRI_TRANSITIONS=239} [2024-06-28 02:32:49,287 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-28 02:32:49,287 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 239 transitions, 1956 flow [2024-06-28 02:32:49,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:49,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:49,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:49,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2024-06-28 02:32:49,287 INFO L420 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:49,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:49,288 INFO L85 PathProgramCache]: Analyzing trace with hash -743902724, now seen corresponding path program 12 times [2024-06-28 02:32:49,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:49,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542138426] [2024-06-28 02:32:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:49,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:50,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:50,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542138426] [2024-06-28 02:32:50,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542138426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:50,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:50,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:50,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313243069] [2024-06-28 02:32:50,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:50,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:50,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:50,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:50,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:51,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:51,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 239 transitions, 1956 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:51,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:51,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:51,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:51,589 INFO L124 PetriNetUnfolderBase]: 725/1430 cut-off events. [2024-06-28 02:32:51,589 INFO L125 PetriNetUnfolderBase]: For 106500/106500 co-relation queries the response was YES. [2024-06-28 02:32:51,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6297 conditions, 1430 events. 725/1430 cut-off events. For 106500/106500 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8495 event pairs, 168 based on Foata normal form. 6/1436 useless extension candidates. Maximal degree in co-relation 6150. Up to 1231 conditions per place. [2024-06-28 02:32:51,603 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 210 selfloop transitions, 32 changer transitions 17/261 dead transitions. [2024-06-28 02:32:51,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 261 transitions, 2530 flow [2024-06-28 02:32:51,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:32:51,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:32:51,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 02:32:51,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-28 02:32:51,604 INFO L175 Difference]: Start difference. First operand has 351 places, 239 transitions, 1956 flow. Second operand 12 states and 125 transitions. [2024-06-28 02:32:51,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 261 transitions, 2530 flow [2024-06-28 02:32:51,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 261 transitions, 2448 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 02:32:51,961 INFO L231 Difference]: Finished difference. Result has 346 places, 232 transitions, 1869 flow [2024-06-28 02:32:51,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1874, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1869, PETRI_PLACES=346, PETRI_TRANSITIONS=232} [2024-06-28 02:32:51,961 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-28 02:32:51,961 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 232 transitions, 1869 flow [2024-06-28 02:32:51,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:51,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:51,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:51,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2024-06-28 02:32:51,962 INFO L420 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:51,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:51,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1414856988, now seen corresponding path program 13 times [2024-06-28 02:32:51,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:51,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359487698] [2024-06-28 02:32:51,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:51,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:53,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:53,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:53,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359487698] [2024-06-28 02:32:53,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359487698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:53,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:53,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:53,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949767453] [2024-06-28 02:32:53,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:53,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:53,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:53,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:53,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:53,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:53,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 232 transitions, 1869 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:53,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:53,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:53,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:54,216 INFO L124 PetriNetUnfolderBase]: 701/1386 cut-off events. [2024-06-28 02:32:54,216 INFO L125 PetriNetUnfolderBase]: For 106380/106380 co-relation queries the response was YES. [2024-06-28 02:32:54,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6084 conditions, 1386 events. 701/1386 cut-off events. For 106380/106380 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8187 event pairs, 156 based on Foata normal form. 6/1392 useless extension candidates. Maximal degree in co-relation 5938. Up to 1167 conditions per place. [2024-06-28 02:32:54,231 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 205 selfloop transitions, 30 changer transitions 17/254 dead transitions. [2024-06-28 02:32:54,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 254 transitions, 2429 flow [2024-06-28 02:32:54,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:32:54,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:32:54,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-28 02:32:54,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-28 02:32:54,232 INFO L175 Difference]: Start difference. First operand has 346 places, 232 transitions, 1869 flow. Second operand 12 states and 126 transitions. [2024-06-28 02:32:54,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 254 transitions, 2429 flow [2024-06-28 02:32:54,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 254 transitions, 2341 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 02:32:54,633 INFO L231 Difference]: Finished difference. Result has 339 places, 223 transitions, 1745 flow [2024-06-28 02:32:54,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1745, PETRI_PLACES=339, PETRI_TRANSITIONS=223} [2024-06-28 02:32:54,634 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-28 02:32:54,634 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 223 transitions, 1745 flow [2024-06-28 02:32:54,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:54,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:54,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:54,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2024-06-28 02:32:54,634 INFO L420 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:54,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:54,635 INFO L85 PathProgramCache]: Analyzing trace with hash 765568654, now seen corresponding path program 14 times [2024-06-28 02:32:54,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:54,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384480929] [2024-06-28 02:32:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:54,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:56,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:56,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384480929] [2024-06-28 02:32:56,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384480929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:56,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:56,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:56,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553578204] [2024-06-28 02:32:56,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:56,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:56,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:56,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:56,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:57,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:57,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 223 transitions, 1745 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:57,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:57,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:57,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:57,641 INFO L124 PetriNetUnfolderBase]: 675/1336 cut-off events. [2024-06-28 02:32:57,641 INFO L125 PetriNetUnfolderBase]: For 106176/106176 co-relation queries the response was YES. [2024-06-28 02:32:57,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5837 conditions, 1336 events. 675/1336 cut-off events. For 106176/106176 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7824 event pairs, 156 based on Foata normal form. 6/1342 useless extension candidates. Maximal degree in co-relation 5694. Up to 1177 conditions per place. [2024-06-28 02:32:57,655 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 30 changer transitions 11/249 dead transitions. [2024-06-28 02:32:57,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 249 transitions, 2311 flow [2024-06-28 02:32:57,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:32:57,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:32:57,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 133 transitions. [2024-06-28 02:32:57,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31971153846153844 [2024-06-28 02:32:57,656 INFO L175 Difference]: Start difference. First operand has 339 places, 223 transitions, 1745 flow. Second operand 13 states and 133 transitions. [2024-06-28 02:32:57,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 249 transitions, 2311 flow [2024-06-28 02:32:58,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 249 transitions, 2233 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-28 02:32:58,051 INFO L231 Difference]: Finished difference. Result has 331 places, 220 transitions, 1704 flow [2024-06-28 02:32:58,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1704, PETRI_PLACES=331, PETRI_TRANSITIONS=220} [2024-06-28 02:32:58,051 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-28 02:32:58,051 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 220 transitions, 1704 flow [2024-06-28 02:32:58,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:58,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:58,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:58,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2024-06-28 02:32:58,052 INFO L420 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:32:58,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:58,052 INFO L85 PathProgramCache]: Analyzing trace with hash -2086661064, now seen corresponding path program 15 times [2024-06-28 02:32:58,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:58,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329643956] [2024-06-28 02:32:58,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:58,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:59,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:59,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329643956] [2024-06-28 02:32:59,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329643956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:59,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:59,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:32:59,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636161826] [2024-06-28 02:32:59,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:59,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:32:59,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:59,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:32:59,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:32:59,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:32:59,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 220 transitions, 1704 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:59,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:59,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:32:59,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:00,596 INFO L124 PetriNetUnfolderBase]: 665/1318 cut-off events. [2024-06-28 02:33:00,597 INFO L125 PetriNetUnfolderBase]: For 106018/106018 co-relation queries the response was YES. [2024-06-28 02:33:00,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5737 conditions, 1318 events. 665/1318 cut-off events. For 106018/106018 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7674 event pairs, 156 based on Foata normal form. 6/1324 useless extension candidates. Maximal degree in co-relation 5598. Up to 1140 conditions per place. [2024-06-28 02:33:00,610 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 203 selfloop transitions, 27 changer transitions 15/247 dead transitions. [2024-06-28 02:33:00,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 247 transitions, 2272 flow [2024-06-28 02:33:00,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:33:00,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:33:00,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 134 transitions. [2024-06-28 02:33:00,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32211538461538464 [2024-06-28 02:33:00,611 INFO L175 Difference]: Start difference. First operand has 331 places, 220 transitions, 1704 flow. Second operand 13 states and 134 transitions. [2024-06-28 02:33:00,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 247 transitions, 2272 flow [2024-06-28 02:33:01,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 247 transitions, 2206 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:33:01,095 INFO L231 Difference]: Finished difference. Result has 328 places, 214 transitions, 1618 flow [2024-06-28 02:33:01,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1618, PETRI_PLACES=328, PETRI_TRANSITIONS=214} [2024-06-28 02:33:01,096 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-28 02:33:01,096 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 214 transitions, 1618 flow [2024-06-28 02:33:01,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:01,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:01,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:01,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2024-06-28 02:33:01,096 INFO L420 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:01,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:01,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1980232102, now seen corresponding path program 16 times [2024-06-28 02:33:01,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:01,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872096367] [2024-06-28 02:33:01,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:01,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:03,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:03,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:03,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872096367] [2024-06-28 02:33:03,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872096367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:03,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:03,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:03,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222277895] [2024-06-28 02:33:03,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:03,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:03,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:03,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:03,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:03,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:03,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 214 transitions, 1618 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:03,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:03,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:03,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:04,003 INFO L124 PetriNetUnfolderBase]: 650/1289 cut-off events. [2024-06-28 02:33:04,003 INFO L125 PetriNetUnfolderBase]: For 105936/105936 co-relation queries the response was YES. [2024-06-28 02:33:04,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5568 conditions, 1289 events. 650/1289 cut-off events. For 105936/105936 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7483 event pairs, 154 based on Foata normal form. 6/1295 useless extension candidates. Maximal degree in co-relation 5430. Up to 1130 conditions per place. [2024-06-28 02:33:04,016 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 197 selfloop transitions, 22 changer transitions 19/240 dead transitions. [2024-06-28 02:33:04,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 240 transitions, 2166 flow [2024-06-28 02:33:04,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:33:04,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:33:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 132 transitions. [2024-06-28 02:33:04,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3173076923076923 [2024-06-28 02:33:04,017 INFO L175 Difference]: Start difference. First operand has 328 places, 214 transitions, 1618 flow. Second operand 13 states and 132 transitions. [2024-06-28 02:33:04,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 240 transitions, 2166 flow [2024-06-28 02:33:04,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 240 transitions, 2102 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 02:33:04,443 INFO L231 Difference]: Finished difference. Result has 320 places, 206 transitions, 1514 flow [2024-06-28 02:33:04,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1514, PETRI_PLACES=320, PETRI_TRANSITIONS=206} [2024-06-28 02:33:04,443 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-28 02:33:04,444 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 206 transitions, 1514 flow [2024-06-28 02:33:04,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:04,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:04,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:04,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2024-06-28 02:33:04,444 INFO L420 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:04,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:04,444 INFO L85 PathProgramCache]: Analyzing trace with hash 269506778, now seen corresponding path program 17 times [2024-06-28 02:33:04,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:04,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171463560] [2024-06-28 02:33:04,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:04,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:07,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:07,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171463560] [2024-06-28 02:33:07,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171463560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:07,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:07,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:07,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983201567] [2024-06-28 02:33:07,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:07,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:07,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:07,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:07,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:07,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:07,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 206 transitions, 1514 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:07,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:07,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:07,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:07,743 INFO L124 PetriNetUnfolderBase]: 629/1250 cut-off events. [2024-06-28 02:33:07,743 INFO L125 PetriNetUnfolderBase]: For 105802/105802 co-relation queries the response was YES. [2024-06-28 02:33:07,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5356 conditions, 1250 events. 629/1250 cut-off events. For 105802/105802 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7210 event pairs, 154 based on Foata normal form. 6/1256 useless extension candidates. Maximal degree in co-relation 5222. Up to 1112 conditions per place. [2024-06-28 02:33:07,756 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 24 changer transitions 11/230 dead transitions. [2024-06-28 02:33:07,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 230 transitions, 2034 flow [2024-06-28 02:33:07,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:33:07,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:33:07,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 128 transitions. [2024-06-28 02:33:07,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3076923076923077 [2024-06-28 02:33:07,757 INFO L175 Difference]: Start difference. First operand has 320 places, 206 transitions, 1514 flow. Second operand 13 states and 128 transitions. [2024-06-28 02:33:07,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 230 transitions, 2034 flow [2024-06-28 02:33:08,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 230 transitions, 1972 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-28 02:33:08,088 INFO L231 Difference]: Finished difference. Result has 312 places, 203 transitions, 1477 flow [2024-06-28 02:33:08,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1477, PETRI_PLACES=312, PETRI_TRANSITIONS=203} [2024-06-28 02:33:08,089 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-28 02:33:08,089 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 203 transitions, 1477 flow [2024-06-28 02:33:08,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:08,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:08,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:08,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2024-06-28 02:33:08,089 INFO L420 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:08,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:08,090 INFO L85 PathProgramCache]: Analyzing trace with hash 96843908, now seen corresponding path program 18 times [2024-06-28 02:33:08,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:08,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482349727] [2024-06-28 02:33:08,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:08,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:09,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:09,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:09,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482349727] [2024-06-28 02:33:09,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482349727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:09,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:09,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:09,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916113440] [2024-06-28 02:33:09,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:09,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:09,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:09,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:09,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:09,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:09,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 203 transitions, 1477 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:09,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:09,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:09,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:10,373 INFO L124 PetriNetUnfolderBase]: 619/1232 cut-off events. [2024-06-28 02:33:10,374 INFO L125 PetriNetUnfolderBase]: For 105746/105746 co-relation queries the response was YES. [2024-06-28 02:33:10,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5261 conditions, 1232 events. 619/1232 cut-off events. For 105746/105746 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7085 event pairs, 152 based on Foata normal form. 6/1238 useless extension candidates. Maximal degree in co-relation 5130. Up to 1094 conditions per place. [2024-06-28 02:33:10,385 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 189 selfloop transitions, 21 changer transitions 15/227 dead transitions. [2024-06-28 02:33:10,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 227 transitions, 1991 flow [2024-06-28 02:33:10,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:33:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:33:10,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 127 transitions. [2024-06-28 02:33:10,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30528846153846156 [2024-06-28 02:33:10,386 INFO L175 Difference]: Start difference. First operand has 312 places, 203 transitions, 1477 flow. Second operand 13 states and 127 transitions. [2024-06-28 02:33:10,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 227 transitions, 1991 flow [2024-06-28 02:33:10,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 227 transitions, 1937 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 02:33:10,807 INFO L231 Difference]: Finished difference. Result has 308 places, 198 transitions, 1424 flow [2024-06-28 02:33:10,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1424, PETRI_PLACES=308, PETRI_TRANSITIONS=198} [2024-06-28 02:33:10,807 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-28 02:33:10,807 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 198 transitions, 1424 flow [2024-06-28 02:33:10,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:10,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:10,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:10,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2024-06-28 02:33:10,808 INFO L420 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:10,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:10,809 INFO L85 PathProgramCache]: Analyzing trace with hash 902923894, now seen corresponding path program 19 times [2024-06-28 02:33:10,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:10,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950058330] [2024-06-28 02:33:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:10,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:12,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:12,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:12,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950058330] [2024-06-28 02:33:12,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950058330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:12,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:12,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:12,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049949007] [2024-06-28 02:33:12,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:12,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:12,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:12,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:12,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:13,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:13,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 198 transitions, 1424 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:13,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:13,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:13,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:13,558 INFO L124 PetriNetUnfolderBase]: 601/1202 cut-off events. [2024-06-28 02:33:13,558 INFO L125 PetriNetUnfolderBase]: For 105682/105682 co-relation queries the response was YES. [2024-06-28 02:33:13,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5111 conditions, 1202 events. 601/1202 cut-off events. For 105682/105682 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6886 event pairs, 148 based on Foata normal form. 6/1208 useless extension candidates. Maximal degree in co-relation 4982. Up to 1066 conditions per place. [2024-06-28 02:33:13,570 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 176 selfloop transitions, 8 changer transitions 36/222 dead transitions. [2024-06-28 02:33:13,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 222 transitions, 1928 flow [2024-06-28 02:33:13,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:33:13,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:33:13,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 126 transitions. [2024-06-28 02:33:13,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30288461538461536 [2024-06-28 02:33:13,571 INFO L175 Difference]: Start difference. First operand has 308 places, 198 transitions, 1424 flow. Second operand 13 states and 126 transitions. [2024-06-28 02:33:13,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 222 transitions, 1928 flow [2024-06-28 02:33:14,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 222 transitions, 1868 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 02:33:14,003 INFO L231 Difference]: Finished difference. Result has 303 places, 181 transitions, 1218 flow [2024-06-28 02:33:14,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1218, PETRI_PLACES=303, PETRI_TRANSITIONS=181} [2024-06-28 02:33:14,004 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-28 02:33:14,004 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 181 transitions, 1218 flow [2024-06-28 02:33:14,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:14,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:14,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:14,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2024-06-28 02:33:14,004 INFO L420 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:14,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:14,005 INFO L85 PathProgramCache]: Analyzing trace with hash 832325128, now seen corresponding path program 20 times [2024-06-28 02:33:14,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:14,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222947507] [2024-06-28 02:33:14,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:14,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:15,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:15,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:15,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222947507] [2024-06-28 02:33:15,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222947507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:15,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:15,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:15,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002207144] [2024-06-28 02:33:15,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:15,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:15,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:15,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:15,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:15,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:15,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 181 transitions, 1218 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:15,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:15,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:15,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:16,289 INFO L124 PetriNetUnfolderBase]: 565/1114 cut-off events. [2024-06-28 02:33:16,290 INFO L125 PetriNetUnfolderBase]: For 105315/105315 co-relation queries the response was YES. [2024-06-28 02:33:16,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4703 conditions, 1114 events. 565/1114 cut-off events. For 105315/105315 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6251 event pairs, 146 based on Foata normal form. 6/1120 useless extension candidates. Maximal degree in co-relation 4576. Up to 1024 conditions per place. [2024-06-28 02:33:16,300 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 175 selfloop transitions, 14 changer transitions 11/202 dead transitions. [2024-06-28 02:33:16,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 202 transitions, 1668 flow [2024-06-28 02:33:16,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:33:16,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:33:16,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-28 02:33:16,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-28 02:33:16,300 INFO L175 Difference]: Start difference. First operand has 303 places, 181 transitions, 1218 flow. Second operand 12 states and 118 transitions. [2024-06-28 02:33:16,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 202 transitions, 1668 flow [2024-06-28 02:33:16,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 202 transitions, 1586 flow, removed 11 selfloop flow, removed 17 redundant places. [2024-06-28 02:33:16,692 INFO L231 Difference]: Finished difference. Result has 280 places, 178 transitions, 1152 flow [2024-06-28 02:33:16,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1152, PETRI_PLACES=280, PETRI_TRANSITIONS=178} [2024-06-28 02:33:16,693 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-28 02:33:16,693 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 178 transitions, 1152 flow [2024-06-28 02:33:16,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:16,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:16,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:16,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2024-06-28 02:33:16,693 INFO L420 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:16,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:16,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1228707654, now seen corresponding path program 21 times [2024-06-28 02:33:16,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:16,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011951071] [2024-06-28 02:33:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:16,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:18,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:18,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:18,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011951071] [2024-06-28 02:33:18,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011951071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:18,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:18,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:33:18,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479900042] [2024-06-28 02:33:18,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:18,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:33:18,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:18,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:33:18,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:33:18,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:18,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 178 transitions, 1152 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:18,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:18,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:18,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:18,581 INFO L124 PetriNetUnfolderBase]: 555/1096 cut-off events. [2024-06-28 02:33:18,581 INFO L125 PetriNetUnfolderBase]: For 101281/101281 co-relation queries the response was YES. [2024-06-28 02:33:18,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4529 conditions, 1096 events. 555/1096 cut-off events. For 101281/101281 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6129 event pairs, 144 based on Foata normal form. 6/1102 useless extension candidates. Maximal degree in co-relation 4410. Up to 1006 conditions per place. [2024-06-28 02:33:18,591 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 171 selfloop transitions, 12 changer transitions 14/199 dead transitions. [2024-06-28 02:33:18,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 199 transitions, 1596 flow [2024-06-28 02:33:18,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:33:18,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:33:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-28 02:33:18,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3046875 [2024-06-28 02:33:18,592 INFO L175 Difference]: Start difference. First operand has 280 places, 178 transitions, 1152 flow. Second operand 12 states and 117 transitions. [2024-06-28 02:33:18,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 199 transitions, 1596 flow [2024-06-28 02:33:18,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 199 transitions, 1564 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:33:18,876 INFO L231 Difference]: Finished difference. Result has 277 places, 174 transitions, 1129 flow [2024-06-28 02:33:18,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1129, PETRI_PLACES=277, PETRI_TRANSITIONS=174} [2024-06-28 02:33:18,876 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-28 02:33:18,876 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 174 transitions, 1129 flow [2024-06-28 02:33:18,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:18,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:18,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:18,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2024-06-28 02:33:18,877 INFO L420 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:18,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:18,877 INFO L85 PathProgramCache]: Analyzing trace with hash -652962466, now seen corresponding path program 22 times [2024-06-28 02:33:18,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:18,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366373606] [2024-06-28 02:33:18,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:18,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:20,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:20,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366373606] [2024-06-28 02:33:20,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366373606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:20,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:20,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:20,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464550702] [2024-06-28 02:33:20,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:20,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:20,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:20,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:20,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:20,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:20,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 174 transitions, 1129 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:20,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:20,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:20,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:21,406 INFO L124 PetriNetUnfolderBase]: 541/1070 cut-off events. [2024-06-28 02:33:21,406 INFO L125 PetriNetUnfolderBase]: For 99381/99381 co-relation queries the response was YES. [2024-06-28 02:33:21,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4442 conditions, 1070 events. 541/1070 cut-off events. For 99381/99381 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5937 event pairs, 140 based on Foata normal form. 6/1076 useless extension candidates. Maximal degree in co-relation 4324. Up to 980 conditions per place. [2024-06-28 02:33:21,415 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 166 selfloop transitions, 10 changer transitions 17/195 dead transitions. [2024-06-28 02:33:21,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 195 transitions, 1565 flow [2024-06-28 02:33:21,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:33:21,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:33:21,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-28 02:33:21,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2024-06-28 02:33:21,417 INFO L175 Difference]: Start difference. First operand has 277 places, 174 transitions, 1129 flow. Second operand 12 states and 116 transitions. [2024-06-28 02:33:21,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 195 transitions, 1565 flow [2024-06-28 02:33:21,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 195 transitions, 1533 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:33:21,641 INFO L231 Difference]: Finished difference. Result has 271 places, 169 transitions, 1098 flow [2024-06-28 02:33:21,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1098, PETRI_PLACES=271, PETRI_TRANSITIONS=169} [2024-06-28 02:33:21,641 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-28 02:33:21,641 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 169 transitions, 1098 flow [2024-06-28 02:33:21,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:21,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:21,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:21,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2024-06-28 02:33:21,642 INFO L420 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:21,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:21,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1470322508, now seen corresponding path program 23 times [2024-06-28 02:33:21,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:21,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475689364] [2024-06-28 02:33:21,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:21,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:23,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:23,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475689364] [2024-06-28 02:33:23,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475689364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:23,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:23,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:23,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027933590] [2024-06-28 02:33:23,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:23,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:23,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:23,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:23,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:23,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:23,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 169 transitions, 1098 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:23,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:23,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:23,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:23,660 INFO L124 PetriNetUnfolderBase]: 523/1036 cut-off events. [2024-06-28 02:33:23,661 INFO L125 PetriNetUnfolderBase]: For 93797/93797 co-relation queries the response was YES. [2024-06-28 02:33:23,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4309 conditions, 1036 events. 523/1036 cut-off events. For 93797/93797 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5701 event pairs, 134 based on Foata normal form. 6/1042 useless extension candidates. Maximal degree in co-relation 4194. Up to 946 conditions per place. [2024-06-28 02:33:23,669 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 160 selfloop transitions, 8 changer transitions 20/190 dead transitions. [2024-06-28 02:33:23,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 190 transitions, 1524 flow [2024-06-28 02:33:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:33:23,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:33:23,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-28 02:33:23,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2994791666666667 [2024-06-28 02:33:23,670 INFO L175 Difference]: Start difference. First operand has 271 places, 169 transitions, 1098 flow. Second operand 12 states and 115 transitions. [2024-06-28 02:33:23,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 190 transitions, 1524 flow [2024-06-28 02:33:23,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 190 transitions, 1494 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 02:33:23,872 INFO L231 Difference]: Finished difference. Result has 263 places, 163 transitions, 1058 flow [2024-06-28 02:33:23,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1058, PETRI_PLACES=263, PETRI_TRANSITIONS=163} [2024-06-28 02:33:23,873 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-28 02:33:23,873 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 163 transitions, 1058 flow [2024-06-28 02:33:23,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:23,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:23,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:23,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2024-06-28 02:33:23,873 INFO L420 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:23,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:23,874 INFO L85 PathProgramCache]: Analyzing trace with hash 724591376, now seen corresponding path program 24 times [2024-06-28 02:33:23,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:23,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376526105] [2024-06-28 02:33:23,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:23,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:25,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:25,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376526105] [2024-06-28 02:33:25,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376526105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:25,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:25,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:25,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086631003] [2024-06-28 02:33:25,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:25,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:25,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:25,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:25,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:25,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:25,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 163 transitions, 1058 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:25,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:25,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:25,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:26,286 INFO L124 PetriNetUnfolderBase]: 501/994 cut-off events. [2024-06-28 02:33:26,287 INFO L125 PetriNetUnfolderBase]: For 86581/86581 co-relation queries the response was YES. [2024-06-28 02:33:26,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4139 conditions, 994 events. 501/994 cut-off events. For 86581/86581 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5400 event pairs, 126 based on Foata normal form. 6/1000 useless extension candidates. Maximal degree in co-relation 4028. Up to 900 conditions per place. [2024-06-28 02:33:26,294 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 6 changer transitions 25/184 dead transitions. [2024-06-28 02:33:26,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 184 transitions, 1472 flow [2024-06-28 02:33:26,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:33:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:33:26,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-28 02:33:26,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2942708333333333 [2024-06-28 02:33:26,295 INFO L175 Difference]: Start difference. First operand has 263 places, 163 transitions, 1058 flow. Second operand 12 states and 113 transitions. [2024-06-28 02:33:26,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 184 transitions, 1472 flow [2024-06-28 02:33:26,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 184 transitions, 1444 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:33:26,469 INFO L231 Difference]: Finished difference. Result has 253 places, 156 transitions, 1009 flow [2024-06-28 02:33:26,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1009, PETRI_PLACES=253, PETRI_TRANSITIONS=156} [2024-06-28 02:33:26,469 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-28 02:33:26,470 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 156 transitions, 1009 flow [2024-06-28 02:33:26,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:26,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:26,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:26,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2024-06-28 02:33:26,470 INFO L420 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:26,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:26,470 INFO L85 PathProgramCache]: Analyzing trace with hash 714086588, now seen corresponding path program 25 times [2024-06-28 02:33:26,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:26,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870622947] [2024-06-28 02:33:26,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:26,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:28,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:28,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:28,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870622947] [2024-06-28 02:33:28,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870622947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:28,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:28,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:28,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775771856] [2024-06-28 02:33:28,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:28,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:28,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:28,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:28,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:28,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:28,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 156 transitions, 1009 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:28,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:28,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:28,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:29,193 INFO L124 PetriNetUnfolderBase]: 473/938 cut-off events. [2024-06-28 02:33:29,193 INFO L125 PetriNetUnfolderBase]: For 77976/77976 co-relation queries the response was YES. [2024-06-28 02:33:29,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3913 conditions, 938 events. 473/938 cut-off events. For 77976/77976 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5030 event pairs, 106 based on Foata normal form. 6/944 useless extension candidates. Maximal degree in co-relation 3807. Up to 779 conditions per place. [2024-06-28 02:33:29,200 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 134 selfloop transitions, 31 changer transitions 11/178 dead transitions. [2024-06-28 02:33:29,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 178 transitions, 1415 flow [2024-06-28 02:33:29,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:33:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:33:29,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-28 02:33:29,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-28 02:33:29,201 INFO L175 Difference]: Start difference. First operand has 253 places, 156 transitions, 1009 flow. Second operand 12 states and 120 transitions. [2024-06-28 02:33:29,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 178 transitions, 1415 flow [2024-06-28 02:33:29,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 178 transitions, 1381 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-28 02:33:29,385 INFO L231 Difference]: Finished difference. Result has 239 places, 153 transitions, 1025 flow [2024-06-28 02:33:29,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1025, PETRI_PLACES=239, PETRI_TRANSITIONS=153} [2024-06-28 02:33:29,385 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-28 02:33:29,385 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 153 transitions, 1025 flow [2024-06-28 02:33:29,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:29,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:29,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:29,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2024-06-28 02:33:29,386 INFO L420 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:29,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:29,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1872333594, now seen corresponding path program 26 times [2024-06-28 02:33:29,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:29,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055066363] [2024-06-28 02:33:29,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:29,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:31,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:31,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055066363] [2024-06-28 02:33:31,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055066363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:31,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:31,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:33:31,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537043153] [2024-06-28 02:33:31,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:31,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:33:31,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:31,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:33:31,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:33:31,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:31,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 153 transitions, 1025 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:31,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:31,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:31,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:31,517 INFO L124 PetriNetUnfolderBase]: 463/920 cut-off events. [2024-06-28 02:33:31,518 INFO L125 PetriNetUnfolderBase]: For 68318/68318 co-relation queries the response was YES. [2024-06-28 02:33:31,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3850 conditions, 920 events. 463/920 cut-off events. For 68318/68318 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4897 event pairs, 106 based on Foata normal form. 6/926 useless extension candidates. Maximal degree in co-relation 3750. Up to 734 conditions per place. [2024-06-28 02:33:31,525 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 29 changer transitions 15/176 dead transitions. [2024-06-28 02:33:31,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 176 transitions, 1431 flow [2024-06-28 02:33:31,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:33:31,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:33:31,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-28 02:33:31,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-28 02:33:31,526 INFO L175 Difference]: Start difference. First operand has 239 places, 153 transitions, 1025 flow. Second operand 12 states and 121 transitions. [2024-06-28 02:33:31,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 176 transitions, 1431 flow [2024-06-28 02:33:31,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 176 transitions, 1365 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:33:31,683 INFO L231 Difference]: Finished difference. Result has 236 places, 147 transitions, 979 flow [2024-06-28 02:33:31,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=979, PETRI_PLACES=236, PETRI_TRANSITIONS=147} [2024-06-28 02:33:31,683 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-28 02:33:31,683 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 147 transitions, 979 flow [2024-06-28 02:33:31,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:31,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:31,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:31,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2024-06-28 02:33:31,684 INFO L420 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:31,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:31,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1011214390, now seen corresponding path program 27 times [2024-06-28 02:33:31,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:31,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414012739] [2024-06-28 02:33:31,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:31,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:33,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:33,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414012739] [2024-06-28 02:33:33,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414012739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:33,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:33,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:33,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236939826] [2024-06-28 02:33:33,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:33,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:33,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:33,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:33,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:33,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:33,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 147 transitions, 979 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:33,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:33,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:33,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:33,782 INFO L124 PetriNetUnfolderBase]: 448/891 cut-off events. [2024-06-28 02:33:33,783 INFO L125 PetriNetUnfolderBase]: For 66750/66750 co-relation queries the response was YES. [2024-06-28 02:33:33,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3733 conditions, 891 events. 448/891 cut-off events. For 66750/66750 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4712 event pairs, 104 based on Foata normal form. 6/897 useless extension candidates. Maximal degree in co-relation 3634. Up to 732 conditions per place. [2024-06-28 02:33:33,790 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 24 changer transitions 18/169 dead transitions. [2024-06-28 02:33:33,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 169 transitions, 1367 flow [2024-06-28 02:33:33,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:33:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:33:33,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-28 02:33:33,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-28 02:33:33,791 INFO L175 Difference]: Start difference. First operand has 236 places, 147 transitions, 979 flow. Second operand 12 states and 119 transitions. [2024-06-28 02:33:33,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 169 transitions, 1367 flow [2024-06-28 02:33:33,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 169 transitions, 1303 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:33:33,972 INFO L231 Difference]: Finished difference. Result has 230 places, 140 transitions, 921 flow [2024-06-28 02:33:33,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=921, PETRI_PLACES=230, PETRI_TRANSITIONS=140} [2024-06-28 02:33:33,972 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-28 02:33:33,972 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 140 transitions, 921 flow [2024-06-28 02:33:33,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:33,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:33,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:33,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2024-06-28 02:33:33,973 INFO L420 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:33,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:33,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1573027582, now seen corresponding path program 28 times [2024-06-28 02:33:33,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:33,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396864677] [2024-06-28 02:33:33,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:33,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:35,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:35,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:35,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396864677] [2024-06-28 02:33:35,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396864677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:35,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:35,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:35,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437384150] [2024-06-28 02:33:35,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:35,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:35,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:35,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:35,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:36,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:36,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 140 transitions, 921 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:36,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:36,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:36,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:36,508 INFO L124 PetriNetUnfolderBase]: 429/854 cut-off events. [2024-06-28 02:33:36,508 INFO L125 PetriNetUnfolderBase]: For 63668/63668 co-relation queries the response was YES. [2024-06-28 02:33:36,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3575 conditions, 854 events. 429/854 cut-off events. For 63668/63668 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4459 event pairs, 104 based on Foata normal form. 6/860 useless extension candidates. Maximal degree in co-relation 3478. Up to 714 conditions per place. [2024-06-28 02:33:36,514 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 23 changer transitions 11/161 dead transitions. [2024-06-28 02:33:36,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 161 transitions, 1289 flow [2024-06-28 02:33:36,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:33:36,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:33:36,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-28 02:33:36,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-28 02:33:36,515 INFO L175 Difference]: Start difference. First operand has 230 places, 140 transitions, 921 flow. Second operand 12 states and 119 transitions. [2024-06-28 02:33:36,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 161 transitions, 1289 flow [2024-06-28 02:33:36,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 161 transitions, 1233 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:33:36,637 INFO L231 Difference]: Finished difference. Result has 222 places, 137 transitions, 899 flow [2024-06-28 02:33:36,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=899, PETRI_PLACES=222, PETRI_TRANSITIONS=137} [2024-06-28 02:33:36,638 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-28 02:33:36,638 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 137 transitions, 899 flow [2024-06-28 02:33:36,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:36,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:36,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:36,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2024-06-28 02:33:36,638 INFO L420 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:36,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:36,639 INFO L85 PathProgramCache]: Analyzing trace with hash 311171378, now seen corresponding path program 29 times [2024-06-28 02:33:36,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:36,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86059841] [2024-06-28 02:33:36,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:36,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:38,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:38,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86059841] [2024-06-28 02:33:38,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86059841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:38,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:38,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:38,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627453900] [2024-06-28 02:33:38,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:38,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:38,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:38,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:38,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:38,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:38,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 137 transitions, 899 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:38,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:38,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:38,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:39,246 INFO L124 PetriNetUnfolderBase]: 419/836 cut-off events. [2024-06-28 02:33:39,247 INFO L125 PetriNetUnfolderBase]: For 59222/59222 co-relation queries the response was YES. [2024-06-28 02:33:39,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3478 conditions, 836 events. 419/836 cut-off events. For 59222/59222 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4334 event pairs, 102 based on Foata normal form. 6/842 useless extension candidates. Maximal degree in co-relation 3384. Up to 696 conditions per place. [2024-06-28 02:33:39,253 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 121 selfloop transitions, 20 changer transitions 15/158 dead transitions. [2024-06-28 02:33:39,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 158 transitions, 1261 flow [2024-06-28 02:33:39,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:33:39,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:33:39,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-28 02:33:39,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-28 02:33:39,254 INFO L175 Difference]: Start difference. First operand has 222 places, 137 transitions, 899 flow. Second operand 12 states and 118 transitions. [2024-06-28 02:33:39,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 158 transitions, 1261 flow [2024-06-28 02:33:39,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 158 transitions, 1211 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:33:39,393 INFO L231 Difference]: Finished difference. Result has 219 places, 132 transitions, 865 flow [2024-06-28 02:33:39,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=865, PETRI_PLACES=219, PETRI_TRANSITIONS=132} [2024-06-28 02:33:39,393 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-28 02:33:39,393 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 132 transitions, 865 flow [2024-06-28 02:33:39,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:39,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:39,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:39,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2024-06-28 02:33:39,394 INFO L420 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:39,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:39,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1173943236, now seen corresponding path program 30 times [2024-06-28 02:33:39,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:39,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145248660] [2024-06-28 02:33:39,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:39,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:41,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:41,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:41,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145248660] [2024-06-28 02:33:41,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145248660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:41,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:41,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:41,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781996587] [2024-06-28 02:33:41,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:41,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:41,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:41,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:41,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:41,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:41,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 132 transitions, 865 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:41,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:41,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:41,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:41,621 INFO L124 PetriNetUnfolderBase]: 401/806 cut-off events. [2024-06-28 02:33:41,622 INFO L125 PetriNetUnfolderBase]: For 57746/57746 co-relation queries the response was YES. [2024-06-28 02:33:41,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3363 conditions, 806 events. 401/806 cut-off events. For 57746/57746 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4153 event pairs, 98 based on Foata normal form. 6/812 useless extension candidates. Maximal degree in co-relation 3270. Up to 668 conditions per place. [2024-06-28 02:33:41,626 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 115 selfloop transitions, 14 changer transitions 22/153 dead transitions. [2024-06-28 02:33:41,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 153 transitions, 1217 flow [2024-06-28 02:33:41,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:33:41,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:33:41,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-28 02:33:41,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3046875 [2024-06-28 02:33:41,627 INFO L175 Difference]: Start difference. First operand has 219 places, 132 transitions, 865 flow. Second operand 12 states and 117 transitions. [2024-06-28 02:33:41,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 153 transitions, 1217 flow [2024-06-28 02:33:41,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 153 transitions, 1169 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:33:41,737 INFO L231 Difference]: Finished difference. Result has 213 places, 123 transitions, 787 flow [2024-06-28 02:33:41,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=787, PETRI_PLACES=213, PETRI_TRANSITIONS=123} [2024-06-28 02:33:41,738 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-28 02:33:41,738 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 123 transitions, 787 flow [2024-06-28 02:33:41,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:41,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:41,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:41,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2024-06-28 02:33:41,738 INFO L420 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:41,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:41,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2005579588, now seen corresponding path program 31 times [2024-06-28 02:33:41,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:41,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322165059] [2024-06-28 02:33:41,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:41,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:43,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:43,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:43,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322165059] [2024-06-28 02:33:43,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322165059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:43,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:43,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:43,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456385887] [2024-06-28 02:33:43,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:43,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:43,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:43,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:43,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:44,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:44,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 123 transitions, 787 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:44,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:44,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:44,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:44,651 INFO L124 PetriNetUnfolderBase]: 376/755 cut-off events. [2024-06-28 02:33:44,652 INFO L125 PetriNetUnfolderBase]: For 53452/53452 co-relation queries the response was YES. [2024-06-28 02:33:44,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3150 conditions, 755 events. 376/755 cut-off events. For 53452/53452 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3798 event pairs, 98 based on Foata normal form. 6/761 useless extension candidates. Maximal degree in co-relation 3060. Up to 650 conditions per place. [2024-06-28 02:33:44,656 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 17 changer transitions 11/142 dead transitions. [2024-06-28 02:33:44,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 142 transitions, 1111 flow [2024-06-28 02:33:44,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:33:44,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:33:44,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-28 02:33:44,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2942708333333333 [2024-06-28 02:33:44,657 INFO L175 Difference]: Start difference. First operand has 213 places, 123 transitions, 787 flow. Second operand 12 states and 113 transitions. [2024-06-28 02:33:44,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 142 transitions, 1111 flow [2024-06-28 02:33:44,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 142 transitions, 1071 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 02:33:44,765 INFO L231 Difference]: Finished difference. Result has 202 places, 120 transitions, 769 flow [2024-06-28 02:33:44,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=769, PETRI_PLACES=202, PETRI_TRANSITIONS=120} [2024-06-28 02:33:44,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-28 02:33:44,765 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 120 transitions, 769 flow [2024-06-28 02:33:44,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:44,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:44,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:44,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2024-06-28 02:33:44,766 INFO L420 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:44,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:44,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2005752568, now seen corresponding path program 32 times [2024-06-28 02:33:44,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:44,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187922124] [2024-06-28 02:33:44,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:44,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:46,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:46,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187922124] [2024-06-28 02:33:46,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187922124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:46,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:46,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:46,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523717192] [2024-06-28 02:33:46,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:46,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:46,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:46,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:46,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:46,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:46,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 120 transitions, 769 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:46,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:46,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:46,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:46,687 INFO L124 PetriNetUnfolderBase]: 366/737 cut-off events. [2024-06-28 02:33:46,687 INFO L125 PetriNetUnfolderBase]: For 46752/46752 co-relation queries the response was YES. [2024-06-28 02:33:46,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3043 conditions, 737 events. 366/737 cut-off events. For 46752/46752 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3700 event pairs, 96 based on Foata normal form. 6/743 useless extension candidates. Maximal degree in co-relation 2958. Up to 632 conditions per place. [2024-06-28 02:33:46,692 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 108 selfloop transitions, 14 changer transitions 15/139 dead transitions. [2024-06-28 02:33:46,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 139 transitions, 1087 flow [2024-06-28 02:33:46,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:33:46,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:33:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-28 02:33:46,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2916666666666667 [2024-06-28 02:33:46,693 INFO L175 Difference]: Start difference. First operand has 202 places, 120 transitions, 769 flow. Second operand 12 states and 112 transitions. [2024-06-28 02:33:46,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 139 transitions, 1087 flow [2024-06-28 02:33:46,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 139 transitions, 1049 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:33:46,778 INFO L231 Difference]: Finished difference. Result has 199 places, 115 transitions, 735 flow [2024-06-28 02:33:46,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=735, PETRI_PLACES=199, PETRI_TRANSITIONS=115} [2024-06-28 02:33:46,778 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-28 02:33:46,779 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 115 transitions, 735 flow [2024-06-28 02:33:46,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:46,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:46,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:46,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2024-06-28 02:33:46,779 INFO L420 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:46,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:46,779 INFO L85 PathProgramCache]: Analyzing trace with hash 58170068, now seen corresponding path program 33 times [2024-06-28 02:33:46,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:46,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629132658] [2024-06-28 02:33:46,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:46,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:48,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:48,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:48,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629132658] [2024-06-28 02:33:48,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629132658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:48,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:48,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:33:48,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148846473] [2024-06-28 02:33:48,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:48,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:33:48,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:48,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:33:48,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:33:48,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:48,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 115 transitions, 735 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:48,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:48,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:48,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:48,714 INFO L124 PetriNetUnfolderBase]: 348/707 cut-off events. [2024-06-28 02:33:48,714 INFO L125 PetriNetUnfolderBase]: For 45460/45460 co-relation queries the response was YES. [2024-06-28 02:33:48,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2928 conditions, 707 events. 348/707 cut-off events. For 45460/45460 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3542 event pairs, 92 based on Foata normal form. 6/713 useless extension candidates. Maximal degree in co-relation 2844. Up to 604 conditions per place. [2024-06-28 02:33:48,718 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 103 selfloop transitions, 10 changer transitions 19/134 dead transitions. [2024-06-28 02:33:48,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 134 transitions, 1043 flow [2024-06-28 02:33:48,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:33:48,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:33:48,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 111 transitions. [2024-06-28 02:33:48,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2890625 [2024-06-28 02:33:48,719 INFO L175 Difference]: Start difference. First operand has 199 places, 115 transitions, 735 flow. Second operand 12 states and 111 transitions. [2024-06-28 02:33:48,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 134 transitions, 1043 flow [2024-06-28 02:33:48,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 134 transitions, 1007 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:33:48,792 INFO L231 Difference]: Finished difference. Result has 193 places, 108 transitions, 679 flow [2024-06-28 02:33:48,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=679, PETRI_PLACES=193, PETRI_TRANSITIONS=108} [2024-06-28 02:33:48,792 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-28 02:33:48,792 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 108 transitions, 679 flow [2024-06-28 02:33:48,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:48,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:48,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:48,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2024-06-28 02:33:48,793 INFO L420 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:48,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:48,793 INFO L85 PathProgramCache]: Analyzing trace with hash -640397774, now seen corresponding path program 34 times [2024-06-28 02:33:48,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:48,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278894299] [2024-06-28 02:33:48,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:48,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:51,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:51,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278894299] [2024-06-28 02:33:51,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278894299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:51,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:51,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:51,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199679627] [2024-06-28 02:33:51,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:51,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:51,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:51,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:51,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:51,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:51,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 108 transitions, 679 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:51,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:51,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:51,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:51,791 INFO L124 PetriNetUnfolderBase]: 324/663 cut-off events. [2024-06-28 02:33:51,791 INFO L125 PetriNetUnfolderBase]: For 41670/41670 co-relation queries the response was YES. [2024-06-28 02:33:51,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2743 conditions, 663 events. 324/663 cut-off events. For 41670/41670 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3248 event pairs, 86 based on Foata normal form. 6/669 useless extension candidates. Maximal degree in co-relation 2662. Up to 568 conditions per place. [2024-06-28 02:33:51,796 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 92 selfloop transitions, 3 changer transitions 28/125 dead transitions. [2024-06-28 02:33:51,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 125 transitions, 965 flow [2024-06-28 02:33:51,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:33:51,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:33:51,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-28 02:33:51,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29261363636363635 [2024-06-28 02:33:51,797 INFO L175 Difference]: Start difference. First operand has 193 places, 108 transitions, 679 flow. Second operand 11 states and 103 transitions. [2024-06-28 02:33:51,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 125 transitions, 965 flow [2024-06-28 02:33:51,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 125 transitions, 919 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 02:33:51,870 INFO L231 Difference]: Finished difference. Result has 182 places, 96 transitions, 567 flow [2024-06-28 02:33:51,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=567, PETRI_PLACES=182, PETRI_TRANSITIONS=96} [2024-06-28 02:33:51,871 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-28 02:33:51,871 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 96 transitions, 567 flow [2024-06-28 02:33:51,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:51,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:51,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:51,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2024-06-28 02:33:51,871 INFO L420 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:51,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:51,872 INFO L85 PathProgramCache]: Analyzing trace with hash 860870076, now seen corresponding path program 35 times [2024-06-28 02:33:51,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:51,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38524962] [2024-06-28 02:33:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:51,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:53,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:53,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38524962] [2024-06-28 02:33:53,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38524962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:53,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:53,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:53,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630648924] [2024-06-28 02:33:53,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:53,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:53,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:53,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:53,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:53,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:53,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 96 transitions, 567 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:53,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:53,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:53,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:54,274 INFO L124 PetriNetUnfolderBase]: 293/596 cut-off events. [2024-06-28 02:33:54,275 INFO L125 PetriNetUnfolderBase]: For 36830/36830 co-relation queries the response was YES. [2024-06-28 02:33:54,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 596 events. 293/596 cut-off events. For 36830/36830 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2876 event pairs, 58 based on Foata normal form. 6/602 useless extension candidates. Maximal degree in co-relation 2359. Up to 417 conditions per place. [2024-06-28 02:33:54,279 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 28 changer transitions 13/120 dead transitions. [2024-06-28 02:33:54,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 120 transitions, 863 flow [2024-06-28 02:33:54,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:33:54,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:33:54,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 02:33:54,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-28 02:33:54,280 INFO L175 Difference]: Start difference. First operand has 182 places, 96 transitions, 567 flow. Second operand 12 states and 125 transitions. [2024-06-28 02:33:54,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 120 transitions, 863 flow [2024-06-28 02:33:54,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 120 transitions, 809 flow, removed 14 selfloop flow, removed 15 redundant places. [2024-06-28 02:33:54,332 INFO L231 Difference]: Finished difference. Result has 163 places, 92 transitions, 561 flow [2024-06-28 02:33:54,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=561, PETRI_PLACES=163, PETRI_TRANSITIONS=92} [2024-06-28 02:33:54,332 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-28 02:33:54,332 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 92 transitions, 561 flow [2024-06-28 02:33:54,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:54,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:54,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:54,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2024-06-28 02:33:54,333 INFO L420 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:54,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:54,333 INFO L85 PathProgramCache]: Analyzing trace with hash 632795946, now seen corresponding path program 36 times [2024-06-28 02:33:54,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:54,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112018940] [2024-06-28 02:33:54,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:54,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:56,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:56,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112018940] [2024-06-28 02:33:56,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112018940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:56,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:56,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:56,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35209818] [2024-06-28 02:33:56,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:56,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:56,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:56,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:56,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:56,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:56,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 92 transitions, 561 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:56,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:56,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:56,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:56,862 INFO L124 PetriNetUnfolderBase]: 281/572 cut-off events. [2024-06-28 02:33:56,863 INFO L125 PetriNetUnfolderBase]: For 29256/29256 co-relation queries the response was YES. [2024-06-28 02:33:56,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2305 conditions, 572 events. 281/572 cut-off events. For 29256/29256 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2708 event pairs, 56 based on Foata normal form. 6/578 useless extension candidates. Maximal degree in co-relation 2238. Up to 407 conditions per place. [2024-06-28 02:33:56,865 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 72 selfloop transitions, 25 changer transitions 16/115 dead transitions. [2024-06-28 02:33:56,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 115 transitions, 835 flow [2024-06-28 02:33:56,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:33:56,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:33:56,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 02:33:56,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-28 02:33:56,866 INFO L175 Difference]: Start difference. First operand has 163 places, 92 transitions, 561 flow. Second operand 12 states and 123 transitions. [2024-06-28 02:33:56,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 115 transitions, 835 flow [2024-06-28 02:33:56,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 115 transitions, 773 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:33:56,913 INFO L231 Difference]: Finished difference. Result has 158 places, 87 transitions, 528 flow [2024-06-28 02:33:56,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=528, PETRI_PLACES=158, PETRI_TRANSITIONS=87} [2024-06-28 02:33:56,913 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-28 02:33:56,913 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 87 transitions, 528 flow [2024-06-28 02:33:56,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:56,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:56,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:56,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2024-06-28 02:33:56,914 INFO L420 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:33:56,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:56,914 INFO L85 PathProgramCache]: Analyzing trace with hash 450284298, now seen corresponding path program 37 times [2024-06-28 02:33:56,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:56,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47265285] [2024-06-28 02:33:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:56,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:59,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:59,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47265285] [2024-06-28 02:33:59,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47265285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:59,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:59,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:33:59,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469753775] [2024-06-28 02:33:59,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:59,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:33:59,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:59,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:33:59,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:33:59,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:33:59,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 87 transitions, 528 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:59,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:59,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:33:59,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:00,264 INFO L124 PetriNetUnfolderBase]: 265/540 cut-off events. [2024-06-28 02:34:00,264 INFO L125 PetriNetUnfolderBase]: For 27230/27230 co-relation queries the response was YES. [2024-06-28 02:34:00,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2187 conditions, 540 events. 265/540 cut-off events. For 27230/27230 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2523 event pairs, 54 based on Foata normal form. 6/546 useless extension candidates. Maximal degree in co-relation 2122. Up to 375 conditions per place. [2024-06-28 02:34:00,267 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 68 selfloop transitions, 28 changer transitions 13/111 dead transitions. [2024-06-28 02:34:00,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 111 transitions, 796 flow [2024-06-28 02:34:00,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:34:00,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:34:00,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-28 02:34:00,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-28 02:34:00,268 INFO L175 Difference]: Start difference. First operand has 158 places, 87 transitions, 528 flow. Second operand 12 states and 124 transitions. [2024-06-28 02:34:00,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 111 transitions, 796 flow [2024-06-28 02:34:00,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 111 transitions, 738 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:34:00,307 INFO L231 Difference]: Finished difference. Result has 151 places, 83 transitions, 508 flow [2024-06-28 02:34:00,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=508, PETRI_PLACES=151, PETRI_TRANSITIONS=83} [2024-06-28 02:34:00,307 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-28 02:34:00,307 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 83 transitions, 508 flow [2024-06-28 02:34:00,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:00,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:00,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:00,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2024-06-28 02:34:00,308 INFO L420 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:34:00,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:00,308 INFO L85 PathProgramCache]: Analyzing trace with hash 222383148, now seen corresponding path program 38 times [2024-06-28 02:34:00,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:00,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217507353] [2024-06-28 02:34:00,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:00,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:02,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:02,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217507353] [2024-06-28 02:34:02,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217507353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:02,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:02,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:34:02,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413087295] [2024-06-28 02:34:02,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:02,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:34:02,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:02,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:34:02,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:34:02,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:34:02,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 83 transitions, 508 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:02,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:02,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:34:02,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:02,600 INFO L124 PetriNetUnfolderBase]: 253/516 cut-off events. [2024-06-28 02:34:02,601 INFO L125 PetriNetUnfolderBase]: For 24322/24322 co-relation queries the response was YES. [2024-06-28 02:34:02,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2092 conditions, 516 events. 253/516 cut-off events. For 24322/24322 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2360 event pairs, 54 based on Foata normal form. 6/522 useless extension candidates. Maximal degree in co-relation 2030. Up to 365 conditions per place. [2024-06-28 02:34:02,603 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 65 selfloop transitions, 27 changer transitions 11/105 dead transitions. [2024-06-28 02:34:02,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 105 transitions, 760 flow [2024-06-28 02:34:02,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:34:02,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:34:02,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-28 02:34:02,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-28 02:34:02,604 INFO L175 Difference]: Start difference. First operand has 151 places, 83 transitions, 508 flow. Second operand 12 states and 120 transitions. [2024-06-28 02:34:02,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 105 transitions, 760 flow [2024-06-28 02:34:02,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 105 transitions, 698 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:34:02,637 INFO L231 Difference]: Finished difference. Result has 146 places, 80 transitions, 488 flow [2024-06-28 02:34:02,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=488, PETRI_PLACES=146, PETRI_TRANSITIONS=80} [2024-06-28 02:34:02,637 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-06-28 02:34:02,637 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 80 transitions, 488 flow [2024-06-28 02:34:02,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:02,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:02,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:02,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2024-06-28 02:34:02,638 INFO L420 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:34:02,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:02,638 INFO L85 PathProgramCache]: Analyzing trace with hash 222210168, now seen corresponding path program 39 times [2024-06-28 02:34:02,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:02,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252872922] [2024-06-28 02:34:02,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:02,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:04,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:04,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252872922] [2024-06-28 02:34:04,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252872922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:04,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:04,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:34:04,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881146966] [2024-06-28 02:34:04,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:04,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:34:04,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:04,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:34:04,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:34:04,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:34:04,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 80 transitions, 488 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:04,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:04,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:34:04,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:05,049 INFO L124 PetriNetUnfolderBase]: 243/498 cut-off events. [2024-06-28 02:34:05,049 INFO L125 PetriNetUnfolderBase]: For 22486/22486 co-relation queries the response was YES. [2024-06-28 02:34:05,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2012 conditions, 498 events. 243/498 cut-off events. For 22486/22486 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2253 event pairs, 52 based on Foata normal form. 6/504 useless extension candidates. Maximal degree in co-relation 1952. Up to 347 conditions per place. [2024-06-28 02:34:05,052 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 59 selfloop transitions, 23 changer transitions 18/102 dead transitions. [2024-06-28 02:34:05,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 102 transitions, 734 flow [2024-06-28 02:34:05,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:34:05,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:34:05,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-28 02:34:05,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-28 02:34:05,053 INFO L175 Difference]: Start difference. First operand has 146 places, 80 transitions, 488 flow. Second operand 12 states and 119 transitions. [2024-06-28 02:34:05,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 102 transitions, 734 flow [2024-06-28 02:34:05,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 102 transitions, 676 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:34:05,092 INFO L231 Difference]: Finished difference. Result has 143 places, 74 transitions, 449 flow [2024-06-28 02:34:05,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=449, PETRI_PLACES=143, PETRI_TRANSITIONS=74} [2024-06-28 02:34:05,092 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-28 02:34:05,092 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 74 transitions, 449 flow [2024-06-28 02:34:05,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:05,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:05,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:05,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2024-06-28 02:34:05,093 INFO L420 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:34:05,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1295448148, now seen corresponding path program 40 times [2024-06-28 02:34:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:05,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204089631] [2024-06-28 02:34:05,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:06,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:06,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204089631] [2024-06-28 02:34:06,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204089631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:06,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:06,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:34:06,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975737148] [2024-06-28 02:34:06,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:06,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:34:06,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:06,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:34:06,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:34:07,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:34:07,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 74 transitions, 449 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:07,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:07,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:34:07,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:07,464 INFO L124 PetriNetUnfolderBase]: 228/465 cut-off events. [2024-06-28 02:34:07,464 INFO L125 PetriNetUnfolderBase]: For 21582/21582 co-relation queries the response was YES. [2024-06-28 02:34:07,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1903 conditions, 465 events. 228/465 cut-off events. For 21582/21582 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2041 event pairs, 54 based on Foata normal form. 6/471 useless extension candidates. Maximal degree in co-relation 1844. Up to 329 conditions per place. [2024-06-28 02:34:07,467 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 61 selfloop transitions, 21 changer transitions 11/95 dead transitions. [2024-06-28 02:34:07,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 95 transitions, 679 flow [2024-06-28 02:34:07,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:34:07,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:34:07,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-28 02:34:07,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-28 02:34:07,467 INFO L175 Difference]: Start difference. First operand has 143 places, 74 transitions, 449 flow. Second operand 12 states and 118 transitions. [2024-06-28 02:34:07,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 95 transitions, 679 flow [2024-06-28 02:34:07,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 95 transitions, 623 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 02:34:07,499 INFO L231 Difference]: Finished difference. Result has 134 places, 71 transitions, 423 flow [2024-06-28 02:34:07,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=423, PETRI_PLACES=134, PETRI_TRANSITIONS=71} [2024-06-28 02:34:07,500 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-28 02:34:07,500 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 71 transitions, 423 flow [2024-06-28 02:34:07,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:07,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:07,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:07,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2024-06-28 02:34:07,500 INFO L420 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:34:07,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:07,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1295275168, now seen corresponding path program 41 times [2024-06-28 02:34:07,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:07,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999671253] [2024-06-28 02:34:07,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:07,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:09,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:09,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:09,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999671253] [2024-06-28 02:34:09,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999671253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:09,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:09,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:34:09,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817080913] [2024-06-28 02:34:09,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:09,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:34:09,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:09,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:34:09,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:34:09,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:34:09,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 71 transitions, 423 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:09,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:09,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:34:09,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:10,184 INFO L124 PetriNetUnfolderBase]: 218/447 cut-off events. [2024-06-28 02:34:10,185 INFO L125 PetriNetUnfolderBase]: For 18224/18224 co-relation queries the response was YES. [2024-06-28 02:34:10,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1789 conditions, 447 events. 218/447 cut-off events. For 18224/18224 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1934 event pairs, 52 based on Foata normal form. 6/453 useless extension candidates. Maximal degree in co-relation 1734. Up to 311 conditions per place. [2024-06-28 02:34:10,187 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 57 selfloop transitions, 19 changer transitions 14/92 dead transitions. [2024-06-28 02:34:10,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 92 transitions, 647 flow [2024-06-28 02:34:10,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:34:10,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:34:10,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-28 02:34:10,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3046875 [2024-06-28 02:34:10,188 INFO L175 Difference]: Start difference. First operand has 134 places, 71 transitions, 423 flow. Second operand 12 states and 117 transitions. [2024-06-28 02:34:10,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 92 transitions, 647 flow [2024-06-28 02:34:10,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 92 transitions, 601 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:34:10,209 INFO L231 Difference]: Finished difference. Result has 131 places, 67 transitions, 400 flow [2024-06-28 02:34:10,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=400, PETRI_PLACES=131, PETRI_TRANSITIONS=67} [2024-06-28 02:34:10,209 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-28 02:34:10,209 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 67 transitions, 400 flow [2024-06-28 02:34:10,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:10,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:10,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:10,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2024-06-28 02:34:10,209 INFO L420 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:34:10,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:10,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1255060898, now seen corresponding path program 42 times [2024-06-28 02:34:10,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:10,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457076009] [2024-06-28 02:34:10,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:10,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:12,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:12,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457076009] [2024-06-28 02:34:12,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457076009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:12,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:12,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:34:12,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945587627] [2024-06-28 02:34:12,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:12,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:34:12,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:12,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:34:12,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:34:12,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:34:12,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 67 transitions, 400 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:12,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:12,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:34:12,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:12,500 INFO L124 PetriNetUnfolderBase]: 204/421 cut-off events. [2024-06-28 02:34:12,500 INFO L125 PetriNetUnfolderBase]: For 17416/17416 co-relation queries the response was YES. [2024-06-28 02:34:12,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1702 conditions, 421 events. 204/421 cut-off events. For 17416/17416 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1768 event pairs, 48 based on Foata normal form. 6/427 useless extension candidates. Maximal degree in co-relation 1648. Up to 285 conditions per place. [2024-06-28 02:34:12,502 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 50 selfloop transitions, 15 changer transitions 21/88 dead transitions. [2024-06-28 02:34:12,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 88 transitions, 616 flow [2024-06-28 02:34:12,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:34:12,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:34:12,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-28 02:34:12,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2024-06-28 02:34:12,503 INFO L175 Difference]: Start difference. First operand has 131 places, 67 transitions, 400 flow. Second operand 12 states and 116 transitions. [2024-06-28 02:34:12,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 88 transitions, 616 flow [2024-06-28 02:34:12,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 88 transitions, 570 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:34:12,521 INFO L231 Difference]: Finished difference. Result has 125 places, 60 transitions, 353 flow [2024-06-28 02:34:12,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=353, PETRI_PLACES=125, PETRI_TRANSITIONS=60} [2024-06-28 02:34:12,521 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-28 02:34:12,521 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 60 transitions, 353 flow [2024-06-28 02:34:12,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:12,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:12,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:12,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2024-06-28 02:34:12,522 INFO L420 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:34:12,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:12,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1459332908, now seen corresponding path program 43 times [2024-06-28 02:34:12,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:12,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151565532] [2024-06-28 02:34:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:12,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:14,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:14,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151565532] [2024-06-28 02:34:14,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151565532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:14,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:14,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:34:14,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367526614] [2024-06-28 02:34:14,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:14,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:34:14,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:14,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:34:14,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:34:15,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:34:15,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 60 transitions, 353 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:15,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:15,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:34:15,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:15,382 INFO L124 PetriNetUnfolderBase]: 185/380 cut-off events. [2024-06-28 02:34:15,382 INFO L125 PetriNetUnfolderBase]: For 15114/15114 co-relation queries the response was YES. [2024-06-28 02:34:15,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1547 conditions, 380 events. 185/380 cut-off events. For 15114/15114 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1556 event pairs, 46 based on Foata normal form. 6/386 useless extension candidates. Maximal degree in co-relation 1496. Up to 237 conditions per place. [2024-06-28 02:34:15,384 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 44 selfloop transitions, 21 changer transitions 13/80 dead transitions. [2024-06-28 02:34:15,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 80 transitions, 551 flow [2024-06-28 02:34:15,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:34:15,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:34:15,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-28 02:34:15,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2942708333333333 [2024-06-28 02:34:15,384 INFO L175 Difference]: Start difference. First operand has 125 places, 60 transitions, 353 flow. Second operand 12 states and 113 transitions. [2024-06-28 02:34:15,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 80 transitions, 551 flow [2024-06-28 02:34:15,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 80 transitions, 507 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 02:34:15,399 INFO L231 Difference]: Finished difference. Result has 113 places, 56 transitions, 333 flow [2024-06-28 02:34:15,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=333, PETRI_PLACES=113, PETRI_TRANSITIONS=56} [2024-06-28 02:34:15,400 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-28 02:34:15,400 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 56 transitions, 333 flow [2024-06-28 02:34:15,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:15,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:15,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:15,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2024-06-28 02:34:15,400 INFO L420 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:34:15,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:15,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1231431758, now seen corresponding path program 44 times [2024-06-28 02:34:15,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:15,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277729717] [2024-06-28 02:34:15,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:15,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:17,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:17,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277729717] [2024-06-28 02:34:17,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277729717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:17,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:17,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:34:17,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209885091] [2024-06-28 02:34:17,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:17,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:34:17,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:17,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:34:17,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:34:17,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:34:17,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 56 transitions, 333 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:17,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:17,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:34:17,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:17,745 INFO L124 PetriNetUnfolderBase]: 173/356 cut-off events. [2024-06-28 02:34:17,745 INFO L125 PetriNetUnfolderBase]: For 11008/11008 co-relation queries the response was YES. [2024-06-28 02:34:17,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1419 conditions, 356 events. 173/356 cut-off events. For 11008/11008 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1415 event pairs, 52 based on Foata normal form. 6/362 useless extension candidates. Maximal degree in co-relation 1374. Up to 243 conditions per place. [2024-06-28 02:34:17,747 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 45 selfloop transitions, 18 changer transitions 9/74 dead transitions. [2024-06-28 02:34:17,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 74 transitions, 515 flow [2024-06-28 02:34:17,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:34:17,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:34:17,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-28 02:34:17,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039772727272727 [2024-06-28 02:34:17,748 INFO L175 Difference]: Start difference. First operand has 113 places, 56 transitions, 333 flow. Second operand 11 states and 107 transitions. [2024-06-28 02:34:17,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 74 transitions, 515 flow [2024-06-28 02:34:17,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 74 transitions, 467 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:34:17,760 INFO L231 Difference]: Finished difference. Result has 107 places, 53 transitions, 309 flow [2024-06-28 02:34:17,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=309, PETRI_PLACES=107, PETRI_TRANSITIONS=53} [2024-06-28 02:34:17,760 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-28 02:34:17,760 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 53 transitions, 309 flow [2024-06-28 02:34:17,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:17,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:17,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:17,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2024-06-28 02:34:17,761 INFO L420 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:34:17,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:17,761 INFO L85 PathProgramCache]: Analyzing trace with hash -517841102, now seen corresponding path program 45 times [2024-06-28 02:34:17,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:17,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535940140] [2024-06-28 02:34:17,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:17,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:19,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:19,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:19,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535940140] [2024-06-28 02:34:19,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535940140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:19,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:19,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:34:19,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152383401] [2024-06-28 02:34:19,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:19,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:34:19,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:19,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:34:19,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:34:20,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:34:20,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 53 transitions, 309 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:20,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:20,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:34:20,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:20,483 INFO L124 PetriNetUnfolderBase]: 163/338 cut-off events. [2024-06-28 02:34:20,483 INFO L125 PetriNetUnfolderBase]: For 9780/9780 co-relation queries the response was YES. [2024-06-28 02:34:20,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 338 events. 163/338 cut-off events. For 9780/9780 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1316 event pairs, 44 based on Foata normal form. 6/344 useless extension candidates. Maximal degree in co-relation 1292. Up to 225 conditions per place. [2024-06-28 02:34:20,485 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 40 selfloop transitions, 15 changer transitions 16/73 dead transitions. [2024-06-28 02:34:20,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 73 transitions, 493 flow [2024-06-28 02:34:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:34:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:34:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-28 02:34:20,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2942708333333333 [2024-06-28 02:34:20,486 INFO L175 Difference]: Start difference. First operand has 107 places, 53 transitions, 309 flow. Second operand 12 states and 113 transitions. [2024-06-28 02:34:20,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 73 transitions, 493 flow [2024-06-28 02:34:20,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 73 transitions, 453 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:34:20,495 INFO L231 Difference]: Finished difference. Result has 105 places, 48 transitions, 278 flow [2024-06-28 02:34:20,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=278, PETRI_PLACES=105, PETRI_TRANSITIONS=48} [2024-06-28 02:34:20,495 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-28 02:34:20,495 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 48 transitions, 278 flow [2024-06-28 02:34:20,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:20,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:20,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:20,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2024-06-28 02:34:20,496 INFO L420 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:34:20,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:20,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1893910980, now seen corresponding path program 46 times [2024-06-28 02:34:20,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:20,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64589701] [2024-06-28 02:34:20,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:20,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:22,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:22,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:22,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64589701] [2024-06-28 02:34:22,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64589701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:22,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:22,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:34:22,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998284881] [2024-06-28 02:34:22,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:22,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:34:22,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:22,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:34:22,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:34:22,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:34:22,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 48 transitions, 278 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:22,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:22,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:34:22,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:23,189 INFO L124 PetriNetUnfolderBase]: 147/306 cut-off events. [2024-06-28 02:34:23,189 INFO L125 PetriNetUnfolderBase]: For 9188/9188 co-relation queries the response was YES. [2024-06-28 02:34:23,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 306 events. 147/306 cut-off events. For 9188/9188 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1151 event pairs, 44 based on Foata normal form. 6/312 useless extension candidates. Maximal degree in co-relation 1188. Up to 207 conditions per place. [2024-06-28 02:34:23,190 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 40 selfloop transitions, 14 changer transitions 11/67 dead transitions. [2024-06-28 02:34:23,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 67 transitions, 448 flow [2024-06-28 02:34:23,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:34:23,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:34:23,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-28 02:34:23,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2942708333333333 [2024-06-28 02:34:23,191 INFO L175 Difference]: Start difference. First operand has 105 places, 48 transitions, 278 flow. Second operand 12 states and 113 transitions. [2024-06-28 02:34:23,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 67 transitions, 448 flow [2024-06-28 02:34:23,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 67 transitions, 408 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 02:34:23,199 INFO L231 Difference]: Finished difference. Result has 97 places, 45 transitions, 254 flow [2024-06-28 02:34:23,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=254, PETRI_PLACES=97, PETRI_TRANSITIONS=45} [2024-06-28 02:34:23,200 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-28 02:34:23,200 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 45 transitions, 254 flow [2024-06-28 02:34:23,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:23,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:23,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:23,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2024-06-28 02:34:23,200 INFO L420 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:34:23,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:23,201 INFO L85 PathProgramCache]: Analyzing trace with hash -652129416, now seen corresponding path program 47 times [2024-06-28 02:34:23,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:23,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556571595] [2024-06-28 02:34:23,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:23,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:25,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:25,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556571595] [2024-06-28 02:34:25,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556571595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:25,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:25,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:34:25,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250658285] [2024-06-28 02:34:25,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:25,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:34:25,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:25,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:34:25,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:34:25,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:34:25,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 45 transitions, 254 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:25,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:25,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:34:25,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:25,386 INFO L124 PetriNetUnfolderBase]: 137/288 cut-off events. [2024-06-28 02:34:25,387 INFO L125 PetriNetUnfolderBase]: For 7044/7044 co-relation queries the response was YES. [2024-06-28 02:34:25,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1122 conditions, 288 events. 137/288 cut-off events. For 7044/7044 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1051 event pairs, 42 based on Foata normal form. 6/294 useless extension candidates. Maximal degree in co-relation 1084. Up to 189 conditions per place. [2024-06-28 02:34:25,388 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 36 selfloop transitions, 12 changer transitions 14/64 dead transitions. [2024-06-28 02:34:25,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 64 transitions, 418 flow [2024-06-28 02:34:25,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:34:25,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:34:25,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-28 02:34:25,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2916666666666667 [2024-06-28 02:34:25,389 INFO L175 Difference]: Start difference. First operand has 97 places, 45 transitions, 254 flow. Second operand 12 states and 112 transitions. [2024-06-28 02:34:25,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 64 transitions, 418 flow [2024-06-28 02:34:25,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 64 transitions, 386 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:34:25,396 INFO L231 Difference]: Finished difference. Result has 94 places, 41 transitions, 231 flow [2024-06-28 02:34:25,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=231, PETRI_PLACES=94, PETRI_TRANSITIONS=41} [2024-06-28 02:34:25,396 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-28 02:34:25,396 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 41 transitions, 231 flow [2024-06-28 02:34:25,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:25,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:25,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:25,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2024-06-28 02:34:25,397 INFO L420 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:34:25,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:25,397 INFO L85 PathProgramCache]: Analyzing trace with hash -656598066, now seen corresponding path program 48 times [2024-06-28 02:34:25,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:25,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611774549] [2024-06-28 02:34:25,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:25,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:27,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:27,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611774549] [2024-06-28 02:34:27,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611774549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:27,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:27,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:34:27,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887837573] [2024-06-28 02:34:27,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:27,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:34:27,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:27,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:34:27,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:34:27,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:34:27,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 41 transitions, 231 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:27,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:27,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:34:27,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:27,630 INFO L124 PetriNetUnfolderBase]: 123/262 cut-off events. [2024-06-28 02:34:27,631 INFO L125 PetriNetUnfolderBase]: For 6542/6542 co-relation queries the response was YES. [2024-06-28 02:34:27,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 262 events. 123/262 cut-off events. For 6542/6542 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 915 event pairs, 38 based on Foata normal form. 6/268 useless extension candidates. Maximal degree in co-relation 998. Up to 163 conditions per place. [2024-06-28 02:34:27,632 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 30 selfloop transitions, 9 changer transitions 19/60 dead transitions. [2024-06-28 02:34:27,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 60 transitions, 387 flow [2024-06-28 02:34:27,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:34:27,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:34:27,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 111 transitions. [2024-06-28 02:34:27,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2890625 [2024-06-28 02:34:27,633 INFO L175 Difference]: Start difference. First operand has 94 places, 41 transitions, 231 flow. Second operand 12 states and 111 transitions. [2024-06-28 02:34:27,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 60 transitions, 387 flow [2024-06-28 02:34:27,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 60 transitions, 355 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:34:27,639 INFO L231 Difference]: Finished difference. Result has 88 places, 35 transitions, 192 flow [2024-06-28 02:34:27,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=192, PETRI_PLACES=88, PETRI_TRANSITIONS=35} [2024-06-28 02:34:27,639 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-28 02:34:27,639 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 35 transitions, 192 flow [2024-06-28 02:34:27,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:27,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:27,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:27,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2024-06-28 02:34:27,640 INFO L420 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:34:27,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:27,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1488234418, now seen corresponding path program 49 times [2024-06-28 02:34:27,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:27,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775963661] [2024-06-28 02:34:27,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:27,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:30,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:30,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775963661] [2024-06-28 02:34:30,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775963661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:30,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:30,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:34:30,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648225962] [2024-06-28 02:34:30,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:30,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:34:30,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:30,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:34:30,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:34:30,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:34:30,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 35 transitions, 192 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:30,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:30,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:34:30,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:30,786 INFO L124 PetriNetUnfolderBase]: 88/189 cut-off events. [2024-06-28 02:34:30,787 INFO L125 PetriNetUnfolderBase]: For 3454/3454 co-relation queries the response was YES. [2024-06-28 02:34:30,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 189 events. 88/189 cut-off events. For 3454/3454 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 574 event pairs, 25 based on Foata normal form. 6/195 useless extension candidates. Maximal degree in co-relation 634. Up to 112 conditions per place. [2024-06-28 02:34:30,787 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 28 selfloop transitions, 10 changer transitions 11/51 dead transitions. [2024-06-28 02:34:30,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 51 transitions, 324 flow [2024-06-28 02:34:30,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:34:30,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:34:30,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 105 transitions. [2024-06-28 02:34:30,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2734375 [2024-06-28 02:34:30,788 INFO L175 Difference]: Start difference. First operand has 88 places, 35 transitions, 192 flow. Second operand 12 states and 105 transitions. [2024-06-28 02:34:30,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 51 transitions, 324 flow [2024-06-28 02:34:30,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 51 transitions, 292 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 02:34:30,791 INFO L231 Difference]: Finished difference. Result has 77 places, 32 transitions, 168 flow [2024-06-28 02:34:30,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=168, PETRI_PLACES=77, PETRI_TRANSITIONS=32} [2024-06-28 02:34:30,791 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-28 02:34:30,791 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 32 transitions, 168 flow [2024-06-28 02:34:30,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:30,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:30,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:30,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2024-06-28 02:34:30,792 INFO L420 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:34:30,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:30,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1488407398, now seen corresponding path program 50 times [2024-06-28 02:34:30,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:30,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878073409] [2024-06-28 02:34:30,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:30,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:32,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:32,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:32,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878073409] [2024-06-28 02:34:32,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878073409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:32,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:32,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:34:32,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854898778] [2024-06-28 02:34:32,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:32,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:34:32,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:32,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:34:32,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:34:32,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:34:32,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 32 transitions, 168 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:32,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:32,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:34:32,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:32,979 INFO L124 PetriNetUnfolderBase]: 78/171 cut-off events. [2024-06-28 02:34:32,979 INFO L125 PetriNetUnfolderBase]: For 2162/2162 co-relation queries the response was YES. [2024-06-28 02:34:32,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 171 events. 78/171 cut-off events. For 2162/2162 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 490 event pairs, 23 based on Foata normal form. 6/177 useless extension candidates. Maximal degree in co-relation 554. Up to 94 conditions per place. [2024-06-28 02:34:32,980 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 24 selfloop transitions, 8 changer transitions 14/48 dead transitions. [2024-06-28 02:34:32,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 48 transitions, 294 flow [2024-06-28 02:34:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:34:32,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:34:32,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 104 transitions. [2024-06-28 02:34:32,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2708333333333333 [2024-06-28 02:34:32,981 INFO L175 Difference]: Start difference. First operand has 77 places, 32 transitions, 168 flow. Second operand 12 states and 104 transitions. [2024-06-28 02:34:32,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 48 transitions, 294 flow [2024-06-28 02:34:32,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 48 transitions, 268 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:34:32,983 INFO L231 Difference]: Finished difference. Result has 72 places, 28 transitions, 143 flow [2024-06-28 02:34:32,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=143, PETRI_PLACES=72, PETRI_TRANSITIONS=28} [2024-06-28 02:34:32,983 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-28 02:34:32,983 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 28 transitions, 143 flow [2024-06-28 02:34:32,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:32,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:32,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:32,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2024-06-28 02:34:32,984 INFO L420 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:34:32,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:32,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1492876048, now seen corresponding path program 51 times [2024-06-28 02:34:32,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:32,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789336671] [2024-06-28 02:34:32,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:32,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:34,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:34,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789336671] [2024-06-28 02:34:34,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789336671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:34,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:34,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:34:34,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251326097] [2024-06-28 02:34:34,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:34,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:34:34,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:34,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:34:34,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:34:35,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:34:35,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 28 transitions, 143 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:35,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:35,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:34:35,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:35,313 INFO L124 PetriNetUnfolderBase]: 64/145 cut-off events. [2024-06-28 02:34:35,313 INFO L125 PetriNetUnfolderBase]: For 1730/1730 co-relation queries the response was YES. [2024-06-28 02:34:35,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 145 events. 64/145 cut-off events. For 1730/1730 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 369 event pairs, 19 based on Foata normal form. 6/151 useless extension candidates. Maximal degree in co-relation 468. Up to 68 conditions per place. [2024-06-28 02:34:35,314 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 19 selfloop transitions, 6 changer transitions 15/42 dead transitions. [2024-06-28 02:34:35,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 42 transitions, 253 flow [2024-06-28 02:34:35,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:34:35,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:34:35,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-28 02:34:35,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2727272727272727 [2024-06-28 02:34:35,315 INFO L175 Difference]: Start difference. First operand has 72 places, 28 transitions, 143 flow. Second operand 11 states and 96 transitions. [2024-06-28 02:34:35,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 42 transitions, 253 flow [2024-06-28 02:34:35,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 42 transitions, 229 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:34:35,316 INFO L231 Difference]: Finished difference. Result has 65 places, 23 transitions, 112 flow [2024-06-28 02:34:35,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=112, PETRI_PLACES=65, PETRI_TRANSITIONS=23} [2024-06-28 02:34:35,317 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-06-28 02:34:35,317 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 23 transitions, 112 flow [2024-06-28 02:34:35,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:35,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:35,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:35,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2024-06-28 02:34:35,317 INFO L420 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:34:35,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:35,317 INFO L85 PathProgramCache]: Analyzing trace with hash 942168848, now seen corresponding path program 52 times [2024-06-28 02:34:35,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:35,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163258330] [2024-06-28 02:34:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:35,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:37,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:37,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163258330] [2024-06-28 02:34:37,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163258330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:37,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:37,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 02:34:37,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817745117] [2024-06-28 02:34:37,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:37,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 02:34:37,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:37,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 02:34:37,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-06-28 02:34:37,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-28 02:34:37,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 23 transitions, 112 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:37,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:37,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-28 02:34:37,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:37,386 INFO L124 PetriNetUnfolderBase]: 31/78 cut-off events. [2024-06-28 02:34:37,386 INFO L125 PetriNetUnfolderBase]: For 592/592 co-relation queries the response was YES. [2024-06-28 02:34:37,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 78 events. 31/78 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 123 event pairs, 0 based on Foata normal form. 6/84 useless extension candidates. Maximal degree in co-relation 200. Up to 32 conditions per place. [2024-06-28 02:34:37,387 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2024-06-28 02:34:37,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 32 transitions, 162 flow [2024-06-28 02:34:37,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:34:37,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:34:37,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 86 transitions. [2024-06-28 02:34:37,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24431818181818182 [2024-06-28 02:34:37,387 INFO L175 Difference]: Start difference. First operand has 65 places, 23 transitions, 112 flow. Second operand 11 states and 86 transitions. [2024-06-28 02:34:37,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 32 transitions, 162 flow [2024-06-28 02:34:37,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 32 transitions, 130 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-28 02:34:37,388 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2024-06-28 02:34:37,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2024-06-28 02:34:37,388 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-28 02:34:37,388 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2024-06-28 02:34:37,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:37,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 02:34:37,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 02:34:37,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 02:34:37,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 02:34:37,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2024-06-28 02:34:37,392 INFO L445 BasicCegarLoop]: Path program histogram: [54, 52, 35, 32, 26, 20, 11, 10, 10, 8, 7, 6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:37,394 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 02:34:37,394 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 02:34:37,397 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 02:34:37,398 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 02:34:37,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 02:34:37 BasicIcfg [2024-06-28 02:34:37,399 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 02:34:37,400 INFO L158 Benchmark]: Toolchain (without parser) took 754423.65ms. Allocated memory was 127.9MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 65.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 362.8MB. Max. memory is 16.1GB. [2024-06-28 02:34:37,402 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 127.9MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:34:37,402 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 127.9MB. Free memory is still 93.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:34:37,403 INFO L158 Benchmark]: CACSL2BoogieTranslator took 676.87ms. Allocated memory was 127.9MB in the beginning and 195.0MB in the end (delta: 67.1MB). Free memory was 65.3MB in the beginning and 137.6MB in the end (delta: -72.3MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2024-06-28 02:34:37,403 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.16ms. Allocated memory is still 195.0MB. Free memory was 137.6MB in the beginning and 134.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 02:34:37,403 INFO L158 Benchmark]: Boogie Preprocessor took 55.01ms. Allocated memory is still 195.0MB. Free memory was 134.4MB in the beginning and 130.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 02:34:37,403 INFO L158 Benchmark]: RCFGBuilder took 691.41ms. Allocated memory is still 195.0MB. Free memory was 130.2MB in the beginning and 148.6MB in the end (delta: -18.4MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2024-06-28 02:34:37,403 INFO L158 Benchmark]: TraceAbstraction took 752930.89ms. Allocated memory was 195.0MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 147.6MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 377.1MB. Max. memory is 16.1GB. [2024-06-28 02:34:37,404 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 127.9MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 127.9MB. Free memory is still 93.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 676.87ms. Allocated memory was 127.9MB in the beginning and 195.0MB in the end (delta: 67.1MB). Free memory was 65.3MB in the beginning and 137.6MB in the end (delta: -72.3MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.16ms. Allocated memory is still 195.0MB. Free memory was 137.6MB in the beginning and 134.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.01ms. Allocated memory is still 195.0MB. Free memory was 134.4MB in the beginning and 130.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 691.41ms. Allocated memory is still 195.0MB. Free memory was 130.2MB in the beginning and 148.6MB in the end (delta: -18.4MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * TraceAbstraction took 752930.89ms. Allocated memory was 195.0MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 147.6MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 377.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 839]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 840]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 52 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 752.8s, OverallIterations: 317, TraceHistogramMax: 1, PathProgramHistogramMax: 54, EmptinessCheckTime: 0.0s, AutomataDifference: 334.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18914 SdHoareTripleChecker+Valid, 96.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16375 mSDsluCounter, 18428 SdHoareTripleChecker+Invalid, 84.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17233 mSDsCounter, 7501 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 161674 IncrementalHoareTripleChecker+Invalid, 169175 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7501 mSolverCounterUnsat, 1195 mSDtfsCounter, 161674 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4191 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 4134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11735 ImplicationChecksByTransitivity, 113.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4363occurred in iteration=177, InterpolantAutomatonStates: 3341, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 413.2s InterpolantComputationTime, 5574 NumberOfCodeBlocks, 5574 NumberOfCodeBlocksAsserted, 317 NumberOfCheckSat, 5257 ConstructedInterpolants, 0 QuantifiedInterpolants, 244644 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 317 InterpolantComputations, 317 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 02:34:37,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE