./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.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/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:43:10,144 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:43:10,210 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:43:10,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:43:10,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:43:10,241 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:43:10,242 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:43:10,242 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:43:10,243 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:43:10,246 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:43:10,246 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:43:10,246 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:43:10,247 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:43:10,248 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:43:10,248 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:43:10,249 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:43:10,249 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:43:10,249 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:43:10,249 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:43:10,250 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:43:10,251 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:43:10,251 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:43:10,251 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:43:10,251 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:43:10,252 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:43:10,252 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:43:10,252 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:43:10,252 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:43:10,253 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:43:10,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:43:10,254 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:43:10,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:43:10,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:43:10,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:43:10,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:43:10,255 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:43:10,255 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:43:10,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:43:10,256 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:43:10,256 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:43:10,256 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:43:10,256 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:43:10,256 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:43:10,257 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:43:10,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:43:10,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:43:10,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:43:10,507 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:43:10,507 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:43:10,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 01:43:11,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:43:11,928 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:43:11,929 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 01:43:11,945 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a50f2e98e/45ceacd10a0449f1b7a801a4dc4f3092/FLAGfd221b00b [2024-06-28 01:43:11,961 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a50f2e98e/45ceacd10a0449f1b7a801a4dc4f3092 [2024-06-28 01:43:11,963 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:43:11,964 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:43:11,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-28 01:43:12,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:43:12,092 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:43:12,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:43:12,093 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:43:12,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:43:12,097 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:43:11" (1/2) ... [2024-06-28 01:43:12,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f048ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:12, skipping insertion in model container [2024-06-28 01:43:12,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:43:11" (1/2) ... [2024-06-28 01:43:12,100 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@220d10ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:12, skipping insertion in model container [2024-06-28 01:43:12,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:43:12" (2/2) ... [2024-06-28 01:43:12,100 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f048ab and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:12, skipping insertion in model container [2024-06-28 01:43:12,100 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:43:12" (2/2) ... [2024-06-28 01:43:12,100 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:43:12,147 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:43:12,148 INFO L97 edCorrectnessWitness]: Location invariant before [L806-L806] (((((((((((((((! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:43:12,148 INFO L97 edCorrectnessWitness]: Location invariant before [L805-L805] (((((((((((((((! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:43:12,148 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:43:12,148 INFO L106 edCorrectnessWitness]: ghost_update [L803-L803] multithreaded = 1; [2024-06-28 01:43:12,186 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:43:12,324 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2024-06-28 01:43:12,498 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:43:12,511 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:43:12,541 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:43:12,591 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:43:12,620 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:43:12,620 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:12 WrapperNode [2024-06-28 01:43:12,620 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:43:12,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:43:12,621 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:43:12,621 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:43:12,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:12" (1/1) ... [2024-06-28 01:43:12,641 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:12" (1/1) ... [2024-06-28 01:43:12,677 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2024-06-28 01:43:12,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:43:12,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:43:12,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:43:12,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:43:12,686 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:12" (1/1) ... [2024-06-28 01:43:12,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:12" (1/1) ... [2024-06-28 01:43:12,689 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:12" (1/1) ... [2024-06-28 01:43:12,708 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 01:43:12,709 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:12" (1/1) ... [2024-06-28 01:43:12,709 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:12" (1/1) ... [2024-06-28 01:43:12,730 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:12" (1/1) ... [2024-06-28 01:43:12,731 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:12" (1/1) ... [2024-06-28 01:43:12,733 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:12" (1/1) ... [2024-06-28 01:43:12,734 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:12" (1/1) ... [2024-06-28 01:43:12,736 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:43:12,737 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:43:12,737 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:43:12,737 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:43:12,738 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:12" (1/1) ... [2024-06-28 01:43:12,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:43:12,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:43:12,759 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 01:43:12,776 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 01:43:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:43:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:43:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:43:12,787 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:43:12,788 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:43:12,788 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:43:12,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:43:12,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:43:12,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:43:12,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:43:12,789 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 01:43:12,872 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:43:12,874 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:43:13,151 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:43:13,151 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:43:13,273 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:43:13,273 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:43:13,273 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:43:13 BoogieIcfgContainer [2024-06-28 01:43:13,273 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:43:13,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:43:13,276 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:43:13,278 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:43:13,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:43:11" (1/4) ... [2024-06-28 01:43:13,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f06f235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:43:13, skipping insertion in model container [2024-06-28 01:43:13,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:43:12" (2/4) ... [2024-06-28 01:43:13,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f06f235 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:43:13, skipping insertion in model container [2024-06-28 01:43:13,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:12" (3/4) ... [2024-06-28 01:43:13,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f06f235 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:43:13, skipping insertion in model container [2024-06-28 01:43:13,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:43:13" (4/4) ... [2024-06-28 01:43:13,285 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 01:43:13,299 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:43:13,300 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:43:13,300 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:43:13,340 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:43:13,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-28 01:43:13,399 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-28 01:43:13,399 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:43:13,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-28 01:43:13,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-28 01:43:13,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-28 01:43:13,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:43:13,423 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;@50b1bd19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:43:13,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:43:13,429 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:43:13,429 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:43:13,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:43:13,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:13,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:43:13,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:13,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:13,459 INFO L85 PathProgramCache]: Analyzing trace with hash 313150133, now seen corresponding path program 1 times [2024-06-28 01:43:13,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:13,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001496223] [2024-06-28 01:43:13,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:13,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:14,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:14,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001496223] [2024-06-28 01:43:14,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001496223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:14,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:14,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:43:14,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656989304] [2024-06-28 01:43:14,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:14,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:43:14,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:14,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:43:14,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:43:14,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-28 01:43:14,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:14,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:14,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-28 01:43:14,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:14,711 INFO L124 PetriNetUnfolderBase]: 543/1069 cut-off events. [2024-06-28 01:43:14,712 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 01:43:14,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 1069 events. 543/1069 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5921 event pairs, 424 based on Foata normal form. 43/1003 useless extension candidates. Maximal degree in co-relation 1978. Up to 892 conditions per place. [2024-06-28 01:43:14,719 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 32 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-06-28 01:43:14,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 173 flow [2024-06-28 01:43:14,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:43:14,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:43:14,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-06-28 01:43:14,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6846846846846847 [2024-06-28 01:43:14,729 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 76 transitions. [2024-06-28 01:43:14,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 173 flow [2024-06-28 01:43:14,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:14,733 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-06-28 01:43:14,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-06-28 01:43:14,737 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-28 01:43:14,737 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-06-28 01:43:14,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:14,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:14,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:14,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:43:14,738 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:14,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:14,739 INFO L85 PathProgramCache]: Analyzing trace with hash 289967898, now seen corresponding path program 1 times [2024-06-28 01:43:14,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:14,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526653377] [2024-06-28 01:43:14,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:14,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:15,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:15,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526653377] [2024-06-28 01:43:15,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526653377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:15,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:15,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:43:15,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739558288] [2024-06-28 01:43:15,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:15,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:43:15,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:15,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:43:15,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:43:15,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 01:43:15,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:15,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:15,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 01:43:15,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:15,700 INFO L124 PetriNetUnfolderBase]: 621/1091 cut-off events. [2024-06-28 01:43:15,700 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-06-28 01:43:15,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 1091 events. 621/1091 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5521 event pairs, 273 based on Foata normal form. 2/1030 useless extension candidates. Maximal degree in co-relation 2356. Up to 997 conditions per place. [2024-06-28 01:43:15,706 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 42 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-06-28 01:43:15,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 248 flow [2024-06-28 01:43:15,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:43:15,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:43:15,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-06-28 01:43:15,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6418918918918919 [2024-06-28 01:43:15,708 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 4 states and 95 transitions. [2024-06-28 01:43:15,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 248 flow [2024-06-28 01:43:15,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:43:15,709 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 134 flow [2024-06-28 01:43:15,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-28 01:43:15,710 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-28 01:43:15,710 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 134 flow [2024-06-28 01:43:15,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:15,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:15,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:15,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:43:15,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:15,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:15,712 INFO L85 PathProgramCache]: Analyzing trace with hash 399071120, now seen corresponding path program 1 times [2024-06-28 01:43:15,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:15,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863053974] [2024-06-28 01:43:15,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:15,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:16,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:16,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863053974] [2024-06-28 01:43:16,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863053974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:16,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:16,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:43:16,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796831252] [2024-06-28 01:43:16,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:16,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:43:16,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:16,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:43:16,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:43:16,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 01:43:16,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:16,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:16,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 01:43:16,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:16,647 INFO L124 PetriNetUnfolderBase]: 613/1171 cut-off events. [2024-06-28 01:43:16,647 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2024-06-28 01:43:16,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2640 conditions, 1171 events. 613/1171 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6449 event pairs, 197 based on Foata normal form. 4/1083 useless extension candidates. Maximal degree in co-relation 2626. Up to 968 conditions per place. [2024-06-28 01:43:16,669 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 49 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2024-06-28 01:43:16,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 360 flow [2024-06-28 01:43:16,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:43:16,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:43:16,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-06-28 01:43:16,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6108108108108108 [2024-06-28 01:43:16,681 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 134 flow. Second operand 5 states and 113 transitions. [2024-06-28 01:43:16,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 360 flow [2024-06-28 01:43:16,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 334 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:16,684 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 231 flow [2024-06-28 01:43:16,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2024-06-28 01:43:16,685 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-06-28 01:43:16,685 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 231 flow [2024-06-28 01:43:16,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:16,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:16,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:16,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:43:16,686 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:16,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:16,686 INFO L85 PathProgramCache]: Analyzing trace with hash 386992459, now seen corresponding path program 1 times [2024-06-28 01:43:16,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:16,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148433660] [2024-06-28 01:43:16,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:16,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:16,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:16,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148433660] [2024-06-28 01:43:16,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148433660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:16,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:16,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:43:16,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360020234] [2024-06-28 01:43:16,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:16,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:43:16,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:16,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:43:16,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:43:16,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-06-28 01:43:16,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 01:43:16,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:16,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-06-28 01:43:16,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:16,807 INFO L124 PetriNetUnfolderBase]: 191/559 cut-off events. [2024-06-28 01:43:16,807 INFO L125 PetriNetUnfolderBase]: For 288/314 co-relation queries the response was YES. [2024-06-28 01:43:16,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 559 events. 191/559 cut-off events. For 288/314 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3541 event pairs, 48 based on Foata normal form. 10/532 useless extension candidates. Maximal degree in co-relation 1125. Up to 286 conditions per place. [2024-06-28 01:43:16,810 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 25 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-28 01:43:16,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 270 flow [2024-06-28 01:43:16,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:43:16,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:43:16,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-06-28 01:43:16,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7387387387387387 [2024-06-28 01:43:16,811 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 231 flow. Second operand 3 states and 82 transitions. [2024-06-28 01:43:16,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 270 flow [2024-06-28 01:43:16,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 266 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 01:43:16,813 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 198 flow [2024-06-28 01:43:16,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-06-28 01:43:16,814 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-28 01:43:16,814 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 198 flow [2024-06-28 01:43:16,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 01:43:16,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:16,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:16,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:43:16,815 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:16,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:16,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1657047827, now seen corresponding path program 1 times [2024-06-28 01:43:16,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:16,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685326311] [2024-06-28 01:43:16,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:16,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:17,955 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 01:43:17,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:17,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685326311] [2024-06-28 01:43:17,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685326311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:17,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:17,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:43:17,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834034753] [2024-06-28 01:43:17,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:17,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:43:17,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:17,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:43:17,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:43:18,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 01:43:18,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:18,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:18,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 01:43:18,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:18,290 INFO L124 PetriNetUnfolderBase]: 531/1016 cut-off events. [2024-06-28 01:43:18,290 INFO L125 PetriNetUnfolderBase]: For 732/732 co-relation queries the response was YES. [2024-06-28 01:43:18,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2455 conditions, 1016 events. 531/1016 cut-off events. For 732/732 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5404 event pairs, 130 based on Foata normal form. 4/977 useless extension candidates. Maximal degree in co-relation 2436. Up to 808 conditions per place. [2024-06-28 01:43:18,296 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 48 selfloop transitions, 12 changer transitions 1/70 dead transitions. [2024-06-28 01:43:18,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 378 flow [2024-06-28 01:43:18,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:43:18,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:43:18,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-28 01:43:18,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630630630630631 [2024-06-28 01:43:18,299 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 198 flow. Second operand 6 states and 125 transitions. [2024-06-28 01:43:18,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 378 flow [2024-06-28 01:43:18,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 70 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:18,304 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 219 flow [2024-06-28 01:43:18,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-28 01:43:18,307 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-06-28 01:43:18,308 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 219 flow [2024-06-28 01:43:18,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:18,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:18,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:18,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:43:18,312 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:18,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:18,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1762631065, now seen corresponding path program 1 times [2024-06-28 01:43:18,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:18,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631192328] [2024-06-28 01:43:18,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:18,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:18,765 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 01:43:18,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:18,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631192328] [2024-06-28 01:43:18,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631192328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:18,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:18,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:43:18,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767421493] [2024-06-28 01:43:18,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:18,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:43:18,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:18,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:43:18,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:43:18,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:43:18,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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 01:43:18,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:18,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:43:18,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:19,014 INFO L124 PetriNetUnfolderBase]: 452/897 cut-off events. [2024-06-28 01:43:19,015 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2024-06-28 01:43:19,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 897 events. 452/897 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4702 event pairs, 186 based on Foata normal form. 1/855 useless extension candidates. Maximal degree in co-relation 2245. Up to 738 conditions per place. [2024-06-28 01:43:19,019 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 48 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2024-06-28 01:43:19,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 388 flow [2024-06-28 01:43:19,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:43:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:43:19,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-28 01:43:19,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-28 01:43:19,021 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 219 flow. Second operand 5 states and 91 transitions. [2024-06-28 01:43:19,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 388 flow [2024-06-28 01:43:19,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 355 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:19,023 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 248 flow [2024-06-28 01:43:19,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-06-28 01:43:19,024 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-28 01:43:19,024 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 248 flow [2024-06-28 01:43:19,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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 01:43:19,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:19,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:19,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:43:19,025 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:19,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:19,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1193013464, now seen corresponding path program 1 times [2024-06-28 01:43:19,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:19,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130527616] [2024-06-28 01:43:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:19,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:19,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:19,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130527616] [2024-06-28 01:43:19,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130527616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:19,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:19,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:43:19,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937571566] [2024-06-28 01:43:19,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:19,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:43:19,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:19,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:43:19,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:43:19,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:43:19,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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 01:43:19,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:19,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:43:19,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:19,835 INFO L124 PetriNetUnfolderBase]: 537/1034 cut-off events. [2024-06-28 01:43:19,835 INFO L125 PetriNetUnfolderBase]: For 1074/1074 co-relation queries the response was YES. [2024-06-28 01:43:19,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2734 conditions, 1034 events. 537/1034 cut-off events. For 1074/1074 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5390 event pairs, 223 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 2710. Up to 860 conditions per place. [2024-06-28 01:43:19,840 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 55 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-28 01:43:19,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 71 transitions, 434 flow [2024-06-28 01:43:19,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:43:19,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:43:19,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 01:43:19,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-28 01:43:19,842 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 248 flow. Second operand 6 states and 104 transitions. [2024-06-28 01:43:19,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 71 transitions, 434 flow [2024-06-28 01:43:19,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 71 transitions, 425 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:19,844 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 274 flow [2024-06-28 01:43:19,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-06-28 01:43:19,845 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-06-28 01:43:19,845 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 274 flow [2024-06-28 01:43:19,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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 01:43:19,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:19,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:19,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:43:19,846 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:19,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:19,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1989702136, now seen corresponding path program 1 times [2024-06-28 01:43:19,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:19,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515263815] [2024-06-28 01:43:19,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:19,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:20,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:20,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:20,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515263815] [2024-06-28 01:43:20,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515263815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:20,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:20,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:43:20,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544265203] [2024-06-28 01:43:20,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:20,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:43:20,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:20,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:43:20,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:43:20,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:43:20,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 274 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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 01:43:20,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:20,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:43:20,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:20,568 INFO L124 PetriNetUnfolderBase]: 593/1135 cut-off events. [2024-06-28 01:43:20,568 INFO L125 PetriNetUnfolderBase]: For 1685/1685 co-relation queries the response was YES. [2024-06-28 01:43:20,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 1135 events. 593/1135 cut-off events. For 1685/1685 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6043 event pairs, 241 based on Foata normal form. 1/1089 useless extension candidates. Maximal degree in co-relation 3111. Up to 939 conditions per place. [2024-06-28 01:43:20,574 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 58 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2024-06-28 01:43:20,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 76 transitions, 483 flow [2024-06-28 01:43:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:43:20,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:43:20,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 01:43:20,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 01:43:20,577 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 274 flow. Second operand 6 states and 105 transitions. [2024-06-28 01:43:20,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 76 transitions, 483 flow [2024-06-28 01:43:20,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 464 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:20,581 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 321 flow [2024-06-28 01:43:20,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-06-28 01:43:20,582 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-06-28 01:43:20,582 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 321 flow [2024-06-28 01:43:20,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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 01:43:20,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:20,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:20,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:43:20,583 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:20,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:20,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1449650506, now seen corresponding path program 2 times [2024-06-28 01:43:20,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:20,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052331227] [2024-06-28 01:43:20,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:20,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:21,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:21,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052331227] [2024-06-28 01:43:21,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052331227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:21,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:21,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:43:21,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455825180] [2024-06-28 01:43:21,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:21,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:43:21,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:21,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:43:21,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:43:21,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:43:21,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 321 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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 01:43:21,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:21,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:43:21,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:21,484 INFO L124 PetriNetUnfolderBase]: 573/1091 cut-off events. [2024-06-28 01:43:21,484 INFO L125 PetriNetUnfolderBase]: For 2231/2243 co-relation queries the response was YES. [2024-06-28 01:43:21,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3246 conditions, 1091 events. 573/1091 cut-off events. For 2231/2243 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5767 event pairs, 218 based on Foata normal form. 9/1061 useless extension candidates. Maximal degree in co-relation 3218. Up to 887 conditions per place. [2024-06-28 01:43:21,490 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 57 selfloop transitions, 13 changer transitions 0/78 dead transitions. [2024-06-28 01:43:21,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 527 flow [2024-06-28 01:43:21,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:43:21,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:43:21,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 01:43:21,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-28 01:43:21,491 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 321 flow. Second operand 6 states and 106 transitions. [2024-06-28 01:43:21,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 527 flow [2024-06-28 01:43:21,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 78 transitions, 508 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:21,496 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 349 flow [2024-06-28 01:43:21,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=349, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-06-28 01:43:21,497 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2024-06-28 01:43:21,497 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 349 flow [2024-06-28 01:43:21,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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 01:43:21,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:21,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:21,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:43:21,497 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:21,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:21,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1671286618, now seen corresponding path program 1 times [2024-06-28 01:43:21,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:21,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662960800] [2024-06-28 01:43:21,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:21,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:22,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:22,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662960800] [2024-06-28 01:43:22,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662960800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:22,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:22,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:22,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382335703] [2024-06-28 01:43:22,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:22,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:22,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:22,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:22,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:22,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:43:22,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 349 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:22,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:22,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:43:22,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:22,531 INFO L124 PetriNetUnfolderBase]: 556/1077 cut-off events. [2024-06-28 01:43:22,531 INFO L125 PetriNetUnfolderBase]: For 2438/2438 co-relation queries the response was YES. [2024-06-28 01:43:22,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3302 conditions, 1077 events. 556/1077 cut-off events. For 2438/2438 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5705 event pairs, 324 based on Foata normal form. 1/1039 useless extension candidates. Maximal degree in co-relation 3273. Up to 877 conditions per place. [2024-06-28 01:43:22,537 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 67 selfloop transitions, 13 changer transitions 0/87 dead transitions. [2024-06-28 01:43:22,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 87 transitions, 607 flow [2024-06-28 01:43:22,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:22,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:22,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 01:43:22,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44256756756756754 [2024-06-28 01:43:22,539 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 349 flow. Second operand 8 states and 131 transitions. [2024-06-28 01:43:22,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 87 transitions, 607 flow [2024-06-28 01:43:22,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 87 transitions, 576 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:22,543 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 384 flow [2024-06-28 01:43:22,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=384, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2024-06-28 01:43:22,545 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-06-28 01:43:22,545 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 384 flow [2024-06-28 01:43:22,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:22,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:22,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:22,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:43:22,546 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:22,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:22,546 INFO L85 PathProgramCache]: Analyzing trace with hash -53431254, now seen corresponding path program 1 times [2024-06-28 01:43:22,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:22,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183242103] [2024-06-28 01:43:22,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:22,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:22,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:22,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:22,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183242103] [2024-06-28 01:43:22,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183242103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:22,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:22,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:22,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107645717] [2024-06-28 01:43:22,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:22,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:22,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:22,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:22,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:23,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:43:23,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 384 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:23,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:23,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:43:23,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:23,271 INFO L124 PetriNetUnfolderBase]: 630/1203 cut-off events. [2024-06-28 01:43:23,272 INFO L125 PetriNetUnfolderBase]: For 3313/3324 co-relation queries the response was YES. [2024-06-28 01:43:23,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3799 conditions, 1203 events. 630/1203 cut-off events. For 3313/3324 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6420 event pairs, 226 based on Foata normal form. 13/1167 useless extension candidates. Maximal degree in co-relation 3768. Up to 945 conditions per place. [2024-06-28 01:43:23,278 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 66 selfloop transitions, 28 changer transitions 0/102 dead transitions. [2024-06-28 01:43:23,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 102 transitions, 697 flow [2024-06-28 01:43:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:23,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:23,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 01:43:23,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:43:23,279 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 384 flow. Second operand 8 states and 144 transitions. [2024-06-28 01:43:23,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 102 transitions, 697 flow [2024-06-28 01:43:23,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 102 transitions, 670 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:23,283 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 505 flow [2024-06-28 01:43:23,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=505, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2024-06-28 01:43:23,284 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-06-28 01:43:23,284 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 505 flow [2024-06-28 01:43:23,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:23,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:23,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:23,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:43:23,285 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:23,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:23,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2106171610, now seen corresponding path program 2 times [2024-06-28 01:43:23,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:23,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625815289] [2024-06-28 01:43:23,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:23,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:23,792 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 01:43:23,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:23,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625815289] [2024-06-28 01:43:23,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625815289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:23,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:23,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:23,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722581168] [2024-06-28 01:43:23,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:23,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:23,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:23,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:23,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:23,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:43:23,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 505 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:23,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:23,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:43:23,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:24,191 INFO L124 PetriNetUnfolderBase]: 701/1302 cut-off events. [2024-06-28 01:43:24,191 INFO L125 PetriNetUnfolderBase]: For 4661/4664 co-relation queries the response was YES. [2024-06-28 01:43:24,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4797 conditions, 1302 events. 701/1302 cut-off events. For 4661/4664 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6807 event pairs, 223 based on Foata normal form. 5/1264 useless extension candidates. Maximal degree in co-relation 4763. Up to 1011 conditions per place. [2024-06-28 01:43:24,200 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 76 selfloop transitions, 42 changer transitions 0/126 dead transitions. [2024-06-28 01:43:24,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 126 transitions, 1045 flow [2024-06-28 01:43:24,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:24,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:24,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 01:43:24,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48986486486486486 [2024-06-28 01:43:24,202 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 505 flow. Second operand 8 states and 145 transitions. [2024-06-28 01:43:24,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 126 transitions, 1045 flow [2024-06-28 01:43:24,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 126 transitions, 968 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:24,208 INFO L231 Difference]: Finished difference. Result has 83 places, 100 transitions, 793 flow [2024-06-28 01:43:24,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=793, PETRI_PLACES=83, PETRI_TRANSITIONS=100} [2024-06-28 01:43:24,209 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2024-06-28 01:43:24,209 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 100 transitions, 793 flow [2024-06-28 01:43:24,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:24,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:24,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:24,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:43:24,210 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:24,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:24,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2106292727, now seen corresponding path program 1 times [2024-06-28 01:43:24,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:24,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979241330] [2024-06-28 01:43:24,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:24,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:24,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:24,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979241330] [2024-06-28 01:43:24,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979241330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:24,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:24,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:24,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815876108] [2024-06-28 01:43:24,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:24,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:24,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:24,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:24,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:24,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:24,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 100 transitions, 793 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 01:43:24,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:24,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:24,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:25,081 INFO L124 PetriNetUnfolderBase]: 769/1410 cut-off events. [2024-06-28 01:43:25,082 INFO L125 PetriNetUnfolderBase]: For 5963/5963 co-relation queries the response was YES. [2024-06-28 01:43:25,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5516 conditions, 1410 events. 769/1410 cut-off events. For 5963/5963 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7383 event pairs, 305 based on Foata normal form. 1/1363 useless extension candidates. Maximal degree in co-relation 5478. Up to 1203 conditions per place. [2024-06-28 01:43:25,093 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 108 selfloop transitions, 18 changer transitions 0/132 dead transitions. [2024-06-28 01:43:25,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 132 transitions, 1191 flow [2024-06-28 01:43:25,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:25,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 01:43:25,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44256756756756754 [2024-06-28 01:43:25,094 INFO L175 Difference]: Start difference. First operand has 83 places, 100 transitions, 793 flow. Second operand 8 states and 131 transitions. [2024-06-28 01:43:25,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 132 transitions, 1191 flow [2024-06-28 01:43:25,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 132 transitions, 1140 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:25,103 INFO L231 Difference]: Finished difference. Result has 90 places, 107 transitions, 847 flow [2024-06-28 01:43:25,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=847, PETRI_PLACES=90, PETRI_TRANSITIONS=107} [2024-06-28 01:43:25,104 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 49 predicate places. [2024-06-28 01:43:25,104 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 107 transitions, 847 flow [2024-06-28 01:43:25,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 01:43:25,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:25,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:25,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:43:25,105 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:25,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:25,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1573688484, now seen corresponding path program 3 times [2024-06-28 01:43:25,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:25,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930274293] [2024-06-28 01:43:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:25,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:25,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:25,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:25,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930274293] [2024-06-28 01:43:25,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930274293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:25,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:25,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:25,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359264193] [2024-06-28 01:43:25,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:25,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:25,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:25,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:25,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:25,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:43:25,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 107 transitions, 847 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:25,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:25,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:43:25,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:26,105 INFO L124 PetriNetUnfolderBase]: 771/1412 cut-off events. [2024-06-28 01:43:26,105 INFO L125 PetriNetUnfolderBase]: For 6990/6993 co-relation queries the response was YES. [2024-06-28 01:43:26,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5727 conditions, 1412 events. 771/1412 cut-off events. For 6990/6993 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7451 event pairs, 214 based on Foata normal form. 5/1368 useless extension candidates. Maximal degree in co-relation 5686. Up to 1051 conditions per place. [2024-06-28 01:43:26,120 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 85 selfloop transitions, 50 changer transitions 0/144 dead transitions. [2024-06-28 01:43:26,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 144 transitions, 1352 flow [2024-06-28 01:43:26,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:26,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 01:43:26,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-28 01:43:26,123 INFO L175 Difference]: Start difference. First operand has 90 places, 107 transitions, 847 flow. Second operand 8 states and 147 transitions. [2024-06-28 01:43:26,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 144 transitions, 1352 flow [2024-06-28 01:43:26,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 144 transitions, 1311 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:26,134 INFO L231 Difference]: Finished difference. Result has 95 places, 116 transitions, 1031 flow [2024-06-28 01:43:26,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1031, PETRI_PLACES=95, PETRI_TRANSITIONS=116} [2024-06-28 01:43:26,135 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 54 predicate places. [2024-06-28 01:43:26,135 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 116 transitions, 1031 flow [2024-06-28 01:43:26,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:26,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:26,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:26,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:43:26,136 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:26,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1241596764, now seen corresponding path program 4 times [2024-06-28 01:43:26,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:26,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356967594] [2024-06-28 01:43:26,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:26,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:26,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:26,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:26,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356967594] [2024-06-28 01:43:26,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356967594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:26,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:26,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:26,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141310002] [2024-06-28 01:43:26,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:26,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:26,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:26,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:26,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:26,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:43:26,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 116 transitions, 1031 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:26,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:26,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:43:26,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:27,071 INFO L124 PetriNetUnfolderBase]: 790/1433 cut-off events. [2024-06-28 01:43:27,072 INFO L125 PetriNetUnfolderBase]: For 8896/8900 co-relation queries the response was YES. [2024-06-28 01:43:27,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6309 conditions, 1433 events. 790/1433 cut-off events. For 8896/8900 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7572 event pairs, 197 based on Foata normal form. 5/1392 useless extension candidates. Maximal degree in co-relation 6266. Up to 1101 conditions per place. [2024-06-28 01:43:27,083 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 82 selfloop transitions, 50 changer transitions 0/141 dead transitions. [2024-06-28 01:43:27,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 141 transitions, 1421 flow [2024-06-28 01:43:27,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:27,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 01:43:27,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942084942084942 [2024-06-28 01:43:27,088 INFO L175 Difference]: Start difference. First operand has 95 places, 116 transitions, 1031 flow. Second operand 7 states and 128 transitions. [2024-06-28 01:43:27,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 141 transitions, 1421 flow [2024-06-28 01:43:27,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 141 transitions, 1327 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:27,104 INFO L231 Difference]: Finished difference. Result has 97 places, 119 transitions, 1097 flow [2024-06-28 01:43:27,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1097, PETRI_PLACES=97, PETRI_TRANSITIONS=119} [2024-06-28 01:43:27,104 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 56 predicate places. [2024-06-28 01:43:27,104 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 119 transitions, 1097 flow [2024-06-28 01:43:27,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:27,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:27,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:27,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:43:27,105 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:27,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:27,106 INFO L85 PathProgramCache]: Analyzing trace with hash -448606823, now seen corresponding path program 2 times [2024-06-28 01:43:27,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:27,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166801841] [2024-06-28 01:43:27,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:27,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:27,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:27,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:27,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166801841] [2024-06-28 01:43:27,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166801841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:27,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:27,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:27,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297060637] [2024-06-28 01:43:27,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:27,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:27,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:27,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:27,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:27,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:27,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 119 transitions, 1097 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 01:43:27,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:27,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:27,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:28,040 INFO L124 PetriNetUnfolderBase]: 838/1505 cut-off events. [2024-06-28 01:43:28,040 INFO L125 PetriNetUnfolderBase]: For 9956/9956 co-relation queries the response was YES. [2024-06-28 01:43:28,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6831 conditions, 1505 events. 838/1505 cut-off events. For 9956/9956 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7874 event pairs, 293 based on Foata normal form. 1/1461 useless extension candidates. Maximal degree in co-relation 6787. Up to 1284 conditions per place. [2024-06-28 01:43:28,050 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 116 selfloop transitions, 22 changer transitions 0/144 dead transitions. [2024-06-28 01:43:28,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 144 transitions, 1502 flow [2024-06-28 01:43:28,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:28,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:28,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 01:43:28,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44787644787644787 [2024-06-28 01:43:28,052 INFO L175 Difference]: Start difference. First operand has 97 places, 119 transitions, 1097 flow. Second operand 7 states and 116 transitions. [2024-06-28 01:43:28,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 144 transitions, 1502 flow [2024-06-28 01:43:28,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 144 transitions, 1408 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:28,066 INFO L231 Difference]: Finished difference. Result has 99 places, 121 transitions, 1078 flow [2024-06-28 01:43:28,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1078, PETRI_PLACES=99, PETRI_TRANSITIONS=121} [2024-06-28 01:43:28,066 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 58 predicate places. [2024-06-28 01:43:28,067 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 121 transitions, 1078 flow [2024-06-28 01:43:28,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 01:43:28,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:28,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:28,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:43:28,068 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:28,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:28,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1241475864, now seen corresponding path program 5 times [2024-06-28 01:43:28,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:28,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719646130] [2024-06-28 01:43:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:28,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:28,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:28,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719646130] [2024-06-28 01:43:28,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719646130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:28,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:28,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:28,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069363328] [2024-06-28 01:43:28,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:28,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:28,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:28,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:28,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:28,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:43:28,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 121 transitions, 1078 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:28,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:28,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:43:28,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:29,028 INFO L124 PetriNetUnfolderBase]: 831/1506 cut-off events. [2024-06-28 01:43:29,029 INFO L125 PetriNetUnfolderBase]: For 11251/11259 co-relation queries the response was YES. [2024-06-28 01:43:29,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6980 conditions, 1506 events. 831/1506 cut-off events. For 11251/11259 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8017 event pairs, 184 based on Foata normal form. 8/1464 useless extension candidates. Maximal degree in co-relation 6935. Up to 1081 conditions per place. [2024-06-28 01:43:29,038 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 87 selfloop transitions, 56 changer transitions 0/153 dead transitions. [2024-06-28 01:43:29,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 153 transitions, 1607 flow [2024-06-28 01:43:29,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:29,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:29,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 01:43:29,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942084942084942 [2024-06-28 01:43:29,039 INFO L175 Difference]: Start difference. First operand has 99 places, 121 transitions, 1078 flow. Second operand 7 states and 128 transitions. [2024-06-28 01:43:29,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 153 transitions, 1607 flow [2024-06-28 01:43:29,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 153 transitions, 1557 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:29,055 INFO L231 Difference]: Finished difference. Result has 102 places, 130 transitions, 1309 flow [2024-06-28 01:43:29,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1309, PETRI_PLACES=102, PETRI_TRANSITIONS=130} [2024-06-28 01:43:29,056 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 61 predicate places. [2024-06-28 01:43:29,056 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 130 transitions, 1309 flow [2024-06-28 01:43:29,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:29,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:29,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:29,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:43:29,057 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:29,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:29,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1989491312, now seen corresponding path program 6 times [2024-06-28 01:43:29,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:29,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927693244] [2024-06-28 01:43:29,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:29,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:29,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:29,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:29,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927693244] [2024-06-28 01:43:29,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927693244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:29,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:29,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:29,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342058862] [2024-06-28 01:43:29,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:29,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:29,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:29,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:29,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:29,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:43:29,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 130 transitions, 1309 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:29,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:29,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:43:29,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:30,033 INFO L124 PetriNetUnfolderBase]: 819/1510 cut-off events. [2024-06-28 01:43:30,033 INFO L125 PetriNetUnfolderBase]: For 13264/13271 co-relation queries the response was YES. [2024-06-28 01:43:30,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7399 conditions, 1510 events. 819/1510 cut-off events. For 13264/13271 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8137 event pairs, 175 based on Foata normal form. 6/1459 useless extension candidates. Maximal degree in co-relation 7352. Up to 1025 conditions per place. [2024-06-28 01:43:30,044 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 93 selfloop transitions, 62 changer transitions 0/165 dead transitions. [2024-06-28 01:43:30,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 165 transitions, 1913 flow [2024-06-28 01:43:30,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:30,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:30,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 01:43:30,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49034749034749037 [2024-06-28 01:43:30,049 INFO L175 Difference]: Start difference. First operand has 102 places, 130 transitions, 1309 flow. Second operand 7 states and 127 transitions. [2024-06-28 01:43:30,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 165 transitions, 1913 flow [2024-06-28 01:43:30,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 165 transitions, 1826 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:30,071 INFO L231 Difference]: Finished difference. Result has 107 places, 143 transitions, 1579 flow [2024-06-28 01:43:30,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1579, PETRI_PLACES=107, PETRI_TRANSITIONS=143} [2024-06-28 01:43:30,072 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2024-06-28 01:43:30,072 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 143 transitions, 1579 flow [2024-06-28 01:43:30,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:30,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:30,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:30,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:43:30,073 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:30,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:30,073 INFO L85 PathProgramCache]: Analyzing trace with hash -270552743, now seen corresponding path program 3 times [2024-06-28 01:43:30,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:30,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231409228] [2024-06-28 01:43:30,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:30,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:30,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:30,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:30,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231409228] [2024-06-28 01:43:30,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231409228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:30,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:30,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:30,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669823236] [2024-06-28 01:43:30,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:30,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:30,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:30,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:30,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:30,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:30,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 143 transitions, 1579 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 01:43:30,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:30,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:30,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:30,977 INFO L124 PetriNetUnfolderBase]: 888/1596 cut-off events. [2024-06-28 01:43:30,978 INFO L125 PetriNetUnfolderBase]: For 14518/14518 co-relation queries the response was YES. [2024-06-28 01:43:30,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8294 conditions, 1596 events. 888/1596 cut-off events. For 14518/14518 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8448 event pairs, 277 based on Foata normal form. 1/1546 useless extension candidates. Maximal degree in co-relation 8244. Up to 1297 conditions per place. [2024-06-28 01:43:30,988 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 139 selfloop transitions, 30 changer transitions 0/175 dead transitions. [2024-06-28 01:43:30,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 175 transitions, 2192 flow [2024-06-28 01:43:30,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:30,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:30,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 01:43:30,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46332046332046334 [2024-06-28 01:43:30,990 INFO L175 Difference]: Start difference. First operand has 107 places, 143 transitions, 1579 flow. Second operand 7 states and 120 transitions. [2024-06-28 01:43:30,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 175 transitions, 2192 flow [2024-06-28 01:43:31,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 175 transitions, 2090 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:31,013 INFO L231 Difference]: Finished difference. Result has 112 places, 147 transitions, 1609 flow [2024-06-28 01:43:31,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1487, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1609, PETRI_PLACES=112, PETRI_TRANSITIONS=147} [2024-06-28 01:43:31,014 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 71 predicate places. [2024-06-28 01:43:31,014 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 147 transitions, 1609 flow [2024-06-28 01:43:31,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 01:43:31,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:31,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:31,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:43:31,015 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:31,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:31,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1555903603, now seen corresponding path program 4 times [2024-06-28 01:43:31,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:31,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463141998] [2024-06-28 01:43:31,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:31,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:31,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:31,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:31,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463141998] [2024-06-28 01:43:31,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463141998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:31,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:31,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:31,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683892819] [2024-06-28 01:43:31,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:31,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:31,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:31,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:31,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:31,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:31,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 147 transitions, 1609 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 01:43:31,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:31,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:31,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:32,003 INFO L124 PetriNetUnfolderBase]: 886/1590 cut-off events. [2024-06-28 01:43:32,003 INFO L125 PetriNetUnfolderBase]: For 14909/14909 co-relation queries the response was YES. [2024-06-28 01:43:32,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8398 conditions, 1590 events. 886/1590 cut-off events. For 14909/14909 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8395 event pairs, 276 based on Foata normal form. 1/1541 useless extension candidates. Maximal degree in co-relation 8346. Up to 1295 conditions per place. [2024-06-28 01:43:32,013 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 131 selfloop transitions, 37 changer transitions 0/174 dead transitions. [2024-06-28 01:43:32,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 174 transitions, 2126 flow [2024-06-28 01:43:32,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:32,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:32,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 01:43:32,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 01:43:32,015 INFO L175 Difference]: Start difference. First operand has 112 places, 147 transitions, 1609 flow. Second operand 8 states and 128 transitions. [2024-06-28 01:43:32,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 174 transitions, 2126 flow [2024-06-28 01:43:32,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 174 transitions, 2059 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:32,033 INFO L231 Difference]: Finished difference. Result has 117 places, 148 transitions, 1637 flow [2024-06-28 01:43:32,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1637, PETRI_PLACES=117, PETRI_TRANSITIONS=148} [2024-06-28 01:43:32,034 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 76 predicate places. [2024-06-28 01:43:32,034 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 148 transitions, 1637 flow [2024-06-28 01:43:32,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 01:43:32,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:32,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:32,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:43:32,035 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:32,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:32,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1188544373, now seen corresponding path program 1 times [2024-06-28 01:43:32,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:32,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400065335] [2024-06-28 01:43:32,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:32,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:32,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:32,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:32,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400065335] [2024-06-28 01:43:32,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400065335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:32,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:32,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:32,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656057120] [2024-06-28 01:43:32,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:32,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:32,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:32,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:32,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:32,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:43:32,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 148 transitions, 1637 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:43:32,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:32,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:43:32,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:33,200 INFO L124 PetriNetUnfolderBase]: 873/1597 cut-off events. [2024-06-28 01:43:33,201 INFO L125 PetriNetUnfolderBase]: For 15574/15590 co-relation queries the response was YES. [2024-06-28 01:43:33,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8499 conditions, 1597 events. 873/1597 cut-off events. For 15574/15590 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8673 event pairs, 256 based on Foata normal form. 7/1548 useless extension candidates. Maximal degree in co-relation 8445. Up to 1248 conditions per place. [2024-06-28 01:43:33,212 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 114 selfloop transitions, 60 changer transitions 0/186 dead transitions. [2024-06-28 01:43:33,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 186 transitions, 2248 flow [2024-06-28 01:43:33,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:33,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 01:43:33,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-28 01:43:33,214 INFO L175 Difference]: Start difference. First operand has 117 places, 148 transitions, 1637 flow. Second operand 8 states and 146 transitions. [2024-06-28 01:43:33,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 186 transitions, 2248 flow [2024-06-28 01:43:33,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 186 transitions, 2178 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:33,235 INFO L231 Difference]: Finished difference. Result has 122 places, 162 transitions, 1925 flow [2024-06-28 01:43:33,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1567, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1925, PETRI_PLACES=122, PETRI_TRANSITIONS=162} [2024-06-28 01:43:33,235 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 81 predicate places. [2024-06-28 01:43:33,236 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 162 transitions, 1925 flow [2024-06-28 01:43:33,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:43:33,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:33,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:33,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:43:33,236 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:33,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:33,237 INFO L85 PathProgramCache]: Analyzing trace with hash -987212635, now seen corresponding path program 1 times [2024-06-28 01:43:33,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:33,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958482094] [2024-06-28 01:43:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:33,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:33,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:33,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:33,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958482094] [2024-06-28 01:43:33,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958482094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:33,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:33,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:33,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696738110] [2024-06-28 01:43:33,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:33,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:33,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:33,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:33,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:33,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:33,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 162 transitions, 1925 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:33,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:33,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:33,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:34,143 INFO L124 PetriNetUnfolderBase]: 929/1670 cut-off events. [2024-06-28 01:43:34,143 INFO L125 PetriNetUnfolderBase]: For 17539/17539 co-relation queries the response was YES. [2024-06-28 01:43:34,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9251 conditions, 1670 events. 929/1670 cut-off events. For 17539/17539 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8876 event pairs, 220 based on Foata normal form. 2/1616 useless extension candidates. Maximal degree in co-relation 9193. Up to 1336 conditions per place. [2024-06-28 01:43:34,155 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 129 selfloop transitions, 59 changer transitions 0/194 dead transitions. [2024-06-28 01:43:34,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 194 transitions, 2471 flow [2024-06-28 01:43:34,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:34,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:34,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:43:34,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:43:34,173 INFO L175 Difference]: Start difference. First operand has 122 places, 162 transitions, 1925 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:43:34,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 194 transitions, 2471 flow [2024-06-28 01:43:34,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 194 transitions, 2394 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:34,200 INFO L231 Difference]: Finished difference. Result has 127 places, 165 transitions, 2017 flow [2024-06-28 01:43:34,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2017, PETRI_PLACES=127, PETRI_TRANSITIONS=165} [2024-06-28 01:43:34,201 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 86 predicate places. [2024-06-28 01:43:34,201 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 165 transitions, 2017 flow [2024-06-28 01:43:34,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:34,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:34,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:34,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:43:34,202 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:34,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash 378481281, now seen corresponding path program 2 times [2024-06-28 01:43:34,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:34,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050002968] [2024-06-28 01:43:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:34,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:34,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:34,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050002968] [2024-06-28 01:43:34,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050002968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:34,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:34,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:34,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975659412] [2024-06-28 01:43:34,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:34,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:34,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:34,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:34,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:35,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:43:35,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 165 transitions, 2017 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:43:35,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:35,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:43:35,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:35,454 INFO L124 PetriNetUnfolderBase]: 904/1636 cut-off events. [2024-06-28 01:43:35,454 INFO L125 PetriNetUnfolderBase]: For 19785/19802 co-relation queries the response was YES. [2024-06-28 01:43:35,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9420 conditions, 1636 events. 904/1636 cut-off events. For 19785/19802 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8797 event pairs, 228 based on Foata normal form. 11/1592 useless extension candidates. Maximal degree in co-relation 9362. Up to 1265 conditions per place. [2024-06-28 01:43:35,464 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 130 selfloop transitions, 59 changer transitions 0/202 dead transitions. [2024-06-28 01:43:35,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 202 transitions, 2704 flow [2024-06-28 01:43:35,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 01:43:35,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-28 01:43:35,467 INFO L175 Difference]: Start difference. First operand has 127 places, 165 transitions, 2017 flow. Second operand 8 states and 146 transitions. [2024-06-28 01:43:35,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 202 transitions, 2704 flow [2024-06-28 01:43:35,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 202 transitions, 2536 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:35,499 INFO L231 Difference]: Finished difference. Result has 129 places, 176 transitions, 2189 flow [2024-06-28 01:43:35,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1867, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2189, PETRI_PLACES=129, PETRI_TRANSITIONS=176} [2024-06-28 01:43:35,500 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2024-06-28 01:43:35,500 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 176 transitions, 2189 flow [2024-06-28 01:43:35,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:43:35,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:35,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:35,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:43:35,500 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:35,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:35,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1535956479, now seen corresponding path program 2 times [2024-06-28 01:43:35,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:35,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312503323] [2024-06-28 01:43:35,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:35,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:36,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:36,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312503323] [2024-06-28 01:43:36,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312503323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:36,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:36,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:36,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273577821] [2024-06-28 01:43:36,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:36,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:36,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:36,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:36,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:36,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:36,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 176 transitions, 2189 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:36,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:36,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:36,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:36,541 INFO L124 PetriNetUnfolderBase]: 977/1741 cut-off events. [2024-06-28 01:43:36,541 INFO L125 PetriNetUnfolderBase]: For 20891/20891 co-relation queries the response was YES. [2024-06-28 01:43:36,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9891 conditions, 1741 events. 977/1741 cut-off events. For 20891/20891 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9305 event pairs, 254 based on Foata normal form. 2/1687 useless extension candidates. Maximal degree in co-relation 9832. Up to 1397 conditions per place. [2024-06-28 01:43:36,552 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 142 selfloop transitions, 63 changer transitions 0/211 dead transitions. [2024-06-28 01:43:36,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 211 transitions, 2790 flow [2024-06-28 01:43:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:36,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:36,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 01:43:36,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-28 01:43:36,554 INFO L175 Difference]: Start difference. First operand has 129 places, 176 transitions, 2189 flow. Second operand 9 states and 154 transitions. [2024-06-28 01:43:36,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 211 transitions, 2790 flow [2024-06-28 01:43:36,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 211 transitions, 2707 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:36,585 INFO L231 Difference]: Finished difference. Result has 134 places, 182 transitions, 2310 flow [2024-06-28 01:43:36,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2108, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2310, PETRI_PLACES=134, PETRI_TRANSITIONS=182} [2024-06-28 01:43:36,586 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 93 predicate places. [2024-06-28 01:43:36,586 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 182 transitions, 2310 flow [2024-06-28 01:43:36,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:36,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:36,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:36,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:43:36,587 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:36,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:36,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1539704379, now seen corresponding path program 3 times [2024-06-28 01:43:36,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:36,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315990251] [2024-06-28 01:43:36,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:36,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:37,206 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 01:43:37,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:37,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315990251] [2024-06-28 01:43:37,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315990251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:37,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:37,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:37,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670103943] [2024-06-28 01:43:37,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:37,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:37,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:37,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:37,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:37,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:37,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 182 transitions, 2310 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:37,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:37,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:37,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:37,673 INFO L124 PetriNetUnfolderBase]: 1037/1831 cut-off events. [2024-06-28 01:43:37,673 INFO L125 PetriNetUnfolderBase]: For 23261/23261 co-relation queries the response was YES. [2024-06-28 01:43:37,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10680 conditions, 1831 events. 1037/1831 cut-off events. For 23261/23261 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9798 event pairs, 252 based on Foata normal form. 2/1776 useless extension candidates. Maximal degree in co-relation 10620. Up to 1315 conditions per place. [2024-06-28 01:43:37,684 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 136 selfloop transitions, 85 changer transitions 0/227 dead transitions. [2024-06-28 01:43:37,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 227 transitions, 3175 flow [2024-06-28 01:43:37,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:37,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:43:37,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-28 01:43:37,686 INFO L175 Difference]: Start difference. First operand has 134 places, 182 transitions, 2310 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:43:37,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 227 transitions, 3175 flow [2024-06-28 01:43:37,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 227 transitions, 3027 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:37,717 INFO L231 Difference]: Finished difference. Result has 137 places, 194 transitions, 2567 flow [2024-06-28 01:43:37,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2162, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2567, PETRI_PLACES=137, PETRI_TRANSITIONS=194} [2024-06-28 01:43:37,718 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 96 predicate places. [2024-06-28 01:43:37,718 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 194 transitions, 2567 flow [2024-06-28 01:43:37,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:37,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:37,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:37,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:43:37,718 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:37,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:37,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1761356177, now seen corresponding path program 1 times [2024-06-28 01:43:37,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:37,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882420957] [2024-06-28 01:43:37,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:37,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:38,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:38,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882420957] [2024-06-28 01:43:38,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882420957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:38,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:38,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:38,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323632949] [2024-06-28 01:43:38,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:38,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:38,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:38,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:38,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:38,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:38,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 194 transitions, 2567 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:38,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:38,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:38,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:38,708 INFO L124 PetriNetUnfolderBase]: 1050/1847 cut-off events. [2024-06-28 01:43:38,708 INFO L125 PetriNetUnfolderBase]: For 26465/26465 co-relation queries the response was YES. [2024-06-28 01:43:38,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11205 conditions, 1847 events. 1050/1847 cut-off events. For 26465/26465 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9877 event pairs, 337 based on Foata normal form. 1/1796 useless extension candidates. Maximal degree in co-relation 11143. Up to 1614 conditions per place. [2024-06-28 01:43:38,722 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 196 selfloop transitions, 25 changer transitions 0/227 dead transitions. [2024-06-28 01:43:38,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 227 transitions, 3222 flow [2024-06-28 01:43:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:38,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:38,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 01:43:38,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-28 01:43:38,723 INFO L175 Difference]: Start difference. First operand has 137 places, 194 transitions, 2567 flow. Second operand 9 states and 147 transitions. [2024-06-28 01:43:38,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 227 transitions, 3222 flow [2024-06-28 01:43:38,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 227 transitions, 3121 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:38,764 INFO L231 Difference]: Finished difference. Result has 142 places, 196 transitions, 2548 flow [2024-06-28 01:43:38,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2466, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2548, PETRI_PLACES=142, PETRI_TRANSITIONS=196} [2024-06-28 01:43:38,765 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2024-06-28 01:43:38,765 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 196 transitions, 2548 flow [2024-06-28 01:43:38,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:38,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:38,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:38,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:43:38,765 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:38,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:38,766 INFO L85 PathProgramCache]: Analyzing trace with hash 870566511, now seen corresponding path program 4 times [2024-06-28 01:43:38,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:38,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299781551] [2024-06-28 01:43:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:38,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:39,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:39,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299781551] [2024-06-28 01:43:39,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299781551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:39,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:39,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:39,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463313666] [2024-06-28 01:43:39,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:39,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:39,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:39,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:39,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:39,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:39,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 196 transitions, 2548 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:39,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:39,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:39,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:39,831 INFO L124 PetriNetUnfolderBase]: 1046/1842 cut-off events. [2024-06-28 01:43:39,831 INFO L125 PetriNetUnfolderBase]: For 25734/25734 co-relation queries the response was YES. [2024-06-28 01:43:39,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11221 conditions, 1842 events. 1046/1842 cut-off events. For 25734/25734 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9841 event pairs, 233 based on Foata normal form. 2/1788 useless extension candidates. Maximal degree in co-relation 11157. Up to 1332 conditions per place. [2024-06-28 01:43:39,860 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 131 selfloop transitions, 91 changer transitions 0/228 dead transitions. [2024-06-28 01:43:39,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 228 transitions, 3199 flow [2024-06-28 01:43:39,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:39,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:39,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 01:43:39,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-28 01:43:39,862 INFO L175 Difference]: Start difference. First operand has 142 places, 196 transitions, 2548 flow. Second operand 9 states and 157 transitions. [2024-06-28 01:43:39,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 228 transitions, 3199 flow [2024-06-28 01:43:39,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 228 transitions, 3106 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:39,910 INFO L231 Difference]: Finished difference. Result has 145 places, 196 transitions, 2644 flow [2024-06-28 01:43:39,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2455, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2644, PETRI_PLACES=145, PETRI_TRANSITIONS=196} [2024-06-28 01:43:39,911 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2024-06-28 01:43:39,911 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 196 transitions, 2644 flow [2024-06-28 01:43:39,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:39,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:39,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:39,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:43:39,912 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:39,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:39,912 INFO L85 PathProgramCache]: Analyzing trace with hash 839512215, now seen corresponding path program 3 times [2024-06-28 01:43:39,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:39,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550914867] [2024-06-28 01:43:39,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:39,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:40,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:40,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:40,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550914867] [2024-06-28 01:43:40,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550914867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:40,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:40,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:40,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539095757] [2024-06-28 01:43:40,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:40,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:40,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:40,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:40,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:40,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:43:40,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 196 transitions, 2644 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:43:40,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:40,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:43:40,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:41,218 INFO L124 PetriNetUnfolderBase]: 982/1771 cut-off events. [2024-06-28 01:43:41,218 INFO L125 PetriNetUnfolderBase]: For 28205/28259 co-relation queries the response was YES. [2024-06-28 01:43:41,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10977 conditions, 1771 events. 982/1771 cut-off events. For 28205/28259 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9788 event pairs, 253 based on Foata normal form. 15/1731 useless extension candidates. Maximal degree in co-relation 10912. Up to 1316 conditions per place. [2024-06-28 01:43:41,231 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 131 selfloop transitions, 71 changer transitions 0/221 dead transitions. [2024-06-28 01:43:41,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 221 transitions, 3227 flow [2024-06-28 01:43:41,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:41,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:41,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 01:43:41,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49034749034749037 [2024-06-28 01:43:41,232 INFO L175 Difference]: Start difference. First operand has 145 places, 196 transitions, 2644 flow. Second operand 7 states and 127 transitions. [2024-06-28 01:43:41,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 221 transitions, 3227 flow [2024-06-28 01:43:41,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 221 transitions, 3020 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:41,275 INFO L231 Difference]: Finished difference. Result has 145 places, 200 transitions, 2714 flow [2024-06-28 01:43:41,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2446, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2714, PETRI_PLACES=145, PETRI_TRANSITIONS=200} [2024-06-28 01:43:41,276 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2024-06-28 01:43:41,276 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 200 transitions, 2714 flow [2024-06-28 01:43:41,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 01:43:41,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:41,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:41,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:43:41,277 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:41,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:41,277 INFO L85 PathProgramCache]: Analyzing trace with hash 370012255, now seen corresponding path program 1 times [2024-06-28 01:43:41,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:41,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773611253] [2024-06-28 01:43:41,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:41,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:41,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:41,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:41,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773611253] [2024-06-28 01:43:41,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773611253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:41,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:41,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:41,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458417443] [2024-06-28 01:43:41,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:41,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:41,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:41,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:41,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:42,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:42,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 200 transitions, 2714 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:43:42,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:42,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:42,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:42,595 INFO L124 PetriNetUnfolderBase]: 1064/1863 cut-off events. [2024-06-28 01:43:42,595 INFO L125 PetriNetUnfolderBase]: For 28555/28555 co-relation queries the response was YES. [2024-06-28 01:43:42,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11533 conditions, 1863 events. 1064/1863 cut-off events. For 28555/28555 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9932 event pairs, 261 based on Foata normal form. 2/1812 useless extension candidates. Maximal degree in co-relation 11467. Up to 1499 conditions per place. [2024-06-28 01:43:42,607 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 165 selfloop transitions, 66 changer transitions 0/237 dead transitions. [2024-06-28 01:43:42,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 237 transitions, 3387 flow [2024-06-28 01:43:42,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:42,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:42,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 01:43:42,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:43:42,618 INFO L175 Difference]: Start difference. First operand has 145 places, 200 transitions, 2714 flow. Second operand 10 states and 170 transitions. [2024-06-28 01:43:42,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 237 transitions, 3387 flow [2024-06-28 01:43:42,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 237 transitions, 3279 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:42,661 INFO L231 Difference]: Finished difference. Result has 151 places, 203 transitions, 2795 flow [2024-06-28 01:43:42,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2606, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2795, PETRI_PLACES=151, PETRI_TRANSITIONS=203} [2024-06-28 01:43:42,662 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 110 predicate places. [2024-06-28 01:43:42,662 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 203 transitions, 2795 flow [2024-06-28 01:43:42,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:43:42,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:42,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:42,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:43:42,663 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:42,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:42,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1025662621, now seen corresponding path program 5 times [2024-06-28 01:43:42,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:42,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521707993] [2024-06-28 01:43:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:42,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:43,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:43,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521707993] [2024-06-28 01:43:43,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521707993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:43,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:43,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:43,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889599675] [2024-06-28 01:43:43,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:43,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:43,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:43,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:43,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:43,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:43,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 203 transitions, 2795 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:43,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:43,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:43,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:43,735 INFO L124 PetriNetUnfolderBase]: 1084/1895 cut-off events. [2024-06-28 01:43:43,736 INFO L125 PetriNetUnfolderBase]: For 28798/28798 co-relation queries the response was YES. [2024-06-28 01:43:43,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11884 conditions, 1895 events. 1084/1895 cut-off events. For 28798/28798 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10156 event pairs, 223 based on Foata normal form. 2/1844 useless extension candidates. Maximal degree in co-relation 11817. Up to 1477 conditions per place. [2024-06-28 01:43:43,750 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 150 selfloop transitions, 76 changer transitions 0/232 dead transitions. [2024-06-28 01:43:43,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 232 transitions, 3429 flow [2024-06-28 01:43:43,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:43,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:43,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 01:43:43,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-28 01:43:43,752 INFO L175 Difference]: Start difference. First operand has 151 places, 203 transitions, 2795 flow. Second operand 8 states and 138 transitions. [2024-06-28 01:43:43,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 232 transitions, 3429 flow [2024-06-28 01:43:43,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 232 transitions, 3273 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:43,800 INFO L231 Difference]: Finished difference. Result has 152 places, 206 transitions, 2873 flow [2024-06-28 01:43:43,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2639, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2873, PETRI_PLACES=152, PETRI_TRANSITIONS=206} [2024-06-28 01:43:43,801 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 111 predicate places. [2024-06-28 01:43:43,801 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 206 transitions, 2873 flow [2024-06-28 01:43:43,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:43,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:43,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:43,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:43:43,802 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:43,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:43,802 INFO L85 PathProgramCache]: Analyzing trace with hash 843357951, now seen corresponding path program 6 times [2024-06-28 01:43:43,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:43,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877314218] [2024-06-28 01:43:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:43,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:44,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:44,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877314218] [2024-06-28 01:43:44,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877314218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:44,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:44,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:44,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334857617] [2024-06-28 01:43:44,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:44,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:44,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:44,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:44,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:44,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:44,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 206 transitions, 2873 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:44,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:44,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:44,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:44,991 INFO L124 PetriNetUnfolderBase]: 1290/2202 cut-off events. [2024-06-28 01:43:44,991 INFO L125 PetriNetUnfolderBase]: For 36788/36788 co-relation queries the response was YES. [2024-06-28 01:43:45,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14800 conditions, 2202 events. 1290/2202 cut-off events. For 36788/36788 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 11967 event pairs, 252 based on Foata normal form. 2/2148 useless extension candidates. Maximal degree in co-relation 14732. Up to 1650 conditions per place. [2024-06-28 01:43:45,008 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 181 selfloop transitions, 123 changer transitions 0/310 dead transitions. [2024-06-28 01:43:45,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 310 transitions, 5042 flow [2024-06-28 01:43:45,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:45,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:45,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 01:43:45,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45645645645645644 [2024-06-28 01:43:45,009 INFO L175 Difference]: Start difference. First operand has 152 places, 206 transitions, 2873 flow. Second operand 9 states and 152 transitions. [2024-06-28 01:43:45,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 310 transitions, 5042 flow [2024-06-28 01:43:45,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 310 transitions, 4806 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:45,082 INFO L231 Difference]: Finished difference. Result has 157 places, 272 transitions, 4291 flow [2024-06-28 01:43:45,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2703, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4291, PETRI_PLACES=157, PETRI_TRANSITIONS=272} [2024-06-28 01:43:45,082 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 116 predicate places. [2024-06-28 01:43:45,083 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 272 transitions, 4291 flow [2024-06-28 01:43:45,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:45,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:45,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:45,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:43:45,083 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:45,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:45,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1772581289, now seen corresponding path program 2 times [2024-06-28 01:43:45,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:45,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026089440] [2024-06-28 01:43:45,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:45,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:45,722 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 01:43:45,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:45,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026089440] [2024-06-28 01:43:45,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026089440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:45,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:45,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:45,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295459486] [2024-06-28 01:43:45,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:45,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:45,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:45,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:45,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:45,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:45,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 272 transitions, 4291 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:45,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:45,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:45,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:46,220 INFO L124 PetriNetUnfolderBase]: 1303/2236 cut-off events. [2024-06-28 01:43:46,221 INFO L125 PetriNetUnfolderBase]: For 41606/41606 co-relation queries the response was YES. [2024-06-28 01:43:46,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15620 conditions, 2236 events. 1303/2236 cut-off events. For 41606/41606 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 12239 event pairs, 362 based on Foata normal form. 1/2183 useless extension candidates. Maximal degree in co-relation 15549. Up to 1943 conditions per place. [2024-06-28 01:43:46,240 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 263 selfloop transitions, 37 changer transitions 0/306 dead transitions. [2024-06-28 01:43:46,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 306 transitions, 5201 flow [2024-06-28 01:43:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:46,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:46,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 01:43:46,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:43:46,241 INFO L175 Difference]: Start difference. First operand has 157 places, 272 transitions, 4291 flow. Second operand 8 states and 132 transitions. [2024-06-28 01:43:46,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 306 transitions, 5201 flow [2024-06-28 01:43:46,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 306 transitions, 5131 flow, removed 34 selfloop flow, removed 1 redundant places. [2024-06-28 01:43:46,335 INFO L231 Difference]: Finished difference. Result has 164 places, 274 transitions, 4344 flow [2024-06-28 01:43:46,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4225, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4344, PETRI_PLACES=164, PETRI_TRANSITIONS=274} [2024-06-28 01:43:46,336 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2024-06-28 01:43:46,336 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 274 transitions, 4344 flow [2024-06-28 01:43:46,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:46,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:46,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:46,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:43:46,337 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:46,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:46,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1772588047, now seen corresponding path program 7 times [2024-06-28 01:43:46,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:46,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789373998] [2024-06-28 01:43:46,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:46,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:46,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:46,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:46,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789373998] [2024-06-28 01:43:46,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789373998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:46,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:46,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:46,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111185344] [2024-06-28 01:43:46,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:46,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:46,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:46,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:46,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:46,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:46,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 274 transitions, 4344 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:46,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:46,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:46,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:47,417 INFO L124 PetriNetUnfolderBase]: 1313/2244 cut-off events. [2024-06-28 01:43:47,417 INFO L125 PetriNetUnfolderBase]: For 43417/43417 co-relation queries the response was YES. [2024-06-28 01:43:47,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15903 conditions, 2244 events. 1313/2244 cut-off events. For 43417/43417 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 12271 event pairs, 243 based on Foata normal form. 2/2190 useless extension candidates. Maximal degree in co-relation 15829. Up to 1450 conditions per place. [2024-06-28 01:43:47,435 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 143 selfloop transitions, 155 changer transitions 0/304 dead transitions. [2024-06-28 01:43:47,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 304 transitions, 5201 flow [2024-06-28 01:43:47,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:47,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:47,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 01:43:47,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 01:43:47,437 INFO L175 Difference]: Start difference. First operand has 164 places, 274 transitions, 4344 flow. Second operand 8 states and 140 transitions. [2024-06-28 01:43:47,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 304 transitions, 5201 flow [2024-06-28 01:43:47,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 304 transitions, 5116 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:47,523 INFO L231 Difference]: Finished difference. Result has 166 places, 277 transitions, 4650 flow [2024-06-28 01:43:47,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4259, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4650, PETRI_PLACES=166, PETRI_TRANSITIONS=277} [2024-06-28 01:43:47,524 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-06-28 01:43:47,524 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 277 transitions, 4650 flow [2024-06-28 01:43:47,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:47,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:47,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:47,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:43:47,525 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:47,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:47,529 INFO L85 PathProgramCache]: Analyzing trace with hash 202801221, now seen corresponding path program 3 times [2024-06-28 01:43:47,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:47,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129565453] [2024-06-28 01:43:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:47,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:48,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:48,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:48,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129565453] [2024-06-28 01:43:48,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129565453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:48,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:48,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:48,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283800278] [2024-06-28 01:43:48,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:48,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:48,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:48,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:48,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:48,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:48,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 277 transitions, 4650 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:48,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:48,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:48,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:48,652 INFO L124 PetriNetUnfolderBase]: 1331/2258 cut-off events. [2024-06-28 01:43:48,653 INFO L125 PetriNetUnfolderBase]: For 47517/47517 co-relation queries the response was YES. [2024-06-28 01:43:48,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16544 conditions, 2258 events. 1331/2258 cut-off events. For 47517/47517 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12289 event pairs, 342 based on Foata normal form. 1/2211 useless extension candidates. Maximal degree in co-relation 16469. Up to 1877 conditions per place. [2024-06-28 01:43:48,669 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 274 selfloop transitions, 41 changer transitions 0/321 dead transitions. [2024-06-28 01:43:48,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 321 transitions, 5812 flow [2024-06-28 01:43:48,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:48,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:48,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 01:43:48,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-28 01:43:48,682 INFO L175 Difference]: Start difference. First operand has 166 places, 277 transitions, 4650 flow. Second operand 8 states and 138 transitions. [2024-06-28 01:43:48,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 321 transitions, 5812 flow [2024-06-28 01:43:48,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 321 transitions, 5544 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:48,778 INFO L231 Difference]: Finished difference. Result has 169 places, 283 transitions, 4585 flow [2024-06-28 01:43:48,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4390, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4585, PETRI_PLACES=169, PETRI_TRANSITIONS=283} [2024-06-28 01:43:48,778 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 128 predicate places. [2024-06-28 01:43:48,778 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 283 transitions, 4585 flow [2024-06-28 01:43:48,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:48,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:48,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:48,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:43:48,779 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:48,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:48,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1544680387, now seen corresponding path program 8 times [2024-06-28 01:43:48,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:48,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978289762] [2024-06-28 01:43:48,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:48,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:49,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:49,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:49,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978289762] [2024-06-28 01:43:49,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978289762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:49,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:49,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:49,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45425512] [2024-06-28 01:43:49,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:49,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:49,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:49,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:49,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:49,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:49,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 283 transitions, 4585 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:49,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:49,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:49,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:50,039 INFO L124 PetriNetUnfolderBase]: 1377/2355 cut-off events. [2024-06-28 01:43:50,039 INFO L125 PetriNetUnfolderBase]: For 48860/48860 co-relation queries the response was YES. [2024-06-28 01:43:50,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17010 conditions, 2355 events. 1377/2355 cut-off events. For 48860/48860 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 12994 event pairs, 263 based on Foata normal form. 2/2293 useless extension candidates. Maximal degree in co-relation 16934. Up to 1412 conditions per place. [2024-06-28 01:43:50,058 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 160 selfloop transitions, 166 changer transitions 0/332 dead transitions. [2024-06-28 01:43:50,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 332 transitions, 5928 flow [2024-06-28 01:43:50,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:50,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 01:43:50,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:43:50,060 INFO L175 Difference]: Start difference. First operand has 169 places, 283 transitions, 4585 flow. Second operand 8 states and 144 transitions. [2024-06-28 01:43:50,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 332 transitions, 5928 flow [2024-06-28 01:43:50,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 332 transitions, 5873 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:50,169 INFO L231 Difference]: Finished difference. Result has 177 places, 301 transitions, 5360 flow [2024-06-28 01:43:50,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4532, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5360, PETRI_PLACES=177, PETRI_TRANSITIONS=301} [2024-06-28 01:43:50,170 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 136 predicate places. [2024-06-28 01:43:50,170 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 301 transitions, 5360 flow [2024-06-28 01:43:50,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:50,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:50,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:50,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:43:50,170 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:50,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:50,171 INFO L85 PathProgramCache]: Analyzing trace with hash 202794463, now seen corresponding path program 9 times [2024-06-28 01:43:50,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:50,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006979509] [2024-06-28 01:43:50,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:50,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:50,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:50,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006979509] [2024-06-28 01:43:50,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006979509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:50,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:50,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:50,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086080322] [2024-06-28 01:43:50,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:50,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:50,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:50,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:50,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:50,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:50,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 301 transitions, 5360 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:50,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:50,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:50,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:51,384 INFO L124 PetriNetUnfolderBase]: 1373/2346 cut-off events. [2024-06-28 01:43:51,384 INFO L125 PetriNetUnfolderBase]: For 53761/53761 co-relation queries the response was YES. [2024-06-28 01:43:51,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18044 conditions, 2346 events. 1373/2346 cut-off events. For 53761/53761 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 12945 event pairs, 262 based on Foata normal form. 2/2285 useless extension candidates. Maximal degree in co-relation 17963. Up to 1409 conditions per place. [2024-06-28 01:43:51,404 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 156 selfloop transitions, 172 changer transitions 0/334 dead transitions. [2024-06-28 01:43:51,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 334 transitions, 6419 flow [2024-06-28 01:43:51,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:51,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 01:43:51,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-06-28 01:43:51,406 INFO L175 Difference]: Start difference. First operand has 177 places, 301 transitions, 5360 flow. Second operand 8 states and 141 transitions. [2024-06-28 01:43:51,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 334 transitions, 6419 flow [2024-06-28 01:43:51,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 334 transitions, 6140 flow, removed 112 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:51,540 INFO L231 Difference]: Finished difference. Result has 184 places, 307 transitions, 5589 flow [2024-06-28 01:43:51,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5129, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5589, PETRI_PLACES=184, PETRI_TRANSITIONS=307} [2024-06-28 01:43:51,541 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 143 predicate places. [2024-06-28 01:43:51,541 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 307 transitions, 5589 flow [2024-06-28 01:43:51,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:51,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:51,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:51,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:43:51,541 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:51,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:51,542 INFO L85 PathProgramCache]: Analyzing trace with hash 211075431, now seen corresponding path program 4 times [2024-06-28 01:43:51,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:51,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665499075] [2024-06-28 01:43:51,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:51,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:52,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:52,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:52,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665499075] [2024-06-28 01:43:52,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665499075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:52,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:52,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:52,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466306852] [2024-06-28 01:43:52,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:52,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:52,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:52,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:52,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:52,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:52,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 307 transitions, 5589 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:52,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:52,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:52,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:52,603 INFO L124 PetriNetUnfolderBase]: 1386/2356 cut-off events. [2024-06-28 01:43:52,604 INFO L125 PetriNetUnfolderBase]: For 54074/54074 co-relation queries the response was YES. [2024-06-28 01:43:52,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18267 conditions, 2356 events. 1386/2356 cut-off events. For 54074/54074 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 12950 event pairs, 344 based on Foata normal form. 1/2304 useless extension candidates. Maximal degree in co-relation 18183. Up to 1954 conditions per place. [2024-06-28 01:43:52,625 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 291 selfloop transitions, 52 changer transitions 0/349 dead transitions. [2024-06-28 01:43:52,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 349 transitions, 6829 flow [2024-06-28 01:43:52,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:52,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:52,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 01:43:52,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46283783783783783 [2024-06-28 01:43:52,628 INFO L175 Difference]: Start difference. First operand has 184 places, 307 transitions, 5589 flow. Second operand 8 states and 137 transitions. [2024-06-28 01:43:52,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 349 transitions, 6829 flow [2024-06-28 01:43:52,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 349 transitions, 6438 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:52,761 INFO L231 Difference]: Finished difference. Result has 188 places, 309 transitions, 5373 flow [2024-06-28 01:43:52,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5233, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5373, PETRI_PLACES=188, PETRI_TRANSITIONS=309} [2024-06-28 01:43:52,762 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 147 predicate places. [2024-06-28 01:43:52,762 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 309 transitions, 5373 flow [2024-06-28 01:43:52,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:52,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:52,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:52,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:43:52,763 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:52,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:52,763 INFO L85 PathProgramCache]: Analyzing trace with hash 211075183, now seen corresponding path program 10 times [2024-06-28 01:43:52,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:52,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639314477] [2024-06-28 01:43:52,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:52,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:53,312 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 01:43:53,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:53,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639314477] [2024-06-28 01:43:53,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639314477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:53,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:53,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:53,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106182267] [2024-06-28 01:43:53,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:53,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:53,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:53,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:53,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:53,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:53,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 309 transitions, 5373 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:53,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:53,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:53,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:53,871 INFO L124 PetriNetUnfolderBase]: 1382/2363 cut-off events. [2024-06-28 01:43:53,872 INFO L125 PetriNetUnfolderBase]: For 50452/50452 co-relation queries the response was YES. [2024-06-28 01:43:53,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17851 conditions, 2363 events. 1382/2363 cut-off events. For 50452/50452 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 13080 event pairs, 198 based on Foata normal form. 2/2301 useless extension candidates. Maximal degree in co-relation 17766. Up to 1426 conditions per place. [2024-06-28 01:43:53,890 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 136 selfloop transitions, 193 changer transitions 0/335 dead transitions. [2024-06-28 01:43:53,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 335 transitions, 6241 flow [2024-06-28 01:43:53,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:53,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:53,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 01:43:53,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2024-06-28 01:43:53,892 INFO L175 Difference]: Start difference. First operand has 188 places, 309 transitions, 5373 flow. Second operand 8 states and 139 transitions. [2024-06-28 01:43:53,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 335 transitions, 6241 flow [2024-06-28 01:43:54,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 335 transitions, 6097 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:54,014 INFO L231 Difference]: Finished difference. Result has 191 places, 309 transitions, 5622 flow [2024-06-28 01:43:54,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5229, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5622, PETRI_PLACES=191, PETRI_TRANSITIONS=309} [2024-06-28 01:43:54,015 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 150 predicate places. [2024-06-28 01:43:54,015 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 309 transitions, 5622 flow [2024-06-28 01:43:54,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:54,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:54,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:54,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:43:54,016 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:54,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:54,016 INFO L85 PathProgramCache]: Analyzing trace with hash 211372101, now seen corresponding path program 5 times [2024-06-28 01:43:54,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:54,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254159671] [2024-06-28 01:43:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:54,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:54,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:54,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:54,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254159671] [2024-06-28 01:43:54,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254159671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:54,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:54,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:54,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043485601] [2024-06-28 01:43:54,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:54,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:54,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:54,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:54,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:54,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:54,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 309 transitions, 5622 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:54,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:54,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:54,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:55,142 INFO L124 PetriNetUnfolderBase]: 1380/2350 cut-off events. [2024-06-28 01:43:55,142 INFO L125 PetriNetUnfolderBase]: For 53539/53539 co-relation queries the response was YES. [2024-06-28 01:43:55,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18169 conditions, 2350 events. 1380/2350 cut-off events. For 53539/53539 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 12964 event pairs, 342 based on Foata normal form. 1/2297 useless extension candidates. Maximal degree in co-relation 18083. Up to 1946 conditions per place. [2024-06-28 01:43:55,164 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 282 selfloop transitions, 59 changer transitions 0/347 dead transitions. [2024-06-28 01:43:55,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 347 transitions, 6729 flow [2024-06-28 01:43:55,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:55,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:55,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 01:43:55,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560810810810811 [2024-06-28 01:43:55,165 INFO L175 Difference]: Start difference. First operand has 191 places, 309 transitions, 5622 flow. Second operand 8 states and 135 transitions. [2024-06-28 01:43:55,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 347 transitions, 6729 flow [2024-06-28 01:43:55,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 347 transitions, 6356 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:55,301 INFO L231 Difference]: Finished difference. Result has 193 places, 309 transitions, 5396 flow [2024-06-28 01:43:55,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5273, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5396, PETRI_PLACES=193, PETRI_TRANSITIONS=309} [2024-06-28 01:43:55,302 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 152 predicate places. [2024-06-28 01:43:55,302 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 309 transitions, 5396 flow [2024-06-28 01:43:55,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:55,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:55,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:55,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:43:55,303 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:55,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:55,303 INFO L85 PathProgramCache]: Analyzing trace with hash 211383013, now seen corresponding path program 1 times [2024-06-28 01:43:55,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:55,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784907839] [2024-06-28 01:43:55,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:55,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:56,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:56,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:56,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784907839] [2024-06-28 01:43:56,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784907839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:56,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:56,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:56,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063584243] [2024-06-28 01:43:56,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:56,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:56,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:56,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:56,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:56,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:56,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 309 transitions, 5396 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:43:56,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:56,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:56,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:56,897 INFO L124 PetriNetUnfolderBase]: 1378/2368 cut-off events. [2024-06-28 01:43:56,897 INFO L125 PetriNetUnfolderBase]: For 53131/53131 co-relation queries the response was YES. [2024-06-28 01:43:56,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17788 conditions, 2368 events. 1378/2368 cut-off events. For 53131/53131 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 13153 event pairs, 448 based on Foata normal form. 1/2308 useless extension candidates. Maximal degree in co-relation 17701. Up to 2111 conditions per place. [2024-06-28 01:43:56,920 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 310 selfloop transitions, 31 changer transitions 0/347 dead transitions. [2024-06-28 01:43:56,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 347 transitions, 6391 flow [2024-06-28 01:43:56,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:56,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:56,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 01:43:56,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294294294294294 [2024-06-28 01:43:56,921 INFO L175 Difference]: Start difference. First operand has 193 places, 309 transitions, 5396 flow. Second operand 9 states and 143 transitions. [2024-06-28 01:43:56,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 347 transitions, 6391 flow [2024-06-28 01:43:57,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 347 transitions, 6284 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:57,037 INFO L231 Difference]: Finished difference. Result has 198 places, 322 transitions, 5555 flow [2024-06-28 01:43:57,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5291, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5555, PETRI_PLACES=198, PETRI_TRANSITIONS=322} [2024-06-28 01:43:57,038 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-06-28 01:43:57,038 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 322 transitions, 5555 flow [2024-06-28 01:43:57,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:43:57,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:57,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:57,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:43:57,039 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:57,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:57,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1945996847, now seen corresponding path program 1 times [2024-06-28 01:43:57,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:57,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920998085] [2024-06-28 01:43:57,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:57,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:57,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:57,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920998085] [2024-06-28 01:43:57,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920998085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:57,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:57,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:57,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479114325] [2024-06-28 01:43:57,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:57,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:57,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:57,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:57,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:57,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:43:57,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 322 transitions, 5555 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:57,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:57,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:43:57,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:58,317 INFO L124 PetriNetUnfolderBase]: 1327/2311 cut-off events. [2024-06-28 01:43:58,317 INFO L125 PetriNetUnfolderBase]: For 56598/56683 co-relation queries the response was YES. [2024-06-28 01:43:58,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17648 conditions, 2311 events. 1327/2311 cut-off events. For 56598/56683 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13237 event pairs, 265 based on Foata normal form. 29/2276 useless extension candidates. Maximal degree in co-relation 17558. Up to 1782 conditions per place. [2024-06-28 01:43:58,338 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 243 selfloop transitions, 77 changer transitions 0/359 dead transitions. [2024-06-28 01:43:58,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 359 transitions, 6399 flow [2024-06-28 01:43:58,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:58,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:58,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 01:43:58,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-28 01:43:58,339 INFO L175 Difference]: Start difference. First operand has 198 places, 322 transitions, 5555 flow. Second operand 9 states and 160 transitions. [2024-06-28 01:43:58,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 359 transitions, 6399 flow [2024-06-28 01:43:58,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 359 transitions, 5835 flow, removed 84 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:58,507 INFO L231 Difference]: Finished difference. Result has 203 places, 330 transitions, 5272 flow [2024-06-28 01:43:58,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4991, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5272, PETRI_PLACES=203, PETRI_TRANSITIONS=330} [2024-06-28 01:43:58,508 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-06-28 01:43:58,508 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 330 transitions, 5272 flow [2024-06-28 01:43:58,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:58,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:58,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:58,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:43:58,509 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:58,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:58,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1553951983, now seen corresponding path program 2 times [2024-06-28 01:43:58,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:58,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736405168] [2024-06-28 01:43:58,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:58,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:59,210 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 01:43:59,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:59,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736405168] [2024-06-28 01:43:59,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736405168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:59,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:59,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:59,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570733293] [2024-06-28 01:43:59,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:59,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:59,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:59,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:59,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:59,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:43:59,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 330 transitions, 5272 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:59,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:59,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:43:59,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:59,939 INFO L124 PetriNetUnfolderBase]: 1359/2398 cut-off events. [2024-06-28 01:43:59,939 INFO L125 PetriNetUnfolderBase]: For 56724/56793 co-relation queries the response was YES. [2024-06-28 01:43:59,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17938 conditions, 2398 events. 1359/2398 cut-off events. For 56724/56793 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13874 event pairs, 341 based on Foata normal form. 29/2360 useless extension candidates. Maximal degree in co-relation 17845. Up to 1858 conditions per place. [2024-06-28 01:43:59,965 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 246 selfloop transitions, 82 changer transitions 0/367 dead transitions. [2024-06-28 01:43:59,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 367 transitions, 6205 flow [2024-06-28 01:43:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:59,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:59,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 01:43:59,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-28 01:43:59,967 INFO L175 Difference]: Start difference. First operand has 203 places, 330 transitions, 5272 flow. Second operand 9 states and 161 transitions. [2024-06-28 01:43:59,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 367 transitions, 6205 flow [2024-06-28 01:44:00,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 367 transitions, 5981 flow, removed 69 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:00,119 INFO L231 Difference]: Finished difference. Result has 208 places, 338 transitions, 5396 flow [2024-06-28 01:44:00,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5114, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5396, PETRI_PLACES=208, PETRI_TRANSITIONS=338} [2024-06-28 01:44:00,120 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-06-28 01:44:00,120 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 338 transitions, 5396 flow [2024-06-28 01:44:00,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:00,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:00,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:00,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:44:00,121 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:00,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:00,121 INFO L85 PathProgramCache]: Analyzing trace with hash 466652118, now seen corresponding path program 1 times [2024-06-28 01:44:00,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:00,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298652903] [2024-06-28 01:44:00,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:00,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:01,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:01,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298652903] [2024-06-28 01:44:01,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298652903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:01,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:01,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:01,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193225794] [2024-06-28 01:44:01,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:01,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:01,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:01,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:01,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:01,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:01,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 338 transitions, 5396 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:01,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:01,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:01,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:01,813 INFO L124 PetriNetUnfolderBase]: 1484/2544 cut-off events. [2024-06-28 01:44:01,813 INFO L125 PetriNetUnfolderBase]: For 56839/56839 co-relation queries the response was YES. [2024-06-28 01:44:01,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18980 conditions, 2544 events. 1484/2544 cut-off events. For 56839/56839 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 14352 event pairs, 287 based on Foata normal form. 2/2486 useless extension candidates. Maximal degree in co-relation 18885. Up to 2092 conditions per place. [2024-06-28 01:44:01,838 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 275 selfloop transitions, 97 changer transitions 0/378 dead transitions. [2024-06-28 01:44:01,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 378 transitions, 6406 flow [2024-06-28 01:44:01,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:01,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:01,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 01:44:01,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-28 01:44:01,840 INFO L175 Difference]: Start difference. First operand has 208 places, 338 transitions, 5396 flow. Second operand 10 states and 169 transitions. [2024-06-28 01:44:01,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 378 transitions, 6406 flow [2024-06-28 01:44:01,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 378 transitions, 6241 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:02,000 INFO L231 Difference]: Finished difference. Result has 213 places, 344 transitions, 5526 flow [2024-06-28 01:44:02,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5231, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5526, PETRI_PLACES=213, PETRI_TRANSITIONS=344} [2024-06-28 01:44:02,001 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 172 predicate places. [2024-06-28 01:44:02,002 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 344 transitions, 5526 flow [2024-06-28 01:44:02,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:02,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:02,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:02,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:44:02,002 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:02,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:02,003 INFO L85 PathProgramCache]: Analyzing trace with hash -829919466, now seen corresponding path program 1 times [2024-06-28 01:44:02,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:02,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007963325] [2024-06-28 01:44:02,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:02,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:02,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:02,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:02,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007963325] [2024-06-28 01:44:02,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007963325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:02,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:02,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:02,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214020601] [2024-06-28 01:44:02,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:02,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:02,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:02,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:02,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:02,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:02,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 344 transitions, 5526 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:02,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:02,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:02,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:03,435 INFO L124 PetriNetUnfolderBase]: 1500/2570 cut-off events. [2024-06-28 01:44:03,435 INFO L125 PetriNetUnfolderBase]: For 59877/59877 co-relation queries the response was YES. [2024-06-28 01:44:03,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19462 conditions, 2570 events. 1500/2570 cut-off events. For 59877/59877 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 14548 event pairs, 339 based on Foata normal form. 1/2512 useless extension candidates. Maximal degree in co-relation 19366. Up to 2125 conditions per place. [2024-06-28 01:44:03,460 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 266 selfloop transitions, 107 changer transitions 0/379 dead transitions. [2024-06-28 01:44:03,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 379 transitions, 6560 flow [2024-06-28 01:44:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:03,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 01:44:03,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-28 01:44:03,462 INFO L175 Difference]: Start difference. First operand has 213 places, 344 transitions, 5526 flow. Second operand 9 states and 155 transitions. [2024-06-28 01:44:03,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 379 transitions, 6560 flow [2024-06-28 01:44:03,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 379 transitions, 6321 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:03,630 INFO L231 Difference]: Finished difference. Result has 214 places, 350 transitions, 5674 flow [2024-06-28 01:44:03,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5287, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5674, PETRI_PLACES=214, PETRI_TRANSITIONS=350} [2024-06-28 01:44:03,630 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 173 predicate places. [2024-06-28 01:44:03,630 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 350 transitions, 5674 flow [2024-06-28 01:44:03,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:03,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:03,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:03,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:44:03,631 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:03,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:03,631 INFO L85 PathProgramCache]: Analyzing trace with hash -822475901, now seen corresponding path program 3 times [2024-06-28 01:44:03,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:03,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440592707] [2024-06-28 01:44:03,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:03,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:04,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:04,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:04,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440592707] [2024-06-28 01:44:04,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440592707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:04,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:04,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:04,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932582578] [2024-06-28 01:44:04,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:04,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:04,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:04,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:04,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:04,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:44:04,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 350 transitions, 5674 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:04,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:04,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:44:04,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:05,035 INFO L124 PetriNetUnfolderBase]: 1412/2482 cut-off events. [2024-06-28 01:44:05,035 INFO L125 PetriNetUnfolderBase]: For 65232/65486 co-relation queries the response was YES. [2024-06-28 01:44:05,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18862 conditions, 2482 events. 1412/2482 cut-off events. For 65232/65486 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 14415 event pairs, 310 based on Foata normal form. 127/2540 useless extension candidates. Maximal degree in co-relation 18765. Up to 1907 conditions per place. [2024-06-28 01:44:05,112 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 247 selfloop transitions, 100 changer transitions 0/388 dead transitions. [2024-06-28 01:44:05,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 388 transitions, 6717 flow [2024-06-28 01:44:05,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:05,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:05,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 01:44:05,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-28 01:44:05,113 INFO L175 Difference]: Start difference. First operand has 214 places, 350 transitions, 5674 flow. Second operand 9 states and 161 transitions. [2024-06-28 01:44:05,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 388 transitions, 6717 flow [2024-06-28 01:44:05,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 388 transitions, 6470 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:05,251 INFO L231 Difference]: Finished difference. Result has 217 places, 358 transitions, 5883 flow [2024-06-28 01:44:05,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5433, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5883, PETRI_PLACES=217, PETRI_TRANSITIONS=358} [2024-06-28 01:44:05,252 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-06-28 01:44:05,252 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 358 transitions, 5883 flow [2024-06-28 01:44:05,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:05,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:05,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:05,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:44:05,253 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:05,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:05,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1098480345, now seen corresponding path program 4 times [2024-06-28 01:44:05,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:05,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020182398] [2024-06-28 01:44:05,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:05,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:06,073 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 01:44:06,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:06,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020182398] [2024-06-28 01:44:06,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020182398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:06,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:06,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:06,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812966447] [2024-06-28 01:44:06,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:06,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:06,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:06,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:06,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:06,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:44:06,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 358 transitions, 5883 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:06,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:06,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:44:06,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:06,879 INFO L124 PetriNetUnfolderBase]: 1476/2592 cut-off events. [2024-06-28 01:44:06,879 INFO L125 PetriNetUnfolderBase]: For 68371/68464 co-relation queries the response was YES. [2024-06-28 01:44:06,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19682 conditions, 2592 events. 1476/2592 cut-off events. For 68371/68464 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15216 event pairs, 336 based on Foata normal form. 43/2568 useless extension candidates. Maximal degree in co-relation 19583. Up to 2021 conditions per place. [2024-06-28 01:44:06,904 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 280 selfloop transitions, 83 changer transitions 0/404 dead transitions. [2024-06-28 01:44:06,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 404 transitions, 6908 flow [2024-06-28 01:44:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:06,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 01:44:06,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:44:06,906 INFO L175 Difference]: Start difference. First operand has 217 places, 358 transitions, 5883 flow. Second operand 9 states and 162 transitions. [2024-06-28 01:44:06,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 404 transitions, 6908 flow [2024-06-28 01:44:07,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 404 transitions, 6717 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:07,079 INFO L231 Difference]: Finished difference. Result has 222 places, 373 transitions, 6073 flow [2024-06-28 01:44:07,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5692, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6073, PETRI_PLACES=222, PETRI_TRANSITIONS=373} [2024-06-28 01:44:07,080 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 181 predicate places. [2024-06-28 01:44:07,080 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 373 transitions, 6073 flow [2024-06-28 01:44:07,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:07,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:07,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:07,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:44:07,081 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:07,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:07,081 INFO L85 PathProgramCache]: Analyzing trace with hash 367180963, now seen corresponding path program 5 times [2024-06-28 01:44:07,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:07,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887276907] [2024-06-28 01:44:07,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:07,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:07,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:07,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887276907] [2024-06-28 01:44:07,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887276907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:07,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:07,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:07,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919757345] [2024-06-28 01:44:07,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:07,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:07,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:07,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:07,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:08,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:44:08,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 373 transitions, 6073 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:08,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:08,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:44:08,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:08,732 INFO L124 PetriNetUnfolderBase]: 1491/2617 cut-off events. [2024-06-28 01:44:08,732 INFO L125 PetriNetUnfolderBase]: For 71006/71153 co-relation queries the response was YES. [2024-06-28 01:44:08,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19872 conditions, 2617 events. 1491/2617 cut-off events. For 71006/71153 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 15422 event pairs, 332 based on Foata normal form. 87/2631 useless extension candidates. Maximal degree in co-relation 19771. Up to 2034 conditions per place. [2024-06-28 01:44:08,760 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 274 selfloop transitions, 93 changer transitions 0/408 dead transitions. [2024-06-28 01:44:08,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 408 transitions, 7040 flow [2024-06-28 01:44:08,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:08,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:08,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 01:44:08,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:44:08,762 INFO L175 Difference]: Start difference. First operand has 222 places, 373 transitions, 6073 flow. Second operand 9 states and 162 transitions. [2024-06-28 01:44:08,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 408 transitions, 7040 flow [2024-06-28 01:44:08,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 408 transitions, 6849 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:08,945 INFO L231 Difference]: Finished difference. Result has 225 places, 377 transitions, 6159 flow [2024-06-28 01:44:08,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5882, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6159, PETRI_PLACES=225, PETRI_TRANSITIONS=377} [2024-06-28 01:44:08,946 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 184 predicate places. [2024-06-28 01:44:08,946 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 377 transitions, 6159 flow [2024-06-28 01:44:08,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:08,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:08,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:08,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:44:08,948 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:08,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:08,948 INFO L85 PathProgramCache]: Analyzing trace with hash 367181118, now seen corresponding path program 2 times [2024-06-28 01:44:08,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:08,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995187084] [2024-06-28 01:44:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:08,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:09,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:09,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995187084] [2024-06-28 01:44:09,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995187084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:09,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:09,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:09,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192899233] [2024-06-28 01:44:09,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:09,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:09,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:09,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:09,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:09,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:09,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 377 transitions, 6159 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:09,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:09,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:09,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:10,435 INFO L124 PetriNetUnfolderBase]: 1623/2768 cut-off events. [2024-06-28 01:44:10,435 INFO L125 PetriNetUnfolderBase]: For 71386/71386 co-relation queries the response was YES. [2024-06-28 01:44:10,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21133 conditions, 2768 events. 1623/2768 cut-off events. For 71386/71386 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 15870 event pairs, 366 based on Foata normal form. 1/2710 useless extension candidates. Maximal degree in co-relation 21031. Up to 2306 conditions per place. [2024-06-28 01:44:10,462 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 304 selfloop transitions, 107 changer transitions 0/417 dead transitions. [2024-06-28 01:44:10,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 417 transitions, 7349 flow [2024-06-28 01:44:10,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:10,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 01:44:10,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-28 01:44:10,464 INFO L175 Difference]: Start difference. First operand has 225 places, 377 transitions, 6159 flow. Second operand 9 states and 155 transitions. [2024-06-28 01:44:10,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 417 transitions, 7349 flow [2024-06-28 01:44:10,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 417 transitions, 7082 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:10,669 INFO L231 Difference]: Finished difference. Result has 229 places, 386 transitions, 6352 flow [2024-06-28 01:44:10,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5932, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6352, PETRI_PLACES=229, PETRI_TRANSITIONS=386} [2024-06-28 01:44:10,670 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 188 predicate places. [2024-06-28 01:44:10,670 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 386 transitions, 6352 flow [2024-06-28 01:44:10,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:10,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:10,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:10,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:44:10,671 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:10,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:10,671 INFO L85 PathProgramCache]: Analyzing trace with hash 486191203, now seen corresponding path program 6 times [2024-06-28 01:44:10,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:10,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642521255] [2024-06-28 01:44:10,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:10,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:11,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:11,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642521255] [2024-06-28 01:44:11,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642521255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:11,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:11,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:11,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647254455] [2024-06-28 01:44:11,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:11,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:11,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:11,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:11,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:11,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:44:11,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 386 transitions, 6352 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:11,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:11,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:44:11,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:12,307 INFO L124 PetriNetUnfolderBase]: 1493/2630 cut-off events. [2024-06-28 01:44:12,307 INFO L125 PetriNetUnfolderBase]: For 74803/75007 co-relation queries the response was YES. [2024-06-28 01:44:12,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20121 conditions, 2630 events. 1493/2630 cut-off events. For 74803/75007 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 15563 event pairs, 287 based on Foata normal form. 107/2676 useless extension candidates. Maximal degree in co-relation 20018. Up to 1996 conditions per place. [2024-06-28 01:44:12,333 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 254 selfloop transitions, 121 changer transitions 0/419 dead transitions. [2024-06-28 01:44:12,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 419 transitions, 7346 flow [2024-06-28 01:44:12,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:12,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 01:44:12,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:44:12,335 INFO L175 Difference]: Start difference. First operand has 229 places, 386 transitions, 6352 flow. Second operand 9 states and 162 transitions. [2024-06-28 01:44:12,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 419 transitions, 7346 flow [2024-06-28 01:44:12,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 419 transitions, 7145 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:12,526 INFO L231 Difference]: Finished difference. Result has 231 places, 388 transitions, 6469 flow [2024-06-28 01:44:12,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6151, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6469, PETRI_PLACES=231, PETRI_TRANSITIONS=388} [2024-06-28 01:44:12,527 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-06-28 01:44:12,527 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 388 transitions, 6469 flow [2024-06-28 01:44:12,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:12,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:12,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:12,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:44:12,527 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:12,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:12,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1232741197, now seen corresponding path program 2 times [2024-06-28 01:44:12,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:12,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383225294] [2024-06-28 01:44:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:12,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:13,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:13,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383225294] [2024-06-28 01:44:13,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383225294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:13,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:13,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:13,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805358034] [2024-06-28 01:44:13,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:13,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:13,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:13,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:13,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:13,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:13,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 388 transitions, 6469 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:13,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:13,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:13,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:13,924 INFO L124 PetriNetUnfolderBase]: 1698/2880 cut-off events. [2024-06-28 01:44:13,924 INFO L125 PetriNetUnfolderBase]: For 82627/82627 co-relation queries the response was YES. [2024-06-28 01:44:13,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22410 conditions, 2880 events. 1698/2880 cut-off events. For 82627/82627 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 16575 event pairs, 349 based on Foata normal form. 2/2822 useless extension candidates. Maximal degree in co-relation 22306. Up to 2012 conditions per place. [2024-06-28 01:44:13,956 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 271 selfloop transitions, 161 changer transitions 0/438 dead transitions. [2024-06-28 01:44:13,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 438 transitions, 8023 flow [2024-06-28 01:44:13,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:13,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:13,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-28 01:44:13,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-28 01:44:13,957 INFO L175 Difference]: Start difference. First operand has 231 places, 388 transitions, 6469 flow. Second operand 10 states and 177 transitions. [2024-06-28 01:44:13,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 438 transitions, 8023 flow [2024-06-28 01:44:14,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 438 transitions, 7723 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:14,187 INFO L231 Difference]: Finished difference. Result has 235 places, 400 transitions, 6896 flow [2024-06-28 01:44:14,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6169, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6896, PETRI_PLACES=235, PETRI_TRANSITIONS=400} [2024-06-28 01:44:14,187 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 194 predicate places. [2024-06-28 01:44:14,188 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 400 transitions, 6896 flow [2024-06-28 01:44:14,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:14,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:14,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:14,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:44:14,188 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:14,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:14,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1232531668, now seen corresponding path program 1 times [2024-06-28 01:44:14,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:14,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399382087] [2024-06-28 01:44:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:14,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:14,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:14,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399382087] [2024-06-28 01:44:14,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399382087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:14,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:14,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:14,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189044037] [2024-06-28 01:44:14,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:14,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:14,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:14,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:14,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:14,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:14,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 400 transitions, 6896 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:14,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:14,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:14,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:15,579 INFO L124 PetriNetUnfolderBase]: 1711/2898 cut-off events. [2024-06-28 01:44:15,579 INFO L125 PetriNetUnfolderBase]: For 86242/86242 co-relation queries the response was YES. [2024-06-28 01:44:15,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23028 conditions, 2898 events. 1711/2898 cut-off events. For 86242/86242 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 16726 event pairs, 490 based on Foata normal form. 1/2843 useless extension candidates. Maximal degree in co-relation 22922. Up to 2616 conditions per place. [2024-06-28 01:44:15,611 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 402 selfloop transitions, 33 changer transitions 0/441 dead transitions. [2024-06-28 01:44:15,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 441 transitions, 8173 flow [2024-06-28 01:44:15,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:15,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:15,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:44:15,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-28 01:44:15,612 INFO L175 Difference]: Start difference. First operand has 235 places, 400 transitions, 6896 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:44:15,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 441 transitions, 8173 flow [2024-06-28 01:44:15,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 441 transitions, 8018 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:15,864 INFO L231 Difference]: Finished difference. Result has 241 places, 402 transitions, 6859 flow [2024-06-28 01:44:15,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6743, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6859, PETRI_PLACES=241, PETRI_TRANSITIONS=402} [2024-06-28 01:44:15,865 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 200 predicate places. [2024-06-28 01:44:15,865 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 402 transitions, 6859 flow [2024-06-28 01:44:15,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:15,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:15,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:15,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:44:15,865 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:15,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:15,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1232531947, now seen corresponding path program 3 times [2024-06-28 01:44:15,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:15,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541110382] [2024-06-28 01:44:15,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:15,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:16,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:16,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541110382] [2024-06-28 01:44:16,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541110382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:16,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:16,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:16,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006677504] [2024-06-28 01:44:16,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:16,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:16,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:16,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:16,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:16,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:16,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 402 transitions, 6859 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:16,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:16,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:16,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:17,287 INFO L124 PetriNetUnfolderBase]: 1731/2934 cut-off events. [2024-06-28 01:44:17,287 INFO L125 PetriNetUnfolderBase]: For 86594/86594 co-relation queries the response was YES. [2024-06-28 01:44:17,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23300 conditions, 2934 events. 1731/2934 cut-off events. For 86594/86594 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 16983 event pairs, 291 based on Foata normal form. 2/2875 useless extension candidates. Maximal degree in co-relation 23192. Up to 2049 conditions per place. [2024-06-28 01:44:17,318 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 245 selfloop transitions, 191 changer transitions 0/442 dead transitions. [2024-06-28 01:44:17,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 442 transitions, 8123 flow [2024-06-28 01:44:17,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:17,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:17,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-28 01:44:17,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-28 01:44:17,329 INFO L175 Difference]: Start difference. First operand has 241 places, 402 transitions, 6859 flow. Second operand 10 states and 174 transitions. [2024-06-28 01:44:17,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 442 transitions, 8123 flow [2024-06-28 01:44:17,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 442 transitions, 8033 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:17,583 INFO L231 Difference]: Finished difference. Result has 244 places, 405 transitions, 7238 flow [2024-06-28 01:44:17,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6769, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7238, PETRI_PLACES=244, PETRI_TRANSITIONS=405} [2024-06-28 01:44:17,584 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 203 predicate places. [2024-06-28 01:44:17,584 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 405 transitions, 7238 flow [2024-06-28 01:44:17,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:17,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:17,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:17,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:44:17,585 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:17,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:17,585 INFO L85 PathProgramCache]: Analyzing trace with hash 486398965, now seen corresponding path program 4 times [2024-06-28 01:44:17,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:17,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116400297] [2024-06-28 01:44:17,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:17,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:18,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:18,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:18,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116400297] [2024-06-28 01:44:18,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116400297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:18,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:18,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:18,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789139479] [2024-06-28 01:44:18,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:18,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:18,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:18,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:18,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:18,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:18,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 405 transitions, 7238 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:18,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:18,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:18,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:19,047 INFO L124 PetriNetUnfolderBase]: 1727/2927 cut-off events. [2024-06-28 01:44:19,047 INFO L125 PetriNetUnfolderBase]: For 87093/87093 co-relation queries the response was YES. [2024-06-28 01:44:19,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23631 conditions, 2927 events. 1727/2927 cut-off events. For 87093/87093 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 16913 event pairs, 294 based on Foata normal form. 2/2868 useless extension candidates. Maximal degree in co-relation 23522. Up to 2046 conditions per place. [2024-06-28 01:44:19,076 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 257 selfloop transitions, 179 changer transitions 0/442 dead transitions. [2024-06-28 01:44:19,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 442 transitions, 8424 flow [2024-06-28 01:44:19,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:19,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:19,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 01:44:19,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 01:44:19,078 INFO L175 Difference]: Start difference. First operand has 244 places, 405 transitions, 7238 flow. Second operand 10 states and 175 transitions. [2024-06-28 01:44:19,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 442 transitions, 8424 flow [2024-06-28 01:44:19,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 442 transitions, 7930 flow, removed 78 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:19,343 INFO L231 Difference]: Finished difference. Result has 247 places, 405 transitions, 7109 flow [2024-06-28 01:44:19,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6744, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7109, PETRI_PLACES=247, PETRI_TRANSITIONS=405} [2024-06-28 01:44:19,344 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 206 predicate places. [2024-06-28 01:44:19,344 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 405 transitions, 7109 flow [2024-06-28 01:44:19,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:19,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:19,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:19,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:44:19,345 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:19,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:19,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1733661189, now seen corresponding path program 7 times [2024-06-28 01:44:19,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:19,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505018512] [2024-06-28 01:44:19,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:19,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:20,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:20,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505018512] [2024-06-28 01:44:20,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505018512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:20,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:20,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:20,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767135019] [2024-06-28 01:44:20,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:20,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:20,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:20,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:20,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:20,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:44:20,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 405 transitions, 7109 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:20,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:20,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:44:20,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:20,883 INFO L124 PetriNetUnfolderBase]: 1624/2793 cut-off events. [2024-06-28 01:44:20,883 INFO L125 PetriNetUnfolderBase]: For 94604/94727 co-relation queries the response was YES. [2024-06-28 01:44:20,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22911 conditions, 2793 events. 1624/2793 cut-off events. For 94604/94727 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 16607 event pairs, 288 based on Foata normal form. 41/2771 useless extension candidates. Maximal degree in co-relation 22801. Up to 2105 conditions per place. [2024-06-28 01:44:20,915 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 291 selfloop transitions, 99 changer transitions 0/434 dead transitions. [2024-06-28 01:44:20,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 434 transitions, 8093 flow [2024-06-28 01:44:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:20,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 01:44:20,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-06-28 01:44:20,916 INFO L175 Difference]: Start difference. First operand has 247 places, 405 transitions, 7109 flow. Second operand 8 states and 142 transitions. [2024-06-28 01:44:20,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 434 transitions, 8093 flow [2024-06-28 01:44:21,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 434 transitions, 7785 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:21,207 INFO L231 Difference]: Finished difference. Result has 248 places, 409 transitions, 7153 flow [2024-06-28 01:44:21,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6801, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7153, PETRI_PLACES=248, PETRI_TRANSITIONS=409} [2024-06-28 01:44:21,208 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 207 predicate places. [2024-06-28 01:44:21,208 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 409 transitions, 7153 flow [2024-06-28 01:44:21,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:21,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:21,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:21,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:44:21,209 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:21,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:21,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1733599654, now seen corresponding path program 3 times [2024-06-28 01:44:21,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:21,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864671217] [2024-06-28 01:44:21,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:21,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:21,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:21,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:21,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864671217] [2024-06-28 01:44:21,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864671217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:21,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:21,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:21,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361386487] [2024-06-28 01:44:21,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:21,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:21,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:21,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:21,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:21,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:21,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 409 transitions, 7153 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:21,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:21,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:21,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:22,700 INFO L124 PetriNetUnfolderBase]: 1743/2952 cut-off events. [2024-06-28 01:44:22,700 INFO L125 PetriNetUnfolderBase]: For 89071/89071 co-relation queries the response was YES. [2024-06-28 01:44:22,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23680 conditions, 2952 events. 1743/2952 cut-off events. For 89071/89071 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 17155 event pairs, 350 based on Foata normal form. 1/2897 useless extension candidates. Maximal degree in co-relation 23568. Up to 2328 conditions per place. [2024-06-28 01:44:22,733 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 283 selfloop transitions, 152 changer transitions 0/441 dead transitions. [2024-06-28 01:44:22,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 441 transitions, 8305 flow [2024-06-28 01:44:22,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:22,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:22,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 01:44:22,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46283783783783783 [2024-06-28 01:44:22,735 INFO L175 Difference]: Start difference. First operand has 248 places, 409 transitions, 7153 flow. Second operand 8 states and 137 transitions. [2024-06-28 01:44:22,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 441 transitions, 8305 flow [2024-06-28 01:44:23,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 441 transitions, 8059 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:23,049 INFO L231 Difference]: Finished difference. Result has 251 places, 415 transitions, 7422 flow [2024-06-28 01:44:23,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6919, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7422, PETRI_PLACES=251, PETRI_TRANSITIONS=415} [2024-06-28 01:44:23,050 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 210 predicate places. [2024-06-28 01:44:23,050 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 415 transitions, 7422 flow [2024-06-28 01:44:23,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:23,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:23,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:23,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:44:23,051 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:23,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:23,051 INFO L85 PathProgramCache]: Analyzing trace with hash 257757555, now seen corresponding path program 8 times [2024-06-28 01:44:23,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:23,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100975623] [2024-06-28 01:44:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:23,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:23,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:23,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100975623] [2024-06-28 01:44:23,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100975623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:23,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:23,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:23,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298123335] [2024-06-28 01:44:23,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:23,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:23,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:23,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:23,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:23,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:44:23,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 415 transitions, 7422 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:23,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:23,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:44:23,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:24,624 INFO L124 PetriNetUnfolderBase]: 1626/2820 cut-off events. [2024-06-28 01:44:24,624 INFO L125 PetriNetUnfolderBase]: For 100565/100860 co-relation queries the response was YES. [2024-06-28 01:44:24,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23018 conditions, 2820 events. 1626/2820 cut-off events. For 100565/100860 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 16771 event pairs, 307 based on Foata normal form. 153/2898 useless extension candidates. Maximal degree in co-relation 22905. Up to 2119 conditions per place. [2024-06-28 01:44:24,657 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 278 selfloop transitions, 118 changer transitions 0/443 dead transitions. [2024-06-28 01:44:24,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 443 transitions, 8428 flow [2024-06-28 01:44:24,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 01:44:24,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-28 01:44:24,662 INFO L175 Difference]: Start difference. First operand has 251 places, 415 transitions, 7422 flow. Second operand 8 states and 143 transitions. [2024-06-28 01:44:24,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 443 transitions, 8428 flow [2024-06-28 01:44:24,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 443 transitions, 8137 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:24,950 INFO L231 Difference]: Finished difference. Result has 253 places, 417 transitions, 7472 flow [2024-06-28 01:44:24,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7131, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7472, PETRI_PLACES=253, PETRI_TRANSITIONS=417} [2024-06-28 01:44:24,951 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 212 predicate places. [2024-06-28 01:44:24,951 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 417 transitions, 7472 flow [2024-06-28 01:44:24,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:24,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:24,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:24,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:44:24,952 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:24,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:24,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1466195224, now seen corresponding path program 2 times [2024-06-28 01:44:24,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:24,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077247745] [2024-06-28 01:44:24,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:24,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:25,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:25,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077247745] [2024-06-28 01:44:25,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077247745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:25,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:25,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:25,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949531706] [2024-06-28 01:44:25,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:25,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:25,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:25,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:25,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:25,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:25,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 417 transitions, 7472 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:25,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:25,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:25,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:26,556 INFO L124 PetriNetUnfolderBase]: 1770/2988 cut-off events. [2024-06-28 01:44:26,556 INFO L125 PetriNetUnfolderBase]: For 91810/91810 co-relation queries the response was YES. [2024-06-28 01:44:26,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24251 conditions, 2988 events. 1770/2988 cut-off events. For 91810/91810 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 17333 event pairs, 385 based on Foata normal form. 1/2933 useless extension candidates. Maximal degree in co-relation 24137. Up to 2475 conditions per place. [2024-06-28 01:44:26,591 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 334 selfloop transitions, 116 changer transitions 0/456 dead transitions. [2024-06-28 01:44:26,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 456 transitions, 8656 flow [2024-06-28 01:44:26,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:26,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:26,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 01:44:26,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-28 01:44:26,593 INFO L175 Difference]: Start difference. First operand has 253 places, 417 transitions, 7472 flow. Second operand 10 states and 171 transitions. [2024-06-28 01:44:26,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 456 transitions, 8656 flow [2024-06-28 01:44:26,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 456 transitions, 8379 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:26,959 INFO L231 Difference]: Finished difference. Result has 257 places, 420 transitions, 7529 flow [2024-06-28 01:44:26,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7195, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7529, PETRI_PLACES=257, PETRI_TRANSITIONS=420} [2024-06-28 01:44:26,959 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-28 01:44:26,959 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 420 transitions, 7529 flow [2024-06-28 01:44:26,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:26,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:26,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:26,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:44:26,960 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:26,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:26,961 INFO L85 PathProgramCache]: Analyzing trace with hash 257907657, now seen corresponding path program 5 times [2024-06-28 01:44:26,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:26,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463671227] [2024-06-28 01:44:26,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:26,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:27,529 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 01:44:27,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:27,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463671227] [2024-06-28 01:44:27,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463671227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:27,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:27,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:27,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278348785] [2024-06-28 01:44:27,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:27,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:27,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:27,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:27,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:27,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:27,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 420 transitions, 7529 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:27,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:27,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:27,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:28,397 INFO L124 PetriNetUnfolderBase]: 1814/3054 cut-off events. [2024-06-28 01:44:28,397 INFO L125 PetriNetUnfolderBase]: For 93659/93659 co-relation queries the response was YES. [2024-06-28 01:44:28,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24691 conditions, 3054 events. 1814/3054 cut-off events. For 93659/93659 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 17805 event pairs, 341 based on Foata normal form. 2/2996 useless extension candidates. Maximal degree in co-relation 24576. Up to 2604 conditions per place. [2024-06-28 01:44:28,426 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 361 selfloop transitions, 100 changer transitions 0/467 dead transitions. [2024-06-28 01:44:28,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 467 transitions, 8913 flow [2024-06-28 01:44:28,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:28,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:28,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:44:28,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:44:28,428 INFO L175 Difference]: Start difference. First operand has 257 places, 420 transitions, 7529 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:44:28,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 467 transitions, 8913 flow [2024-06-28 01:44:28,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 467 transitions, 8617 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 01:44:28,769 INFO L231 Difference]: Finished difference. Result has 260 places, 436 transitions, 7804 flow [2024-06-28 01:44:28,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7242, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7804, PETRI_PLACES=260, PETRI_TRANSITIONS=436} [2024-06-28 01:44:28,770 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-28 01:44:28,770 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 436 transitions, 7804 flow [2024-06-28 01:44:28,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:28,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:28,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:28,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:44:28,771 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:28,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:28,771 INFO L85 PathProgramCache]: Analyzing trace with hash 374086605, now seen corresponding path program 9 times [2024-06-28 01:44:28,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:28,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61661187] [2024-06-28 01:44:28,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:28,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:29,682 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 01:44:29,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:29,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61661187] [2024-06-28 01:44:29,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61661187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:29,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:29,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:29,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002677948] [2024-06-28 01:44:29,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:29,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:29,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:29,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:29,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:29,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:44:29,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 436 transitions, 7804 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:29,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:29,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:44:29,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:30,521 INFO L124 PetriNetUnfolderBase]: 1671/2886 cut-off events. [2024-06-28 01:44:30,521 INFO L125 PetriNetUnfolderBase]: For 103782/104053 co-relation queries the response was YES. [2024-06-28 01:44:30,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23952 conditions, 2886 events. 1671/2886 cut-off events. For 103782/104053 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 17221 event pairs, 275 based on Foata normal form. 108/2905 useless extension candidates. Maximal degree in co-relation 23834. Up to 2295 conditions per place. [2024-06-28 01:44:30,554 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 319 selfloop transitions, 104 changer transitions 0/470 dead transitions. [2024-06-28 01:44:30,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 470 transitions, 8953 flow [2024-06-28 01:44:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:30,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:30,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 01:44:30,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-28 01:44:30,558 INFO L175 Difference]: Start difference. First operand has 260 places, 436 transitions, 7804 flow. Second operand 9 states and 157 transitions. [2024-06-28 01:44:30,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 470 transitions, 8953 flow [2024-06-28 01:44:30,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 470 transitions, 8697 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:30,899 INFO L231 Difference]: Finished difference. Result has 263 places, 442 transitions, 7948 flow [2024-06-28 01:44:30,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7548, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7948, PETRI_PLACES=263, PETRI_TRANSITIONS=442} [2024-06-28 01:44:30,900 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 222 predicate places. [2024-06-28 01:44:30,900 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 442 transitions, 7948 flow [2024-06-28 01:44:30,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:30,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:30,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:30,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:44:30,901 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:30,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:30,901 INFO L85 PathProgramCache]: Analyzing trace with hash -842464720, now seen corresponding path program 3 times [2024-06-28 01:44:30,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:30,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568738303] [2024-06-28 01:44:30,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:30,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:31,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:31,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568738303] [2024-06-28 01:44:31,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568738303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:31,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:31,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:31,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157965423] [2024-06-28 01:44:31,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:31,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:31,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:31,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:31,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:31,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:31,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 442 transitions, 7948 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:31,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:31,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:31,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:32,803 INFO L124 PetriNetUnfolderBase]: 1958/3274 cut-off events. [2024-06-28 01:44:32,804 INFO L125 PetriNetUnfolderBase]: For 110416/110416 co-relation queries the response was YES. [2024-06-28 01:44:32,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26984 conditions, 3274 events. 1958/3274 cut-off events. For 110416/110416 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 19254 event pairs, 377 based on Foata normal form. 2/3216 useless extension candidates. Maximal degree in co-relation 26864. Up to 2510 conditions per place. [2024-06-28 01:44:32,843 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 343 selfloop transitions, 158 changer transitions 0/507 dead transitions. [2024-06-28 01:44:32,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 507 transitions, 9950 flow [2024-06-28 01:44:32,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:32,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 01:44:32,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-28 01:44:32,844 INFO L175 Difference]: Start difference. First operand has 263 places, 442 transitions, 7948 flow. Second operand 10 states and 172 transitions. [2024-06-28 01:44:32,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 507 transitions, 9950 flow [2024-06-28 01:44:33,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 507 transitions, 9583 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:33,263 INFO L231 Difference]: Finished difference. Result has 267 places, 472 transitions, 8642 flow [2024-06-28 01:44:33,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7581, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8642, PETRI_PLACES=267, PETRI_TRANSITIONS=472} [2024-06-28 01:44:33,264 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 226 predicate places. [2024-06-28 01:44:33,264 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 472 transitions, 8642 flow [2024-06-28 01:44:33,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:33,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:33,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:33,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:44:33,265 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:33,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:33,265 INFO L85 PathProgramCache]: Analyzing trace with hash 884548863, now seen corresponding path program 6 times [2024-06-28 01:44:33,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:33,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147239637] [2024-06-28 01:44:33,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:33,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:33,923 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 01:44:33,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:33,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147239637] [2024-06-28 01:44:33,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147239637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:33,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:33,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:33,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585136996] [2024-06-28 01:44:33,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:33,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:33,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:33,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:33,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:33,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:33,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 472 transitions, 8642 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:33,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:33,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:33,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:34,892 INFO L124 PetriNetUnfolderBase]: 1978/3310 cut-off events. [2024-06-28 01:44:34,892 INFO L125 PetriNetUnfolderBase]: For 112395/112395 co-relation queries the response was YES. [2024-06-28 01:44:34,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27833 conditions, 3310 events. 1978/3310 cut-off events. For 112395/112395 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 19521 event pairs, 252 based on Foata normal form. 2/3253 useless extension candidates. Maximal degree in co-relation 27710. Up to 2123 conditions per place. [2024-06-28 01:44:34,933 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 258 selfloop transitions, 244 changer transitions 0/508 dead transitions. [2024-06-28 01:44:34,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 508 transitions, 10157 flow [2024-06-28 01:44:34,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:34,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:34,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 01:44:34,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-28 01:44:34,935 INFO L175 Difference]: Start difference. First operand has 267 places, 472 transitions, 8642 flow. Second operand 9 states and 158 transitions. [2024-06-28 01:44:34,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 508 transitions, 10157 flow [2024-06-28 01:44:35,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 508 transitions, 9969 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:35,482 INFO L231 Difference]: Finished difference. Result has 271 places, 475 transitions, 9061 flow [2024-06-28 01:44:35,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8460, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9061, PETRI_PLACES=271, PETRI_TRANSITIONS=475} [2024-06-28 01:44:35,483 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-06-28 01:44:35,483 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 475 transitions, 9061 flow [2024-06-28 01:44:35,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:35,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:35,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:35,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:44:35,484 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:35,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:35,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1614374088, now seen corresponding path program 2 times [2024-06-28 01:44:35,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:35,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578092908] [2024-06-28 01:44:35,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:35,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:36,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:36,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:36,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578092908] [2024-06-28 01:44:36,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578092908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:36,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:36,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:36,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543909454] [2024-06-28 01:44:36,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:36,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:36,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:36,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:36,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:36,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:36,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 475 transitions, 9061 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:36,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:36,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:36,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:37,129 INFO L124 PetriNetUnfolderBase]: 1991/3328 cut-off events. [2024-06-28 01:44:37,129 INFO L125 PetriNetUnfolderBase]: For 117362/117362 co-relation queries the response was YES. [2024-06-28 01:44:37,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28701 conditions, 3328 events. 1991/3328 cut-off events. For 117362/117362 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 19586 event pairs, 520 based on Foata normal form. 1/3273 useless extension candidates. Maximal degree in co-relation 28576. Up to 2991 conditions per place. [2024-06-28 01:44:37,174 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 462 selfloop transitions, 49 changer transitions 0/517 dead transitions. [2024-06-28 01:44:37,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 517 transitions, 10653 flow [2024-06-28 01:44:37,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:37,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:37,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 01:44:37,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:44:37,175 INFO L175 Difference]: Start difference. First operand has 271 places, 475 transitions, 9061 flow. Second operand 9 states and 148 transitions. [2024-06-28 01:44:37,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 517 transitions, 10653 flow [2024-06-28 01:44:37,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 517 transitions, 10205 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:37,729 INFO L231 Difference]: Finished difference. Result has 274 places, 477 transitions, 8786 flow [2024-06-28 01:44:37,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8629, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8786, PETRI_PLACES=274, PETRI_TRANSITIONS=477} [2024-06-28 01:44:37,730 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 233 predicate places. [2024-06-28 01:44:37,730 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 477 transitions, 8786 flow [2024-06-28 01:44:37,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:37,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:37,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:37,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:44:37,730 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:37,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:37,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1614374367, now seen corresponding path program 7 times [2024-06-28 01:44:37,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:37,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034251386] [2024-06-28 01:44:37,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:37,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:38,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:38,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034251386] [2024-06-28 01:44:38,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034251386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:38,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:38,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:38,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864247626] [2024-06-28 01:44:38,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:38,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:38,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:38,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:38,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:38,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:38,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 477 transitions, 8786 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:38,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:38,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:38,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:39,266 INFO L124 PetriNetUnfolderBase]: 1987/3333 cut-off events. [2024-06-28 01:44:39,266 INFO L125 PetriNetUnfolderBase]: For 110749/110749 co-relation queries the response was YES. [2024-06-28 01:44:39,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27979 conditions, 3333 events. 1987/3333 cut-off events. For 110749/110749 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 19775 event pairs, 249 based on Foata normal form. 2/3273 useless extension candidates. Maximal degree in co-relation 27854. Up to 2140 conditions per place. [2024-06-28 01:44:39,304 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 242 selfloop transitions, 261 changer transitions 0/509 dead transitions. [2024-06-28 01:44:39,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 509 transitions, 10096 flow [2024-06-28 01:44:39,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:39,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:39,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:44:39,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-28 01:44:39,306 INFO L175 Difference]: Start difference. First operand has 274 places, 477 transitions, 8786 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:44:39,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 509 transitions, 10096 flow [2024-06-28 01:44:39,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 509 transitions, 9903 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:39,766 INFO L231 Difference]: Finished difference. Result has 276 places, 477 transitions, 9132 flow [2024-06-28 01:44:39,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8593, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9132, PETRI_PLACES=276, PETRI_TRANSITIONS=477} [2024-06-28 01:44:39,767 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 235 predicate places. [2024-06-28 01:44:39,767 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 477 transitions, 9132 flow [2024-06-28 01:44:39,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:39,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:39,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:39,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:44:39,768 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:39,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:39,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1991864529, now seen corresponding path program 8 times [2024-06-28 01:44:39,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:39,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834455006] [2024-06-28 01:44:39,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:39,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:40,404 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 01:44:40,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:40,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834455006] [2024-06-28 01:44:40,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834455006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:40,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:40,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:40,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345884344] [2024-06-28 01:44:40,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:40,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:40,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:40,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:40,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:40,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:40,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 477 transitions, 9132 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:40,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:40,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:40,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:41,355 INFO L124 PetriNetUnfolderBase]: 2057/3435 cut-off events. [2024-06-28 01:44:41,356 INFO L125 PetriNetUnfolderBase]: For 126495/126495 co-relation queries the response was YES. [2024-06-28 01:44:41,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29843 conditions, 3435 events. 2057/3435 cut-off events. For 126495/126495 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 20347 event pairs, 380 based on Foata normal form. 2/3373 useless extension candidates. Maximal degree in co-relation 29717. Up to 1968 conditions per place. [2024-06-28 01:44:41,400 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 279 selfloop transitions, 247 changer transitions 0/532 dead transitions. [2024-06-28 01:44:41,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 532 transitions, 11358 flow [2024-06-28 01:44:41,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:41,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:41,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 01:44:41,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-28 01:44:41,410 INFO L175 Difference]: Start difference. First operand has 276 places, 477 transitions, 9132 flow. Second operand 9 states and 165 transitions. [2024-06-28 01:44:41,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 532 transitions, 11358 flow [2024-06-28 01:44:41,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 532 transitions, 10873 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:41,879 INFO L231 Difference]: Finished difference. Result has 279 places, 494 transitions, 9682 flow [2024-06-28 01:44:41,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8655, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9682, PETRI_PLACES=279, PETRI_TRANSITIONS=494} [2024-06-28 01:44:41,882 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2024-06-28 01:44:41,882 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 494 transitions, 9682 flow [2024-06-28 01:44:41,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:41,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:41,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:41,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:44:41,883 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:41,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:41,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1991871969, now seen corresponding path program 9 times [2024-06-28 01:44:41,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:41,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005056934] [2024-06-28 01:44:41,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:41,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:42,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:42,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:42,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005056934] [2024-06-28 01:44:42,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005056934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:42,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:42,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:42,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639657633] [2024-06-28 01:44:42,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:42,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:42,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:42,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:42,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:42,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:42,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 494 transitions, 9682 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:42,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:42,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:42,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:43,464 INFO L124 PetriNetUnfolderBase]: 2053/3433 cut-off events. [2024-06-28 01:44:43,465 INFO L125 PetriNetUnfolderBase]: For 127908/127908 co-relation queries the response was YES. [2024-06-28 01:44:43,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29960 conditions, 3433 events. 2053/3433 cut-off events. For 127908/127908 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 20375 event pairs, 373 based on Foata normal form. 2/3369 useless extension candidates. Maximal degree in co-relation 29832. Up to 1965 conditions per place. [2024-06-28 01:44:43,505 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 277 selfloop transitions, 248 changer transitions 0/531 dead transitions. [2024-06-28 01:44:43,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 531 transitions, 11323 flow [2024-06-28 01:44:43,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:43,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:43,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 01:44:43,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-28 01:44:43,507 INFO L175 Difference]: Start difference. First operand has 279 places, 494 transitions, 9682 flow. Second operand 9 states and 163 transitions. [2024-06-28 01:44:43,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 531 transitions, 11323 flow [2024-06-28 01:44:43,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 531 transitions, 10702 flow, removed 128 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:44,005 INFO L231 Difference]: Finished difference. Result has 284 places, 494 transitions, 9564 flow [2024-06-28 01:44:44,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9061, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9564, PETRI_PLACES=284, PETRI_TRANSITIONS=494} [2024-06-28 01:44:44,006 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 243 predicate places. [2024-06-28 01:44:44,020 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 494 transitions, 9564 flow [2024-06-28 01:44:44,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:44,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:44,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:44,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:44:44,021 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:44,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:44,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2037397768, now seen corresponding path program 3 times [2024-06-28 01:44:44,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:44,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091180487] [2024-06-28 01:44:44,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:44,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:44,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:44,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091180487] [2024-06-28 01:44:44,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091180487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:44,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:44,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:44,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36471359] [2024-06-28 01:44:44,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:44,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:44,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:44,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:44,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:44,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:44,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 494 transitions, 9564 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:44,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:44,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:44,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:45,738 INFO L124 PetriNetUnfolderBase]: 2086/3494 cut-off events. [2024-06-28 01:44:45,739 INFO L125 PetriNetUnfolderBase]: For 128355/128355 co-relation queries the response was YES. [2024-06-28 01:44:45,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30344 conditions, 3494 events. 2086/3494 cut-off events. For 128355/128355 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 20888 event pairs, 475 based on Foata normal form. 1/3430 useless extension candidates. Maximal degree in co-relation 30215. Up to 2960 conditions per place. [2024-06-28 01:44:45,785 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 472 selfloop transitions, 76 changer transitions 0/554 dead transitions. [2024-06-28 01:44:45,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 554 transitions, 11890 flow [2024-06-28 01:44:45,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:45,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:45,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 01:44:45,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-28 01:44:45,787 INFO L175 Difference]: Start difference. First operand has 284 places, 494 transitions, 9564 flow. Second operand 9 states and 155 transitions. [2024-06-28 01:44:45,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 554 transitions, 11890 flow [2024-06-28 01:44:46,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 554 transitions, 11375 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:46,342 INFO L231 Difference]: Finished difference. Result has 287 places, 500 transitions, 9394 flow [2024-06-28 01:44:46,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9082, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9394, PETRI_PLACES=287, PETRI_TRANSITIONS=500} [2024-06-28 01:44:46,342 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 246 predicate places. [2024-06-28 01:44:46,342 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 500 transitions, 9394 flow [2024-06-28 01:44:46,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:46,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:46,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:46,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:44:46,343 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:46,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:46,343 INFO L85 PathProgramCache]: Analyzing trace with hash 567646850, now seen corresponding path program 4 times [2024-06-28 01:44:46,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:46,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816788069] [2024-06-28 01:44:46,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:46,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:46,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:46,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816788069] [2024-06-28 01:44:46,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816788069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:46,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:46,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:46,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579004073] [2024-06-28 01:44:46,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:46,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:46,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:46,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:46,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:47,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:47,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 500 transitions, 9394 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:47,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:47,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:47,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:47,998 INFO L124 PetriNetUnfolderBase]: 2099/3520 cut-off events. [2024-06-28 01:44:47,998 INFO L125 PetriNetUnfolderBase]: For 129370/129370 co-relation queries the response was YES. [2024-06-28 01:44:48,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30178 conditions, 3520 events. 2099/3520 cut-off events. For 129370/129370 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 21051 event pairs, 489 based on Foata normal form. 1/3454 useless extension candidates. Maximal degree in co-relation 30048. Up to 2974 conditions per place. [2024-06-28 01:44:48,039 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 482 selfloop transitions, 66 changer transitions 0/554 dead transitions. [2024-06-28 01:44:48,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 554 transitions, 11435 flow [2024-06-28 01:44:48,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:48,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:48,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:44:48,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-28 01:44:48,041 INFO L175 Difference]: Start difference. First operand has 287 places, 500 transitions, 9394 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:44:48,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 554 transitions, 11435 flow [2024-06-28 01:44:48,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 554 transitions, 11270 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:48,550 INFO L231 Difference]: Finished difference. Result has 292 places, 502 transitions, 9421 flow [2024-06-28 01:44:48,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9245, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9421, PETRI_PLACES=292, PETRI_TRANSITIONS=502} [2024-06-28 01:44:48,550 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 251 predicate places. [2024-06-28 01:44:48,550 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 502 transitions, 9421 flow [2024-06-28 01:44:48,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:48,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:48,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:48,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:44:48,551 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:48,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:48,551 INFO L85 PathProgramCache]: Analyzing trace with hash 567431369, now seen corresponding path program 10 times [2024-06-28 01:44:48,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:48,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913078689] [2024-06-28 01:44:48,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:48,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:49,427 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 01:44:49,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:49,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913078689] [2024-06-28 01:44:49,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913078689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:49,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:49,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:49,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221252591] [2024-06-28 01:44:49,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:49,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:49,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:49,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:49,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:49,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:44:49,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 502 transitions, 9421 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:49,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:49,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:44:49,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:50,461 INFO L124 PetriNetUnfolderBase]: 1877/3252 cut-off events. [2024-06-28 01:44:50,461 INFO L125 PetriNetUnfolderBase]: For 123421/123441 co-relation queries the response was YES. [2024-06-28 01:44:50,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28602 conditions, 3252 events. 1877/3252 cut-off events. For 123421/123441 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 20203 event pairs, 200 based on Foata normal form. 2/3166 useless extension candidates. Maximal degree in co-relation 28470. Up to 2472 conditions per place. [2024-06-28 01:44:50,496 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 347 selfloop transitions, 135 changer transitions 0/529 dead transitions. [2024-06-28 01:44:50,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 529 transitions, 10639 flow [2024-06-28 01:44:50,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:50,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 01:44:50,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-06-28 01:44:50,498 INFO L175 Difference]: Start difference. First operand has 292 places, 502 transitions, 9421 flow. Second operand 8 states and 142 transitions. [2024-06-28 01:44:50,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 529 transitions, 10639 flow [2024-06-28 01:44:50,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 529 transitions, 10495 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:50,975 INFO L231 Difference]: Finished difference. Result has 294 places, 504 transitions, 9642 flow [2024-06-28 01:44:50,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9277, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9642, PETRI_PLACES=294, PETRI_TRANSITIONS=504} [2024-06-28 01:44:50,976 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 253 predicate places. [2024-06-28 01:44:50,976 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 504 transitions, 9642 flow [2024-06-28 01:44:50,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:50,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:50,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:50,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:44:50,977 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:50,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:50,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1991662719, now seen corresponding path program 10 times [2024-06-28 01:44:50,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:50,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154113129] [2024-06-28 01:44:50,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:50,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:51,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:51,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:51,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154113129] [2024-06-28 01:44:51,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154113129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:51,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:51,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:51,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008664524] [2024-06-28 01:44:51,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:51,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:51,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:51,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:51,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:51,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:51,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 504 transitions, 9642 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:51,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:51,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:51,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:52,614 INFO L124 PetriNetUnfolderBase]: 2095/3507 cut-off events. [2024-06-28 01:44:52,614 INFO L125 PetriNetUnfolderBase]: For 125535/125535 co-relation queries the response was YES. [2024-06-28 01:44:52,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29982 conditions, 3507 events. 2095/3507 cut-off events. For 125535/125535 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 20892 event pairs, 383 based on Foata normal form. 2/3440 useless extension candidates. Maximal degree in co-relation 29849. Up to 2033 conditions per place. [2024-06-28 01:44:52,662 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 281 selfloop transitions, 256 changer transitions 0/543 dead transitions. [2024-06-28 01:44:52,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 543 transitions, 11341 flow [2024-06-28 01:44:52,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:52,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:52,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 01:44:52,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-28 01:44:52,663 INFO L175 Difference]: Start difference. First operand has 294 places, 504 transitions, 9642 flow. Second operand 9 states and 160 transitions. [2024-06-28 01:44:52,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 543 transitions, 11341 flow [2024-06-28 01:44:53,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 543 transitions, 10862 flow, removed 106 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:53,338 INFO L231 Difference]: Finished difference. Result has 298 places, 511 transitions, 9897 flow [2024-06-28 01:44:53,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9209, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9897, PETRI_PLACES=298, PETRI_TRANSITIONS=511} [2024-06-28 01:44:53,339 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 257 predicate places. [2024-06-28 01:44:53,339 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 511 transitions, 9897 flow [2024-06-28 01:44:53,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:53,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:53,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:53,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:44:53,339 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:53,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:53,340 INFO L85 PathProgramCache]: Analyzing trace with hash -2046602257, now seen corresponding path program 11 times [2024-06-28 01:44:53,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:53,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607482104] [2024-06-28 01:44:53,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:53,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:54,065 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 01:44:54,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:54,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607482104] [2024-06-28 01:44:54,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607482104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:54,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:54,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:54,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828214759] [2024-06-28 01:44:54,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:54,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:54,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:54,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:54,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:54,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:54,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 511 transitions, 9897 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:54,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:54,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:54,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:55,011 INFO L124 PetriNetUnfolderBase]: 2115/3540 cut-off events. [2024-06-28 01:44:55,011 INFO L125 PetriNetUnfolderBase]: For 126194/126194 co-relation queries the response was YES. [2024-06-28 01:44:55,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30485 conditions, 3540 events. 2115/3540 cut-off events. For 126194/126194 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 21191 event pairs, 233 based on Foata normal form. 2/3472 useless extension candidates. Maximal degree in co-relation 30350. Up to 2050 conditions per place. [2024-06-28 01:44:55,058 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 261 selfloop transitions, 279 changer transitions 0/546 dead transitions. [2024-06-28 01:44:55,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 546 transitions, 11523 flow [2024-06-28 01:44:55,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:55,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:55,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:44:55,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-28 01:44:55,063 INFO L175 Difference]: Start difference. First operand has 298 places, 511 transitions, 9897 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:44:55,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 546 transitions, 11523 flow [2024-06-28 01:44:55,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 546 transitions, 10984 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:55,760 INFO L231 Difference]: Finished difference. Result has 302 places, 514 transitions, 10022 flow [2024-06-28 01:44:55,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9363, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10022, PETRI_PLACES=302, PETRI_TRANSITIONS=514} [2024-06-28 01:44:55,761 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2024-06-28 01:44:55,761 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 514 transitions, 10022 flow [2024-06-28 01:44:55,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:55,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:55,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:55,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:44:55,762 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:55,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:55,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2037071338, now seen corresponding path program 5 times [2024-06-28 01:44:55,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:55,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312775670] [2024-06-28 01:44:55,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:55,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:56,611 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 01:44:56,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:56,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312775670] [2024-06-28 01:44:56,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312775670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:56,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:56,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:56,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081422414] [2024-06-28 01:44:56,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:56,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:56,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:56,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:56,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:56,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:56,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 514 transitions, 10022 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:56,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:56,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:56,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:57,650 INFO L124 PetriNetUnfolderBase]: 2113/3542 cut-off events. [2024-06-28 01:44:57,651 INFO L125 PetriNetUnfolderBase]: For 129507/129507 co-relation queries the response was YES. [2024-06-28 01:44:57,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30518 conditions, 3542 events. 2113/3542 cut-off events. For 129507/129507 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21166 event pairs, 670 based on Foata normal form. 1/3478 useless extension candidates. Maximal degree in co-relation 30382. Up to 3250 conditions per place. [2024-06-28 01:44:57,695 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 519 selfloop transitions, 24 changer transitions 0/549 dead transitions. [2024-06-28 01:44:57,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 549 transitions, 11383 flow [2024-06-28 01:44:57,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:57,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:57,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 01:44:57,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-28 01:44:57,696 INFO L175 Difference]: Start difference. First operand has 302 places, 514 transitions, 10022 flow. Second operand 9 states and 147 transitions. [2024-06-28 01:44:57,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 549 transitions, 11383 flow [2024-06-28 01:44:58,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 549 transitions, 10658 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:58,254 INFO L231 Difference]: Finished difference. Result has 303 places, 514 transitions, 9357 flow [2024-06-28 01:44:58,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9303, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9357, PETRI_PLACES=303, PETRI_TRANSITIONS=514} [2024-06-28 01:44:58,254 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 262 predicate places. [2024-06-28 01:44:58,254 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 514 transitions, 9357 flow [2024-06-28 01:44:58,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:58,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:58,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:58,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:44:58,255 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:58,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:58,255 INFO L85 PathProgramCache]: Analyzing trace with hash -374745359, now seen corresponding path program 12 times [2024-06-28 01:44:58,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:58,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778217259] [2024-06-28 01:44:58,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:58,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:58,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:58,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:58,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778217259] [2024-06-28 01:44:58,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778217259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:58,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:58,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:58,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569594015] [2024-06-28 01:44:58,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:58,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:58,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:58,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:58,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:59,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:59,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 514 transitions, 9357 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:44:59,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:59,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:59,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:59,862 INFO L124 PetriNetUnfolderBase]: 2135/3569 cut-off events. [2024-06-28 01:44:59,862 INFO L125 PetriNetUnfolderBase]: For 121555/121555 co-relation queries the response was YES. [2024-06-28 01:44:59,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29680 conditions, 3569 events. 2135/3569 cut-off events. For 121555/121555 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 21377 event pairs, 215 based on Foata normal form. 2/3502 useless extension candidates. Maximal degree in co-relation 29543. Up to 2066 conditions per place. [2024-06-28 01:44:59,907 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 232 selfloop transitions, 313 changer transitions 0/551 dead transitions. [2024-06-28 01:44:59,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 551 transitions, 10898 flow [2024-06-28 01:44:59,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:59,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:59,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 01:44:59,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-28 01:44:59,908 INFO L175 Difference]: Start difference. First operand has 303 places, 514 transitions, 9357 flow. Second operand 9 states and 157 transitions. [2024-06-28 01:44:59,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 551 transitions, 10898 flow [2024-06-28 01:45:00,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 551 transitions, 10707 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 01:45:00,470 INFO L231 Difference]: Finished difference. Result has 302 places, 520 transitions, 9927 flow [2024-06-28 01:45:00,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9166, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9927, PETRI_PLACES=302, PETRI_TRANSITIONS=520} [2024-06-28 01:45:00,470 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2024-06-28 01:45:00,471 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 520 transitions, 9927 flow [2024-06-28 01:45:00,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:45:00,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:00,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:00,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:45:00,471 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:00,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:00,471 INFO L85 PathProgramCache]: Analyzing trace with hash -2046594538, now seen corresponding path program 6 times [2024-06-28 01:45:00,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:00,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040456190] [2024-06-28 01:45:00,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:00,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:01,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:01,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:01,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040456190] [2024-06-28 01:45:01,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040456190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:01,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:01,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:01,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108924148] [2024-06-28 01:45:01,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:01,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:01,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:01,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:01,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:01,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:01,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 520 transitions, 9927 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:45:01,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:01,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:01,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:02,211 INFO L124 PetriNetUnfolderBase]: 2133/3565 cut-off events. [2024-06-28 01:45:02,211 INFO L125 PetriNetUnfolderBase]: For 126960/126960 co-relation queries the response was YES. [2024-06-28 01:45:02,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30565 conditions, 3565 events. 2133/3565 cut-off events. For 126960/126960 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 21303 event pairs, 479 based on Foata normal form. 1/3501 useless extension candidates. Maximal degree in co-relation 30427. Up to 3027 conditions per place. [2024-06-28 01:45:02,249 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 493 selfloop transitions, 73 changer transitions 0/572 dead transitions. [2024-06-28 01:45:02,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 572 transitions, 11818 flow [2024-06-28 01:45:02,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:02,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 01:45:02,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-28 01:45:02,251 INFO L175 Difference]: Start difference. First operand has 302 places, 520 transitions, 9927 flow. Second operand 9 states and 154 transitions. [2024-06-28 01:45:02,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 572 transitions, 11818 flow [2024-06-28 01:45:02,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 572 transitions, 11191 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:02,758 INFO L231 Difference]: Finished difference. Result has 306 places, 520 transitions, 9485 flow [2024-06-28 01:45:02,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9333, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9485, PETRI_PLACES=306, PETRI_TRANSITIONS=520} [2024-06-28 01:45:02,759 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 265 predicate places. [2024-06-28 01:45:02,759 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 520 transitions, 9485 flow [2024-06-28 01:45:02,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:45:02,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:02,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:02,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:45:02,760 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:02,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:02,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2046594817, now seen corresponding path program 13 times [2024-06-28 01:45:02,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:02,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007281883] [2024-06-28 01:45:02,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:02,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:03,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:03,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007281883] [2024-06-28 01:45:03,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007281883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:03,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:03,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:03,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271939266] [2024-06-28 01:45:03,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:03,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:03,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:03,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:03,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:03,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:03,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 520 transitions, 9485 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:45:03,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:03,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:03,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:04,446 INFO L124 PetriNetUnfolderBase]: 2129/3561 cut-off events. [2024-06-28 01:45:04,446 INFO L125 PetriNetUnfolderBase]: For 118367/118367 co-relation queries the response was YES. [2024-06-28 01:45:04,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29536 conditions, 3561 events. 2129/3561 cut-off events. For 118367/118367 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21365 event pairs, 232 based on Foata normal form. 2/3493 useless extension candidates. Maximal degree in co-relation 29397. Up to 2060 conditions per place. [2024-06-28 01:45:04,492 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 263 selfloop transitions, 283 changer transitions 0/552 dead transitions. [2024-06-28 01:45:04,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 552 transitions, 10919 flow [2024-06-28 01:45:04,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:04,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:04,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 01:45:04,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-28 01:45:04,494 INFO L175 Difference]: Start difference. First operand has 306 places, 520 transitions, 9485 flow. Second operand 9 states and 160 transitions. [2024-06-28 01:45:04,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 552 transitions, 10919 flow [2024-06-28 01:45:05,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 552 transitions, 10649 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:05,143 INFO L231 Difference]: Finished difference. Result has 306 places, 520 transitions, 9788 flow [2024-06-28 01:45:05,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9215, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9788, PETRI_PLACES=306, PETRI_TRANSITIONS=520} [2024-06-28 01:45:05,144 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 265 predicate places. [2024-06-28 01:45:05,144 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 520 transitions, 9788 flow [2024-06-28 01:45:05,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 01:45:05,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:05,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:05,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:45:05,145 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:05,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:05,145 INFO L85 PathProgramCache]: Analyzing trace with hash -2037059434, now seen corresponding path program 1 times [2024-06-28 01:45:05,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:05,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354110216] [2024-06-28 01:45:05,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:05,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:06,054 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 01:45:06,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:06,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354110216] [2024-06-28 01:45:06,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354110216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:06,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:06,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:06,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433992460] [2024-06-28 01:45:06,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:06,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:06,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:06,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:06,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:06,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:06,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 520 transitions, 9788 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:06,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:06,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:06,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:07,056 INFO L124 PetriNetUnfolderBase]: 2126/3561 cut-off events. [2024-06-28 01:45:07,056 INFO L125 PetriNetUnfolderBase]: For 124668/124668 co-relation queries the response was YES. [2024-06-28 01:45:07,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29956 conditions, 3561 events. 2126/3561 cut-off events. For 124668/124668 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 21242 event pairs, 666 based on Foata normal form. 2/3498 useless extension candidates. Maximal degree in co-relation 29816. Up to 3263 conditions per place. [2024-06-28 01:45:07,103 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 513 selfloop transitions, 33 changer transitions 0/552 dead transitions. [2024-06-28 01:45:07,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 552 transitions, 11162 flow [2024-06-28 01:45:07,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:07,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:07,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:45:07,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-28 01:45:07,105 INFO L175 Difference]: Start difference. First operand has 306 places, 520 transitions, 9788 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:45:07,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 552 transitions, 11162 flow [2024-06-28 01:45:07,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 552 transitions, 10460 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:07,633 INFO L231 Difference]: Finished difference. Result has 307 places, 522 transitions, 9229 flow [2024-06-28 01:45:07,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9086, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9229, PETRI_PLACES=307, PETRI_TRANSITIONS=522} [2024-06-28 01:45:07,634 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 266 predicate places. [2024-06-28 01:45:07,634 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 522 transitions, 9229 flow [2024-06-28 01:45:07,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:07,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:07,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:07,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:45:07,635 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:07,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:07,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1715775969, now seen corresponding path program 1 times [2024-06-28 01:45:07,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:07,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601989153] [2024-06-28 01:45:07,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:07,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:07,685 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 01:45:07,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:07,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601989153] [2024-06-28 01:45:07,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601989153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:07,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:07,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:45:07,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227126244] [2024-06-28 01:45:07,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:07,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:45:07,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:07,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:45:07,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:45:07,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-28 01:45:07,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 522 transitions, 9229 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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 01:45:07,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:07,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-28 01:45:07,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:08,057 INFO L124 PetriNetUnfolderBase]: 792/1627 cut-off events. [2024-06-28 01:45:08,057 INFO L125 PetriNetUnfolderBase]: For 78473/78814 co-relation queries the response was YES. [2024-06-28 01:45:08,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12487 conditions, 1627 events. 792/1627 cut-off events. For 78473/78814 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 10540 event pairs, 161 based on Foata normal form. 168/1673 useless extension candidates. Maximal degree in co-relation 12348. Up to 483 conditions per place. [2024-06-28 01:45:08,077 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 101 selfloop transitions, 75 changer transitions 0/324 dead transitions. [2024-06-28 01:45:08,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 324 transitions, 5896 flow [2024-06-28 01:45:08,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:45:08,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:45:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-06-28 01:45:08,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6824324324324325 [2024-06-28 01:45:08,079 INFO L175 Difference]: Start difference. First operand has 307 places, 522 transitions, 9229 flow. Second operand 4 states and 101 transitions. [2024-06-28 01:45:08,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 324 transitions, 5896 flow [2024-06-28 01:45:08,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 324 transitions, 5036 flow, removed 72 selfloop flow, removed 56 redundant places. [2024-06-28 01:45:08,349 INFO L231 Difference]: Finished difference. Result has 256 places, 306 transitions, 4807 flow [2024-06-28 01:45:08,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4463, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4807, PETRI_PLACES=256, PETRI_TRANSITIONS=306} [2024-06-28 01:45:08,350 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 215 predicate places. [2024-06-28 01:45:08,350 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 306 transitions, 4807 flow [2024-06-28 01:45:08,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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 01:45:08,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:08,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:08,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:45:08,351 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:08,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:08,351 INFO L85 PathProgramCache]: Analyzing trace with hash -158891196, now seen corresponding path program 1 times [2024-06-28 01:45:08,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:08,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388112157] [2024-06-28 01:45:08,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:08,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:09,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:09,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:09,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388112157] [2024-06-28 01:45:09,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388112157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:09,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:09,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:09,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392026333] [2024-06-28 01:45:09,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:09,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:09,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:09,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:09,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:09,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:09,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 306 transitions, 4807 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:09,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:09,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:09,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:09,816 INFO L124 PetriNetUnfolderBase]: 1217/2147 cut-off events. [2024-06-28 01:45:09,816 INFO L125 PetriNetUnfolderBase]: For 68401/68401 co-relation queries the response was YES. [2024-06-28 01:45:09,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15718 conditions, 2147 events. 1217/2147 cut-off events. For 68401/68401 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 11853 event pairs, 257 based on Foata normal form. 2/2040 useless extension candidates. Maximal degree in co-relation 15597. Up to 1843 conditions per place. [2024-06-28 01:45:09,839 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 279 selfloop transitions, 49 changer transitions 0/335 dead transitions. [2024-06-28 01:45:09,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 335 transitions, 5651 flow [2024-06-28 01:45:09,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:09,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:45:09,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-28 01:45:09,840 INFO L175 Difference]: Start difference. First operand has 256 places, 306 transitions, 4807 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:45:09,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 335 transitions, 5651 flow [2024-06-28 01:45:10,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 335 transitions, 5645 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 01:45:10,121 INFO L231 Difference]: Finished difference. Result has 265 places, 308 transitions, 4970 flow [2024-06-28 01:45:10,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4803, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4970, PETRI_PLACES=265, PETRI_TRANSITIONS=308} [2024-06-28 01:45:10,121 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 224 predicate places. [2024-06-28 01:45:10,121 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 308 transitions, 4970 flow [2024-06-28 01:45:10,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:10,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:10,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:10,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:45:10,122 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:10,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:10,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1156952766, now seen corresponding path program 2 times [2024-06-28 01:45:10,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:10,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275924175] [2024-06-28 01:45:10,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:10,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:10,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:10,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275924175] [2024-06-28 01:45:10,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275924175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:10,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:10,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:10,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161416696] [2024-06-28 01:45:10,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:10,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:10,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:10,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:10,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:10,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:10,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 308 transitions, 4970 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:10,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:10,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:10,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:11,438 INFO L124 PetriNetUnfolderBase]: 1243/2195 cut-off events. [2024-06-28 01:45:11,438 INFO L125 PetriNetUnfolderBase]: For 72326/72326 co-relation queries the response was YES. [2024-06-28 01:45:11,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16280 conditions, 2195 events. 1243/2195 cut-off events. For 72326/72326 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 12258 event pairs, 325 based on Foata normal form. 2/2087 useless extension candidates. Maximal degree in co-relation 16156. Up to 1881 conditions per place. [2024-06-28 01:45:11,461 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 281 selfloop transitions, 53 changer transitions 0/341 dead transitions. [2024-06-28 01:45:11,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 341 transitions, 5904 flow [2024-06-28 01:45:11,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:11,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:11,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 01:45:11,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 01:45:11,463 INFO L175 Difference]: Start difference. First operand has 265 places, 308 transitions, 4970 flow. Second operand 10 states and 155 transitions. [2024-06-28 01:45:11,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 341 transitions, 5904 flow [2024-06-28 01:45:11,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 341 transitions, 5717 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:11,761 INFO L231 Difference]: Finished difference. Result has 268 places, 312 transitions, 5032 flow [2024-06-28 01:45:11,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4839, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5032, PETRI_PLACES=268, PETRI_TRANSITIONS=312} [2024-06-28 01:45:11,765 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 227 predicate places. [2024-06-28 01:45:11,765 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 312 transitions, 5032 flow [2024-06-28 01:45:11,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:11,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:11,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:11,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:45:11,765 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:11,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash -196358482, now seen corresponding path program 3 times [2024-06-28 01:45:11,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:11,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676831648] [2024-06-28 01:45:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:11,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:12,475 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 01:45:12,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:12,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676831648] [2024-06-28 01:45:12,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676831648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:12,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:12,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:12,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680311556] [2024-06-28 01:45:12,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:12,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:12,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:12,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:12,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:12,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:12,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 312 transitions, 5032 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:12,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:12,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:12,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:13,117 INFO L124 PetriNetUnfolderBase]: 1276/2252 cut-off events. [2024-06-28 01:45:13,117 INFO L125 PetriNetUnfolderBase]: For 75244/75244 co-relation queries the response was YES. [2024-06-28 01:45:13,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16614 conditions, 2252 events. 1276/2252 cut-off events. For 75244/75244 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 12633 event pairs, 216 based on Foata normal form. 2/2143 useless extension candidates. Maximal degree in co-relation 16489. Up to 1876 conditions per place. [2024-06-28 01:45:13,142 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 282 selfloop transitions, 59 changer transitions 0/348 dead transitions. [2024-06-28 01:45:13,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 348 transitions, 6008 flow [2024-06-28 01:45:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:13,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:13,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 01:45:13,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 01:45:13,144 INFO L175 Difference]: Start difference. First operand has 268 places, 312 transitions, 5032 flow. Second operand 10 states and 155 transitions. [2024-06-28 01:45:13,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 348 transitions, 6008 flow [2024-06-28 01:45:13,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 348 transitions, 5783 flow, removed 54 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:13,494 INFO L231 Difference]: Finished difference. Result has 269 places, 318 transitions, 5094 flow [2024-06-28 01:45:13,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4863, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5094, PETRI_PLACES=269, PETRI_TRANSITIONS=318} [2024-06-28 01:45:13,494 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 228 predicate places. [2024-06-28 01:45:13,495 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 318 transitions, 5094 flow [2024-06-28 01:45:13,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:13,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:13,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:13,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:45:13,495 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:13,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:13,496 INFO L85 PathProgramCache]: Analyzing trace with hash -924467646, now seen corresponding path program 4 times [2024-06-28 01:45:13,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:13,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155934752] [2024-06-28 01:45:13,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:13,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:14,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:14,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:14,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155934752] [2024-06-28 01:45:14,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155934752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:14,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:14,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:14,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606010954] [2024-06-28 01:45:14,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:14,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:14,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:14,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:14,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:14,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:14,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 318 transitions, 5094 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:14,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:14,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:14,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:15,138 INFO L124 PetriNetUnfolderBase]: 1311/2316 cut-off events. [2024-06-28 01:45:15,138 INFO L125 PetriNetUnfolderBase]: For 81691/81691 co-relation queries the response was YES. [2024-06-28 01:45:15,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17224 conditions, 2316 events. 1311/2316 cut-off events. For 81691/81691 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 13131 event pairs, 355 based on Foata normal form. 2/2205 useless extension candidates. Maximal degree in co-relation 17098. Up to 1974 conditions per place. [2024-06-28 01:45:15,161 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 280 selfloop transitions, 63 changer transitions 0/350 dead transitions. [2024-06-28 01:45:15,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 350 transitions, 6182 flow [2024-06-28 01:45:15,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:15,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:15,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:45:15,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-28 01:45:15,162 INFO L175 Difference]: Start difference. First operand has 269 places, 318 transitions, 5094 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:45:15,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 350 transitions, 6182 flow [2024-06-28 01:45:15,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 350 transitions, 6019 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:15,519 INFO L231 Difference]: Finished difference. Result has 271 places, 322 transitions, 5207 flow [2024-06-28 01:45:15,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4931, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5207, PETRI_PLACES=271, PETRI_TRANSITIONS=322} [2024-06-28 01:45:15,520 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-06-28 01:45:15,520 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 322 transitions, 5207 flow [2024-06-28 01:45:15,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:15,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:15,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:15,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:45:15,521 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:15,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:15,521 INFO L85 PathProgramCache]: Analyzing trace with hash 273212622, now seen corresponding path program 4 times [2024-06-28 01:45:15,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:15,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179891632] [2024-06-28 01:45:15,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:15,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:16,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:16,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179891632] [2024-06-28 01:45:16,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179891632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:16,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:16,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:16,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201372557] [2024-06-28 01:45:16,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:16,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:16,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:16,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:16,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:16,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:16,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 322 transitions, 5207 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:16,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:16,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:16,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:16,957 INFO L124 PetriNetUnfolderBase]: 1311/2317 cut-off events. [2024-06-28 01:45:16,958 INFO L125 PetriNetUnfolderBase]: For 80146/80146 co-relation queries the response was YES. [2024-06-28 01:45:16,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17132 conditions, 2317 events. 1311/2317 cut-off events. For 80146/80146 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 13130 event pairs, 364 based on Foata normal form. 1/2203 useless extension candidates. Maximal degree in co-relation 17005. Up to 2053 conditions per place. [2024-06-28 01:45:16,982 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 267 selfloop transitions, 73 changer transitions 0/347 dead transitions. [2024-06-28 01:45:16,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 347 transitions, 6041 flow [2024-06-28 01:45:16,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:16,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:16,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-28 01:45:16,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027027027027027 [2024-06-28 01:45:16,984 INFO L175 Difference]: Start difference. First operand has 271 places, 322 transitions, 5207 flow. Second operand 10 states and 149 transitions. [2024-06-28 01:45:16,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 347 transitions, 6041 flow [2024-06-28 01:45:17,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 347 transitions, 5857 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:17,324 INFO L231 Difference]: Finished difference. Result has 275 places, 324 transitions, 5233 flow [2024-06-28 01:45:17,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5023, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5233, PETRI_PLACES=275, PETRI_TRANSITIONS=324} [2024-06-28 01:45:17,324 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 234 predicate places. [2024-06-28 01:45:17,325 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 324 transitions, 5233 flow [2024-06-28 01:45:17,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:17,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:17,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:17,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:45:17,325 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:17,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:17,325 INFO L85 PathProgramCache]: Analyzing trace with hash 273206856, now seen corresponding path program 5 times [2024-06-28 01:45:17,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:17,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863584114] [2024-06-28 01:45:17,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:17,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:18,144 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 01:45:18,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:18,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863584114] [2024-06-28 01:45:18,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863584114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:18,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:18,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:18,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820904358] [2024-06-28 01:45:18,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:18,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:18,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:18,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:18,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:18,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:18,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 324 transitions, 5233 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:18,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:18,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:18,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:18,838 INFO L124 PetriNetUnfolderBase]: 1308/2312 cut-off events. [2024-06-28 01:45:18,838 INFO L125 PetriNetUnfolderBase]: For 77755/77755 co-relation queries the response was YES. [2024-06-28 01:45:18,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16934 conditions, 2312 events. 1308/2312 cut-off events. For 77755/77755 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 13105 event pairs, 364 based on Foata normal form. 2/2200 useless extension candidates. Maximal degree in co-relation 16805. Up to 2044 conditions per place. [2024-06-28 01:45:18,864 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 279 selfloop transitions, 63 changer transitions 0/349 dead transitions. [2024-06-28 01:45:18,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 349 transitions, 6043 flow [2024-06-28 01:45:18,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:18,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:18,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-28 01:45:18,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4081081081081081 [2024-06-28 01:45:18,865 INFO L175 Difference]: Start difference. First operand has 275 places, 324 transitions, 5233 flow. Second operand 10 states and 151 transitions. [2024-06-28 01:45:18,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 349 transitions, 6043 flow [2024-06-28 01:45:19,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 349 transitions, 5727 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:19,245 INFO L231 Difference]: Finished difference. Result has 276 places, 324 transitions, 5053 flow [2024-06-28 01:45:19,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4917, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5053, PETRI_PLACES=276, PETRI_TRANSITIONS=324} [2024-06-28 01:45:19,245 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 235 predicate places. [2024-06-28 01:45:19,246 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 324 transitions, 5053 flow [2024-06-28 01:45:19,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:19,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:19,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:19,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:45:19,246 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:19,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:19,247 INFO L85 PathProgramCache]: Analyzing trace with hash 476829356, now seen corresponding path program 1 times [2024-06-28 01:45:19,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:19,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817671647] [2024-06-28 01:45:19,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:19,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:19,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:19,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817671647] [2024-06-28 01:45:19,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817671647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:19,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:19,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:19,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455714352] [2024-06-28 01:45:19,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:19,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:19,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:19,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:19,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:20,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:20,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 324 transitions, 5053 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:20,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:20,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:20,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:20,580 INFO L124 PetriNetUnfolderBase]: 1319/2324 cut-off events. [2024-06-28 01:45:20,580 INFO L125 PetriNetUnfolderBase]: For 77581/77581 co-relation queries the response was YES. [2024-06-28 01:45:20,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16867 conditions, 2324 events. 1319/2324 cut-off events. For 77581/77581 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 13129 event pairs, 329 based on Foata normal form. 2/2212 useless extension candidates. Maximal degree in co-relation 16737. Up to 2069 conditions per place. [2024-06-28 01:45:20,606 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 284 selfloop transitions, 61 changer transitions 0/352 dead transitions. [2024-06-28 01:45:20,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 352 transitions, 5917 flow [2024-06-28 01:45:20,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:20,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:20,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-28 01:45:20,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3955773955773956 [2024-06-28 01:45:20,607 INFO L175 Difference]: Start difference. First operand has 276 places, 324 transitions, 5053 flow. Second operand 11 states and 161 transitions. [2024-06-28 01:45:20,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 352 transitions, 5917 flow [2024-06-28 01:45:20,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 352 transitions, 5779 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:20,990 INFO L231 Difference]: Finished difference. Result has 278 places, 326 transitions, 5090 flow [2024-06-28 01:45:20,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4915, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5090, PETRI_PLACES=278, PETRI_TRANSITIONS=326} [2024-06-28 01:45:20,991 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 237 predicate places. [2024-06-28 01:45:20,991 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 326 transitions, 5090 flow [2024-06-28 01:45:20,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:20,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:20,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:20,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:45:20,992 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:20,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:20,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1351661732, now seen corresponding path program 6 times [2024-06-28 01:45:20,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:20,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255142271] [2024-06-28 01:45:20,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:20,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:21,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:21,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:21,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255142271] [2024-06-28 01:45:21,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255142271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:21,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:21,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:21,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152624172] [2024-06-28 01:45:21,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:21,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:21,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:21,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:21,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:22,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:22,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 326 transitions, 5090 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:22,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:22,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:22,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:22,679 INFO L124 PetriNetUnfolderBase]: 1374/2422 cut-off events. [2024-06-28 01:45:22,679 INFO L125 PetriNetUnfolderBase]: For 86067/86067 co-relation queries the response was YES. [2024-06-28 01:45:22,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17735 conditions, 2422 events. 1374/2422 cut-off events. For 86067/86067 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 13881 event pairs, 330 based on Foata normal form. 2/2310 useless extension candidates. Maximal degree in co-relation 17604. Up to 2067 conditions per place. [2024-06-28 01:45:22,708 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 288 selfloop transitions, 65 changer transitions 0/360 dead transitions. [2024-06-28 01:45:22,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 360 transitions, 6222 flow [2024-06-28 01:45:22,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:22,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:22,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:45:22,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-28 01:45:22,710 INFO L175 Difference]: Start difference. First operand has 278 places, 326 transitions, 5090 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:45:22,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 360 transitions, 6222 flow [2024-06-28 01:45:23,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 360 transitions, 6080 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:23,104 INFO L231 Difference]: Finished difference. Result has 281 places, 334 transitions, 5286 flow [2024-06-28 01:45:23,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4948, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5286, PETRI_PLACES=281, PETRI_TRANSITIONS=334} [2024-06-28 01:45:23,104 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 240 predicate places. [2024-06-28 01:45:23,104 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 334 transitions, 5286 flow [2024-06-28 01:45:23,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:23,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:23,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:23,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:45:23,105 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:23,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:23,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1502285754, now seen corresponding path program 7 times [2024-06-28 01:45:23,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:23,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290095581] [2024-06-28 01:45:23,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:23,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:23,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:23,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:23,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290095581] [2024-06-28 01:45:23,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290095581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:23,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:23,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:23,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635005371] [2024-06-28 01:45:23,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:23,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:23,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:23,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:23,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:24,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:24,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 334 transitions, 5286 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:24,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:24,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:24,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:24,721 INFO L124 PetriNetUnfolderBase]: 1371/2417 cut-off events. [2024-06-28 01:45:24,721 INFO L125 PetriNetUnfolderBase]: For 85158/85158 co-relation queries the response was YES. [2024-06-28 01:45:24,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17713 conditions, 2417 events. 1371/2417 cut-off events. For 85158/85158 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 13812 event pairs, 342 based on Foata normal form. 2/2303 useless extension candidates. Maximal degree in co-relation 17580. Up to 2145 conditions per place. [2024-06-28 01:45:24,803 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 287 selfloop transitions, 63 changer transitions 0/357 dead transitions. [2024-06-28 01:45:24,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 357 transitions, 6100 flow [2024-06-28 01:45:24,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:24,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:24,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 01:45:24,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-06-28 01:45:24,805 INFO L175 Difference]: Start difference. First operand has 281 places, 334 transitions, 5286 flow. Second operand 10 states and 152 transitions. [2024-06-28 01:45:24,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 357 transitions, 6100 flow [2024-06-28 01:45:25,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 357 transitions, 5891 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:25,205 INFO L231 Difference]: Finished difference. Result has 284 places, 334 transitions, 5215 flow [2024-06-28 01:45:25,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5077, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5215, PETRI_PLACES=284, PETRI_TRANSITIONS=334} [2024-06-28 01:45:25,206 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 243 predicate places. [2024-06-28 01:45:25,206 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 334 transitions, 5215 flow [2024-06-28 01:45:25,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:25,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:25,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:25,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:45:25,207 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:25,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:25,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1414520290, now seen corresponding path program 2 times [2024-06-28 01:45:25,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:25,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120877997] [2024-06-28 01:45:25,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:25,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:25,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:25,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120877997] [2024-06-28 01:45:25,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120877997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:25,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:25,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:25,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192134288] [2024-06-28 01:45:25,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:25,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:25,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:25,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:25,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:25,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:25,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 334 transitions, 5215 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:25,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:25,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:25,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:26,625 INFO L124 PetriNetUnfolderBase]: 1385/2440 cut-off events. [2024-06-28 01:45:26,626 INFO L125 PetriNetUnfolderBase]: For 84502/84502 co-relation queries the response was YES. [2024-06-28 01:45:26,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17722 conditions, 2440 events. 1385/2440 cut-off events. For 84502/84502 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 13981 event pairs, 344 based on Foata normal form. 2/2322 useless extension candidates. Maximal degree in co-relation 17587. Up to 2182 conditions per place. [2024-06-28 01:45:26,652 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 295 selfloop transitions, 60 changer transitions 0/362 dead transitions. [2024-06-28 01:45:26,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 362 transitions, 6103 flow [2024-06-28 01:45:26,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:26,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:26,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-28 01:45:26,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39803439803439805 [2024-06-28 01:45:26,654 INFO L175 Difference]: Start difference. First operand has 284 places, 334 transitions, 5215 flow. Second operand 11 states and 162 transitions. [2024-06-28 01:45:26,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 362 transitions, 6103 flow [2024-06-28 01:45:27,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 362 transitions, 6001 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:27,036 INFO L231 Difference]: Finished difference. Result has 288 places, 338 transitions, 5308 flow [2024-06-28 01:45:27,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5113, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5308, PETRI_PLACES=288, PETRI_TRANSITIONS=338} [2024-06-28 01:45:27,037 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-28 01:45:27,037 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 338 transitions, 5308 flow [2024-06-28 01:45:27,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:27,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:27,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:27,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:45:27,037 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:27,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:27,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2101506520, now seen corresponding path program 8 times [2024-06-28 01:45:27,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:27,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966698417] [2024-06-28 01:45:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:27,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:27,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:27,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966698417] [2024-06-28 01:45:27,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966698417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:27,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:27,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:27,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072732201] [2024-06-28 01:45:27,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:27,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:27,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:27,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:27,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:27,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:27,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 338 transitions, 5308 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:27,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:27,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:27,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:28,516 INFO L124 PetriNetUnfolderBase]: 1401/2468 cut-off events. [2024-06-28 01:45:28,516 INFO L125 PetriNetUnfolderBase]: For 87922/87922 co-relation queries the response was YES. [2024-06-28 01:45:28,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18073 conditions, 2468 events. 1401/2468 cut-off events. For 87922/87922 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 14202 event pairs, 325 based on Foata normal form. 2/2350 useless extension candidates. Maximal degree in co-relation 17937. Up to 2121 conditions per place. [2024-06-28 01:45:28,545 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 264 selfloop transitions, 93 changer transitions 0/364 dead transitions. [2024-06-28 01:45:28,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 364 transitions, 6226 flow [2024-06-28 01:45:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:28,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:28,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 01:45:28,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-28 01:45:28,546 INFO L175 Difference]: Start difference. First operand has 288 places, 338 transitions, 5308 flow. Second operand 10 states and 153 transitions. [2024-06-28 01:45:28,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 364 transitions, 6226 flow [2024-06-28 01:45:28,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 364 transitions, 6079 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:28,974 INFO L231 Difference]: Finished difference. Result has 289 places, 340 transitions, 5435 flow [2024-06-28 01:45:28,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5161, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5435, PETRI_PLACES=289, PETRI_TRANSITIONS=340} [2024-06-28 01:45:28,975 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 248 predicate places. [2024-06-28 01:45:28,975 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 340 transitions, 5435 flow [2024-06-28 01:45:28,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:28,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:28,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:28,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:45:28,976 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:28,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:28,976 INFO L85 PathProgramCache]: Analyzing trace with hash 446217000, now seen corresponding path program 3 times [2024-06-28 01:45:28,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:28,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229587304] [2024-06-28 01:45:28,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:28,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:29,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:29,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229587304] [2024-06-28 01:45:29,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229587304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:29,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:29,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:29,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116968886] [2024-06-28 01:45:29,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:29,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:29,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:29,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:29,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:29,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:29,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 340 transitions, 5435 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:29,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:29,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:29,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:30,426 INFO L124 PetriNetUnfolderBase]: 1484/2593 cut-off events. [2024-06-28 01:45:30,426 INFO L125 PetriNetUnfolderBase]: For 114475/114475 co-relation queries the response was YES. [2024-06-28 01:45:30,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19811 conditions, 2593 events. 1484/2593 cut-off events. For 114475/114475 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14925 event pairs, 324 based on Foata normal form. 2/2464 useless extension candidates. Maximal degree in co-relation 19674. Up to 2000 conditions per place. [2024-06-28 01:45:30,458 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 248 selfloop transitions, 121 changer transitions 0/376 dead transitions. [2024-06-28 01:45:30,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 376 transitions, 6781 flow [2024-06-28 01:45:30,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:30,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:30,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 01:45:30,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-28 01:45:30,460 INFO L175 Difference]: Start difference. First operand has 289 places, 340 transitions, 5435 flow. Second operand 11 states and 171 transitions. [2024-06-28 01:45:30,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 376 transitions, 6781 flow [2024-06-28 01:45:30,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 376 transitions, 6525 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:30,973 INFO L231 Difference]: Finished difference. Result has 294 places, 348 transitions, 5673 flow [2024-06-28 01:45:30,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5179, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5673, PETRI_PLACES=294, PETRI_TRANSITIONS=348} [2024-06-28 01:45:30,974 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 253 predicate places. [2024-06-28 01:45:30,974 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 348 transitions, 5673 flow [2024-06-28 01:45:30,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:30,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:30,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:30,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:45:30,975 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:30,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:30,975 INFO L85 PathProgramCache]: Analyzing trace with hash 446225370, now seen corresponding path program 4 times [2024-06-28 01:45:30,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:30,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413874607] [2024-06-28 01:45:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:30,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:31,709 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 01:45:31,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:31,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413874607] [2024-06-28 01:45:31,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413874607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:31,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:31,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:31,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945810184] [2024-06-28 01:45:31,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:31,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:31,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:31,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:31,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:31,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:31,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 348 transitions, 5673 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:31,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:31,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:31,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:32,392 INFO L124 PetriNetUnfolderBase]: 1478/2585 cut-off events. [2024-06-28 01:45:32,392 INFO L125 PetriNetUnfolderBase]: For 111808/111808 co-relation queries the response was YES. [2024-06-28 01:45:32,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19700 conditions, 2585 events. 1478/2585 cut-off events. For 111808/111808 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14887 event pairs, 322 based on Foata normal form. 4/2458 useless extension candidates. Maximal degree in co-relation 19560. Up to 1999 conditions per place. [2024-06-28 01:45:32,421 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 234 selfloop transitions, 134 changer transitions 0/375 dead transitions. [2024-06-28 01:45:32,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 375 transitions, 6699 flow [2024-06-28 01:45:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:32,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:32,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-28 01:45:32,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-28 01:45:32,423 INFO L175 Difference]: Start difference. First operand has 294 places, 348 transitions, 5673 flow. Second operand 11 states and 169 transitions. [2024-06-28 01:45:32,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 375 transitions, 6699 flow [2024-06-28 01:45:32,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 375 transitions, 6479 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:32,901 INFO L231 Difference]: Finished difference. Result has 299 places, 348 transitions, 5728 flow [2024-06-28 01:45:32,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5453, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5728, PETRI_PLACES=299, PETRI_TRANSITIONS=348} [2024-06-28 01:45:32,902 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-28 01:45:32,902 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 348 transitions, 5728 flow [2024-06-28 01:45:32,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:32,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:32,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:32,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:45:32,902 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:32,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:32,903 INFO L85 PathProgramCache]: Analyzing trace with hash -2101499576, now seen corresponding path program 5 times [2024-06-28 01:45:32,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:32,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211366874] [2024-06-28 01:45:32,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:32,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:33,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:33,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211366874] [2024-06-28 01:45:33,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211366874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:33,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:33,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:33,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063546386] [2024-06-28 01:45:33,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:33,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:33,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:33,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:33,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:33,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:33,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 348 transitions, 5728 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:33,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:33,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:33,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:34,424 INFO L124 PetriNetUnfolderBase]: 1489/2602 cut-off events. [2024-06-28 01:45:34,424 INFO L125 PetriNetUnfolderBase]: For 107174/107174 co-relation queries the response was YES. [2024-06-28 01:45:34,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19945 conditions, 2602 events. 1489/2602 cut-off events. For 107174/107174 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 15017 event pairs, 328 based on Foata normal form. 2/2472 useless extension candidates. Maximal degree in co-relation 19803. Up to 2003 conditions per place. [2024-06-28 01:45:34,457 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 259 selfloop transitions, 111 changer transitions 0/377 dead transitions. [2024-06-28 01:45:34,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 377 transitions, 6815 flow [2024-06-28 01:45:34,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:34,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:34,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 01:45:34,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-28 01:45:34,459 INFO L175 Difference]: Start difference. First operand has 299 places, 348 transitions, 5728 flow. Second operand 11 states and 171 transitions. [2024-06-28 01:45:34,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 377 transitions, 6815 flow [2024-06-28 01:45:35,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 377 transitions, 6555 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:35,066 INFO L231 Difference]: Finished difference. Result has 301 places, 350 transitions, 5753 flow [2024-06-28 01:45:35,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5471, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5753, PETRI_PLACES=301, PETRI_TRANSITIONS=350} [2024-06-28 01:45:35,066 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 260 predicate places. [2024-06-28 01:45:35,066 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 350 transitions, 5753 flow [2024-06-28 01:45:35,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:35,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:35,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:35,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:45:35,067 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:35,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:35,068 INFO L85 PathProgramCache]: Analyzing trace with hash -910588468, now seen corresponding path program 9 times [2024-06-28 01:45:35,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:35,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571586926] [2024-06-28 01:45:35,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:35,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:35,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:35,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571586926] [2024-06-28 01:45:35,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571586926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:35,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:35,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:35,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646075666] [2024-06-28 01:45:35,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:35,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:35,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:35,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:35,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:36,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:36,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 350 transitions, 5753 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:36,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:36,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:36,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:36,696 INFO L124 PetriNetUnfolderBase]: 1505/2630 cut-off events. [2024-06-28 01:45:36,696 INFO L125 PetriNetUnfolderBase]: For 110969/110969 co-relation queries the response was YES. [2024-06-28 01:45:36,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20259 conditions, 2630 events. 1505/2630 cut-off events. For 110969/110969 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 15219 event pairs, 348 based on Foata normal form. 2/2501 useless extension candidates. Maximal degree in co-relation 20116. Up to 2283 conditions per place. [2024-06-28 01:45:36,728 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 286 selfloop transitions, 83 changer transitions 0/376 dead transitions. [2024-06-28 01:45:36,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 376 transitions, 6699 flow [2024-06-28 01:45:36,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:36,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:36,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 01:45:36,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-28 01:45:36,739 INFO L175 Difference]: Start difference. First operand has 301 places, 350 transitions, 5753 flow. Second operand 10 states and 154 transitions. [2024-06-28 01:45:36,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 376 transitions, 6699 flow [2024-06-28 01:45:37,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 376 transitions, 6493 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:37,317 INFO L231 Difference]: Finished difference. Result has 303 places, 352 transitions, 5805 flow [2024-06-28 01:45:37,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5547, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5805, PETRI_PLACES=303, PETRI_TRANSITIONS=352} [2024-06-28 01:45:37,318 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 262 predicate places. [2024-06-28 01:45:37,318 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 352 transitions, 5805 flow [2024-06-28 01:45:37,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:37,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:37,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:37,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:45:37,319 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:37,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:37,319 INFO L85 PathProgramCache]: Analyzing trace with hash -910408544, now seen corresponding path program 6 times [2024-06-28 01:45:37,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:37,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384664045] [2024-06-28 01:45:37,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:37,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:38,095 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 01:45:38,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:38,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384664045] [2024-06-28 01:45:38,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384664045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:38,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:38,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:38,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098128929] [2024-06-28 01:45:38,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:38,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:38,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:38,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:38,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:38,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:38,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 352 transitions, 5805 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:38,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:38,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:38,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:38,804 INFO L124 PetriNetUnfolderBase]: 1509/2636 cut-off events. [2024-06-28 01:45:38,804 INFO L125 PetriNetUnfolderBase]: For 112127/112127 co-relation queries the response was YES. [2024-06-28 01:45:38,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20218 conditions, 2636 events. 1509/2636 cut-off events. For 112127/112127 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 15269 event pairs, 365 based on Foata normal form. 2/2505 useless extension candidates. Maximal degree in co-relation 20074. Up to 2035 conditions per place. [2024-06-28 01:45:38,836 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 271 selfloop transitions, 103 changer transitions 0/381 dead transitions. [2024-06-28 01:45:38,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 381 transitions, 6906 flow [2024-06-28 01:45:38,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:38,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:38,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 01:45:38,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-28 01:45:38,852 INFO L175 Difference]: Start difference. First operand has 303 places, 352 transitions, 5805 flow. Second operand 11 states and 172 transitions. [2024-06-28 01:45:38,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 381 transitions, 6906 flow [2024-06-28 01:45:39,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 381 transitions, 6666 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:39,426 INFO L231 Difference]: Finished difference. Result has 306 places, 354 transitions, 5834 flow [2024-06-28 01:45:39,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5565, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5834, PETRI_PLACES=306, PETRI_TRANSITIONS=354} [2024-06-28 01:45:39,427 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 265 predicate places. [2024-06-28 01:45:39,427 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 354 transitions, 5834 flow [2024-06-28 01:45:39,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:39,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:39,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:39,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:45:39,429 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:39,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:39,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2101260256, now seen corresponding path program 1 times [2024-06-28 01:45:39,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:39,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733389410] [2024-06-28 01:45:39,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:39,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:40,312 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 01:45:40,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:40,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733389410] [2024-06-28 01:45:40,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733389410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:40,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:40,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:40,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987242490] [2024-06-28 01:45:40,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:40,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:40,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:40,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:40,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:40,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:40,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 354 transitions, 5834 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:40,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:40,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:40,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:40,986 INFO L124 PetriNetUnfolderBase]: 1505/2633 cut-off events. [2024-06-28 01:45:40,986 INFO L125 PetriNetUnfolderBase]: For 107395/107395 co-relation queries the response was YES. [2024-06-28 01:45:41,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20071 conditions, 2633 events. 1505/2633 cut-off events. For 107395/107395 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 15311 event pairs, 457 based on Foata normal form. 1/2500 useless extension candidates. Maximal degree in co-relation 19926. Up to 2462 conditions per place. [2024-06-28 01:45:41,020 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 338 selfloop transitions, 30 changer transitions 0/375 dead transitions. [2024-06-28 01:45:41,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 375 transitions, 6687 flow [2024-06-28 01:45:41,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:41,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:41,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-28 01:45:41,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3759213759213759 [2024-06-28 01:45:41,021 INFO L175 Difference]: Start difference. First operand has 306 places, 354 transitions, 5834 flow. Second operand 11 states and 153 transitions. [2024-06-28 01:45:41,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 375 transitions, 6687 flow [2024-06-28 01:45:41,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 375 transitions, 6501 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:41,652 INFO L231 Difference]: Finished difference. Result has 309 places, 355 transitions, 5730 flow [2024-06-28 01:45:41,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5649, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5730, PETRI_PLACES=309, PETRI_TRANSITIONS=355} [2024-06-28 01:45:41,653 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 268 predicate places. [2024-06-28 01:45:41,653 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 355 transitions, 5730 flow [2024-06-28 01:45:41,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:41,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:41,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:41,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:45:41,653 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:41,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:41,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2107940260, now seen corresponding path program 10 times [2024-06-28 01:45:41,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:41,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891204413] [2024-06-28 01:45:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:41,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:42,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:42,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891204413] [2024-06-28 01:45:42,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891204413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:42,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:42,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:42,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988160738] [2024-06-28 01:45:42,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:42,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:42,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:42,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:42,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:42,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:42,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 355 transitions, 5730 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:42,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:42,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:42,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:43,185 INFO L124 PetriNetUnfolderBase]: 1521/2657 cut-off events. [2024-06-28 01:45:43,186 INFO L125 PetriNetUnfolderBase]: For 112260/112260 co-relation queries the response was YES. [2024-06-28 01:45:43,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20109 conditions, 2657 events. 1521/2657 cut-off events. For 112260/112260 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 15428 event pairs, 351 based on Foata normal form. 2/2530 useless extension candidates. Maximal degree in co-relation 19963. Up to 2228 conditions per place. [2024-06-28 01:45:43,217 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 287 selfloop transitions, 89 changer transitions 0/383 dead transitions. [2024-06-28 01:45:43,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 383 transitions, 6706 flow [2024-06-28 01:45:43,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:43,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:45:43,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-28 01:45:43,218 INFO L175 Difference]: Start difference. First operand has 309 places, 355 transitions, 5730 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:45:43,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 383 transitions, 6706 flow [2024-06-28 01:45:43,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 383 transitions, 6633 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:43,840 INFO L231 Difference]: Finished difference. Result has 310 places, 357 transitions, 5931 flow [2024-06-28 01:45:43,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5657, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5931, PETRI_PLACES=310, PETRI_TRANSITIONS=357} [2024-06-28 01:45:43,840 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 269 predicate places. [2024-06-28 01:45:43,840 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 357 transitions, 5931 flow [2024-06-28 01:45:43,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:43,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:43,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:43,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:45:43,841 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:43,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:43,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2091079620, now seen corresponding path program 11 times [2024-06-28 01:45:43,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:43,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110304170] [2024-06-28 01:45:43,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:43,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:44,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:44,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110304170] [2024-06-28 01:45:44,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110304170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:44,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:44,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:44,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877977913] [2024-06-28 01:45:44,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:44,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:44,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:44,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:44,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:44,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:44,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 357 transitions, 5931 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:44,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:44,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:44,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:45,335 INFO L124 PetriNetUnfolderBase]: 1537/2688 cut-off events. [2024-06-28 01:45:45,335 INFO L125 PetriNetUnfolderBase]: For 118796/118796 co-relation queries the response was YES. [2024-06-28 01:45:45,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20683 conditions, 2688 events. 1537/2688 cut-off events. For 118796/118796 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 15694 event pairs, 277 based on Foata normal form. 2/2559 useless extension candidates. Maximal degree in co-relation 20536. Up to 2128 conditions per place. [2024-06-28 01:45:45,366 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 305 selfloop transitions, 73 changer transitions 0/385 dead transitions. [2024-06-28 01:45:45,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 385 transitions, 6911 flow [2024-06-28 01:45:45,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:45,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:45,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 01:45:45,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42042042042042044 [2024-06-28 01:45:45,368 INFO L175 Difference]: Start difference. First operand has 310 places, 357 transitions, 5931 flow. Second operand 9 states and 140 transitions. [2024-06-28 01:45:45,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 385 transitions, 6911 flow [2024-06-28 01:45:45,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 385 transitions, 6655 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:45,996 INFO L231 Difference]: Finished difference. Result has 311 places, 359 transitions, 5938 flow [2024-06-28 01:45:45,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5675, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5938, PETRI_PLACES=311, PETRI_TRANSITIONS=359} [2024-06-28 01:45:45,996 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 270 predicate places. [2024-06-28 01:45:45,997 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 359 transitions, 5938 flow [2024-06-28 01:45:45,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:45,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:45,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:45,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:45:45,997 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:45,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:45,998 INFO L85 PathProgramCache]: Analyzing trace with hash -682560996, now seen corresponding path program 12 times [2024-06-28 01:45:45,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:45,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059064403] [2024-06-28 01:45:45,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:45,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:46,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:46,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:46,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059064403] [2024-06-28 01:45:46,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059064403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:46,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:46,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:46,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108241896] [2024-06-28 01:45:46,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:46,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:46,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:46,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:46,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:46,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:46,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 359 transitions, 5938 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:46,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:46,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:46,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:47,627 INFO L124 PetriNetUnfolderBase]: 1553/2720 cut-off events. [2024-06-28 01:45:47,628 INFO L125 PetriNetUnfolderBase]: For 121911/121911 co-relation queries the response was YES. [2024-06-28 01:45:47,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20997 conditions, 2720 events. 1553/2720 cut-off events. For 121911/121911 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 15971 event pairs, 416 based on Foata normal form. 2/2592 useless extension candidates. Maximal degree in co-relation 20849. Up to 2319 conditions per place. [2024-06-28 01:45:47,658 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 290 selfloop transitions, 87 changer transitions 0/384 dead transitions. [2024-06-28 01:45:47,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 384 transitions, 6906 flow [2024-06-28 01:45:47,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:47,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:47,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-28 01:45:47,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114114114114114 [2024-06-28 01:45:47,659 INFO L175 Difference]: Start difference. First operand has 311 places, 359 transitions, 5938 flow. Second operand 9 states and 137 transitions. [2024-06-28 01:45:47,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 384 transitions, 6906 flow [2024-06-28 01:45:48,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 384 transitions, 6677 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:48,256 INFO L231 Difference]: Finished difference. Result has 313 places, 361 transitions, 6003 flow [2024-06-28 01:45:48,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5721, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6003, PETRI_PLACES=313, PETRI_TRANSITIONS=361} [2024-06-28 01:45:48,256 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-28 01:45:48,256 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 361 transitions, 6003 flow [2024-06-28 01:45:48,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:48,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:48,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:48,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:45:48,257 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:48,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:48,257 INFO L85 PathProgramCache]: Analyzing trace with hash -599443920, now seen corresponding path program 5 times [2024-06-28 01:45:48,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:48,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30182050] [2024-06-28 01:45:48,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:48,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:48,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:48,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30182050] [2024-06-28 01:45:48,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30182050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:48,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:48,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:48,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356950006] [2024-06-28 01:45:48,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:48,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:48,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:48,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:48,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:49,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:49,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 361 transitions, 6003 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:49,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:49,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:49,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:49,797 INFO L124 PetriNetUnfolderBase]: 1551/2718 cut-off events. [2024-06-28 01:45:49,798 INFO L125 PetriNetUnfolderBase]: For 108912/108912 co-relation queries the response was YES. [2024-06-28 01:45:49,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20617 conditions, 2718 events. 1551/2718 cut-off events. For 108912/108912 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 15976 event pairs, 412 based on Foata normal form. 1/2586 useless extension candidates. Maximal degree in co-relation 20468. Up to 2336 conditions per place. [2024-06-28 01:45:49,834 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 272 selfloop transitions, 103 changer transitions 0/382 dead transitions. [2024-06-28 01:45:49,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 382 transitions, 6861 flow [2024-06-28 01:45:49,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:49,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-28 01:45:49,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-28 01:45:49,835 INFO L175 Difference]: Start difference. First operand has 313 places, 361 transitions, 6003 flow. Second operand 9 states and 135 transitions. [2024-06-28 01:45:49,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 382 transitions, 6861 flow [2024-06-28 01:45:50,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 382 transitions, 6597 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:50,488 INFO L231 Difference]: Finished difference. Result has 313 places, 361 transitions, 5983 flow [2024-06-28 01:45:50,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5739, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5983, PETRI_PLACES=313, PETRI_TRANSITIONS=361} [2024-06-28 01:45:50,488 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-28 01:45:50,488 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 361 transitions, 5983 flow [2024-06-28 01:45:50,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:50,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:50,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:50,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:45:50,489 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:50,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:50,489 INFO L85 PathProgramCache]: Analyzing trace with hash -599448756, now seen corresponding path program 13 times [2024-06-28 01:45:50,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:50,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137845659] [2024-06-28 01:45:50,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:50,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:51,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:51,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137845659] [2024-06-28 01:45:51,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137845659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:51,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:51,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:51,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384229805] [2024-06-28 01:45:51,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:51,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:51,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:51,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:51,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:51,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:51,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 361 transitions, 5983 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:51,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:51,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:51,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:52,251 INFO L124 PetriNetUnfolderBase]: 1567/2745 cut-off events. [2024-06-28 01:45:52,252 INFO L125 PetriNetUnfolderBase]: For 110109/110109 co-relation queries the response was YES. [2024-06-28 01:45:52,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20754 conditions, 2745 events. 1567/2745 cut-off events. For 110109/110109 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 16145 event pairs, 387 based on Foata normal form. 2/2613 useless extension candidates. Maximal degree in co-relation 20606. Up to 2164 conditions per place. [2024-06-28 01:45:52,287 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 290 selfloop transitions, 91 changer transitions 0/388 dead transitions. [2024-06-28 01:45:52,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 388 transitions, 6963 flow [2024-06-28 01:45:52,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:52,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 01:45:52,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-06-28 01:45:52,289 INFO L175 Difference]: Start difference. First operand has 313 places, 361 transitions, 5983 flow. Second operand 9 states and 141 transitions. [2024-06-28 01:45:52,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 388 transitions, 6963 flow [2024-06-28 01:45:52,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 388 transitions, 6650 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:52,874 INFO L231 Difference]: Finished difference. Result has 313 places, 363 transitions, 5956 flow [2024-06-28 01:45:52,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5670, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5956, PETRI_PLACES=313, PETRI_TRANSITIONS=363} [2024-06-28 01:45:52,875 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-28 01:45:52,875 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 363 transitions, 5956 flow [2024-06-28 01:45:52,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:52,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:52,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:52,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:45:52,876 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:52,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:52,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1454264708, now seen corresponding path program 7 times [2024-06-28 01:45:52,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:52,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290114028] [2024-06-28 01:45:52,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:52,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:53,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:53,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290114028] [2024-06-28 01:45:53,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290114028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:53,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:53,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:53,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629034692] [2024-06-28 01:45:53,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:53,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:53,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:53,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:53,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:53,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:53,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 363 transitions, 5956 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:53,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:53,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:53,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:54,367 INFO L124 PetriNetUnfolderBase]: 1578/2758 cut-off events. [2024-06-28 01:45:54,367 INFO L125 PetriNetUnfolderBase]: For 109256/109256 co-relation queries the response was YES. [2024-06-28 01:45:54,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20939 conditions, 2758 events. 1578/2758 cut-off events. For 109256/109256 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 16181 event pairs, 376 based on Foata normal form. 2/2625 useless extension candidates. Maximal degree in co-relation 20790. Up to 2389 conditions per place. [2024-06-28 01:45:54,395 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 300 selfloop transitions, 82 changer transitions 0/389 dead transitions. [2024-06-28 01:45:54,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 389 transitions, 6906 flow [2024-06-28 01:45:54,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:54,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:54,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 01:45:54,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 01:45:54,397 INFO L175 Difference]: Start difference. First operand has 313 places, 363 transitions, 5956 flow. Second operand 10 states and 148 transitions. [2024-06-28 01:45:54,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 389 transitions, 6906 flow [2024-06-28 01:45:55,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 389 transitions, 6652 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:55,008 INFO L231 Difference]: Finished difference. Result has 315 places, 365 transitions, 5946 flow [2024-06-28 01:45:55,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5702, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5946, PETRI_PLACES=315, PETRI_TRANSITIONS=365} [2024-06-28 01:45:55,009 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 274 predicate places. [2024-06-28 01:45:55,009 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 365 transitions, 5946 flow [2024-06-28 01:45:55,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:55,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:55,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:55,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 01:45:55,010 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:55,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:55,010 INFO L85 PathProgramCache]: Analyzing trace with hash -842637886, now seen corresponding path program 14 times [2024-06-28 01:45:55,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:55,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115220209] [2024-06-28 01:45:55,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:55,897 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 01:45:55,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:55,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115220209] [2024-06-28 01:45:55,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115220209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:55,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:55,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:55,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183727673] [2024-06-28 01:45:55,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:55,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:55,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:55,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:55,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:55,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:55,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 365 transitions, 5946 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:55,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:55,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:55,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:56,772 INFO L124 PetriNetUnfolderBase]: 1594/2785 cut-off events. [2024-06-28 01:45:56,772 INFO L125 PetriNetUnfolderBase]: For 106692/106692 co-relation queries the response was YES. [2024-06-28 01:45:56,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21036 conditions, 2785 events. 1594/2785 cut-off events. For 106692/106692 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 16358 event pairs, 367 based on Foata normal form. 2/2653 useless extension candidates. Maximal degree in co-relation 20887. Up to 2342 conditions per place. [2024-06-28 01:45:56,808 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 288 selfloop transitions, 94 changer transitions 0/389 dead transitions. [2024-06-28 01:45:56,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 389 transitions, 6920 flow [2024-06-28 01:45:56,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:56,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-28 01:45:56,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4174174174174174 [2024-06-28 01:45:56,810 INFO L175 Difference]: Start difference. First operand has 315 places, 365 transitions, 5946 flow. Second operand 9 states and 139 transitions. [2024-06-28 01:45:56,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 389 transitions, 6920 flow [2024-06-28 01:45:57,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 389 transitions, 6757 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:57,439 INFO L231 Difference]: Finished difference. Result has 317 places, 367 transitions, 6074 flow [2024-06-28 01:45:57,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5783, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6074, PETRI_PLACES=317, PETRI_TRANSITIONS=367} [2024-06-28 01:45:57,442 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 276 predicate places. [2024-06-28 01:45:57,442 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 367 transitions, 6074 flow [2024-06-28 01:45:57,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:57,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:57,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:57,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 01:45:57,443 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:57,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:57,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1487332544, now seen corresponding path program 15 times [2024-06-28 01:45:57,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:57,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607542246] [2024-06-28 01:45:57,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:57,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:58,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:58,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:58,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607542246] [2024-06-28 01:45:58,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607542246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:58,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:58,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:58,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891074901] [2024-06-28 01:45:58,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:58,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:58,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:58,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:58,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:58,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:58,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 367 transitions, 6074 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:58,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:58,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:58,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:59,223 INFO L124 PetriNetUnfolderBase]: 1629/2848 cut-off events. [2024-06-28 01:45:59,223 INFO L125 PetriNetUnfolderBase]: For 120666/120666 co-relation queries the response was YES. [2024-06-28 01:45:59,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21963 conditions, 2848 events. 1629/2848 cut-off events. For 120666/120666 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 16845 event pairs, 361 based on Foata normal form. 2/2719 useless extension candidates. Maximal degree in co-relation 21813. Up to 2256 conditions per place. [2024-06-28 01:45:59,263 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 284 selfloop transitions, 105 changer transitions 0/396 dead transitions. [2024-06-28 01:45:59,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 396 transitions, 7320 flow [2024-06-28 01:45:59,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:59,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:59,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 01:45:59,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294294294294294 [2024-06-28 01:45:59,265 INFO L175 Difference]: Start difference. First operand has 317 places, 367 transitions, 6074 flow. Second operand 9 states and 143 transitions. [2024-06-28 01:45:59,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 396 transitions, 7320 flow [2024-06-28 01:45:59,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 396 transitions, 7012 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:59,904 INFO L231 Difference]: Finished difference. Result has 318 places, 371 transitions, 6179 flow [2024-06-28 01:45:59,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5776, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6179, PETRI_PLACES=318, PETRI_TRANSITIONS=371} [2024-06-28 01:45:59,904 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 277 predicate places. [2024-06-28 01:45:59,904 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 371 transitions, 6179 flow [2024-06-28 01:45:59,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:59,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:59,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:59,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 01:45:59,905 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:59,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:59,905 INFO L85 PathProgramCache]: Analyzing trace with hash -842457962, now seen corresponding path program 8 times [2024-06-28 01:45:59,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:59,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031204140] [2024-06-28 01:45:59,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:59,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:00,699 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 01:46:00,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:00,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031204140] [2024-06-28 01:46:00,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031204140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:00,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:00,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:00,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442297437] [2024-06-28 01:46:00,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:00,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:00,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:00,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:00,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:00,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:00,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 371 transitions, 6179 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:00,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:00,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:00,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:01,613 INFO L124 PetriNetUnfolderBase]: 1738/3014 cut-off events. [2024-06-28 01:46:01,613 INFO L125 PetriNetUnfolderBase]: For 144339/144339 co-relation queries the response was YES. [2024-06-28 01:46:01,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23893 conditions, 3014 events. 1738/3014 cut-off events. For 144339/144339 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 17887 event pairs, 437 based on Foata normal form. 2/2854 useless extension candidates. Maximal degree in co-relation 23742. Up to 2494 conditions per place. [2024-06-28 01:46:01,655 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 317 selfloop transitions, 98 changer transitions 0/422 dead transitions. [2024-06-28 01:46:01,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 422 transitions, 7903 flow [2024-06-28 01:46:01,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:01,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 01:46:01,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-28 01:46:01,656 INFO L175 Difference]: Start difference. First operand has 318 places, 371 transitions, 6179 flow. Second operand 11 states and 171 transitions. [2024-06-28 01:46:01,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 422 transitions, 7903 flow [2024-06-28 01:46:02,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 422 transitions, 7690 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-28 01:46:02,338 INFO L231 Difference]: Finished difference. Result has 326 places, 395 transitions, 6729 flow [2024-06-28 01:46:02,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5966, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6729, PETRI_PLACES=326, PETRI_TRANSITIONS=395} [2024-06-28 01:46:02,339 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 285 predicate places. [2024-06-28 01:46:02,339 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 395 transitions, 6729 flow [2024-06-28 01:46:02,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:02,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:02,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:02,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 01:46:02,339 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:02,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:02,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1493766284, now seen corresponding path program 16 times [2024-06-28 01:46:02,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:02,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206835375] [2024-06-28 01:46:02,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:02,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:03,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:03,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:03,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206835375] [2024-06-28 01:46:03,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206835375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:03,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:03,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:03,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039713828] [2024-06-28 01:46:03,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:03,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:03,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:03,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:03,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:03,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:03,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 395 transitions, 6729 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:03,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:03,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:03,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:04,037 INFO L124 PetriNetUnfolderBase]: 1735/3009 cut-off events. [2024-06-28 01:46:04,037 INFO L125 PetriNetUnfolderBase]: For 140544/140544 co-relation queries the response was YES. [2024-06-28 01:46:04,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24118 conditions, 3009 events. 1735/3009 cut-off events. For 140544/140544 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 17863 event pairs, 382 based on Foata normal form. 2/2851 useless extension candidates. Maximal degree in co-relation 23963. Up to 2564 conditions per place. [2024-06-28 01:46:04,078 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 304 selfloop transitions, 106 changer transitions 0/417 dead transitions. [2024-06-28 01:46:04,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 417 transitions, 7669 flow [2024-06-28 01:46:04,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:04,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 01:46:04,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144144144144144 [2024-06-28 01:46:04,080 INFO L175 Difference]: Start difference. First operand has 326 places, 395 transitions, 6729 flow. Second operand 9 states and 138 transitions. [2024-06-28 01:46:04,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 417 transitions, 7669 flow [2024-06-28 01:46:05,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 417 transitions, 7511 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 01:46:05,015 INFO L231 Difference]: Finished difference. Result has 329 places, 395 transitions, 6792 flow [2024-06-28 01:46:05,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6571, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6792, PETRI_PLACES=329, PETRI_TRANSITIONS=395} [2024-06-28 01:46:05,016 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 288 predicate places. [2024-06-28 01:46:05,016 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 395 transitions, 6792 flow [2024-06-28 01:46:05,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:05,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:05,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:05,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 01:46:05,016 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:05,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:05,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1493773228, now seen corresponding path program 9 times [2024-06-28 01:46:05,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:05,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664737070] [2024-06-28 01:46:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:05,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:05,680 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 01:46:05,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:05,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664737070] [2024-06-28 01:46:05,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664737070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:05,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:05,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:05,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254630075] [2024-06-28 01:46:05,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:05,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:05,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:05,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:05,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:05,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:05,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 395 transitions, 6792 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:05,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:05,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:05,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:06,510 INFO L124 PetriNetUnfolderBase]: 1746/3026 cut-off events. [2024-06-28 01:46:06,510 INFO L125 PetriNetUnfolderBase]: For 142585/142585 co-relation queries the response was YES. [2024-06-28 01:46:06,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24410 conditions, 3026 events. 1746/3026 cut-off events. For 142585/142585 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 17982 event pairs, 373 based on Foata normal form. 2/2865 useless extension candidates. Maximal degree in co-relation 24253. Up to 2136 conditions per place. [2024-06-28 01:46:06,549 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 263 selfloop transitions, 153 changer transitions 0/423 dead transitions. [2024-06-28 01:46:06,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 423 transitions, 8149 flow [2024-06-28 01:46:06,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:06,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:06,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:46:06,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-28 01:46:06,550 INFO L175 Difference]: Start difference. First operand has 329 places, 395 transitions, 6792 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:46:06,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 423 transitions, 8149 flow [2024-06-28 01:46:07,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 423 transitions, 7913 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:07,325 INFO L231 Difference]: Finished difference. Result has 331 places, 397 transitions, 6942 flow [2024-06-28 01:46:07,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6556, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6942, PETRI_PLACES=331, PETRI_TRANSITIONS=397} [2024-06-28 01:46:07,326 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 290 predicate places. [2024-06-28 01:46:07,326 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 397 transitions, 6942 flow [2024-06-28 01:46:07,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:07,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:07,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:07,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 01:46:07,327 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:07,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:07,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1494003868, now seen corresponding path program 10 times [2024-06-28 01:46:07,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:07,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655677821] [2024-06-28 01:46:07,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:07,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:08,054 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 01:46:08,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655677821] [2024-06-28 01:46:08,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655677821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:08,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:08,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:08,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009831160] [2024-06-28 01:46:08,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:08,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:08,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:08,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:08,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:08,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:08,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 397 transitions, 6942 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:08,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:08,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:08,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:08,900 INFO L124 PetriNetUnfolderBase]: 1757/3043 cut-off events. [2024-06-28 01:46:08,900 INFO L125 PetriNetUnfolderBase]: For 148338/148338 co-relation queries the response was YES. [2024-06-28 01:46:08,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24845 conditions, 3043 events. 1757/3043 cut-off events. For 148338/148338 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 18091 event pairs, 365 based on Foata normal form. 2/2881 useless extension candidates. Maximal degree in co-relation 24687. Up to 2140 conditions per place. [2024-06-28 01:46:08,940 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 251 selfloop transitions, 167 changer transitions 0/425 dead transitions. [2024-06-28 01:46:08,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 425 transitions, 8311 flow [2024-06-28 01:46:08,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:08,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:46:08,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-28 01:46:08,942 INFO L175 Difference]: Start difference. First operand has 331 places, 397 transitions, 6942 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:46:08,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 425 transitions, 8311 flow [2024-06-28 01:46:09,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 425 transitions, 8074 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 01:46:09,800 INFO L231 Difference]: Finished difference. Result has 335 places, 399 transitions, 7123 flow [2024-06-28 01:46:09,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6708, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7123, PETRI_PLACES=335, PETRI_TRANSITIONS=399} [2024-06-28 01:46:09,800 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 294 predicate places. [2024-06-28 01:46:09,800 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 399 transitions, 7123 flow [2024-06-28 01:46:09,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:09,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:09,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:09,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 01:46:09,801 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:09,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:09,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1494012548, now seen corresponding path program 2 times [2024-06-28 01:46:09,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:09,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050888431] [2024-06-28 01:46:09,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:09,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:10,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:10,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:10,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050888431] [2024-06-28 01:46:10,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050888431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:10,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:10,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:10,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332636228] [2024-06-28 01:46:10,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:10,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:10,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:10,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:10,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:10,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:10,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 399 transitions, 7123 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:10,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:10,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:10,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:11,480 INFO L124 PetriNetUnfolderBase]: 1750/3034 cut-off events. [2024-06-28 01:46:11,481 INFO L125 PetriNetUnfolderBase]: For 145327/145327 co-relation queries the response was YES. [2024-06-28 01:46:11,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24503 conditions, 3034 events. 1750/3034 cut-off events. For 145327/145327 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 18039 event pairs, 365 based on Foata normal form. 5/2875 useless extension candidates. Maximal degree in co-relation 24344. Up to 2163 conditions per place. [2024-06-28 01:46:11,516 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 228 selfloop transitions, 195 changer transitions 0/430 dead transitions. [2024-06-28 01:46:11,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 430 transitions, 8487 flow [2024-06-28 01:46:11,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:11,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 01:46:11,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-28 01:46:11,517 INFO L175 Difference]: Start difference. First operand has 335 places, 399 transitions, 7123 flow. Second operand 10 states and 153 transitions. [2024-06-28 01:46:11,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 430 transitions, 8487 flow [2024-06-28 01:46:12,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 430 transitions, 8155 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:12,302 INFO L231 Difference]: Finished difference. Result has 339 places, 406 transitions, 7521 flow [2024-06-28 01:46:12,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6804, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7521, PETRI_PLACES=339, PETRI_TRANSITIONS=406} [2024-06-28 01:46:12,303 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 298 predicate places. [2024-06-28 01:46:12,303 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 406 transitions, 7521 flow [2024-06-28 01:46:12,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:12,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:12,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:12,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 01:46:12,304 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:12,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:12,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1494012238, now seen corresponding path program 11 times [2024-06-28 01:46:12,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:12,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469308784] [2024-06-28 01:46:12,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:12,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:12,991 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 01:46:12,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:12,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469308784] [2024-06-28 01:46:12,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469308784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:12,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:12,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:12,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227104097] [2024-06-28 01:46:12,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:12,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:12,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:12,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:12,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:13,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:13,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 406 transitions, 7521 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:13,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:13,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:13,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:13,815 INFO L124 PetriNetUnfolderBase]: 1741/3020 cut-off events. [2024-06-28 01:46:13,815 INFO L125 PetriNetUnfolderBase]: For 132909/132909 co-relation queries the response was YES. [2024-06-28 01:46:13,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24415 conditions, 3020 events. 1741/3020 cut-off events. For 132909/132909 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 17926 event pairs, 364 based on Foata normal form. 4/2860 useless extension candidates. Maximal degree in co-relation 24254. Up to 2133 conditions per place. [2024-06-28 01:46:13,856 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 235 selfloop transitions, 188 changer transitions 0/430 dead transitions. [2024-06-28 01:46:13,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 430 transitions, 8651 flow [2024-06-28 01:46:13,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 01:46:13,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-28 01:46:13,857 INFO L175 Difference]: Start difference. First operand has 339 places, 406 transitions, 7521 flow. Second operand 10 states and 154 transitions. [2024-06-28 01:46:13,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 430 transitions, 8651 flow [2024-06-28 01:46:14,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 430 transitions, 8165 flow, removed 95 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:14,651 INFO L231 Difference]: Finished difference. Result has 342 places, 406 transitions, 7433 flow [2024-06-28 01:46:14,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7037, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7433, PETRI_PLACES=342, PETRI_TRANSITIONS=406} [2024-06-28 01:46:14,651 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 301 predicate places. [2024-06-28 01:46:14,651 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 406 transitions, 7433 flow [2024-06-28 01:46:14,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:14,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:14,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:14,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 01:46:14,652 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:14,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:14,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1611823914, now seen corresponding path program 17 times [2024-06-28 01:46:14,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:14,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106656321] [2024-06-28 01:46:14,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:14,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:15,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:15,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:15,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106656321] [2024-06-28 01:46:15,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106656321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:15,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:15,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:15,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827387226] [2024-06-28 01:46:15,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:15,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:15,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:15,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:15,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:15,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:15,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 406 transitions, 7433 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:15,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:15,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:15,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:16,314 INFO L124 PetriNetUnfolderBase]: 1757/3048 cut-off events. [2024-06-28 01:46:16,314 INFO L125 PetriNetUnfolderBase]: For 126723/126723 co-relation queries the response was YES. [2024-06-28 01:46:16,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24533 conditions, 3048 events. 1757/3048 cut-off events. For 126723/126723 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 18160 event pairs, 388 based on Foata normal form. 2/2887 useless extension candidates. Maximal degree in co-relation 24371. Up to 2555 conditions per place. [2024-06-28 01:46:16,358 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 324 selfloop transitions, 97 changer transitions 0/428 dead transitions. [2024-06-28 01:46:16,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 428 transitions, 8483 flow [2024-06-28 01:46:16,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:16,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:16,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-28 01:46:16,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4174174174174174 [2024-06-28 01:46:16,359 INFO L175 Difference]: Start difference. First operand has 342 places, 406 transitions, 7433 flow. Second operand 9 states and 139 transitions. [2024-06-28 01:46:16,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 428 transitions, 8483 flow [2024-06-28 01:46:17,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 428 transitions, 8141 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:17,266 INFO L231 Difference]: Finished difference. Result has 342 places, 408 transitions, 7388 flow [2024-06-28 01:46:17,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7091, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7388, PETRI_PLACES=342, PETRI_TRANSITIONS=408} [2024-06-28 01:46:17,267 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 301 predicate places. [2024-06-28 01:46:17,267 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 408 transitions, 7388 flow [2024-06-28 01:46:17,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:17,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:17,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:17,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 01:46:17,267 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:17,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:17,268 INFO L85 PathProgramCache]: Analyzing trace with hash 410504886, now seen corresponding path program 18 times [2024-06-28 01:46:17,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:17,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831639413] [2024-06-28 01:46:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:17,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:18,048 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 01:46:18,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:18,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831639413] [2024-06-28 01:46:18,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831639413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:18,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:18,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:18,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052753552] [2024-06-28 01:46:18,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:18,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:18,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:18,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:18,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:18,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:18,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 408 transitions, 7388 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:18,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:18,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:18,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:18,887 INFO L124 PetriNetUnfolderBase]: 1776/3082 cut-off events. [2024-06-28 01:46:18,887 INFO L125 PetriNetUnfolderBase]: For 131154/131154 co-relation queries the response was YES. [2024-06-28 01:46:18,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24779 conditions, 3082 events. 1776/3082 cut-off events. For 131154/131154 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 18406 event pairs, 386 based on Foata normal form. 2/2922 useless extension candidates. Maximal degree in co-relation 24617. Up to 2519 conditions per place. [2024-06-28 01:46:18,931 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 326 selfloop transitions, 102 changer transitions 0/435 dead transitions. [2024-06-28 01:46:18,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 435 transitions, 8724 flow [2024-06-28 01:46:18,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:18,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 01:46:18,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294294294294294 [2024-06-28 01:46:18,933 INFO L175 Difference]: Start difference. First operand has 342 places, 408 transitions, 7388 flow. Second operand 9 states and 143 transitions. [2024-06-28 01:46:18,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 435 transitions, 8724 flow [2024-06-28 01:46:19,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 435 transitions, 8443 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:19,754 INFO L231 Difference]: Finished difference. Result has 344 places, 412 transitions, 7516 flow [2024-06-28 01:46:19,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7107, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7516, PETRI_PLACES=344, PETRI_TRANSITIONS=412} [2024-06-28 01:46:19,754 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 303 predicate places. [2024-06-28 01:46:19,754 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 412 transitions, 7516 flow [2024-06-28 01:46:19,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:19,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:19,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:19,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 01:46:19,755 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:19,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:19,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1614629614, now seen corresponding path program 12 times [2024-06-28 01:46:19,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:19,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970872542] [2024-06-28 01:46:19,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:19,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:20,646 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 01:46:20,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:20,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970872542] [2024-06-28 01:46:20,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970872542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:20,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:20,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:20,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071257305] [2024-06-28 01:46:20,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:20,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:20,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:20,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:20,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:20,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:20,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 412 transitions, 7516 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:20,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:20,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:20,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:21,571 INFO L124 PetriNetUnfolderBase]: 1804/3124 cut-off events. [2024-06-28 01:46:21,571 INFO L125 PetriNetUnfolderBase]: For 139959/139959 co-relation queries the response was YES. [2024-06-28 01:46:21,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25226 conditions, 3124 events. 1804/3124 cut-off events. For 139959/139959 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 18666 event pairs, 453 based on Foata normal form. 2/2957 useless extension candidates. Maximal degree in co-relation 25063. Up to 1928 conditions per place. [2024-06-28 01:46:21,607 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 285 selfloop transitions, 151 changer transitions 0/443 dead transitions. [2024-06-28 01:46:21,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 443 transitions, 9184 flow [2024-06-28 01:46:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:21,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:21,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:46:21,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-28 01:46:21,608 INFO L175 Difference]: Start difference. First operand has 344 places, 412 transitions, 7516 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:46:21,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 443 transitions, 9184 flow [2024-06-28 01:46:22,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 443 transitions, 8950 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-28 01:46:22,493 INFO L231 Difference]: Finished difference. Result has 350 places, 418 transitions, 7803 flow [2024-06-28 01:46:22,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7282, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7803, PETRI_PLACES=350, PETRI_TRANSITIONS=418} [2024-06-28 01:46:22,493 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 309 predicate places. [2024-06-28 01:46:22,494 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 418 transitions, 7803 flow [2024-06-28 01:46:22,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:22,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:22,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:22,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 01:46:22,494 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:22,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:22,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1618253004, now seen corresponding path program 19 times [2024-06-28 01:46:22,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:22,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146601548] [2024-06-28 01:46:22,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:22,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:23,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:23,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146601548] [2024-06-28 01:46:23,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146601548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:23,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:23,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:23,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794578288] [2024-06-28 01:46:23,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:23,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:23,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:23,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:23,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:23,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:23,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 418 transitions, 7803 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:23,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:23,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:23,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:24,407 INFO L124 PetriNetUnfolderBase]: 1820/3153 cut-off events. [2024-06-28 01:46:24,407 INFO L125 PetriNetUnfolderBase]: For 142392/142392 co-relation queries the response was YES. [2024-06-28 01:46:24,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25779 conditions, 3153 events. 1820/3153 cut-off events. For 142392/142392 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 18892 event pairs, 395 based on Foata normal form. 2/2986 useless extension candidates. Maximal degree in co-relation 25613. Up to 2658 conditions per place. [2024-06-28 01:46:24,452 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 338 selfloop transitions, 96 changer transitions 0/441 dead transitions. [2024-06-28 01:46:24,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 441 transitions, 8869 flow [2024-06-28 01:46:24,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:24,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:24,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 01:46:24,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-06-28 01:46:24,454 INFO L175 Difference]: Start difference. First operand has 350 places, 418 transitions, 7803 flow. Second operand 9 states and 141 transitions. [2024-06-28 01:46:24,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 441 transitions, 8869 flow [2024-06-28 01:46:25,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 441 transitions, 8435 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:25,387 INFO L231 Difference]: Finished difference. Result has 352 places, 420 transitions, 7648 flow [2024-06-28 01:46:25,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7369, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7648, PETRI_PLACES=352, PETRI_TRANSITIONS=420} [2024-06-28 01:46:25,387 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-28 01:46:25,387 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 420 transitions, 7648 flow [2024-06-28 01:46:25,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:25,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:25,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:25,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 01:46:25,388 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:25,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:25,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1618259948, now seen corresponding path program 13 times [2024-06-28 01:46:25,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:25,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811806744] [2024-06-28 01:46:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:25,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:26,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:26,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:26,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811806744] [2024-06-28 01:46:26,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811806744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:26,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:26,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:26,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521646984] [2024-06-28 01:46:26,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:26,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:26,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:26,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:26,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:26,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:26,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 420 transitions, 7648 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:26,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:26,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:26,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:26,993 INFO L124 PetriNetUnfolderBase]: 1888/3255 cut-off events. [2024-06-28 01:46:26,994 INFO L125 PetriNetUnfolderBase]: For 163211/163211 co-relation queries the response was YES. [2024-06-28 01:46:27,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27032 conditions, 3255 events. 1888/3255 cut-off events. For 163211/163211 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 19480 event pairs, 461 based on Foata normal form. 2/3078 useless extension candidates. Maximal degree in co-relation 26866. Up to 2000 conditions per place. [2024-06-28 01:46:27,038 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 297 selfloop transitions, 150 changer transitions 0/454 dead transitions. [2024-06-28 01:46:27,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 454 transitions, 9532 flow [2024-06-28 01:46:27,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:27,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:46:27,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-28 01:46:27,039 INFO L175 Difference]: Start difference. First operand has 352 places, 420 transitions, 7648 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:46:27,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 454 transitions, 9532 flow [2024-06-28 01:46:27,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 454 transitions, 9273 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:27,969 INFO L231 Difference]: Finished difference. Result has 356 places, 428 transitions, 7919 flow [2024-06-28 01:46:27,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7389, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7919, PETRI_PLACES=356, PETRI_TRANSITIONS=428} [2024-06-28 01:46:27,969 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 315 predicate places. [2024-06-28 01:46:27,970 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 428 transitions, 7919 flow [2024-06-28 01:46:27,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:27,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:27,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:27,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 01:46:27,970 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:27,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:27,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1618490588, now seen corresponding path program 14 times [2024-06-28 01:46:27,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:27,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189294232] [2024-06-28 01:46:27,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:27,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:28,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:28,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:28,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189294232] [2024-06-28 01:46:28,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189294232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:28,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:28,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:28,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886641686] [2024-06-28 01:46:28,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:28,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:28,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:28,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:28,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:28,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:28,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 428 transitions, 7919 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:28,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:28,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:28,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:29,686 INFO L124 PetriNetUnfolderBase]: 1899/3272 cut-off events. [2024-06-28 01:46:29,686 INFO L125 PetriNetUnfolderBase]: For 167712/167712 co-relation queries the response was YES. [2024-06-28 01:46:29,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27402 conditions, 3272 events. 1899/3272 cut-off events. For 167712/167712 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 19625 event pairs, 458 based on Foata normal form. 2/3094 useless extension candidates. Maximal degree in co-relation 27234. Up to 2004 conditions per place. [2024-06-28 01:46:29,733 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 297 selfloop transitions, 152 changer transitions 0/456 dead transitions. [2024-06-28 01:46:29,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 456 transitions, 9674 flow [2024-06-28 01:46:29,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:29,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:46:29,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-28 01:46:29,734 INFO L175 Difference]: Start difference. First operand has 356 places, 428 transitions, 7919 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:46:29,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 456 transitions, 9674 flow [2024-06-28 01:46:30,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 456 transitions, 9365 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 01:46:30,762 INFO L231 Difference]: Finished difference. Result has 361 places, 430 transitions, 7986 flow [2024-06-28 01:46:30,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7611, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7986, PETRI_PLACES=361, PETRI_TRANSITIONS=430} [2024-06-28 01:46:30,763 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-28 01:46:30,763 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 430 transitions, 7986 flow [2024-06-28 01:46:30,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:30,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:30,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:30,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 01:46:30,763 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:30,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:30,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1618498958, now seen corresponding path program 15 times [2024-06-28 01:46:30,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:30,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454190787] [2024-06-28 01:46:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:30,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:31,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:31,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:31,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454190787] [2024-06-28 01:46:31,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454190787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:31,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:31,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:31,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152909990] [2024-06-28 01:46:31,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:31,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:31,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:31,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:31,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:31,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:31,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 430 transitions, 7986 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:31,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:31,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:31,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:32,469 INFO L124 PetriNetUnfolderBase]: 1893/3264 cut-off events. [2024-06-28 01:46:32,469 INFO L125 PetriNetUnfolderBase]: For 162128/162128 co-relation queries the response was YES. [2024-06-28 01:46:32,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26998 conditions, 3264 events. 1893/3264 cut-off events. For 162128/162128 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 19596 event pairs, 456 based on Foata normal form. 4/3088 useless extension candidates. Maximal degree in co-relation 26829. Up to 2003 conditions per place. [2024-06-28 01:46:32,508 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 295 selfloop transitions, 153 changer transitions 0/455 dead transitions. [2024-06-28 01:46:32,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 455 transitions, 9512 flow [2024-06-28 01:46:32,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:32,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:32,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:46:32,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:46:32,510 INFO L175 Difference]: Start difference. First operand has 361 places, 430 transitions, 7986 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:46:32,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 455 transitions, 9512 flow [2024-06-28 01:46:33,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 455 transitions, 9117 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:33,344 INFO L231 Difference]: Finished difference. Result has 364 places, 430 transitions, 7904 flow [2024-06-28 01:46:33,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7591, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7904, PETRI_PLACES=364, PETRI_TRANSITIONS=430} [2024-06-28 01:46:33,345 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 323 predicate places. [2024-06-28 01:46:33,345 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 430 transitions, 7904 flow [2024-06-28 01:46:33,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:33,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:33,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:33,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 01:46:33,345 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:33,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:33,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1618499268, now seen corresponding path program 3 times [2024-06-28 01:46:33,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:33,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641336905] [2024-06-28 01:46:33,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:33,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:34,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:34,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:34,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641336905] [2024-06-28 01:46:34,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641336905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:34,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:34,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:34,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554132811] [2024-06-28 01:46:34,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:34,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:34,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:34,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:34,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:34,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:34,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 430 transitions, 7904 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:34,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:34,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:34,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:35,163 INFO L124 PetriNetUnfolderBase]: 1889/3261 cut-off events. [2024-06-28 01:46:35,163 INFO L125 PetriNetUnfolderBase]: For 150184/150184 co-relation queries the response was YES. [2024-06-28 01:46:35,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26635 conditions, 3261 events. 1889/3261 cut-off events. For 150184/150184 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 19600 event pairs, 549 based on Foata normal form. 1/3080 useless extension candidates. Maximal degree in co-relation 26465. Up to 2994 conditions per place. [2024-06-28 01:46:35,209 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 392 selfloop transitions, 48 changer transitions 0/447 dead transitions. [2024-06-28 01:46:35,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 447 transitions, 8889 flow [2024-06-28 01:46:35,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:35,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-28 01:46:35,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918918918918919 [2024-06-28 01:46:35,210 INFO L175 Difference]: Start difference. First operand has 364 places, 430 transitions, 7904 flow. Second operand 10 states and 145 transitions. [2024-06-28 01:46:35,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 447 transitions, 8889 flow [2024-06-28 01:46:36,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 447 transitions, 8583 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:36,153 INFO L231 Difference]: Finished difference. Result has 366 places, 431 transitions, 7716 flow [2024-06-28 01:46:36,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7599, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7716, PETRI_PLACES=366, PETRI_TRANSITIONS=431} [2024-06-28 01:46:36,154 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 325 predicate places. [2024-06-28 01:46:36,154 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 431 transitions, 7716 flow [2024-06-28 01:46:36,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:36,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:36,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:36,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 01:46:36,155 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:36,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:36,155 INFO L85 PathProgramCache]: Analyzing trace with hash 979834222, now seen corresponding path program 20 times [2024-06-28 01:46:36,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:36,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898185878] [2024-06-28 01:46:36,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:36,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:37,018 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 01:46:37,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:37,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898185878] [2024-06-28 01:46:37,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898185878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:37,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:37,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:37,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600350912] [2024-06-28 01:46:37,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:37,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:37,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:37,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:37,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:37,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:37,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 431 transitions, 7716 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:37,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:37,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:37,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:37,943 INFO L124 PetriNetUnfolderBase]: 1886/3252 cut-off events. [2024-06-28 01:46:37,943 INFO L125 PetriNetUnfolderBase]: For 145712/145712 co-relation queries the response was YES. [2024-06-28 01:46:37,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26028 conditions, 3252 events. 1886/3252 cut-off events. For 145712/145712 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 19504 event pairs, 385 based on Foata normal form. 2/3075 useless extension candidates. Maximal degree in co-relation 25857. Up to 2757 conditions per place. [2024-06-28 01:46:37,989 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 330 selfloop transitions, 114 changer transitions 0/451 dead transitions. [2024-06-28 01:46:37,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 451 transitions, 8718 flow [2024-06-28 01:46:37,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:37,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 01:46:37,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144144144144144 [2024-06-28 01:46:37,990 INFO L175 Difference]: Start difference. First operand has 366 places, 431 transitions, 7716 flow. Second operand 9 states and 138 transitions. [2024-06-28 01:46:37,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 451 transitions, 8718 flow [2024-06-28 01:46:39,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 451 transitions, 8545 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:39,059 INFO L231 Difference]: Finished difference. Result has 367 places, 431 transitions, 7776 flow [2024-06-28 01:46:39,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7543, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7776, PETRI_PLACES=367, PETRI_TRANSITIONS=431} [2024-06-28 01:46:39,060 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 326 predicate places. [2024-06-28 01:46:39,060 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 431 transitions, 7776 flow [2024-06-28 01:46:39,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:39,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:39,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:39,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 01:46:39,069 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:39,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:39,070 INFO L85 PathProgramCache]: Analyzing trace with hash 980080176, now seen corresponding path program 16 times [2024-06-28 01:46:39,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:39,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793829775] [2024-06-28 01:46:39,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:39,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:39,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:39,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793829775] [2024-06-28 01:46:39,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793829775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:39,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:39,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:39,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928750167] [2024-06-28 01:46:39,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:39,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:39,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:39,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:39,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:39,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:39,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 431 transitions, 7776 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:39,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:39,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:39,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:40,824 INFO L124 PetriNetUnfolderBase]: 1952/3352 cut-off events. [2024-06-28 01:46:40,824 INFO L125 PetriNetUnfolderBase]: For 174799/174799 co-relation queries the response was YES. [2024-06-28 01:46:40,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27490 conditions, 3352 events. 1952/3352 cut-off events. For 174799/174799 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 20163 event pairs, 408 based on Foata normal form. 4/3167 useless extension candidates. Maximal degree in co-relation 27318. Up to 2038 conditions per place. [2024-06-28 01:46:40,872 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 282 selfloop transitions, 175 changer transitions 0/464 dead transitions. [2024-06-28 01:46:40,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 464 transitions, 9557 flow [2024-06-28 01:46:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:40,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:40,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:46:40,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-28 01:46:40,874 INFO L175 Difference]: Start difference. First operand has 367 places, 431 transitions, 7776 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:46:40,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 464 transitions, 9557 flow [2024-06-28 01:46:42,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 464 transitions, 9310 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:42,031 INFO L231 Difference]: Finished difference. Result has 370 places, 438 transitions, 8093 flow [2024-06-28 01:46:42,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7529, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8093, PETRI_PLACES=370, PETRI_TRANSITIONS=438} [2024-06-28 01:46:42,032 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 329 predicate places. [2024-06-28 01:46:42,032 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 438 transitions, 8093 flow [2024-06-28 01:46:42,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:42,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:42,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:42,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 01:46:42,033 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:42,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:42,033 INFO L85 PathProgramCache]: Analyzing trace with hash 980080486, now seen corresponding path program 4 times [2024-06-28 01:46:42,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:42,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95548688] [2024-06-28 01:46:42,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:42,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:43,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:43,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95548688] [2024-06-28 01:46:43,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95548688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:43,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:43,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:43,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306130431] [2024-06-28 01:46:43,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:43,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:43,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:43,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:43,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:43,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:43,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 438 transitions, 8093 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:43,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:43,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:43,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:43,918 INFO L124 PetriNetUnfolderBase]: 1948/3349 cut-off events. [2024-06-28 01:46:43,918 INFO L125 PetriNetUnfolderBase]: For 165795/165795 co-relation queries the response was YES. [2024-06-28 01:46:43,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27709 conditions, 3349 events. 1948/3349 cut-off events. For 165795/165795 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 20166 event pairs, 556 based on Foata normal form. 1/3159 useless extension candidates. Maximal degree in co-relation 27535. Up to 3082 conditions per place. [2024-06-28 01:46:43,966 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 397 selfloop transitions, 51 changer transitions 0/455 dead transitions. [2024-06-28 01:46:43,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 455 transitions, 9093 flow [2024-06-28 01:46:43,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:43,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:43,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-28 01:46:43,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891891891891892 [2024-06-28 01:46:43,967 INFO L175 Difference]: Start difference. First operand has 370 places, 438 transitions, 8093 flow. Second operand 10 states and 144 transitions. [2024-06-28 01:46:43,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 455 transitions, 9093 flow [2024-06-28 01:46:45,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 455 transitions, 8698 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 01:46:45,166 INFO L231 Difference]: Finished difference. Result has 374 places, 439 transitions, 7821 flow [2024-06-28 01:46:45,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7699, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7821, PETRI_PLACES=374, PETRI_TRANSITIONS=439} [2024-06-28 01:46:45,167 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 333 predicate places. [2024-06-28 01:46:45,167 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 439 transitions, 7821 flow [2024-06-28 01:46:45,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:45,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:45,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:45,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 01:46:45,168 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:45,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:45,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1275299376, now seen corresponding path program 17 times [2024-06-28 01:46:45,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:45,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698127007] [2024-06-28 01:46:45,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:45,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:46,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:46,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:46,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698127007] [2024-06-28 01:46:46,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698127007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:46,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:46,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:46,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666447264] [2024-06-28 01:46:46,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:46,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:46,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:46,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:46,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:46,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:46,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 439 transitions, 7821 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:46,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:46,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:46,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:47,081 INFO L124 PetriNetUnfolderBase]: 1999/3432 cut-off events. [2024-06-28 01:46:47,081 INFO L125 PetriNetUnfolderBase]: For 189980/189980 co-relation queries the response was YES. [2024-06-28 01:46:47,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28041 conditions, 3432 events. 1999/3432 cut-off events. For 189980/189980 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 20732 event pairs, 680 based on Foata normal form. 4/3239 useless extension candidates. Maximal degree in co-relation 27866. Up to 3215 conditions per place. [2024-06-28 01:46:47,126 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 436 selfloop transitions, 21 changer transitions 0/464 dead transitions. [2024-06-28 01:46:47,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 464 transitions, 9177 flow [2024-06-28 01:46:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:47,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-28 01:46:47,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891891891891892 [2024-06-28 01:46:47,140 INFO L175 Difference]: Start difference. First operand has 374 places, 439 transitions, 7821 flow. Second operand 10 states and 144 transitions. [2024-06-28 01:46:47,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 464 transitions, 9177 flow [2024-06-28 01:46:48,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 464 transitions, 9062 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:48,427 INFO L231 Difference]: Finished difference. Result has 377 places, 445 transitions, 7936 flow [2024-06-28 01:46:48,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7706, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7936, PETRI_PLACES=377, PETRI_TRANSITIONS=445} [2024-06-28 01:46:48,428 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 336 predicate places. [2024-06-28 01:46:48,428 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 445 transitions, 7936 flow [2024-06-28 01:46:48,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:48,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:48,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:48,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 01:46:48,428 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:48,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:48,429 INFO L85 PathProgramCache]: Analyzing trace with hash 980071806, now seen corresponding path program 18 times [2024-06-28 01:46:48,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:48,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185072632] [2024-06-28 01:46:48,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:48,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:49,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:49,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185072632] [2024-06-28 01:46:49,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185072632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:49,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:49,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:49,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989407024] [2024-06-28 01:46:49,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:49,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:49,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:49,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:49,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:49,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:49,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 445 transitions, 7936 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:49,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:49,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:49,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:50,052 INFO L124 PetriNetUnfolderBase]: 2010/3440 cut-off events. [2024-06-28 01:46:50,052 INFO L125 PetriNetUnfolderBase]: For 186371/186371 co-relation queries the response was YES. [2024-06-28 01:46:50,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28300 conditions, 3440 events. 2010/3440 cut-off events. For 186371/186371 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 20647 event pairs, 411 based on Foata normal form. 2/3243 useless extension candidates. Maximal degree in co-relation 28123. Up to 2077 conditions per place. [2024-06-28 01:46:50,211 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 285 selfloop transitions, 181 changer transitions 0/473 dead transitions. [2024-06-28 01:46:50,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 473 transitions, 9630 flow [2024-06-28 01:46:50,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:50,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:50,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:46:50,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:46:50,212 INFO L175 Difference]: Start difference. First operand has 377 places, 445 transitions, 7936 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:46:50,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 473 transitions, 9630 flow [2024-06-28 01:46:51,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 473 transitions, 9530 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:51,269 INFO L231 Difference]: Finished difference. Result has 380 places, 447 transitions, 8272 flow [2024-06-28 01:46:51,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7836, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8272, PETRI_PLACES=380, PETRI_TRANSITIONS=447} [2024-06-28 01:46:51,269 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 339 predicate places. [2024-06-28 01:46:51,270 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 447 transitions, 8272 flow [2024-06-28 01:46:51,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:51,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:51,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:51,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 01:46:51,270 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:51,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:51,271 INFO L85 PathProgramCache]: Analyzing trace with hash -880828640, now seen corresponding path program 19 times [2024-06-28 01:46:51,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:51,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453964784] [2024-06-28 01:46:51,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:51,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:52,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:52,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453964784] [2024-06-28 01:46:52,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453964784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:52,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:52,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:52,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188791135] [2024-06-28 01:46:52,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:52,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:52,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:52,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:52,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:52,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:52,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 447 transitions, 8272 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:52,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:52,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:52,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:52,933 INFO L124 PetriNetUnfolderBase]: 2006/3433 cut-off events. [2024-06-28 01:46:52,933 INFO L125 PetriNetUnfolderBase]: For 182680/182680 co-relation queries the response was YES. [2024-06-28 01:46:52,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28499 conditions, 3433 events. 2006/3433 cut-off events. For 182680/182680 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 20649 event pairs, 402 based on Foata normal form. 2/3237 useless extension candidates. Maximal degree in co-relation 28321. Up to 2076 conditions per place. [2024-06-28 01:46:52,982 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 273 selfloop transitions, 193 changer transitions 0/473 dead transitions. [2024-06-28 01:46:52,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 473 transitions, 9907 flow [2024-06-28 01:46:52,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:52,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:52,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-28 01:46:52,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42997542997543 [2024-06-28 01:46:52,983 INFO L175 Difference]: Start difference. First operand has 380 places, 447 transitions, 8272 flow. Second operand 11 states and 175 transitions. [2024-06-28 01:46:52,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 473 transitions, 9907 flow [2024-06-28 01:46:54,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 473 transitions, 9508 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:54,200 INFO L231 Difference]: Finished difference. Result has 384 places, 448 transitions, 8295 flow [2024-06-28 01:46:54,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7873, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8295, PETRI_PLACES=384, PETRI_TRANSITIONS=448} [2024-06-28 01:46:54,200 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 343 predicate places. [2024-06-28 01:46:54,200 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 448 transitions, 8295 flow [2024-06-28 01:46:54,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:54,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:54,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:54,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 01:46:54,201 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:54,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:54,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1278281652, now seen corresponding path program 5 times [2024-06-28 01:46:54,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:54,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312239767] [2024-06-28 01:46:54,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:54,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:55,179 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 01:46:55,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:55,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312239767] [2024-06-28 01:46:55,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312239767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:55,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:55,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:55,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943447470] [2024-06-28 01:46:55,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:55,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:55,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:55,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:55,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:55,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:55,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 448 transitions, 8295 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:55,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:55,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:55,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:56,247 INFO L124 PetriNetUnfolderBase]: 2012/3451 cut-off events. [2024-06-28 01:46:56,247 INFO L125 PetriNetUnfolderBase]: For 181241/181241 co-relation queries the response was YES. [2024-06-28 01:46:56,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28586 conditions, 3451 events. 2012/3451 cut-off events. For 181241/181241 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 20865 event pairs, 682 based on Foata normal form. 1/3253 useless extension candidates. Maximal degree in co-relation 28407. Up to 3245 conditions per place. [2024-06-28 01:46:56,297 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 442 selfloop transitions, 23 changer transitions 0/472 dead transitions. [2024-06-28 01:46:56,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 472 transitions, 9577 flow [2024-06-28 01:46:56,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:56,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:56,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-28 01:46:56,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3808353808353808 [2024-06-28 01:46:56,298 INFO L175 Difference]: Start difference. First operand has 384 places, 448 transitions, 8295 flow. Second operand 11 states and 155 transitions. [2024-06-28 01:46:56,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 472 transitions, 9577 flow [2024-06-28 01:46:57,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 472 transitions, 9092 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-28 01:46:57,474 INFO L231 Difference]: Finished difference. Result has 386 places, 451 transitions, 7921 flow [2024-06-28 01:46:57,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7816, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7921, PETRI_PLACES=386, PETRI_TRANSITIONS=451} [2024-06-28 01:46:57,475 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 345 predicate places. [2024-06-28 01:46:57,475 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 451 transitions, 7921 flow [2024-06-28 01:46:57,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:57,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:57,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:57,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 01:46:57,475 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:57,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:57,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1275299686, now seen corresponding path program 6 times [2024-06-28 01:46:57,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:57,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414791272] [2024-06-28 01:46:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:57,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:58,553 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 01:46:58,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:58,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414791272] [2024-06-28 01:46:58,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414791272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:58,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:58,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:58,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559887922] [2024-06-28 01:46:58,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:58,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:58,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:58,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:58,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:58,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:58,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 451 transitions, 7921 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:58,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:58,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:58,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:59,549 INFO L124 PetriNetUnfolderBase]: 2008/3444 cut-off events. [2024-06-28 01:46:59,550 INFO L125 PetriNetUnfolderBase]: For 176072/176072 co-relation queries the response was YES. [2024-06-28 01:46:59,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27668 conditions, 3444 events. 2008/3444 cut-off events. For 176072/176072 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 20785 event pairs, 686 based on Foata normal form. 1/3246 useless extension candidates. Maximal degree in co-relation 27488. Up to 3275 conditions per place. [2024-06-28 01:46:59,601 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 444 selfloop transitions, 17 changer transitions 0/468 dead transitions. [2024-06-28 01:46:59,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 468 transitions, 8949 flow [2024-06-28 01:46:59,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:59,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:59,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 01:46:59,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37027027027027026 [2024-06-28 01:46:59,602 INFO L175 Difference]: Start difference. First operand has 386 places, 451 transitions, 7921 flow. Second operand 10 states and 137 transitions. [2024-06-28 01:46:59,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 468 transitions, 8949 flow [2024-06-28 01:47:00,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 468 transitions, 8899 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:00,769 INFO L231 Difference]: Finished difference. Result has 389 places, 452 transitions, 7928 flow [2024-06-28 01:47:00,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7872, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7928, PETRI_PLACES=389, PETRI_TRANSITIONS=452} [2024-06-28 01:47:00,770 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-28 01:47:00,770 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 452 transitions, 7928 flow [2024-06-28 01:47:00,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:00,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:00,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:00,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 01:47:00,770 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:00,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:00,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1265171676, now seen corresponding path program 20 times [2024-06-28 01:47:00,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:00,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033703801] [2024-06-28 01:47:00,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:00,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:01,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:01,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033703801] [2024-06-28 01:47:01,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033703801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:01,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:01,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:01,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904466780] [2024-06-28 01:47:01,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:01,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:01,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:01,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:01,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:01,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:01,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 452 transitions, 7928 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:01,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:01,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:01,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:02,509 INFO L124 PetriNetUnfolderBase]: 2019/3453 cut-off events. [2024-06-28 01:47:02,510 INFO L125 PetriNetUnfolderBase]: For 184224/184224 co-relation queries the response was YES. [2024-06-28 01:47:02,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27866 conditions, 3453 events. 2019/3453 cut-off events. For 184224/184224 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 20738 event pairs, 380 based on Foata normal form. 2/3254 useless extension candidates. Maximal degree in co-relation 27685. Up to 2080 conditions per place. [2024-06-28 01:47:02,558 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 259 selfloop transitions, 213 changer transitions 0/479 dead transitions. [2024-06-28 01:47:02,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 479 transitions, 9634 flow [2024-06-28 01:47:02,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:02,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:02,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:47:02,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-28 01:47:02,560 INFO L175 Difference]: Start difference. First operand has 389 places, 452 transitions, 7928 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:47:02,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 479 transitions, 9634 flow [2024-06-28 01:47:03,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 479 transitions, 9589 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:03,747 INFO L231 Difference]: Finished difference. Result has 391 places, 454 transitions, 8386 flow [2024-06-28 01:47:03,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7883, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8386, PETRI_PLACES=391, PETRI_TRANSITIONS=454} [2024-06-28 01:47:03,748 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 350 predicate places. [2024-06-28 01:47:03,748 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 454 transitions, 8386 flow [2024-06-28 01:47:03,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:03,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:03,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:03,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 01:47:03,748 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:03,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:03,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1265180046, now seen corresponding path program 21 times [2024-06-28 01:47:03,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:03,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395408207] [2024-06-28 01:47:03,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:03,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:04,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:04,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395408207] [2024-06-28 01:47:04,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395408207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:04,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:04,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:04,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911813084] [2024-06-28 01:47:04,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:04,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:04,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:04,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:04,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:04,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:04,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 454 transitions, 8386 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:04,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:04,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:04,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:05,436 INFO L124 PetriNetUnfolderBase]: 2013/3444 cut-off events. [2024-06-28 01:47:05,437 INFO L125 PetriNetUnfolderBase]: For 181602/181602 co-relation queries the response was YES. [2024-06-28 01:47:05,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28204 conditions, 3444 events. 2013/3444 cut-off events. For 181602/181602 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 20694 event pairs, 382 based on Foata normal form. 4/3248 useless extension candidates. Maximal degree in co-relation 28022. Up to 2079 conditions per place. [2024-06-28 01:47:05,485 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 264 selfloop transitions, 208 changer transitions 0/479 dead transitions. [2024-06-28 01:47:05,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 479 transitions, 10026 flow [2024-06-28 01:47:05,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:05,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:47:05,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-28 01:47:05,487 INFO L175 Difference]: Start difference. First operand has 391 places, 454 transitions, 8386 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:47:05,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 479 transitions, 10026 flow [2024-06-28 01:47:06,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 479 transitions, 9459 flow, removed 59 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:06,681 INFO L231 Difference]: Finished difference. Result has 392 places, 454 transitions, 8242 flow [2024-06-28 01:47:06,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7819, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8242, PETRI_PLACES=392, PETRI_TRANSITIONS=454} [2024-06-28 01:47:06,681 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 351 predicate places. [2024-06-28 01:47:06,681 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 454 transitions, 8242 flow [2024-06-28 01:47:06,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:06,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:06,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:06,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 01:47:06,682 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:06,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:06,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1265180356, now seen corresponding path program 7 times [2024-06-28 01:47:06,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:06,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262380905] [2024-06-28 01:47:06,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:06,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:07,620 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 01:47:07,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:07,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262380905] [2024-06-28 01:47:07,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262380905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:07,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:07,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:07,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548557764] [2024-06-28 01:47:07,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:07,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:07,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:07,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:07,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:07,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:07,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 454 transitions, 8242 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:07,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:07,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:07,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:08,617 INFO L124 PetriNetUnfolderBase]: 2009/3441 cut-off events. [2024-06-28 01:47:08,617 INFO L125 PetriNetUnfolderBase]: For 164917/164917 co-relation queries the response was YES. [2024-06-28 01:47:08,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27706 conditions, 3441 events. 2009/3441 cut-off events. For 164917/164917 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 20696 event pairs, 560 based on Foata normal form. 1/3240 useless extension candidates. Maximal degree in co-relation 27524. Up to 3174 conditions per place. [2024-06-28 01:47:08,663 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 409 selfloop transitions, 55 changer transitions 0/471 dead transitions. [2024-06-28 01:47:08,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 471 transitions, 9276 flow [2024-06-28 01:47:08,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:08,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:08,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-28 01:47:08,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3864864864864865 [2024-06-28 01:47:08,664 INFO L175 Difference]: Start difference. First operand has 392 places, 454 transitions, 8242 flow. Second operand 10 states and 143 transitions. [2024-06-28 01:47:08,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 471 transitions, 9276 flow [2024-06-28 01:47:09,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 471 transitions, 8827 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:09,724 INFO L231 Difference]: Finished difference. Result has 393 places, 455 transitions, 7926 flow [2024-06-28 01:47:09,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7796, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7926, PETRI_PLACES=393, PETRI_TRANSITIONS=455} [2024-06-28 01:47:09,724 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 352 predicate places. [2024-06-28 01:47:09,724 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 455 transitions, 7926 flow [2024-06-28 01:47:09,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:09,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:09,725 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 01:47:09,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 01:47:09,725 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:09,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:09,725 INFO L85 PathProgramCache]: Analyzing trace with hash 882990444, now seen corresponding path program 1 times [2024-06-28 01:47:09,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:09,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145512899] [2024-06-28 01:47:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:09,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:10,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:10,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145512899] [2024-06-28 01:47:10,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145512899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:10,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:10,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:10,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068478401] [2024-06-28 01:47:10,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:10,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:10,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:10,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:10,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:10,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:10,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 455 transitions, 7926 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:10,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:10,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:10,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:11,559 INFO L124 PetriNetUnfolderBase]: 2024/3466 cut-off events. [2024-06-28 01:47:11,559 INFO L125 PetriNetUnfolderBase]: For 169786/169786 co-relation queries the response was YES. [2024-06-28 01:47:11,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27220 conditions, 3466 events. 2024/3466 cut-off events. For 169786/169786 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 20872 event pairs, 360 based on Foata normal form. 2/3269 useless extension candidates. Maximal degree in co-relation 27038. Up to 3044 conditions per place. [2024-06-28 01:47:11,612 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 424 selfloop transitions, 61 changer transitions 0/492 dead transitions. [2024-06-28 01:47:11,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 492 transitions, 9152 flow [2024-06-28 01:47:11,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:11,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 01:47:11,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-28 01:47:11,613 INFO L175 Difference]: Start difference. First operand has 393 places, 455 transitions, 7926 flow. Second operand 11 states and 170 transitions. [2024-06-28 01:47:11,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 492 transitions, 9152 flow [2024-06-28 01:47:12,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 492 transitions, 9029 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:12,844 INFO L231 Difference]: Finished difference. Result has 396 places, 457 transitions, 8014 flow [2024-06-28 01:47:12,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7803, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8014, PETRI_PLACES=396, PETRI_TRANSITIONS=457} [2024-06-28 01:47:12,845 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 355 predicate places. [2024-06-28 01:47:12,845 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 457 transitions, 8014 flow [2024-06-28 01:47:12,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:12,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:12,846 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 01:47:12,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 01:47:12,847 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:12,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:12,848 INFO L85 PathProgramCache]: Analyzing trace with hash -416933492, now seen corresponding path program 2 times [2024-06-28 01:47:12,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:12,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418226985] [2024-06-28 01:47:12,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:12,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:13,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:13,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:13,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418226985] [2024-06-28 01:47:13,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418226985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:13,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:13,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:13,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509565104] [2024-06-28 01:47:13,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:13,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:13,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:13,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:13,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:13,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:13,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 457 transitions, 8014 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:13,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:13,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:13,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:14,723 INFO L124 PetriNetUnfolderBase]: 2049/3507 cut-off events. [2024-06-28 01:47:14,723 INFO L125 PetriNetUnfolderBase]: For 175334/175334 co-relation queries the response was YES. [2024-06-28 01:47:14,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27721 conditions, 3507 events. 2049/3507 cut-off events. For 175334/175334 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 21218 event pairs, 502 based on Foata normal form. 2/3310 useless extension candidates. Maximal degree in co-relation 27538. Up to 3128 conditions per place. [2024-06-28 01:47:14,774 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 429 selfloop transitions, 59 changer transitions 0/495 dead transitions. [2024-06-28 01:47:14,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 495 transitions, 9328 flow [2024-06-28 01:47:14,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:14,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:14,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 01:47:14,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-28 01:47:14,778 INFO L175 Difference]: Start difference. First operand has 396 places, 457 transitions, 8014 flow. Second operand 11 states and 170 transitions. [2024-06-28 01:47:14,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 495 transitions, 9328 flow [2024-06-28 01:47:16,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 495 transitions, 9059 flow, removed 74 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:16,066 INFO L231 Difference]: Finished difference. Result has 398 places, 461 transitions, 8048 flow [2024-06-28 01:47:16,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7823, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8048, PETRI_PLACES=398, PETRI_TRANSITIONS=461} [2024-06-28 01:47:16,068 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 357 predicate places. [2024-06-28 01:47:16,068 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 461 transitions, 8048 flow [2024-06-28 01:47:16,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:16,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:16,069 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 01:47:16,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 01:47:16,070 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:16,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:16,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1406419858, now seen corresponding path program 3 times [2024-06-28 01:47:16,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:16,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632759710] [2024-06-28 01:47:16,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:16,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:17,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:17,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:17,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632759710] [2024-06-28 01:47:17,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632759710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:17,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:17,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:17,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779152779] [2024-06-28 01:47:17,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:17,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:17,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:17,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:17,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:17,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:17,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 461 transitions, 8048 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:17,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:17,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:17,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:18,194 INFO L124 PetriNetUnfolderBase]: 2084/3573 cut-off events. [2024-06-28 01:47:18,194 INFO L125 PetriNetUnfolderBase]: For 190322/190322 co-relation queries the response was YES. [2024-06-28 01:47:18,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28298 conditions, 3573 events. 2084/3573 cut-off events. For 190322/190322 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 21715 event pairs, 532 based on Foata normal form. 2/3377 useless extension candidates. Maximal degree in co-relation 28114. Up to 3194 conditions per place. [2024-06-28 01:47:18,245 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 414 selfloop transitions, 75 changer transitions 0/496 dead transitions. [2024-06-28 01:47:18,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 496 transitions, 9552 flow [2024-06-28 01:47:18,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:18,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:18,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-28 01:47:18,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-28 01:47:18,247 INFO L175 Difference]: Start difference. First operand has 398 places, 461 transitions, 8048 flow. Second operand 11 states and 169 transitions. [2024-06-28 01:47:18,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 496 transitions, 9552 flow [2024-06-28 01:47:19,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 496 transitions, 9367 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:19,562 INFO L231 Difference]: Finished difference. Result has 400 places, 465 transitions, 8195 flow [2024-06-28 01:47:19,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7863, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8195, PETRI_PLACES=400, PETRI_TRANSITIONS=465} [2024-06-28 01:47:19,562 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 359 predicate places. [2024-06-28 01:47:19,563 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 465 transitions, 8195 flow [2024-06-28 01:47:19,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:19,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:19,563 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 01:47:19,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 01:47:19,563 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:19,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:19,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1416614735, now seen corresponding path program 1 times [2024-06-28 01:47:19,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:19,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251452072] [2024-06-28 01:47:19,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:19,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:20,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:20,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251452072] [2024-06-28 01:47:20,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251452072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:20,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:20,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:20,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10050826] [2024-06-28 01:47:20,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:20,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:20,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:20,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:20,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:20,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:20,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 465 transitions, 8195 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:20,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:20,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:20,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:21,369 INFO L124 PetriNetUnfolderBase]: 2092/3586 cut-off events. [2024-06-28 01:47:21,369 INFO L125 PetriNetUnfolderBase]: For 188896/188896 co-relation queries the response was YES. [2024-06-28 01:47:21,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28497 conditions, 3586 events. 2092/3586 cut-off events. For 188896/188896 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 21766 event pairs, 546 based on Foata normal form. 1/3387 useless extension candidates. Maximal degree in co-relation 28312. Up to 3285 conditions per place. [2024-06-28 01:47:21,421 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 406 selfloop transitions, 81 changer transitions 0/494 dead transitions. [2024-06-28 01:47:21,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 494 transitions, 9421 flow [2024-06-28 01:47:21,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:21,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:21,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-28 01:47:21,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39803439803439805 [2024-06-28 01:47:21,422 INFO L175 Difference]: Start difference. First operand has 400 places, 465 transitions, 8195 flow. Second operand 11 states and 162 transitions. [2024-06-28 01:47:21,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 494 transitions, 9421 flow [2024-06-28 01:47:22,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 494 transitions, 9231 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:22,837 INFO L231 Difference]: Finished difference. Result has 404 places, 468 transitions, 8309 flow [2024-06-28 01:47:22,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8005, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8309, PETRI_PLACES=404, PETRI_TRANSITIONS=468} [2024-06-28 01:47:22,837 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 363 predicate places. [2024-06-28 01:47:22,837 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 468 transitions, 8309 flow [2024-06-28 01:47:22,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:22,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:22,838 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 01:47:22,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 01:47:22,838 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:22,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:22,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1416608008, now seen corresponding path program 4 times [2024-06-28 01:47:22,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:22,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771063980] [2024-06-28 01:47:22,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:22,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:23,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:23,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771063980] [2024-06-28 01:47:23,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771063980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:23,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:23,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:23,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058528851] [2024-06-28 01:47:23,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:23,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:23,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:23,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:23,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:23,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:23,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 468 transitions, 8309 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:23,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:23,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:23,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:24,824 INFO L124 PetriNetUnfolderBase]: 2089/3581 cut-off events. [2024-06-28 01:47:24,824 INFO L125 PetriNetUnfolderBase]: For 185539/185539 co-relation queries the response was YES. [2024-06-28 01:47:24,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28298 conditions, 3581 events. 2089/3581 cut-off events. For 185539/185539 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 21758 event pairs, 547 based on Foata normal form. 2/3382 useless extension candidates. Maximal degree in co-relation 28111. Up to 3276 conditions per place. [2024-06-28 01:47:24,872 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 414 selfloop transitions, 75 changer transitions 0/496 dead transitions. [2024-06-28 01:47:24,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 496 transitions, 9431 flow [2024-06-28 01:47:24,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:24,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:24,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-28 01:47:24,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40294840294840295 [2024-06-28 01:47:24,873 INFO L175 Difference]: Start difference. First operand has 404 places, 468 transitions, 8309 flow. Second operand 11 states and 164 transitions. [2024-06-28 01:47:24,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 496 transitions, 9431 flow [2024-06-28 01:47:26,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 496 transitions, 9143 flow, removed 61 selfloop flow, removed 10 redundant places. [2024-06-28 01:47:26,168 INFO L231 Difference]: Finished difference. Result has 405 places, 468 transitions, 8181 flow [2024-06-28 01:47:26,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8021, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8181, PETRI_PLACES=405, PETRI_TRANSITIONS=468} [2024-06-28 01:47:26,169 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 364 predicate places. [2024-06-28 01:47:26,169 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 468 transitions, 8181 flow [2024-06-28 01:47:26,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:26,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:26,169 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 01:47:26,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 01:47:26,169 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:26,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:26,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1411638088, now seen corresponding path program 5 times [2024-06-28 01:47:26,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:26,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752668729] [2024-06-28 01:47:26,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:26,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:26,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:26,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752668729] [2024-06-28 01:47:26,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752668729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:26,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:26,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:26,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4756538] [2024-06-28 01:47:26,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:26,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:26,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:26,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:26,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:26,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:26,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 468 transitions, 8181 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:26,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:26,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:26,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:27,972 INFO L124 PetriNetUnfolderBase]: 2105/3607 cut-off events. [2024-06-28 01:47:27,973 INFO L125 PetriNetUnfolderBase]: For 187794/187794 co-relation queries the response was YES. [2024-06-28 01:47:28,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28351 conditions, 3607 events. 2105/3607 cut-off events. For 187794/187794 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 21951 event pairs, 523 based on Foata normal form. 2/3407 useless extension candidates. Maximal degree in co-relation 28163. Up to 3118 conditions per place. [2024-06-28 01:47:28,026 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 418 selfloop transitions, 77 changer transitions 0/502 dead transitions. [2024-06-28 01:47:28,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 502 transitions, 9429 flow [2024-06-28 01:47:28,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:28,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:28,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 01:47:28,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-28 01:47:28,028 INFO L175 Difference]: Start difference. First operand has 405 places, 468 transitions, 8181 flow. Second operand 11 states and 172 transitions. [2024-06-28 01:47:28,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 502 transitions, 9429 flow [2024-06-28 01:47:29,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 502 transitions, 9263 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 01:47:29,481 INFO L231 Difference]: Finished difference. Result has 406 places, 470 transitions, 8269 flow [2024-06-28 01:47:29,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8015, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8269, PETRI_PLACES=406, PETRI_TRANSITIONS=470} [2024-06-28 01:47:29,482 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 365 predicate places. [2024-06-28 01:47:29,482 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 470 transitions, 8269 flow [2024-06-28 01:47:29,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:29,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:29,482 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 01:47:29,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 01:47:29,482 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:29,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:29,482 INFO L85 PathProgramCache]: Analyzing trace with hash 614653214, now seen corresponding path program 6 times [2024-06-28 01:47:29,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:29,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807449319] [2024-06-28 01:47:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:29,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:30,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:30,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:30,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807449319] [2024-06-28 01:47:30,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807449319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:30,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:30,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:30,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873006276] [2024-06-28 01:47:30,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:30,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:30,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:30,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:30,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:30,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:30,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 470 transitions, 8269 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:30,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:30,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:30,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:31,415 INFO L124 PetriNetUnfolderBase]: 2140/3663 cut-off events. [2024-06-28 01:47:31,415 INFO L125 PetriNetUnfolderBase]: For 192845/192845 co-relation queries the response was YES. [2024-06-28 01:47:31,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28840 conditions, 3663 events. 2140/3663 cut-off events. For 192845/192845 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 22353 event pairs, 476 based on Foata normal form. 2/3462 useless extension candidates. Maximal degree in co-relation 28651. Up to 3277 conditions per place. [2024-06-28 01:47:31,468 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 442 selfloop transitions, 59 changer transitions 0/508 dead transitions. [2024-06-28 01:47:31,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 508 transitions, 9547 flow [2024-06-28 01:47:31,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:31,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 01:47:31,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-28 01:47:31,470 INFO L175 Difference]: Start difference. First operand has 406 places, 470 transitions, 8269 flow. Second operand 11 states and 171 transitions. [2024-06-28 01:47:31,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 508 transitions, 9547 flow [2024-06-28 01:47:32,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 508 transitions, 9311 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:32,627 INFO L231 Difference]: Finished difference. Result has 408 places, 476 transitions, 8292 flow [2024-06-28 01:47:32,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8033, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8292, PETRI_PLACES=408, PETRI_TRANSITIONS=476} [2024-06-28 01:47:32,627 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 367 predicate places. [2024-06-28 01:47:32,628 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 476 transitions, 8292 flow [2024-06-28 01:47:32,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:32,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:32,628 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 01:47:32,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 01:47:32,628 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:32,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:32,628 INFO L85 PathProgramCache]: Analyzing trace with hash -255792304, now seen corresponding path program 7 times [2024-06-28 01:47:32,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:32,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867835523] [2024-06-28 01:47:32,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:32,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:33,593 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 01:47:33,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:33,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867835523] [2024-06-28 01:47:33,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867835523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:33,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:33,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:33,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153531974] [2024-06-28 01:47:33,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:33,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:33,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:33,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:33,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:33,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:33,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 476 transitions, 8292 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:33,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:33,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:33,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:34,757 INFO L124 PetriNetUnfolderBase]: 2205/3780 cut-off events. [2024-06-28 01:47:34,757 INFO L125 PetriNetUnfolderBase]: For 209945/209945 co-relation queries the response was YES. [2024-06-28 01:47:34,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29762 conditions, 3780 events. 2205/3780 cut-off events. For 209945/209945 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 23298 event pairs, 537 based on Foata normal form. 2/3582 useless extension candidates. Maximal degree in co-relation 29572. Up to 3281 conditions per place. [2024-06-28 01:47:34,815 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 431 selfloop transitions, 79 changer transitions 0/517 dead transitions. [2024-06-28 01:47:34,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 517 transitions, 9900 flow [2024-06-28 01:47:34,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:34,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:34,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 01:47:34,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-28 01:47:34,817 INFO L175 Difference]: Start difference. First operand has 408 places, 476 transitions, 8292 flow. Second operand 11 states and 174 transitions. [2024-06-28 01:47:34,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 517 transitions, 9900 flow [2024-06-28 01:47:36,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 517 transitions, 9709 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:36,125 INFO L231 Difference]: Finished difference. Result has 411 places, 486 transitions, 8537 flow [2024-06-28 01:47:36,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8101, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8537, PETRI_PLACES=411, PETRI_TRANSITIONS=486} [2024-06-28 01:47:36,126 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 370 predicate places. [2024-06-28 01:47:36,126 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 486 transitions, 8537 flow [2024-06-28 01:47:36,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:36,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:36,126 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 01:47:36,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 01:47:36,127 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:36,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:36,127 INFO L85 PathProgramCache]: Analyzing trace with hash -863160718, now seen corresponding path program 8 times [2024-06-28 01:47:36,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:36,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959994101] [2024-06-28 01:47:36,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:36,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:37,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:37,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:37,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959994101] [2024-06-28 01:47:37,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959994101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:37,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:37,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:37,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842951933] [2024-06-28 01:47:37,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:37,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:37,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:37,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:37,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:37,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:37,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 486 transitions, 8537 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:37,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:37,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:37,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:38,233 INFO L124 PetriNetUnfolderBase]: 2221/3809 cut-off events. [2024-06-28 01:47:38,234 INFO L125 PetriNetUnfolderBase]: For 215017/215017 co-relation queries the response was YES. [2024-06-28 01:47:38,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30187 conditions, 3809 events. 2221/3809 cut-off events. For 215017/215017 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 23510 event pairs, 547 based on Foata normal form. 2/3609 useless extension candidates. Maximal degree in co-relation 29995. Up to 3417 conditions per place. [2024-06-28 01:47:38,290 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 433 selfloop transitions, 77 changer transitions 0/517 dead transitions. [2024-06-28 01:47:38,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 517 transitions, 10015 flow [2024-06-28 01:47:38,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:38,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:38,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 01:47:38,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-28 01:47:38,292 INFO L175 Difference]: Start difference. First operand has 411 places, 486 transitions, 8537 flow. Second operand 11 states and 170 transitions. [2024-06-28 01:47:38,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 517 transitions, 10015 flow [2024-06-28 01:47:39,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 517 transitions, 9811 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:39,593 INFO L231 Difference]: Finished difference. Result has 415 places, 488 transitions, 8599 flow [2024-06-28 01:47:39,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8349, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8599, PETRI_PLACES=415, PETRI_TRANSITIONS=488} [2024-06-28 01:47:39,593 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 374 predicate places. [2024-06-28 01:47:39,593 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 488 transitions, 8599 flow [2024-06-28 01:47:39,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:39,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:39,594 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 01:47:39,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 01:47:39,594 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:39,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:39,594 INFO L85 PathProgramCache]: Analyzing trace with hash 673789124, now seen corresponding path program 9 times [2024-06-28 01:47:39,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:39,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128824836] [2024-06-28 01:47:39,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:39,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:40,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:40,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:40,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128824836] [2024-06-28 01:47:40,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128824836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:40,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:40,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:40,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830670239] [2024-06-28 01:47:40,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:40,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:40,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:40,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:40,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:40,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:40,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 488 transitions, 8599 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:40,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:40,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:40,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:41,687 INFO L124 PetriNetUnfolderBase]: 2218/3804 cut-off events. [2024-06-28 01:47:41,687 INFO L125 PetriNetUnfolderBase]: For 204353/204353 co-relation queries the response was YES. [2024-06-28 01:47:41,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29910 conditions, 3804 events. 2218/3804 cut-off events. For 204353/204353 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 23472 event pairs, 564 based on Foata normal form. 2/3602 useless extension candidates. Maximal degree in co-relation 29716. Up to 3495 conditions per place. [2024-06-28 01:47:41,740 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 432 selfloop transitions, 75 changer transitions 0/514 dead transitions. [2024-06-28 01:47:41,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 514 transitions, 9745 flow [2024-06-28 01:47:41,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:41,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:41,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-28 01:47:41,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-28 01:47:41,741 INFO L175 Difference]: Start difference. First operand has 415 places, 488 transitions, 8599 flow. Second operand 11 states and 165 transitions. [2024-06-28 01:47:41,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 514 transitions, 9745 flow [2024-06-28 01:47:43,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 514 transitions, 9443 flow, removed 71 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:43,045 INFO L231 Difference]: Finished difference. Result has 417 places, 488 transitions, 8459 flow [2024-06-28 01:47:43,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8297, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8459, PETRI_PLACES=417, PETRI_TRANSITIONS=488} [2024-06-28 01:47:43,060 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 376 predicate places. [2024-06-28 01:47:43,060 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 488 transitions, 8459 flow [2024-06-28 01:47:43,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:43,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:43,061 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 01:47:43,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 01:47:43,061 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:43,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:43,061 INFO L85 PathProgramCache]: Analyzing trace with hash -863154921, now seen corresponding path program 2 times [2024-06-28 01:47:43,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:43,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62328395] [2024-06-28 01:47:43,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:43,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:43,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:43,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62328395] [2024-06-28 01:47:43,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62328395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:43,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:43,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:43,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365219441] [2024-06-28 01:47:43,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:43,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:43,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:43,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:43,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:43,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:43,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 488 transitions, 8459 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:43,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:43,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:43,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:44,985 INFO L124 PetriNetUnfolderBase]: 2217/3802 cut-off events. [2024-06-28 01:47:44,986 INFO L125 PetriNetUnfolderBase]: For 192434/192434 co-relation queries the response was YES. [2024-06-28 01:47:45,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29495 conditions, 3802 events. 2217/3802 cut-off events. For 192434/192434 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 23437 event pairs, 564 based on Foata normal form. 1/3596 useless extension candidates. Maximal degree in co-relation 29300. Up to 3505 conditions per place. [2024-06-28 01:47:45,046 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 427 selfloop transitions, 81 changer transitions 0/515 dead transitions. [2024-06-28 01:47:45,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 515 transitions, 9666 flow [2024-06-28 01:47:45,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:45,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-28 01:47:45,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004914004914005 [2024-06-28 01:47:45,048 INFO L175 Difference]: Start difference. First operand has 417 places, 488 transitions, 8459 flow. Second operand 11 states and 163 transitions. [2024-06-28 01:47:45,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 515 transitions, 9666 flow [2024-06-28 01:47:46,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 515 transitions, 9474 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:46,501 INFO L231 Difference]: Finished difference. Result has 419 places, 491 transitions, 8524 flow [2024-06-28 01:47:46,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8267, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8524, PETRI_PLACES=419, PETRI_TRANSITIONS=491} [2024-06-28 01:47:46,501 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2024-06-28 01:47:46,501 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 491 transitions, 8524 flow [2024-06-28 01:47:46,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:46,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:46,503 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 01:47:46,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 01:47:46,503 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:46,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:46,504 INFO L85 PathProgramCache]: Analyzing trace with hash -714833788, now seen corresponding path program 10 times [2024-06-28 01:47:46,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:46,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361951652] [2024-06-28 01:47:46,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:46,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:47,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:47,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:47,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361951652] [2024-06-28 01:47:47,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361951652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:47,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:47,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:47,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405003375] [2024-06-28 01:47:47,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:47,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:47,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:47,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:47,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:47,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:47,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 491 transitions, 8524 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:47,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:47,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:47,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:48,555 INFO L124 PetriNetUnfolderBase]: 2233/3832 cut-off events. [2024-06-28 01:47:48,556 INFO L125 PetriNetUnfolderBase]: For 203353/203353 co-relation queries the response was YES. [2024-06-28 01:47:48,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29795 conditions, 3832 events. 2233/3832 cut-off events. For 203353/203353 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 23658 event pairs, 534 based on Foata normal form. 2/3627 useless extension candidates. Maximal degree in co-relation 29599. Up to 3375 conditions per place. [2024-06-28 01:47:48,615 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 386 selfloop transitions, 127 changer transitions 0/520 dead transitions. [2024-06-28 01:47:48,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 520 transitions, 9796 flow [2024-06-28 01:47:48,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:48,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-28 01:47:48,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103194103194103 [2024-06-28 01:47:48,617 INFO L175 Difference]: Start difference. First operand has 419 places, 491 transitions, 8524 flow. Second operand 11 states and 167 transitions. [2024-06-28 01:47:48,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 520 transitions, 9796 flow [2024-06-28 01:47:50,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 520 transitions, 9632 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:50,022 INFO L231 Difference]: Finished difference. Result has 421 places, 493 transitions, 8726 flow [2024-06-28 01:47:50,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8360, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8726, PETRI_PLACES=421, PETRI_TRANSITIONS=493} [2024-06-28 01:47:50,023 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 380 predicate places. [2024-06-28 01:47:50,023 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 493 transitions, 8726 flow [2024-06-28 01:47:50,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:50,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:50,024 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 01:47:50,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 01:47:50,024 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:50,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:50,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2043466293, now seen corresponding path program 1 times [2024-06-28 01:47:50,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:50,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782254402] [2024-06-28 01:47:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:50,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:50,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:50,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:50,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782254402] [2024-06-28 01:47:50,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782254402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:50,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:50,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:50,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778655374] [2024-06-28 01:47:50,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:50,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:50,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:50,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:50,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:51,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:51,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 493 transitions, 8726 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:51,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:51,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:51,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:52,093 INFO L124 PetriNetUnfolderBase]: 2317/3990 cut-off events. [2024-06-28 01:47:52,094 INFO L125 PetriNetUnfolderBase]: For 274707/274707 co-relation queries the response was YES. [2024-06-28 01:47:52,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31326 conditions, 3990 events. 2317/3990 cut-off events. For 274707/274707 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 24897 event pairs, 569 based on Foata normal form. 12/3794 useless extension candidates. Maximal degree in co-relation 31129. Up to 3208 conditions per place. [2024-06-28 01:47:52,156 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 356 selfloop transitions, 166 changer transitions 0/529 dead transitions. [2024-06-28 01:47:52,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 529 transitions, 10092 flow [2024-06-28 01:47:52,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:47:52,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:47:52,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-28 01:47:52,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 01:47:52,157 INFO L175 Difference]: Start difference. First operand has 421 places, 493 transitions, 8726 flow. Second operand 12 states and 186 transitions. [2024-06-28 01:47:52,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 529 transitions, 10092 flow [2024-06-28 01:47:53,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 529 transitions, 9744 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:53,502 INFO L231 Difference]: Finished difference. Result has 424 places, 495 transitions, 8838 flow [2024-06-28 01:47:53,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8378, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8838, PETRI_PLACES=424, PETRI_TRANSITIONS=495} [2024-06-28 01:47:53,503 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 383 predicate places. [2024-06-28 01:47:53,503 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 495 transitions, 8838 flow [2024-06-28 01:47:53,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:53,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:53,503 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 01:47:53,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 01:47:53,503 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:53,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:53,504 INFO L85 PathProgramCache]: Analyzing trace with hash -722185438, now seen corresponding path program 11 times [2024-06-28 01:47:53,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:53,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611251105] [2024-06-28 01:47:53,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:53,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:54,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:54,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:54,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611251105] [2024-06-28 01:47:54,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611251105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:54,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:54,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:54,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207857453] [2024-06-28 01:47:54,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:54,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:54,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:54,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:54,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:54,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:54,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 495 transitions, 8838 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:54,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:54,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:54,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:55,684 INFO L124 PetriNetUnfolderBase]: 2333/4020 cut-off events. [2024-06-28 01:47:55,685 INFO L125 PetriNetUnfolderBase]: For 223234/223234 co-relation queries the response was YES. [2024-06-28 01:47:55,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31665 conditions, 4020 events. 2333/4020 cut-off events. For 223234/223234 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 25187 event pairs, 584 based on Foata normal form. 2/3814 useless extension candidates. Maximal degree in co-relation 31467. Up to 3559 conditions per place. [2024-06-28 01:47:55,746 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 402 selfloop transitions, 115 changer transitions 0/524 dead transitions. [2024-06-28 01:47:55,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 524 transitions, 10124 flow [2024-06-28 01:47:55,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:55,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:55,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-28 01:47:55,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41277641277641275 [2024-06-28 01:47:55,747 INFO L175 Difference]: Start difference. First operand has 424 places, 495 transitions, 8838 flow. Second operand 11 states and 168 transitions. [2024-06-28 01:47:55,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 524 transitions, 10124 flow [2024-06-28 01:47:57,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 524 transitions, 9536 flow, removed 43 selfloop flow, removed 12 redundant places. [2024-06-28 01:47:57,160 INFO L231 Difference]: Finished difference. Result has 423 places, 497 transitions, 8598 flow [2024-06-28 01:47:57,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8250, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8598, PETRI_PLACES=423, PETRI_TRANSITIONS=497} [2024-06-28 01:47:57,161 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 382 predicate places. [2024-06-28 01:47:57,161 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 497 transitions, 8598 flow [2024-06-28 01:47:57,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:57,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:57,161 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 01:47:57,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 01:47:57,162 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:57,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:57,162 INFO L85 PathProgramCache]: Analyzing trace with hash -722191018, now seen corresponding path program 12 times [2024-06-28 01:47:57,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:57,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944573478] [2024-06-28 01:47:57,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:57,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:57,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:57,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944573478] [2024-06-28 01:47:57,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944573478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:57,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:57,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:57,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163569224] [2024-06-28 01:47:57,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:57,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:57,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:57,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:57,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:58,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:58,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 497 transitions, 8598 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:58,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:58,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:58,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:59,255 INFO L124 PetriNetUnfolderBase]: 2349/4047 cut-off events. [2024-06-28 01:47:59,255 INFO L125 PetriNetUnfolderBase]: For 218275/218275 co-relation queries the response was YES. [2024-06-28 01:47:59,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31264 conditions, 4047 events. 2349/4047 cut-off events. For 218275/218275 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 25439 event pairs, 586 based on Foata normal form. 2/3842 useless extension candidates. Maximal degree in co-relation 31065. Up to 3521 conditions per place. [2024-06-28 01:47:59,318 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 402 selfloop transitions, 119 changer transitions 0/528 dead transitions. [2024-06-28 01:47:59,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 528 transitions, 9908 flow [2024-06-28 01:47:59,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:59,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:59,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 01:47:59,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-28 01:47:59,320 INFO L175 Difference]: Start difference. First operand has 423 places, 497 transitions, 8598 flow. Second operand 11 states and 171 transitions. [2024-06-28 01:47:59,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 528 transitions, 9908 flow [2024-06-28 01:48:00,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 528 transitions, 9578 flow, removed 52 selfloop flow, removed 9 redundant places. [2024-06-28 01:48:00,738 INFO L231 Difference]: Finished difference. Result has 425 places, 499 transitions, 8627 flow [2024-06-28 01:48:00,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8268, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8627, PETRI_PLACES=425, PETRI_TRANSITIONS=499} [2024-06-28 01:48:00,738 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 384 predicate places. [2024-06-28 01:48:00,738 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 499 transitions, 8627 flow [2024-06-28 01:48:00,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:00,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:00,739 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 01:48:00,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 01:48:00,739 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:00,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:00,739 INFO L85 PathProgramCache]: Analyzing trace with hash -921487228, now seen corresponding path program 13 times [2024-06-28 01:48:00,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:00,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683858867] [2024-06-28 01:48:00,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:00,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:01,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:01,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:01,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683858867] [2024-06-28 01:48:01,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683858867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:01,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:01,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:01,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475654520] [2024-06-28 01:48:01,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:01,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:01,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:01,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:01,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:01,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:01,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 499 transitions, 8627 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:01,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:01,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:01,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:02,927 INFO L124 PetriNetUnfolderBase]: 2365/4075 cut-off events. [2024-06-28 01:48:02,928 INFO L125 PetriNetUnfolderBase]: For 222699/222699 co-relation queries the response was YES. [2024-06-28 01:48:02,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31486 conditions, 4075 events. 2365/4075 cut-off events. For 222699/222699 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 25641 event pairs, 622 based on Foata normal form. 2/3868 useless extension candidates. Maximal degree in co-relation 31286. Up to 3615 conditions per place. [2024-06-28 01:48:02,986 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 416 selfloop transitions, 105 changer transitions 0/528 dead transitions. [2024-06-28 01:48:02,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 528 transitions, 9929 flow [2024-06-28 01:48:03,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:03,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:03,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-28 01:48:03,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-28 01:48:03,001 INFO L175 Difference]: Start difference. First operand has 425 places, 499 transitions, 8627 flow. Second operand 11 states and 169 transitions. [2024-06-28 01:48:03,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 528 transitions, 9929 flow [2024-06-28 01:48:04,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 528 transitions, 9586 flow, removed 54 selfloop flow, removed 9 redundant places. [2024-06-28 01:48:04,479 INFO L231 Difference]: Finished difference. Result has 427 places, 501 transitions, 8620 flow [2024-06-28 01:48:04,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8284, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8620, PETRI_PLACES=427, PETRI_TRANSITIONS=501} [2024-06-28 01:48:04,496 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 386 predicate places. [2024-06-28 01:48:04,496 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 501 transitions, 8620 flow [2024-06-28 01:48:04,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:04,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:04,497 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 01:48:04,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 01:48:04,497 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:04,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:04,497 INFO L85 PathProgramCache]: Analyzing trace with hash -921492808, now seen corresponding path program 14 times [2024-06-28 01:48:04,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:04,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524403328] [2024-06-28 01:48:04,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:04,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:05,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:05,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524403328] [2024-06-28 01:48:05,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524403328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:05,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:05,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:05,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805353083] [2024-06-28 01:48:05,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:05,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:05,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:05,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:05,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:05,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:05,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 501 transitions, 8620 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:05,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:05,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:05,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:06,946 INFO L124 PetriNetUnfolderBase]: 2381/4103 cut-off events. [2024-06-28 01:48:06,946 INFO L125 PetriNetUnfolderBase]: For 226811/226811 co-relation queries the response was YES. [2024-06-28 01:48:06,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31619 conditions, 4103 events. 2381/4103 cut-off events. For 226811/226811 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 25882 event pairs, 622 based on Foata normal form. 2/3897 useless extension candidates. Maximal degree in co-relation 31418. Up to 3597 conditions per place. [2024-06-28 01:48:07,004 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 418 selfloop transitions, 107 changer transitions 0/532 dead transitions. [2024-06-28 01:48:07,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 532 transitions, 9946 flow [2024-06-28 01:48:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:07,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 01:48:07,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-06-28 01:48:07,006 INFO L175 Difference]: Start difference. First operand has 427 places, 501 transitions, 8620 flow. Second operand 11 states and 173 transitions. [2024-06-28 01:48:07,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 532 transitions, 9946 flow [2024-06-28 01:48:08,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 532 transitions, 9628 flow, removed 56 selfloop flow, removed 9 redundant places. [2024-06-28 01:48:08,477 INFO L231 Difference]: Finished difference. Result has 429 places, 503 transitions, 8645 flow [2024-06-28 01:48:08,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8302, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8645, PETRI_PLACES=429, PETRI_TRANSITIONS=503} [2024-06-28 01:48:08,478 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 388 predicate places. [2024-06-28 01:48:08,478 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 503 transitions, 8645 flow [2024-06-28 01:48:08,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:08,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:08,478 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 01:48:08,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 01:48:08,478 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:08,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:08,479 INFO L85 PathProgramCache]: Analyzing trace with hash -921636958, now seen corresponding path program 15 times [2024-06-28 01:48:08,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:08,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825295393] [2024-06-28 01:48:08,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:08,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:09,310 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 01:48:09,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:09,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825295393] [2024-06-28 01:48:09,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825295393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:09,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:09,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:09,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860375375] [2024-06-28 01:48:09,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:09,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:09,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:09,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:09,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:09,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:09,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 503 transitions, 8645 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:09,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:09,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:09,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:10,754 INFO L124 PetriNetUnfolderBase]: 2397/4131 cut-off events. [2024-06-28 01:48:10,755 INFO L125 PetriNetUnfolderBase]: For 231435/231435 co-relation queries the response was YES. [2024-06-28 01:48:10,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31827 conditions, 4131 events. 2397/4131 cut-off events. For 231435/231435 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 26099 event pairs, 630 based on Foata normal form. 2/3930 useless extension candidates. Maximal degree in co-relation 31625. Up to 3451 conditions per place. [2024-06-28 01:48:10,809 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 410 selfloop transitions, 119 changer transitions 0/536 dead transitions. [2024-06-28 01:48:10,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 536 transitions, 9995 flow [2024-06-28 01:48:10,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:10,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:10,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-28 01:48:10,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42997542997543 [2024-06-28 01:48:10,811 INFO L175 Difference]: Start difference. First operand has 429 places, 503 transitions, 8645 flow. Second operand 11 states and 175 transitions. [2024-06-28 01:48:10,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 536 transitions, 9995 flow [2024-06-28 01:48:12,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 536 transitions, 9668 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-28 01:48:12,358 INFO L231 Difference]: Finished difference. Result has 431 places, 505 transitions, 8689 flow [2024-06-28 01:48:12,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8318, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8689, PETRI_PLACES=431, PETRI_TRANSITIONS=505} [2024-06-28 01:48:12,359 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 390 predicate places. [2024-06-28 01:48:12,359 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 505 transitions, 8689 flow [2024-06-28 01:48:12,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:12,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:12,360 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 01:48:12,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 01:48:12,360 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:12,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:12,360 INFO L85 PathProgramCache]: Analyzing trace with hash 398960442, now seen corresponding path program 16 times [2024-06-28 01:48:12,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:12,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921093067] [2024-06-28 01:48:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:12,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:13,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:13,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921093067] [2024-06-28 01:48:13,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921093067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:13,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:13,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:13,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757901945] [2024-06-28 01:48:13,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:13,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:13,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:13,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:13,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:13,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:13,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 505 transitions, 8689 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:13,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:13,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:13,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:14,384 INFO L124 PetriNetUnfolderBase]: 2413/4161 cut-off events. [2024-06-28 01:48:14,384 INFO L125 PetriNetUnfolderBase]: For 236295/236295 co-relation queries the response was YES. [2024-06-28 01:48:14,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32102 conditions, 4161 events. 2413/4161 cut-off events. For 236295/236295 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 26395 event pairs, 518 based on Foata normal form. 2/3955 useless extension candidates. Maximal degree in co-relation 31899. Up to 3444 conditions per place. [2024-06-28 01:48:14,449 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 444 selfloop transitions, 87 changer transitions 0/538 dead transitions. [2024-06-28 01:48:14,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 538 transitions, 10043 flow [2024-06-28 01:48:14,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:48:14,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:48:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 01:48:14,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 01:48:14,451 INFO L175 Difference]: Start difference. First operand has 431 places, 505 transitions, 8689 flow. Second operand 10 states and 155 transitions. [2024-06-28 01:48:14,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 538 transitions, 10043 flow [2024-06-28 01:48:16,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 538 transitions, 9688 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-28 01:48:16,231 INFO L231 Difference]: Finished difference. Result has 432 places, 507 transitions, 8663 flow [2024-06-28 01:48:16,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8334, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8663, PETRI_PLACES=432, PETRI_TRANSITIONS=507} [2024-06-28 01:48:16,232 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 391 predicate places. [2024-06-28 01:48:16,232 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 507 transitions, 8663 flow [2024-06-28 01:48:16,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:16,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:16,232 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 01:48:16,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 01:48:16,232 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:16,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:16,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1243313121, now seen corresponding path program 3 times [2024-06-28 01:48:16,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:16,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884817963] [2024-06-28 01:48:16,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:16,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:17,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:17,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884817963] [2024-06-28 01:48:17,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884817963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:17,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:17,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:17,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96660878] [2024-06-28 01:48:17,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:17,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:17,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:17,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:17,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:17,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:17,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 507 transitions, 8663 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:17,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:17,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:17,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:18,382 INFO L124 PetriNetUnfolderBase]: 2410/4161 cut-off events. [2024-06-28 01:48:18,382 INFO L125 PetriNetUnfolderBase]: For 223440/223440 co-relation queries the response was YES. [2024-06-28 01:48:18,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31803 conditions, 4161 events. 2410/4161 cut-off events. For 223440/223440 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 26412 event pairs, 698 based on Foata normal form. 1/3954 useless extension candidates. Maximal degree in co-relation 31599. Up to 3699 conditions per place. [2024-06-28 01:48:18,452 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 401 selfloop transitions, 123 changer transitions 0/531 dead transitions. [2024-06-28 01:48:18,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 531 transitions, 9837 flow [2024-06-28 01:48:18,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:48:18,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:48:18,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 01:48:18,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 01:48:18,453 INFO L175 Difference]: Start difference. First operand has 432 places, 507 transitions, 8663 flow. Second operand 10 states and 148 transitions. [2024-06-28 01:48:18,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 531 transitions, 9837 flow [2024-06-28 01:48:20,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 531 transitions, 9530 flow, removed 77 selfloop flow, removed 8 redundant places. [2024-06-28 01:48:20,236 INFO L231 Difference]: Finished difference. Result has 434 places, 507 transitions, 8636 flow [2024-06-28 01:48:20,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8356, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8636, PETRI_PLACES=434, PETRI_TRANSITIONS=507} [2024-06-28 01:48:20,237 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 393 predicate places. [2024-06-28 01:48:20,237 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 507 transitions, 8636 flow [2024-06-28 01:48:20,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:20,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:20,237 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 01:48:20,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 01:48:20,238 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:20,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:20,238 INFO L85 PathProgramCache]: Analyzing trace with hash 458096352, now seen corresponding path program 17 times [2024-06-28 01:48:20,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:20,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875048903] [2024-06-28 01:48:20,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:20,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:21,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:21,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875048903] [2024-06-28 01:48:21,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875048903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:21,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:21,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:21,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866439190] [2024-06-28 01:48:21,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:21,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:21,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:21,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:21,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:21,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:21,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 507 transitions, 8636 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:21,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:21,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:21,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:22,290 INFO L124 PetriNetUnfolderBase]: 2426/4189 cut-off events. [2024-06-28 01:48:22,290 INFO L125 PetriNetUnfolderBase]: For 221167/221167 co-relation queries the response was YES. [2024-06-28 01:48:22,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31805 conditions, 4189 events. 2426/4189 cut-off events. For 221167/221167 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 26626 event pairs, 707 based on Foata normal form. 2/3985 useless extension candidates. Maximal degree in co-relation 31600. Up to 3707 conditions per place. [2024-06-28 01:48:22,356 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 417 selfloop transitions, 111 changer transitions 0/535 dead transitions. [2024-06-28 01:48:22,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 535 transitions, 9950 flow [2024-06-28 01:48:22,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:48:22,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:48:22,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-28 01:48:22,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-28 01:48:22,358 INFO L175 Difference]: Start difference. First operand has 434 places, 507 transitions, 8636 flow. Second operand 10 states and 150 transitions. [2024-06-28 01:48:22,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 535 transitions, 9950 flow [2024-06-28 01:48:23,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 535 transitions, 9482 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-28 01:48:23,970 INFO L231 Difference]: Finished difference. Result has 433 places, 509 transitions, 8536 flow [2024-06-28 01:48:23,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8168, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8536, PETRI_PLACES=433, PETRI_TRANSITIONS=509} [2024-06-28 01:48:23,971 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 392 predicate places. [2024-06-28 01:48:23,971 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 509 transitions, 8536 flow [2024-06-28 01:48:23,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:23,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:23,971 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 01:48:23,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 01:48:23,971 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:23,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:23,972 INFO L85 PathProgramCache]: Analyzing trace with hash 457946622, now seen corresponding path program 18 times [2024-06-28 01:48:23,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:23,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399796519] [2024-06-28 01:48:23,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:23,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:24,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:24,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399796519] [2024-06-28 01:48:24,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399796519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:24,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:24,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:24,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751511221] [2024-06-28 01:48:24,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:24,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:24,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:24,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:24,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:25,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:25,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 509 transitions, 8536 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:25,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:25,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:25,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:26,274 INFO L124 PetriNetUnfolderBase]: 2461/4251 cut-off events. [2024-06-28 01:48:26,275 INFO L125 PetriNetUnfolderBase]: For 237826/237826 co-relation queries the response was YES. [2024-06-28 01:48:26,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32569 conditions, 4251 events. 2461/4251 cut-off events. For 237826/237826 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 27140 event pairs, 650 based on Foata normal form. 2/4042 useless extension candidates. Maximal degree in co-relation 32363. Up to 3311 conditions per place. [2024-06-28 01:48:26,342 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 414 selfloop transitions, 123 changer transitions 0/544 dead transitions. [2024-06-28 01:48:26,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 544 transitions, 10246 flow [2024-06-28 01:48:26,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:48:26,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:48:26,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 01:48:26,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-06-28 01:48:26,344 INFO L175 Difference]: Start difference. First operand has 433 places, 509 transitions, 8536 flow. Second operand 10 states and 159 transitions. [2024-06-28 01:48:26,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 544 transitions, 10246 flow [2024-06-28 01:48:27,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 544 transitions, 9908 flow, removed 58 selfloop flow, removed 10 redundant places. [2024-06-28 01:48:27,998 INFO L231 Difference]: Finished difference. Result has 433 places, 513 transitions, 8714 flow [2024-06-28 01:48:27,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8202, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8714, PETRI_PLACES=433, PETRI_TRANSITIONS=513} [2024-06-28 01:48:27,998 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 392 predicate places. [2024-06-28 01:48:27,998 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 513 transitions, 8714 flow [2024-06-28 01:48:27,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:27,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:27,999 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 01:48:27,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 01:48:27,999 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:27,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:27,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1548338208, now seen corresponding path program 19 times [2024-06-28 01:48:27,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:27,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008165650] [2024-06-28 01:48:28,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:28,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:28,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:28,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:28,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008165650] [2024-06-28 01:48:28,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008165650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:28,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:28,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:28,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907361175] [2024-06-28 01:48:28,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:28,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:28,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:28,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:28,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:28,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:28,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 513 transitions, 8714 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:28,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:28,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:28,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:30,270 INFO L124 PetriNetUnfolderBase]: 2458/4247 cut-off events. [2024-06-28 01:48:30,271 INFO L125 PetriNetUnfolderBase]: For 221693/221693 co-relation queries the response was YES. [2024-06-28 01:48:30,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32252 conditions, 4247 events. 2458/4247 cut-off events. For 221693/221693 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 27089 event pairs, 673 based on Foata normal form. 2/4045 useless extension candidates. Maximal degree in co-relation 32047. Up to 3583 conditions per place. [2024-06-28 01:48:30,336 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 419 selfloop transitions, 115 changer transitions 0/541 dead transitions. [2024-06-28 01:48:30,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 541 transitions, 9932 flow [2024-06-28 01:48:30,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:48:30,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:48:30,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 01:48:30,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-28 01:48:30,338 INFO L175 Difference]: Start difference. First operand has 433 places, 513 transitions, 8714 flow. Second operand 10 states and 154 transitions. [2024-06-28 01:48:30,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 541 transitions, 9932 flow [2024-06-28 01:48:32,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 541 transitions, 9600 flow, removed 111 selfloop flow, removed 6 redundant places. [2024-06-28 01:48:32,013 INFO L231 Difference]: Finished difference. Result has 437 places, 513 transitions, 8626 flow [2024-06-28 01:48:32,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8382, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8626, PETRI_PLACES=437, PETRI_TRANSITIONS=513} [2024-06-28 01:48:32,013 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 396 predicate places. [2024-06-28 01:48:32,014 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 513 transitions, 8626 flow [2024-06-28 01:48:32,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:32,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:32,014 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 01:48:32,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 01:48:32,014 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:32,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:32,014 INFO L85 PathProgramCache]: Analyzing trace with hash -351963448, now seen corresponding path program 20 times [2024-06-28 01:48:32,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:32,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934255614] [2024-06-28 01:48:32,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:32,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:33,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:33,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934255614] [2024-06-28 01:48:33,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934255614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:33,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:33,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:33,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232300788] [2024-06-28 01:48:33,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:33,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:33,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:33,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:33,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:33,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:33,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 513 transitions, 8626 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:33,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:33,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:33,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:34,602 INFO L124 PetriNetUnfolderBase]: 2474/4269 cut-off events. [2024-06-28 01:48:34,602 INFO L125 PetriNetUnfolderBase]: For 216009/216009 co-relation queries the response was YES. [2024-06-28 01:48:34,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32393 conditions, 4269 events. 2474/4269 cut-off events. For 216009/216009 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 27191 event pairs, 654 based on Foata normal form. 2/4061 useless extension candidates. Maximal degree in co-relation 32186. Up to 3653 conditions per place. [2024-06-28 01:48:34,661 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 409 selfloop transitions, 124 changer transitions 0/540 dead transitions. [2024-06-28 01:48:34,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 540 transitions, 9950 flow [2024-06-28 01:48:34,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:48:34,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:48:34,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 01:48:34,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-28 01:48:34,667 INFO L175 Difference]: Start difference. First operand has 437 places, 513 transitions, 8626 flow. Second operand 10 states and 154 transitions. [2024-06-28 01:48:34,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 540 transitions, 9950 flow [2024-06-28 01:48:36,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 540 transitions, 9640 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 01:48:36,310 INFO L231 Difference]: Finished difference. Result has 436 places, 515 transitions, 8697 flow [2024-06-28 01:48:36,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8316, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8697, PETRI_PLACES=436, PETRI_TRANSITIONS=515} [2024-06-28 01:48:36,311 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 395 predicate places. [2024-06-28 01:48:36,311 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 515 transitions, 8697 flow [2024-06-28 01:48:36,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:36,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:36,311 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 01:48:36,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 01:48:36,312 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:36,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:36,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1137185580, now seen corresponding path program 21 times [2024-06-28 01:48:36,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:36,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826810432] [2024-06-28 01:48:36,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:36,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:37,329 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 01:48:37,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:37,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826810432] [2024-06-28 01:48:37,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826810432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:37,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:37,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:37,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817322456] [2024-06-28 01:48:37,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:37,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:37,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:37,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:37,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:37,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:37,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 515 transitions, 8697 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:37,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:37,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:37,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:38,755 INFO L124 PetriNetUnfolderBase]: 2490/4298 cut-off events. [2024-06-28 01:48:38,755 INFO L125 PetriNetUnfolderBase]: For 217025/217025 co-relation queries the response was YES. [2024-06-28 01:48:38,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32650 conditions, 4298 events. 2490/4298 cut-off events. For 217025/217025 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 27435 event pairs, 644 based on Foata normal form. 2/4092 useless extension candidates. Maximal degree in co-relation 32444. Up to 3591 conditions per place. [2024-06-28 01:48:38,829 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 408 selfloop transitions, 129 changer transitions 0/544 dead transitions. [2024-06-28 01:48:38,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 544 transitions, 10045 flow [2024-06-28 01:48:38,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:48:38,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:48:38,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:48:38,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-28 01:48:38,831 INFO L175 Difference]: Start difference. First operand has 436 places, 515 transitions, 8697 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:48:38,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 544 transitions, 10045 flow [2024-06-28 01:48:40,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 544 transitions, 9682 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-28 01:48:40,663 INFO L231 Difference]: Finished difference. Result has 438 places, 517 transitions, 8728 flow [2024-06-28 01:48:40,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8338, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8728, PETRI_PLACES=438, PETRI_TRANSITIONS=517} [2024-06-28 01:48:40,664 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 397 predicate places. [2024-06-28 01:48:40,664 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 517 transitions, 8728 flow [2024-06-28 01:48:40,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:40,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:40,664 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 01:48:40,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 01:48:40,664 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:40,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:40,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1137329730, now seen corresponding path program 22 times [2024-06-28 01:48:40,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:40,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841054985] [2024-06-28 01:48:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:40,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:41,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:41,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841054985] [2024-06-28 01:48:41,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841054985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:41,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:41,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:41,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133789642] [2024-06-28 01:48:41,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:41,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:41,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:41,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:41,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:41,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:41,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 517 transitions, 8728 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:41,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:41,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:41,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:42,938 INFO L124 PetriNetUnfolderBase]: 2525/4361 cut-off events. [2024-06-28 01:48:42,938 INFO L125 PetriNetUnfolderBase]: For 233164/233164 co-relation queries the response was YES. [2024-06-28 01:48:43,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33455 conditions, 4361 events. 2525/4361 cut-off events. For 233164/233164 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 27953 event pairs, 645 based on Foata normal form. 2/4161 useless extension candidates. Maximal degree in co-relation 33248. Up to 3353 conditions per place. [2024-06-28 01:48:43,016 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 396 selfloop transitions, 148 changer transitions 0/551 dead transitions. [2024-06-28 01:48:43,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 551 transitions, 10448 flow [2024-06-28 01:48:43,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:48:43,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:48:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:48:43,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-28 01:48:43,017 INFO L175 Difference]: Start difference. First operand has 438 places, 517 transitions, 8728 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:48:43,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 551 transitions, 10448 flow [2024-06-28 01:48:44,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 551 transitions, 10068 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-28 01:48:44,813 INFO L231 Difference]: Finished difference. Result has 440 places, 521 transitions, 8906 flow [2024-06-28 01:48:44,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8358, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8906, PETRI_PLACES=440, PETRI_TRANSITIONS=521} [2024-06-28 01:48:44,814 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 399 predicate places. [2024-06-28 01:48:44,814 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 521 transitions, 8906 flow [2024-06-28 01:48:44,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:44,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:44,815 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 01:48:44,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 01:48:44,815 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:44,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:44,815 INFO L85 PathProgramCache]: Analyzing trace with hash -930526560, now seen corresponding path program 23 times [2024-06-28 01:48:44,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:44,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226517027] [2024-06-28 01:48:44,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:44,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:45,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:45,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226517027] [2024-06-28 01:48:45,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226517027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:45,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:45,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:45,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039005960] [2024-06-28 01:48:45,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:45,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:45,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:45,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:45,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:45,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:45,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 521 transitions, 8906 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:45,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:45,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:45,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:46,976 INFO L124 PetriNetUnfolderBase]: 2541/4390 cut-off events. [2024-06-28 01:48:46,976 INFO L125 PetriNetUnfolderBase]: For 234213/234213 co-relation queries the response was YES. [2024-06-28 01:48:47,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33702 conditions, 4390 events. 2541/4390 cut-off events. For 234213/234213 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 28219 event pairs, 642 based on Foata normal form. 2/4179 useless extension candidates. Maximal degree in co-relation 33494. Up to 3770 conditions per place. [2024-06-28 01:48:47,046 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 390 selfloop transitions, 151 changer transitions 0/548 dead transitions. [2024-06-28 01:48:47,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 548 transitions, 10250 flow [2024-06-28 01:48:47,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:48:47,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:48:47,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 01:48:47,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-06-28 01:48:47,047 INFO L175 Difference]: Start difference. First operand has 440 places, 521 transitions, 8906 flow. Second operand 10 states and 152 transitions. [2024-06-28 01:48:47,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 548 transitions, 10250 flow [2024-06-28 01:48:48,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 548 transitions, 9946 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-06-28 01:48:48,803 INFO L231 Difference]: Finished difference. Result has 444 places, 523 transitions, 9041 flow [2024-06-28 01:48:48,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8624, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9041, PETRI_PLACES=444, PETRI_TRANSITIONS=523} [2024-06-28 01:48:48,804 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 403 predicate places. [2024-06-28 01:48:48,804 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 523 transitions, 9041 flow [2024-06-28 01:48:48,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:48,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:48,804 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 01:48:48,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 01:48:48,805 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:48,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:48,805 INFO L85 PathProgramCache]: Analyzing trace with hash -344594107, now seen corresponding path program 2 times [2024-06-28 01:48:48,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:48,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621196548] [2024-06-28 01:48:48,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:48,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:49,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:49,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621196548] [2024-06-28 01:48:49,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621196548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:49,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:49,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:49,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609708771] [2024-06-28 01:48:49,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:49,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:49,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:49,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:49,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:49,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:49,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 523 transitions, 9041 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:49,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:49,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:49,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:51,217 INFO L124 PetriNetUnfolderBase]: 2625/4550 cut-off events. [2024-06-28 01:48:51,217 INFO L125 PetriNetUnfolderBase]: For 305207/305207 co-relation queries the response was YES. [2024-06-28 01:48:51,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35191 conditions, 4550 events. 2625/4550 cut-off events. For 305207/305207 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 29490 event pairs, 667 based on Foata normal form. 12/4348 useless extension candidates. Maximal degree in co-relation 34981. Up to 3356 conditions per place. [2024-06-28 01:48:51,286 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 345 selfloop transitions, 205 changer transitions 0/557 dead transitions. [2024-06-28 01:48:51,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 557 transitions, 10469 flow [2024-06-28 01:48:51,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:51,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:51,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 01:48:51,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-28 01:48:51,288 INFO L175 Difference]: Start difference. First operand has 444 places, 523 transitions, 9041 flow. Second operand 11 states and 171 transitions. [2024-06-28 01:48:51,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 557 transitions, 10469 flow [2024-06-28 01:48:53,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 557 transitions, 10084 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-28 01:48:53,108 INFO L231 Difference]: Finished difference. Result has 447 places, 525 transitions, 9210 flow [2024-06-28 01:48:53,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8656, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9210, PETRI_PLACES=447, PETRI_TRANSITIONS=525} [2024-06-28 01:48:53,109 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 406 predicate places. [2024-06-28 01:48:53,109 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 525 transitions, 9210 flow [2024-06-28 01:48:53,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:53,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:53,109 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 01:48:53,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 01:48:53,109 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:53,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:53,110 INFO L85 PathProgramCache]: Analyzing trace with hash -433621860, now seen corresponding path program 24 times [2024-06-28 01:48:53,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:53,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945355090] [2024-06-28 01:48:53,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:53,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:53,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:53,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945355090] [2024-06-28 01:48:53,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945355090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:53,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:53,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:53,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68032324] [2024-06-28 01:48:53,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:53,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:53,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:53,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:53,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:54,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:54,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 525 transitions, 9210 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:54,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:54,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:54,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:55,500 INFO L124 PetriNetUnfolderBase]: 2641/4576 cut-off events. [2024-06-28 01:48:55,501 INFO L125 PetriNetUnfolderBase]: For 250083/250083 co-relation queries the response was YES. [2024-06-28 01:48:55,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35663 conditions, 4576 events. 2641/4576 cut-off events. For 250083/250083 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 29802 event pairs, 684 based on Foata normal form. 2/4364 useless extension candidates. Maximal degree in co-relation 35452. Up to 3954 conditions per place. [2024-06-28 01:48:55,563 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 409 selfloop transitions, 136 changer transitions 0/552 dead transitions. [2024-06-28 01:48:55,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 552 transitions, 10544 flow [2024-06-28 01:48:55,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:48:55,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:48:55,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 01:48:55,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-28 01:48:55,565 INFO L175 Difference]: Start difference. First operand has 447 places, 525 transitions, 9210 flow. Second operand 10 states and 153 transitions. [2024-06-28 01:48:55,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 552 transitions, 10544 flow [2024-06-28 01:48:57,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 552 transitions, 10052 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-28 01:48:57,298 INFO L231 Difference]: Finished difference. Result has 448 places, 527 transitions, 9109 flow [2024-06-28 01:48:57,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8718, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9109, PETRI_PLACES=448, PETRI_TRANSITIONS=527} [2024-06-28 01:48:57,299 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 407 predicate places. [2024-06-28 01:48:57,299 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 527 transitions, 9109 flow [2024-06-28 01:48:57,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:57,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:57,299 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 01:48:57,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 01:48:57,300 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:57,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:57,300 INFO L85 PathProgramCache]: Analyzing trace with hash -937883790, now seen corresponding path program 25 times [2024-06-28 01:48:57,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:57,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510553209] [2024-06-28 01:48:57,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:57,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:58,162 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 01:48:58,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:58,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510553209] [2024-06-28 01:48:58,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510553209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:58,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:58,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:58,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587532294] [2024-06-28 01:48:58,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:58,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:58,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:58,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:58,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:58,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:58,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 527 transitions, 9109 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:58,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:58,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:58,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:59,658 INFO L124 PetriNetUnfolderBase]: 2638/4571 cut-off events. [2024-06-28 01:48:59,658 INFO L125 PetriNetUnfolderBase]: For 229331/229331 co-relation queries the response was YES. [2024-06-28 01:48:59,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34657 conditions, 4571 events. 2638/4571 cut-off events. For 229331/229331 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 29761 event pairs, 670 based on Foata normal form. 2/4363 useless extension candidates. Maximal degree in co-relation 34445. Up to 3821 conditions per place. [2024-06-28 01:48:59,735 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 402 selfloop transitions, 145 changer transitions 0/554 dead transitions. [2024-06-28 01:48:59,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 554 transitions, 10353 flow [2024-06-28 01:48:59,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:48:59,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:48:59,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:48:59,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-28 01:48:59,760 INFO L175 Difference]: Start difference. First operand has 448 places, 527 transitions, 9109 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:48:59,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 554 transitions, 10353 flow [2024-06-28 01:49:01,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 554 transitions, 9930 flow, removed 79 selfloop flow, removed 8 redundant places. [2024-06-28 01:49:01,773 INFO L231 Difference]: Finished difference. Result has 450 places, 527 transitions, 8984 flow [2024-06-28 01:49:01,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8686, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8984, PETRI_PLACES=450, PETRI_TRANSITIONS=527} [2024-06-28 01:49:01,774 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 409 predicate places. [2024-06-28 01:49:01,774 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 527 transitions, 8984 flow [2024-06-28 01:49:01,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:01,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:01,800 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 01:49:01,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 01:49:01,801 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:01,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:01,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1491659920, now seen corresponding path program 26 times [2024-06-28 01:49:01,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:01,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802572091] [2024-06-28 01:49:01,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:01,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:02,798 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 01:49:02,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:02,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802572091] [2024-06-28 01:49:02,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802572091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:02,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:02,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:02,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806757278] [2024-06-28 01:49:02,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:02,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:02,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:02,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:02,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:02,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:49:02,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 527 transitions, 8984 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:02,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:02,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:49:02,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:04,278 INFO L124 PetriNetUnfolderBase]: 2654/4599 cut-off events. [2024-06-28 01:49:04,279 INFO L125 PetriNetUnfolderBase]: For 231405/231405 co-relation queries the response was YES. [2024-06-28 01:49:04,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34790 conditions, 4599 events. 2654/4599 cut-off events. For 231405/231405 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 29951 event pairs, 709 based on Foata normal form. 2/4385 useless extension candidates. Maximal degree in co-relation 34577. Up to 3840 conditions per place. [2024-06-28 01:49:04,353 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 409 selfloop transitions, 136 changer transitions 0/552 dead transitions. [2024-06-28 01:49:04,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 552 transitions, 10332 flow [2024-06-28 01:49:04,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:49:04,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:49:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 01:49:04,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 01:49:04,355 INFO L175 Difference]: Start difference. First operand has 450 places, 527 transitions, 8984 flow. Second operand 10 states and 155 transitions. [2024-06-28 01:49:04,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 552 transitions, 10332 flow [2024-06-28 01:49:06,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 552 transitions, 9958 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 01:49:06,222 INFO L231 Difference]: Finished difference. Result has 451 places, 529 transitions, 9017 flow [2024-06-28 01:49:06,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8612, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9017, PETRI_PLACES=451, PETRI_TRANSITIONS=529} [2024-06-28 01:49:06,222 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 410 predicate places. [2024-06-28 01:49:06,222 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 529 transitions, 9017 flow [2024-06-28 01:49:06,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:06,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:06,223 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 01:49:06,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 01:49:06,223 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:06,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:06,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1573064556, now seen corresponding path program 27 times [2024-06-28 01:49:06,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:06,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929508169] [2024-06-28 01:49:06,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:06,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:07,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:07,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:07,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929508169] [2024-06-28 01:49:07,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929508169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:07,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:07,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:07,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339300976] [2024-06-28 01:49:07,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:07,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:07,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:07,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:07,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:07,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:49:07,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 529 transitions, 9017 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:07,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:07,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:49:07,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:08,628 INFO L124 PetriNetUnfolderBase]: 2670/4626 cut-off events. [2024-06-28 01:49:08,628 INFO L125 PetriNetUnfolderBase]: For 234356/234356 co-relation queries the response was YES. [2024-06-28 01:49:08,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35004 conditions, 4626 events. 2670/4626 cut-off events. For 234356/234356 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 30185 event pairs, 709 based on Foata normal form. 2/4414 useless extension candidates. Maximal degree in co-relation 34790. Up to 3824 conditions per place. [2024-06-28 01:49:08,704 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 410 selfloop transitions, 139 changer transitions 0/556 dead transitions. [2024-06-28 01:49:08,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 556 transitions, 10387 flow [2024-06-28 01:49:08,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:49:08,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:49:08,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 01:49:08,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-06-28 01:49:08,706 INFO L175 Difference]: Start difference. First operand has 451 places, 529 transitions, 9017 flow. Second operand 10 states and 159 transitions. [2024-06-28 01:49:08,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 556 transitions, 10387 flow [2024-06-28 01:49:10,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 556 transitions, 9998 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-28 01:49:10,451 INFO L231 Difference]: Finished difference. Result has 453 places, 531 transitions, 9043 flow [2024-06-28 01:49:10,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8628, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9043, PETRI_PLACES=453, PETRI_TRANSITIONS=531} [2024-06-28 01:49:10,452 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 412 predicate places. [2024-06-28 01:49:10,452 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 531 transitions, 9043 flow [2024-06-28 01:49:10,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:10,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:10,452 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 01:49:10,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 01:49:10,452 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:10,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:10,453 INFO L85 PathProgramCache]: Analyzing trace with hash -159248760, now seen corresponding path program 28 times [2024-06-28 01:49:10,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:10,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555664508] [2024-06-28 01:49:10,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:10,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:11,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:11,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:11,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555664508] [2024-06-28 01:49:11,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555664508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:11,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:11,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:11,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252836556] [2024-06-28 01:49:11,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:11,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:11,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:11,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:11,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:11,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:49:11,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 531 transitions, 9043 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:11,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:11,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:49:11,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:12,744 INFO L124 PetriNetUnfolderBase]: 2689/4660 cut-off events. [2024-06-28 01:49:12,744 INFO L125 PetriNetUnfolderBase]: For 241569/241569 co-relation queries the response was YES. [2024-06-28 01:49:12,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35351 conditions, 4660 events. 2689/4660 cut-off events. For 241569/241569 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 30439 event pairs, 710 based on Foata normal form. 2/4451 useless extension candidates. Maximal degree in co-relation 35136. Up to 3690 conditions per place. [2024-06-28 01:49:12,822 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 409 selfloop transitions, 147 changer transitions 0/563 dead transitions. [2024-06-28 01:49:12,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 563 transitions, 10807 flow [2024-06-28 01:49:12,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:49:12,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:49:12,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:49:12,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-28 01:49:12,823 INFO L175 Difference]: Start difference. First operand has 453 places, 531 transitions, 9043 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:49:12,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 563 transitions, 10807 flow [2024-06-28 01:49:14,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 563 transitions, 10408 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-28 01:49:14,642 INFO L231 Difference]: Finished difference. Result has 455 places, 535 transitions, 9211 flow [2024-06-28 01:49:14,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8644, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9211, PETRI_PLACES=455, PETRI_TRANSITIONS=535} [2024-06-28 01:49:14,643 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 414 predicate places. [2024-06-28 01:49:14,643 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 535 transitions, 9211 flow [2024-06-28 01:49:14,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:14,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:14,643 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 01:49:14,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 01:49:14,643 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:14,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:14,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1567486850, now seen corresponding path program 1 times [2024-06-28 01:49:14,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:14,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418567825] [2024-06-28 01:49:14,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:14,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:15,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:15,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:15,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418567825] [2024-06-28 01:49:15,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418567825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:15,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:15,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:15,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929902542] [2024-06-28 01:49:15,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:15,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:15,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:15,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:15,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:15,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:49:15,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 535 transitions, 9211 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:15,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:15,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:49:15,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:17,243 INFO L124 PetriNetUnfolderBase]: 2702/4679 cut-off events. [2024-06-28 01:49:17,243 INFO L125 PetriNetUnfolderBase]: For 242593/242593 co-relation queries the response was YES. [2024-06-28 01:49:17,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35340 conditions, 4679 events. 2702/4679 cut-off events. For 242593/242593 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 30548 event pairs, 768 based on Foata normal form. 2/4461 useless extension candidates. Maximal degree in co-relation 35124. Up to 3596 conditions per place. [2024-06-28 01:49:17,317 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 378 selfloop transitions, 179 changer transitions 0/564 dead transitions. [2024-06-28 01:49:17,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 564 transitions, 10541 flow [2024-06-28 01:49:17,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:49:17,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:49:17,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-28 01:49:17,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-28 01:49:17,319 INFO L175 Difference]: Start difference. First operand has 455 places, 535 transitions, 9211 flow. Second operand 11 states and 169 transitions. [2024-06-28 01:49:17,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 564 transitions, 10541 flow [2024-06-28 01:49:19,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 564 transitions, 10226 flow, removed 77 selfloop flow, removed 6 redundant places. [2024-06-28 01:49:19,161 INFO L231 Difference]: Finished difference. Result has 461 places, 540 transitions, 9384 flow [2024-06-28 01:49:19,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8896, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9384, PETRI_PLACES=461, PETRI_TRANSITIONS=540} [2024-06-28 01:49:19,162 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 420 predicate places. [2024-06-28 01:49:19,162 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 540 transitions, 9384 flow [2024-06-28 01:49:19,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:19,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:19,162 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 01:49:19,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 01:49:19,163 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:19,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:19,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1366405536, now seen corresponding path program 29 times [2024-06-28 01:49:19,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:19,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348864396] [2024-06-28 01:49:19,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:19,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:20,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:20,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:20,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348864396] [2024-06-28 01:49:20,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348864396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:20,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:20,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:20,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275407714] [2024-06-28 01:49:20,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:20,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:20,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:20,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:20,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:20,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:49:20,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 540 transitions, 9384 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:20,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:20,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:49:20,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:21,576 INFO L124 PetriNetUnfolderBase]: 2718/4708 cut-off events. [2024-06-28 01:49:21,576 INFO L125 PetriNetUnfolderBase]: For 243802/243802 co-relation queries the response was YES. [2024-06-28 01:49:21,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36040 conditions, 4708 events. 2718/4708 cut-off events. For 243802/243802 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 30827 event pairs, 723 based on Foata normal form. 2/4490 useless extension candidates. Maximal degree in co-relation 35821. Up to 3948 conditions per place. [2024-06-28 01:49:21,643 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 425 selfloop transitions, 134 changer transitions 0/566 dead transitions. [2024-06-28 01:49:21,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 566 transitions, 10750 flow [2024-06-28 01:49:21,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:49:21,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:49:21,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:49:21,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-28 01:49:21,644 INFO L175 Difference]: Start difference. First operand has 461 places, 540 transitions, 9384 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:49:21,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 566 transitions, 10750 flow [2024-06-28 01:49:23,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 566 transitions, 10400 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 01:49:23,466 INFO L231 Difference]: Finished difference. Result has 463 places, 542 transitions, 9421 flow [2024-06-28 01:49:23,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9034, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9421, PETRI_PLACES=463, PETRI_TRANSITIONS=542} [2024-06-28 01:49:23,467 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 422 predicate places. [2024-06-28 01:49:23,467 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 542 transitions, 9421 flow [2024-06-28 01:49:23,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:23,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:23,467 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 01:49:23,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 01:49:23,467 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:23,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:23,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1373757186, now seen corresponding path program 30 times [2024-06-28 01:49:23,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:23,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506124210] [2024-06-28 01:49:23,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:23,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:24,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:24,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506124210] [2024-06-28 01:49:24,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506124210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:24,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:24,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:24,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915293260] [2024-06-28 01:49:24,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:24,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:24,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:24,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:24,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:24,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:49:24,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 542 transitions, 9421 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:24,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:24,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:49:24,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:25,929 INFO L124 PetriNetUnfolderBase]: 2734/4736 cut-off events. [2024-06-28 01:49:25,929 INFO L125 PetriNetUnfolderBase]: For 249225/249225 co-relation queries the response was YES. [2024-06-28 01:49:25,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36236 conditions, 4736 events. 2734/4736 cut-off events. For 249225/249225 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 31030 event pairs, 733 based on Foata normal form. 2/4518 useless extension candidates. Maximal degree in co-relation 36016. Up to 3976 conditions per place. [2024-06-28 01:49:26,014 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 428 selfloop transitions, 133 changer transitions 0/568 dead transitions. [2024-06-28 01:49:26,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 568 transitions, 10795 flow [2024-06-28 01:49:26,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:49:26,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:49:26,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:49:26,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-28 01:49:26,016 INFO L175 Difference]: Start difference. First operand has 463 places, 542 transitions, 9421 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:49:26,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 568 transitions, 10795 flow [2024-06-28 01:49:28,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 568 transitions, 10428 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-28 01:49:28,261 INFO L231 Difference]: Finished difference. Result has 465 places, 544 transitions, 9443 flow [2024-06-28 01:49:28,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9054, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9443, PETRI_PLACES=465, PETRI_TRANSITIONS=544} [2024-06-28 01:49:28,262 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 424 predicate places. [2024-06-28 01:49:28,262 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 544 transitions, 9443 flow [2024-06-28 01:49:28,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:28,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:28,262 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 01:49:28,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 01:49:28,262 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:28,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:28,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1366397600, now seen corresponding path program 2 times [2024-06-28 01:49:28,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:28,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470467686] [2024-06-28 01:49:28,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:28,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:29,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:29,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:29,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470467686] [2024-06-28 01:49:29,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470467686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:29,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:29,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:29,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140299473] [2024-06-28 01:49:29,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:29,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:29,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:29,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:29,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:29,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:49:29,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 544 transitions, 9443 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:29,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:29,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:49:29,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:30,756 INFO L124 PetriNetUnfolderBase]: 2747/4755 cut-off events. [2024-06-28 01:49:30,757 INFO L125 PetriNetUnfolderBase]: For 250183/250183 co-relation queries the response was YES. [2024-06-28 01:49:30,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36221 conditions, 4755 events. 2747/4755 cut-off events. For 250183/250183 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 31156 event pairs, 771 based on Foata normal form. 2/4533 useless extension candidates. Maximal degree in co-relation 36000. Up to 3671 conditions per place. [2024-06-28 01:49:30,837 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 390 selfloop transitions, 174 changer transitions 0/571 dead transitions. [2024-06-28 01:49:30,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 571 transitions, 10773 flow [2024-06-28 01:49:30,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:49:30,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:49:30,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 01:49:30,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-28 01:49:30,838 INFO L175 Difference]: Start difference. First operand has 465 places, 544 transitions, 9443 flow. Second operand 11 states and 172 transitions. [2024-06-28 01:49:30,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 571 transitions, 10773 flow [2024-06-28 01:49:32,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 571 transitions, 10404 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-28 01:49:32,995 INFO L231 Difference]: Finished difference. Result has 468 places, 546 transitions, 9489 flow [2024-06-28 01:49:32,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9074, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9489, PETRI_PLACES=468, PETRI_TRANSITIONS=546} [2024-06-28 01:49:32,996 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 427 predicate places. [2024-06-28 01:49:32,997 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 546 transitions, 9489 flow [2024-06-28 01:49:32,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:32,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:32,997 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 01:49:32,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 01:49:32,997 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:32,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:32,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1366138130, now seen corresponding path program 3 times [2024-06-28 01:49:32,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:32,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258770710] [2024-06-28 01:49:32,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:32,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:34,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:34,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258770710] [2024-06-28 01:49:34,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258770710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:34,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:34,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:34,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084560775] [2024-06-28 01:49:34,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:34,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:34,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:34,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:34,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:34,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:49:34,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 546 transitions, 9489 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:34,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:34,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:49:34,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:35,556 INFO L124 PetriNetUnfolderBase]: 2760/4774 cut-off events. [2024-06-28 01:49:35,556 INFO L125 PetriNetUnfolderBase]: For 251400/251400 co-relation queries the response was YES. [2024-06-28 01:49:35,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36380 conditions, 4774 events. 2760/4774 cut-off events. For 251400/251400 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 31282 event pairs, 771 based on Foata normal form. 2/4549 useless extension candidates. Maximal degree in co-relation 36158. Up to 3690 conditions per place. [2024-06-28 01:49:35,639 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 390 selfloop transitions, 176 changer transitions 0/573 dead transitions. [2024-06-28 01:49:35,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 573 transitions, 10827 flow [2024-06-28 01:49:35,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:49:35,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:49:35,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 01:49:35,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-28 01:49:35,641 INFO L175 Difference]: Start difference. First operand has 468 places, 546 transitions, 9489 flow. Second operand 11 states and 171 transitions. [2024-06-28 01:49:35,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 573 transitions, 10827 flow [2024-06-28 01:49:37,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 573 transitions, 10478 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 01:49:37,679 INFO L231 Difference]: Finished difference. Result has 472 places, 548 transitions, 9563 flow [2024-06-28 01:49:37,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9140, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9563, PETRI_PLACES=472, PETRI_TRANSITIONS=548} [2024-06-28 01:49:37,680 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 431 predicate places. [2024-06-28 01:49:37,680 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 548 transitions, 9563 flow [2024-06-28 01:49:37,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:37,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:37,680 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 01:49:37,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 01:49:37,681 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:37,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:37,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1366128489, now seen corresponding path program 3 times [2024-06-28 01:49:37,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:37,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130814740] [2024-06-28 01:49:37,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:37,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:38,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:38,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:38,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130814740] [2024-06-28 01:49:38,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130814740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:38,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:38,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:38,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103363286] [2024-06-28 01:49:38,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:38,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:38,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:38,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:38,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:38,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:49:38,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 548 transitions, 9563 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:38,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:38,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:49:38,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:40,287 INFO L124 PetriNetUnfolderBase]: 2840/4928 cut-off events. [2024-06-28 01:49:40,288 INFO L125 PetriNetUnfolderBase]: For 341380/341380 co-relation queries the response was YES. [2024-06-28 01:49:40,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37525 conditions, 4928 events. 2840/4928 cut-off events. For 341380/341380 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 32537 event pairs, 799 based on Foata normal form. 14/4715 useless extension candidates. Maximal degree in co-relation 37302. Up to 3612 conditions per place. [2024-06-28 01:49:40,373 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 389 selfloop transitions, 185 changer transitions 0/581 dead transitions. [2024-06-28 01:49:40,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 581 transitions, 11045 flow [2024-06-28 01:49:40,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:49:40,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:49:40,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 01:49:40,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-28 01:49:40,374 INFO L175 Difference]: Start difference. First operand has 472 places, 548 transitions, 9563 flow. Second operand 11 states and 179 transitions. [2024-06-28 01:49:40,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 581 transitions, 11045 flow [2024-06-28 01:49:42,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 581 transitions, 10623 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 01:49:42,551 INFO L231 Difference]: Finished difference. Result has 475 places, 550 transitions, 9677 flow [2024-06-28 01:49:42,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9141, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9677, PETRI_PLACES=475, PETRI_TRANSITIONS=550} [2024-06-28 01:49:42,551 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 434 predicate places. [2024-06-28 01:49:42,552 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 550 transitions, 9677 flow [2024-06-28 01:49:42,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:42,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:42,552 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 01:49:42,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 01:49:42,552 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:42,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:42,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1373762766, now seen corresponding path program 31 times [2024-06-28 01:49:42,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:42,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982075380] [2024-06-28 01:49:42,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:42,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:43,599 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 01:49:43,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:43,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982075380] [2024-06-28 01:49:43,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982075380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:43,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:43,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:43,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713374501] [2024-06-28 01:49:43,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:43,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:43,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:43,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:43,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:43,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:49:43,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 550 transitions, 9677 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:43,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:43,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:49:43,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:45,160 INFO L124 PetriNetUnfolderBase]: 2856/4957 cut-off events. [2024-06-28 01:49:45,161 INFO L125 PetriNetUnfolderBase]: For 265146/265146 co-relation queries the response was YES. [2024-06-28 01:49:45,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37967 conditions, 4957 events. 2856/4957 cut-off events. For 265146/265146 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 32859 event pairs, 759 based on Foata normal form. 2/4733 useless extension candidates. Maximal degree in co-relation 37742. Up to 4130 conditions per place. [2024-06-28 01:49:45,250 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 433 selfloop transitions, 138 changer transitions 0/578 dead transitions. [2024-06-28 01:49:45,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 578 transitions, 11087 flow [2024-06-28 01:49:45,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:49:45,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:49:45,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:49:45,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-28 01:49:45,251 INFO L175 Difference]: Start difference. First operand has 475 places, 550 transitions, 9677 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:49:45,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 578 transitions, 11087 flow [2024-06-28 01:49:47,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 578 transitions, 10521 flow, removed 56 selfloop flow, removed 12 redundant places. [2024-06-28 01:49:47,690 INFO L231 Difference]: Finished difference. Result has 473 places, 552 transitions, 9514 flow [2024-06-28 01:49:47,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9111, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9514, PETRI_PLACES=473, PETRI_TRANSITIONS=552} [2024-06-28 01:49:47,691 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 432 predicate places. [2024-06-28 01:49:47,691 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 552 transitions, 9514 flow [2024-06-28 01:49:47,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:47,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:47,691 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 01:49:47,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 01:49:47,692 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:47,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:47,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1412501795, now seen corresponding path program 4 times [2024-06-28 01:49:47,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:47,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921052047] [2024-06-28 01:49:47,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:47,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:48,709 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 01:49:48,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:48,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921052047] [2024-06-28 01:49:48,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921052047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:48,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:48,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:48,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420781090] [2024-06-28 01:49:48,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:48,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:48,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:48,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:48,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:48,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:49:48,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 552 transitions, 9514 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:48,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:48,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:49:48,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:50,259 INFO L124 PetriNetUnfolderBase]: 2872/4996 cut-off events. [2024-06-28 01:49:50,259 INFO L125 PetriNetUnfolderBase]: For 247613/247613 co-relation queries the response was YES. [2024-06-28 01:49:50,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37437 conditions, 4996 events. 2872/4996 cut-off events. For 247613/247613 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 33324 event pairs, 1118 based on Foata normal form. 2/4769 useless extension candidates. Maximal degree in co-relation 37211. Up to 4747 conditions per place. [2024-06-28 01:49:50,346 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 547 selfloop transitions, 26 changer transitions 0/580 dead transitions. [2024-06-28 01:49:50,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 580 transitions, 11182 flow [2024-06-28 01:49:50,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:49:50,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:49:50,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 170 transitions. [2024-06-28 01:49:50,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38288288288288286 [2024-06-28 01:49:50,347 INFO L175 Difference]: Start difference. First operand has 473 places, 552 transitions, 9514 flow. Second operand 12 states and 170 transitions. [2024-06-28 01:49:50,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 580 transitions, 11182 flow [2024-06-28 01:49:52,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 580 transitions, 10799 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-28 01:49:52,694 INFO L231 Difference]: Finished difference. Result has 477 places, 554 transitions, 9328 flow [2024-06-28 01:49:52,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9131, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9328, PETRI_PLACES=477, PETRI_TRANSITIONS=554} [2024-06-28 01:49:52,695 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 436 predicate places. [2024-06-28 01:49:52,695 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 554 transitions, 9328 flow [2024-06-28 01:49:52,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:52,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:52,695 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 01:49:52,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 01:49:52,696 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:52,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:52,696 INFO L85 PathProgramCache]: Analyzing trace with hash 391496108, now seen corresponding path program 32 times [2024-06-28 01:49:52,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:52,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846119303] [2024-06-28 01:49:52,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:52,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:53,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:53,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:53,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846119303] [2024-06-28 01:49:53,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846119303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:53,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:53,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:53,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456051615] [2024-06-28 01:49:53,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:53,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:53,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:53,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:53,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:53,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:49:53,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 554 transitions, 9328 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:53,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:53,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:49:53,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:55,340 INFO L124 PetriNetUnfolderBase]: 2888/5014 cut-off events. [2024-06-28 01:49:55,340 INFO L125 PetriNetUnfolderBase]: For 249171/249171 co-relation queries the response was YES. [2024-06-28 01:49:55,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37227 conditions, 5014 events. 2888/5014 cut-off events. For 249171/249171 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 33333 event pairs, 740 based on Foata normal form. 2/4788 useless extension candidates. Maximal degree in co-relation 37000. Up to 4248 conditions per place. [2024-06-28 01:49:55,430 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 420 selfloop transitions, 152 changer transitions 0/579 dead transitions. [2024-06-28 01:49:55,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 579 transitions, 10726 flow [2024-06-28 01:49:55,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:49:55,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:49:55,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 01:49:55,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-28 01:49:55,432 INFO L175 Difference]: Start difference. First operand has 477 places, 554 transitions, 9328 flow. Second operand 10 states and 154 transitions. [2024-06-28 01:49:55,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 579 transitions, 10726 flow [2024-06-28 01:49:57,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 579 transitions, 10545 flow, removed 66 selfloop flow, removed 10 redundant places. [2024-06-28 01:49:57,636 INFO L231 Difference]: Finished difference. Result has 477 places, 556 transitions, 9582 flow [2024-06-28 01:49:57,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9147, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9582, PETRI_PLACES=477, PETRI_TRANSITIONS=556} [2024-06-28 01:49:57,637 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 436 predicate places. [2024-06-28 01:49:57,637 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 556 transitions, 9582 flow [2024-06-28 01:49:57,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:57,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:57,637 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 01:49:57,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 01:49:57,637 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:57,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:57,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1678525846, now seen corresponding path program 4 times [2024-06-28 01:49:57,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:57,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504855889] [2024-06-28 01:49:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:57,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:58,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:58,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504855889] [2024-06-28 01:49:58,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504855889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:58,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:58,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:49:58,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991933184] [2024-06-28 01:49:58,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:58,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:49:58,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:58,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:49:58,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:49:58,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:49:58,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 556 transitions, 9582 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:58,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:58,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:49:58,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:00,134 INFO L124 PetriNetUnfolderBase]: 2884/5009 cut-off events. [2024-06-28 01:50:00,134 INFO L125 PetriNetUnfolderBase]: For 235251/235251 co-relation queries the response was YES. [2024-06-28 01:50:00,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37082 conditions, 5009 events. 2884/5009 cut-off events. For 235251/235251 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 33288 event pairs, 748 based on Foata normal form. 2/4781 useless extension candidates. Maximal degree in co-relation 36854. Up to 3901 conditions per place. [2024-06-28 01:50:00,216 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 378 selfloop transitions, 193 changer transitions 0/578 dead transitions. [2024-06-28 01:50:00,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 578 transitions, 10850 flow [2024-06-28 01:50:00,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:50:00,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:50:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:50:00,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-28 01:50:00,217 INFO L175 Difference]: Start difference. First operand has 477 places, 556 transitions, 9582 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:50:00,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 578 transitions, 10850 flow [2024-06-28 01:50:02,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 578 transitions, 10405 flow, removed 72 selfloop flow, removed 8 redundant places. [2024-06-28 01:50:02,218 INFO L231 Difference]: Finished difference. Result has 479 places, 556 transitions, 9533 flow [2024-06-28 01:50:02,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9137, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9533, PETRI_PLACES=479, PETRI_TRANSITIONS=556} [2024-06-28 01:50:02,219 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-28 01:50:02,219 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 556 transitions, 9533 flow [2024-06-28 01:50:02,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:02,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:02,226 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 01:50:02,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 01:50:02,226 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:02,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:02,227 INFO L85 PathProgramCache]: Analyzing trace with hash 565610080, now seen corresponding path program 33 times [2024-06-28 01:50:02,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:02,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661316809] [2024-06-28 01:50:02,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:02,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:03,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:03,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:03,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661316809] [2024-06-28 01:50:03,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661316809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:03,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:03,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:03,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224710480] [2024-06-28 01:50:03,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:03,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:03,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:03,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:03,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:03,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:50:03,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 556 transitions, 9533 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:03,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:03,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:50:03,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:04,752 INFO L124 PetriNetUnfolderBase]: 2900/5038 cut-off events. [2024-06-28 01:50:04,752 INFO L125 PetriNetUnfolderBase]: For 238290/238290 co-relation queries the response was YES. [2024-06-28 01:50:04,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37342 conditions, 5038 events. 2900/5038 cut-off events. For 238290/238290 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 33537 event pairs, 736 based on Foata normal form. 2/4810 useless extension candidates. Maximal degree in co-relation 37113. Up to 4270 conditions per place. [2024-06-28 01:50:04,830 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 399 selfloop transitions, 175 changer transitions 0/581 dead transitions. [2024-06-28 01:50:04,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 581 transitions, 10939 flow [2024-06-28 01:50:04,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:50:04,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:50:04,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 01:50:04,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-28 01:50:04,832 INFO L175 Difference]: Start difference. First operand has 479 places, 556 transitions, 9533 flow. Second operand 10 states and 153 transitions. [2024-06-28 01:50:04,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 581 transitions, 10939 flow [2024-06-28 01:50:06,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 581 transitions, 10505 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 01:50:06,839 INFO L231 Difference]: Finished difference. Result has 479 places, 558 transitions, 9584 flow [2024-06-28 01:50:06,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9099, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9584, PETRI_PLACES=479, PETRI_TRANSITIONS=558} [2024-06-28 01:50:06,839 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-28 01:50:06,839 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 558 transitions, 9584 flow [2024-06-28 01:50:06,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:06,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:06,840 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 01:50:06,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 01:50:06,840 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:06,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:06,840 INFO L85 PathProgramCache]: Analyzing trace with hash 879576716, now seen corresponding path program 5 times [2024-06-28 01:50:06,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:06,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607418029] [2024-06-28 01:50:06,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:06,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:08,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:08,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607418029] [2024-06-28 01:50:08,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607418029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:08,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:08,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:08,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69825592] [2024-06-28 01:50:08,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:08,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:08,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:08,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:08,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:08,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:50:08,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 558 transitions, 9584 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:08,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:08,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:50:08,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:09,784 INFO L124 PetriNetUnfolderBase]: 2896/5042 cut-off events. [2024-06-28 01:50:09,784 INFO L125 PetriNetUnfolderBase]: For 222942/222942 co-relation queries the response was YES. [2024-06-28 01:50:09,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36954 conditions, 5042 events. 2896/5042 cut-off events. For 222942/222942 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 33700 event pairs, 1121 based on Foata normal form. 2/4813 useless extension candidates. Maximal degree in co-relation 36724. Up to 4827 conditions per place. [2024-06-28 01:50:09,860 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 551 selfloop transitions, 20 changer transitions 0/578 dead transitions. [2024-06-28 01:50:09,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 578 transitions, 10840 flow [2024-06-28 01:50:09,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:50:09,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:50:09,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-28 01:50:09,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36036036036036034 [2024-06-28 01:50:09,861 INFO L175 Difference]: Start difference. First operand has 479 places, 558 transitions, 9584 flow. Second operand 12 states and 160 transitions. [2024-06-28 01:50:09,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 578 transitions, 10840 flow [2024-06-28 01:50:11,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 578 transitions, 10345 flow, removed 74 selfloop flow, removed 8 redundant places. [2024-06-28 01:50:11,980 INFO L231 Difference]: Finished difference. Result has 483 places, 558 transitions, 9134 flow [2024-06-28 01:50:11,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9089, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9134, PETRI_PLACES=483, PETRI_TRANSITIONS=558} [2024-06-28 01:50:11,980 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 442 predicate places. [2024-06-28 01:50:11,980 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 558 transitions, 9134 flow [2024-06-28 01:50:11,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:11,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:11,981 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 01:50:11,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 01:50:11,981 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:11,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:11,981 INFO L85 PathProgramCache]: Analyzing trace with hash 879586357, now seen corresponding path program 5 times [2024-06-28 01:50:11,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:11,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274467411] [2024-06-28 01:50:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:11,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:13,025 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 01:50:13,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:13,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274467411] [2024-06-28 01:50:13,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274467411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:13,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:13,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:13,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789940263] [2024-06-28 01:50:13,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:13,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:13,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:13,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:13,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:13,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:50:13,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 558 transitions, 9134 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:13,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:13,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:50:13,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:14,807 INFO L124 PetriNetUnfolderBase]: 2980/5202 cut-off events. [2024-06-28 01:50:14,807 INFO L125 PetriNetUnfolderBase]: For 311081/311081 co-relation queries the response was YES. [2024-06-28 01:50:14,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37578 conditions, 5202 events. 2980/5202 cut-off events. For 311081/311081 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 35050 event pairs, 1149 based on Foata normal form. 12/4983 useless extension candidates. Maximal degree in co-relation 37347. Up to 4830 conditions per place. [2024-06-28 01:50:14,883 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 558 selfloop transitions, 22 changer transitions 0/587 dead transitions. [2024-06-28 01:50:14,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 587 transitions, 10612 flow [2024-06-28 01:50:14,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:50:14,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:50:14,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-28 01:50:14,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3931203931203931 [2024-06-28 01:50:14,885 INFO L175 Difference]: Start difference. First operand has 483 places, 558 transitions, 9134 flow. Second operand 11 states and 160 transitions. [2024-06-28 01:50:14,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 587 transitions, 10612 flow [2024-06-28 01:50:16,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 587 transitions, 10553 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-28 01:50:16,922 INFO L231 Difference]: Finished difference. Result has 482 places, 560 transitions, 9270 flow [2024-06-28 01:50:16,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9075, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9270, PETRI_PLACES=482, PETRI_TRANSITIONS=560} [2024-06-28 01:50:16,923 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 441 predicate places. [2024-06-28 01:50:16,923 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 560 transitions, 9270 flow [2024-06-28 01:50:16,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:16,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:16,923 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 01:50:16,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 01:50:16,923 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:16,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:16,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1668758166, now seen corresponding path program 34 times [2024-06-28 01:50:16,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:16,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172839640] [2024-06-28 01:50:16,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:16,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:17,845 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 01:50:17,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:17,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172839640] [2024-06-28 01:50:17,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172839640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:17,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:17,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:17,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203919234] [2024-06-28 01:50:17,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:17,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:17,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:17,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:17,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:17,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:50:17,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 560 transitions, 9270 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:17,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:17,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:50:17,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:19,617 INFO L124 PetriNetUnfolderBase]: 2996/5220 cut-off events. [2024-06-28 01:50:19,619 INFO L125 PetriNetUnfolderBase]: For 244033/244033 co-relation queries the response was YES. [2024-06-28 01:50:19,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38053 conditions, 5220 events. 2996/5220 cut-off events. For 244033/244033 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 35053 event pairs, 786 based on Foata normal form. 2/4991 useless extension candidates. Maximal degree in co-relation 37821. Up to 4448 conditions per place. [2024-06-28 01:50:19,695 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 428 selfloop transitions, 151 changer transitions 0/586 dead transitions. [2024-06-28 01:50:19,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 586 transitions, 10696 flow [2024-06-28 01:50:19,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:50:19,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:50:19,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:50:19,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-28 01:50:19,696 INFO L175 Difference]: Start difference. First operand has 482 places, 560 transitions, 9270 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:50:19,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 586 transitions, 10696 flow [2024-06-28 01:50:21,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 586 transitions, 10545 flow, removed 56 selfloop flow, removed 9 redundant places. [2024-06-28 01:50:21,673 INFO L231 Difference]: Finished difference. Result has 483 places, 562 transitions, 9560 flow [2024-06-28 01:50:21,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9119, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9560, PETRI_PLACES=483, PETRI_TRANSITIONS=562} [2024-06-28 01:50:21,673 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 442 predicate places. [2024-06-28 01:50:21,674 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 562 transitions, 9560 flow [2024-06-28 01:50:21,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:21,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:21,674 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 01:50:21,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 01:50:21,674 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:21,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:21,675 INFO L85 PathProgramCache]: Analyzing trace with hash 399124805, now seen corresponding path program 6 times [2024-06-28 01:50:21,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:21,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460012467] [2024-06-28 01:50:21,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:21,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:22,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:22,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460012467] [2024-06-28 01:50:22,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460012467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:22,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:22,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:22,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757916668] [2024-06-28 01:50:22,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:22,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:22,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:22,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:22,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:22,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:50:22,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 562 transitions, 9560 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:22,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:22,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:50:22,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:24,422 INFO L124 PetriNetUnfolderBase]: 3080/5380 cut-off events. [2024-06-28 01:50:24,422 INFO L125 PetriNetUnfolderBase]: For 329617/329617 co-relation queries the response was YES. [2024-06-28 01:50:24,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39364 conditions, 5380 events. 3080/5380 cut-off events. For 329617/329617 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 36480 event pairs, 816 based on Foata normal form. 12/5160 useless extension candidates. Maximal degree in co-relation 39131. Up to 4115 conditions per place. [2024-06-28 01:50:24,522 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 393 selfloop transitions, 195 changer transitions 0/595 dead transitions. [2024-06-28 01:50:24,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 595 transitions, 11082 flow [2024-06-28 01:50:24,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:50:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:50:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 01:50:24,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-28 01:50:24,524 INFO L175 Difference]: Start difference. First operand has 483 places, 562 transitions, 9560 flow. Second operand 11 states and 177 transitions. [2024-06-28 01:50:24,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 595 transitions, 11082 flow [2024-06-28 01:50:27,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 595 transitions, 10661 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-28 01:50:27,120 INFO L231 Difference]: Finished difference. Result has 486 places, 564 transitions, 9684 flow [2024-06-28 01:50:27,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9139, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9684, PETRI_PLACES=486, PETRI_TRANSITIONS=564} [2024-06-28 01:50:27,120 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 445 predicate places. [2024-06-28 01:50:27,120 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 564 transitions, 9684 flow [2024-06-28 01:50:27,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:27,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:27,121 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 01:50:27,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 01:50:27,121 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:27,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:27,122 INFO L85 PathProgramCache]: Analyzing trace with hash 565618016, now seen corresponding path program 6 times [2024-06-28 01:50:27,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:27,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097468232] [2024-06-28 01:50:27,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:27,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:28,302 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 01:50:28,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:28,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097468232] [2024-06-28 01:50:28,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097468232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:28,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:28,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:28,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56116415] [2024-06-28 01:50:28,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:28,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:28,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:28,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:28,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:28,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:50:28,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 564 transitions, 9684 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:28,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:28,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:50:28,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:30,238 INFO L124 PetriNetUnfolderBase]: 3093/5398 cut-off events. [2024-06-28 01:50:30,238 INFO L125 PetriNetUnfolderBase]: For 252634/252634 co-relation queries the response was YES. [2024-06-28 01:50:30,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39498 conditions, 5398 events. 3093/5398 cut-off events. For 252634/252634 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 36591 event pairs, 804 based on Foata normal form. 2/5164 useless extension candidates. Maximal degree in co-relation 39264. Up to 4299 conditions per place. [2024-06-28 01:50:30,326 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 367 selfloop transitions, 216 changer transitions 0/590 dead transitions. [2024-06-28 01:50:30,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 590 transitions, 11038 flow [2024-06-28 01:50:30,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:50:30,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:50:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-28 01:50:30,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103194103194103 [2024-06-28 01:50:30,327 INFO L175 Difference]: Start difference. First operand has 486 places, 564 transitions, 9684 flow. Second operand 11 states and 167 transitions. [2024-06-28 01:50:30,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 590 transitions, 11038 flow [2024-06-28 01:50:32,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 590 transitions, 10537 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-28 01:50:32,717 INFO L231 Difference]: Finished difference. Result has 488 places, 566 transitions, 9674 flow [2024-06-28 01:50:32,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9183, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9674, PETRI_PLACES=488, PETRI_TRANSITIONS=566} [2024-06-28 01:50:32,718 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 447 predicate places. [2024-06-28 01:50:32,718 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 566 transitions, 9674 flow [2024-06-28 01:50:32,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:32,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:32,718 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 01:50:32,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 01:50:32,718 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:32,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:32,719 INFO L85 PathProgramCache]: Analyzing trace with hash 310091472, now seen corresponding path program 35 times [2024-06-28 01:50:32,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:32,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954211172] [2024-06-28 01:50:32,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:32,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:33,705 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 01:50:33,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:33,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954211172] [2024-06-28 01:50:33,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954211172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:33,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:33,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:33,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635601024] [2024-06-28 01:50:33,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:33,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:33,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:33,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:33,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:33,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:50:33,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 566 transitions, 9674 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:33,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:33,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:50:33,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:35,566 INFO L124 PetriNetUnfolderBase]: 3090/5393 cut-off events. [2024-06-28 01:50:35,566 INFO L125 PetriNetUnfolderBase]: For 222793/222793 co-relation queries the response was YES. [2024-06-28 01:50:35,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38609 conditions, 5393 events. 3090/5393 cut-off events. For 222793/222793 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 36581 event pairs, 815 based on Foata normal form. 2/5163 useless extension candidates. Maximal degree in co-relation 38374. Up to 4538 conditions per place. [2024-06-28 01:50:35,648 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 425 selfloop transitions, 159 changer transitions 0/591 dead transitions. [2024-06-28 01:50:35,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 591 transitions, 10986 flow [2024-06-28 01:50:35,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:50:35,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:50:35,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:50:35,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-28 01:50:35,649 INFO L175 Difference]: Start difference. First operand has 488 places, 566 transitions, 9674 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:50:35,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 591 transitions, 10986 flow [2024-06-28 01:50:37,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 591 transitions, 10431 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-28 01:50:37,909 INFO L231 Difference]: Finished difference. Result has 489 places, 566 transitions, 9442 flow [2024-06-28 01:50:37,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9119, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9442, PETRI_PLACES=489, PETRI_TRANSITIONS=566} [2024-06-28 01:50:37,909 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 448 predicate places. [2024-06-28 01:50:37,909 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 566 transitions, 9442 flow [2024-06-28 01:50:37,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:37,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:37,909 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 01:50:37,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 01:50:37,910 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:37,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash 891014197, now seen corresponding path program 7 times [2024-06-28 01:50:37,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:37,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123493833] [2024-06-28 01:50:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:37,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:38,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:38,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:38,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123493833] [2024-06-28 01:50:38,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123493833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:38,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:38,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:38,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33733135] [2024-06-28 01:50:38,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:38,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:38,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:38,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:38,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:38,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:50:38,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 566 transitions, 9442 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:38,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:38,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:50:38,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:40,814 INFO L124 PetriNetUnfolderBase]: 3106/5432 cut-off events. [2024-06-28 01:50:40,814 INFO L125 PetriNetUnfolderBase]: For 226818/226818 co-relation queries the response was YES. [2024-06-28 01:50:40,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38614 conditions, 5432 events. 3106/5432 cut-off events. For 226818/226818 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 36974 event pairs, 1199 based on Foata normal form. 2/5199 useless extension candidates. Maximal degree in co-relation 38378. Up to 4984 conditions per place. [2024-06-28 01:50:40,903 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 562 selfloop transitions, 31 changer transitions 0/600 dead transitions. [2024-06-28 01:50:40,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 600 transitions, 10984 flow [2024-06-28 01:50:40,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:50:40,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:50:40,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 177 transitions. [2024-06-28 01:50:40,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39864864864864863 [2024-06-28 01:50:40,904 INFO L175 Difference]: Start difference. First operand has 489 places, 566 transitions, 9442 flow. Second operand 12 states and 177 transitions. [2024-06-28 01:50:40,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 600 transitions, 10984 flow [2024-06-28 01:50:43,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 600 transitions, 10598 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 01:50:43,335 INFO L231 Difference]: Finished difference. Result has 492 places, 568 transitions, 9275 flow [2024-06-28 01:50:43,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9056, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9275, PETRI_PLACES=492, PETRI_TRANSITIONS=568} [2024-06-28 01:50:43,336 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 451 predicate places. [2024-06-28 01:50:43,336 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 568 transitions, 9275 flow [2024-06-28 01:50:43,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:43,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:43,336 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 01:50:43,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 01:50:43,336 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:43,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:43,337 INFO L85 PathProgramCache]: Analyzing trace with hash 565887127, now seen corresponding path program 8 times [2024-06-28 01:50:43,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:43,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782275775] [2024-06-28 01:50:43,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:43,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:44,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:44,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782275775] [2024-06-28 01:50:44,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782275775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:44,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:44,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:44,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904578519] [2024-06-28 01:50:44,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:44,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:44,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:44,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:44,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:44,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:50:44,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 568 transitions, 9275 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:44,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:44,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:50:44,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:46,246 INFO L124 PetriNetUnfolderBase]: 3167/5542 cut-off events. [2024-06-28 01:50:46,246 INFO L125 PetriNetUnfolderBase]: For 306207/306207 co-relation queries the response was YES. [2024-06-28 01:50:46,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38585 conditions, 5542 events. 3167/5542 cut-off events. For 306207/306207 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 37832 event pairs, 830 based on Foata normal form. 14/5320 useless extension candidates. Maximal degree in co-relation 38348. Up to 4261 conditions per place. [2024-06-28 01:50:46,335 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 374 selfloop transitions, 220 changer transitions 0/601 dead transitions. [2024-06-28 01:50:46,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 601 transitions, 10817 flow [2024-06-28 01:50:46,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:50:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:50:46,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 01:50:46,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-28 01:50:46,336 INFO L175 Difference]: Start difference. First operand has 492 places, 568 transitions, 9275 flow. Second operand 11 states and 177 transitions. [2024-06-28 01:50:46,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 601 transitions, 10817 flow [2024-06-28 01:50:48,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 601 transitions, 10584 flow, removed 87 selfloop flow, removed 10 redundant places. [2024-06-28 01:50:48,633 INFO L231 Difference]: Finished difference. Result has 494 places, 570 transitions, 9658 flow [2024-06-28 01:50:48,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9042, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9658, PETRI_PLACES=494, PETRI_TRANSITIONS=570} [2024-06-28 01:50:48,633 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 453 predicate places. [2024-06-28 01:50:48,634 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 570 transitions, 9658 flow [2024-06-28 01:50:48,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:48,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:48,634 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 01:50:48,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 01:50:48,634 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:48,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:48,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1889763397, now seen corresponding path program 1 times [2024-06-28 01:50:48,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:48,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236562252] [2024-06-28 01:50:48,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:48,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:49,375 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 01:50:49,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:49,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236562252] [2024-06-28 01:50:49,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236562252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:49,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:49,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:50:49,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885158481] [2024-06-28 01:50:49,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:49,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:50:49,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:49,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:50:49,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:50:49,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:50:49,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 570 transitions, 9658 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:49,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:49,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:50:49,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:51,455 INFO L124 PetriNetUnfolderBase]: 3183/5572 cut-off events. [2024-06-28 01:50:51,456 INFO L125 PetriNetUnfolderBase]: For 211538/211538 co-relation queries the response was YES. [2024-06-28 01:50:51,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39238 conditions, 5572 events. 3183/5572 cut-off events. For 211538/211538 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 38206 event pairs, 999 based on Foata normal form. 2/5338 useless extension candidates. Maximal degree in co-relation 38999. Up to 5107 conditions per place. [2024-06-28 01:50:51,548 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 541 selfloop transitions, 63 changer transitions 0/611 dead transitions. [2024-06-28 01:50:51,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 611 transitions, 11196 flow [2024-06-28 01:50:51,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:50:51,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:50:51,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 185 transitions. [2024-06-28 01:50:51,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 01:50:51,550 INFO L175 Difference]: Start difference. First operand has 494 places, 570 transitions, 9658 flow. Second operand 12 states and 185 transitions. [2024-06-28 01:50:51,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 611 transitions, 11196 flow [2024-06-28 01:50:54,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 611 transitions, 10619 flow, removed 64 selfloop flow, removed 9 redundant places. [2024-06-28 01:50:54,187 INFO L231 Difference]: Finished difference. Result has 497 places, 572 transitions, 9348 flow [2024-06-28 01:50:54,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9081, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9348, PETRI_PLACES=497, PETRI_TRANSITIONS=572} [2024-06-28 01:50:54,188 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 456 predicate places. [2024-06-28 01:50:54,188 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 572 transitions, 9348 flow [2024-06-28 01:50:54,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:54,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:54,188 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 01:50:54,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 01:50:54,188 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:54,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:54,189 INFO L85 PathProgramCache]: Analyzing trace with hash -122518829, now seen corresponding path program 2 times [2024-06-28 01:50:54,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:54,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499130180] [2024-06-28 01:50:54,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:54,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:54,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:54,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499130180] [2024-06-28 01:50:54,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499130180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:54,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:54,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:50:54,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408929338] [2024-06-28 01:50:54,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:54,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:50:54,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:54,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:50:54,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:50:55,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:50:55,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 572 transitions, 9348 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:55,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:55,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:50:55,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:56,818 INFO L124 PetriNetUnfolderBase]: 3207/5614 cut-off events. [2024-06-28 01:50:56,819 INFO L125 PetriNetUnfolderBase]: For 198185/198185 co-relation queries the response was YES. [2024-06-28 01:50:56,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38495 conditions, 5614 events. 3207/5614 cut-off events. For 198185/198185 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 38492 event pairs, 856 based on Foata normal form. 2/5380 useless extension candidates. Maximal degree in co-relation 38255. Up to 5098 conditions per place. [2024-06-28 01:50:56,906 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 540 selfloop transitions, 69 changer transitions 0/616 dead transitions. [2024-06-28 01:50:56,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 616 transitions, 11044 flow [2024-06-28 01:50:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:50:56,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:50:56,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 185 transitions. [2024-06-28 01:50:56,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 01:50:56,917 INFO L175 Difference]: Start difference. First operand has 497 places, 572 transitions, 9348 flow. Second operand 12 states and 185 transitions. [2024-06-28 01:50:56,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 616 transitions, 11044 flow [2024-06-28 01:50:59,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 616 transitions, 10669 flow, removed 126 selfloop flow, removed 10 redundant places. [2024-06-28 01:50:59,369 INFO L231 Difference]: Finished difference. Result has 499 places, 576 transitions, 9398 flow [2024-06-28 01:50:59,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9101, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9398, PETRI_PLACES=499, PETRI_TRANSITIONS=576} [2024-06-28 01:50:59,370 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 458 predicate places. [2024-06-28 01:50:59,370 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 576 transitions, 9398 flow [2024-06-28 01:50:59,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:59,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:59,370 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 01:50:59,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 01:50:59,370 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:59,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:59,371 INFO L85 PathProgramCache]: Analyzing trace with hash 649344331, now seen corresponding path program 3 times [2024-06-28 01:50:59,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:59,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790330673] [2024-06-28 01:50:59,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:59,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:00,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:00,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:00,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790330673] [2024-06-28 01:51:00,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790330673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:00,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:00,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:51:00,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988338548] [2024-06-28 01:51:00,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:00,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:51:00,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:00,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:51:00,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:51:00,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:51:00,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 576 transitions, 9398 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:00,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:00,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:51:00,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:02,224 INFO L124 PetriNetUnfolderBase]: 3242/5677 cut-off events. [2024-06-28 01:51:02,224 INFO L125 PetriNetUnfolderBase]: For 217816/217816 co-relation queries the response was YES. [2024-06-28 01:51:02,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39210 conditions, 5677 events. 3242/5677 cut-off events. For 217816/217816 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 39096 event pairs, 1035 based on Foata normal form. 2/5447 useless extension candidates. Maximal degree in co-relation 38969. Up to 5135 conditions per place. [2024-06-28 01:51:02,318 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 524 selfloop transitions, 85 changer transitions 0/616 dead transitions. [2024-06-28 01:51:02,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 616 transitions, 11344 flow [2024-06-28 01:51:02,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:51:02,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:51:02,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-28 01:51:02,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 01:51:02,320 INFO L175 Difference]: Start difference. First operand has 499 places, 576 transitions, 9398 flow. Second operand 12 states and 186 transitions. [2024-06-28 01:51:02,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 616 transitions, 11344 flow [2024-06-28 01:51:04,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 616 transitions, 11087 flow, removed 63 selfloop flow, removed 10 redundant places. [2024-06-28 01:51:04,894 INFO L231 Difference]: Finished difference. Result has 501 places, 580 transitions, 9597 flow [2024-06-28 01:51:04,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9141, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9597, PETRI_PLACES=501, PETRI_TRANSITIONS=580} [2024-06-28 01:51:04,895 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 460 predicate places. [2024-06-28 01:51:04,895 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 580 transitions, 9597 flow [2024-06-28 01:51:04,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:04,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:04,895 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 01:51:04,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 01:51:04,896 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:04,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:04,896 INFO L85 PathProgramCache]: Analyzing trace with hash 811109461, now seen corresponding path program 4 times [2024-06-28 01:51:04,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:04,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311481449] [2024-06-28 01:51:04,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:04,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:05,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:05,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:05,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311481449] [2024-06-28 01:51:05,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311481449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:05,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:05,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:51:05,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840409136] [2024-06-28 01:51:05,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:05,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:51:05,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:05,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:51:05,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:51:05,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:51:05,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 580 transitions, 9597 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:05,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:05,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:51:05,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:07,801 INFO L124 PetriNetUnfolderBase]: 3258/5703 cut-off events. [2024-06-28 01:51:07,801 INFO L125 PetriNetUnfolderBase]: For 224428/224428 co-relation queries the response was YES. [2024-06-28 01:51:07,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39437 conditions, 5703 events. 3258/5703 cut-off events. For 224428/224428 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 39260 event pairs, 1036 based on Foata normal form. 2/5470 useless extension candidates. Maximal degree in co-relation 39195. Up to 5007 conditions per place. [2024-06-28 01:51:07,898 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 524 selfloop transitions, 89 changer transitions 0/620 dead transitions. [2024-06-28 01:51:07,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 620 transitions, 11431 flow [2024-06-28 01:51:07,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:51:07,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:51:07,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-28 01:51:07,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42792792792792794 [2024-06-28 01:51:07,900 INFO L175 Difference]: Start difference. First operand has 501 places, 580 transitions, 9597 flow. Second operand 12 states and 190 transitions. [2024-06-28 01:51:07,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 620 transitions, 11431 flow [2024-06-28 01:51:10,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 620 transitions, 11175 flow, removed 77 selfloop flow, removed 8 redundant places. [2024-06-28 01:51:10,473 INFO L231 Difference]: Finished difference. Result has 505 places, 582 transitions, 9671 flow [2024-06-28 01:51:10,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9341, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9671, PETRI_PLACES=505, PETRI_TRANSITIONS=582} [2024-06-28 01:51:10,473 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 464 predicate places. [2024-06-28 01:51:10,473 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 582 transitions, 9671 flow [2024-06-28 01:51:10,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:10,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:10,474 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 01:51:10,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 01:51:10,474 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:10,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:10,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1896779333, now seen corresponding path program 5 times [2024-06-28 01:51:10,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:10,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300808278] [2024-06-28 01:51:10,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:10,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:11,411 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 01:51:11,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:11,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300808278] [2024-06-28 01:51:11,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300808278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:11,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:11,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:51:11,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507909617] [2024-06-28 01:51:11,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:11,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:51:11,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:11,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:51:11,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:51:11,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:51:11,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 582 transitions, 9671 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:11,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:11,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:51:11,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:13,400 INFO L124 PetriNetUnfolderBase]: 3274/5734 cut-off events. [2024-06-28 01:51:13,400 INFO L125 PetriNetUnfolderBase]: For 226440/226440 co-relation queries the response was YES. [2024-06-28 01:51:13,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39748 conditions, 5734 events. 3274/5734 cut-off events. For 226440/226440 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 39591 event pairs, 1083 based on Foata normal form. 2/5503 useless extension candidates. Maximal degree in co-relation 39504. Up to 5291 conditions per place. [2024-06-28 01:51:13,496 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 526 selfloop transitions, 85 changer transitions 0/618 dead transitions. [2024-06-28 01:51:13,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 618 transitions, 11463 flow [2024-06-28 01:51:13,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:51:13,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:51:13,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 182 transitions. [2024-06-28 01:51:13,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099099099099099 [2024-06-28 01:51:13,498 INFO L175 Difference]: Start difference. First operand has 505 places, 582 transitions, 9671 flow. Second operand 12 states and 182 transitions. [2024-06-28 01:51:13,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 618 transitions, 11463 flow [2024-06-28 01:51:16,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 618 transitions, 11147 flow, removed 69 selfloop flow, removed 10 redundant places. [2024-06-28 01:51:16,445 INFO L231 Difference]: Finished difference. Result has 507 places, 584 transitions, 9657 flow [2024-06-28 01:51:16,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9359, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9657, PETRI_PLACES=507, PETRI_TRANSITIONS=584} [2024-06-28 01:51:16,445 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 466 predicate places. [2024-06-28 01:51:16,445 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 584 transitions, 9657 flow [2024-06-28 01:51:16,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:16,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:16,446 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 01:51:16,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 01:51:16,446 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:16,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:16,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1896772823, now seen corresponding path program 6 times [2024-06-28 01:51:16,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:16,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242036076] [2024-06-28 01:51:16,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:16,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:17,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:17,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242036076] [2024-06-28 01:51:17,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242036076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:17,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:17,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:51:17,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761284335] [2024-06-28 01:51:17,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:17,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:51:17,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:17,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:51:17,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:51:17,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:51:17,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 584 transitions, 9657 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:17,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:17,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:51:17,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:19,329 INFO L124 PetriNetUnfolderBase]: 3271/5730 cut-off events. [2024-06-28 01:51:19,329 INFO L125 PetriNetUnfolderBase]: For 206078/206078 co-relation queries the response was YES. [2024-06-28 01:51:19,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39157 conditions, 5730 events. 3271/5730 cut-off events. For 206078/206078 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 39551 event pairs, 1098 based on Foata normal form. 2/5498 useless extension candidates. Maximal degree in co-relation 38912. Up to 5361 conditions per place. [2024-06-28 01:51:19,428 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 523 selfloop transitions, 85 changer transitions 0/615 dead transitions. [2024-06-28 01:51:19,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 615 transitions, 11035 flow [2024-06-28 01:51:19,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:51:19,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:51:19,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 177 transitions. [2024-06-28 01:51:19,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39864864864864863 [2024-06-28 01:51:19,429 INFO L175 Difference]: Start difference. First operand has 507 places, 584 transitions, 9657 flow. Second operand 12 states and 177 transitions. [2024-06-28 01:51:19,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 615 transitions, 11035 flow [2024-06-28 01:51:21,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 615 transitions, 10635 flow, removed 112 selfloop flow, removed 10 redundant places. [2024-06-28 01:51:21,898 INFO L231 Difference]: Finished difference. Result has 509 places, 584 transitions, 9437 flow [2024-06-28 01:51:21,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9257, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9437, PETRI_PLACES=509, PETRI_TRANSITIONS=584} [2024-06-28 01:51:21,899 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 468 predicate places. [2024-06-28 01:51:21,911 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 584 transitions, 9437 flow [2024-06-28 01:51:21,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:21,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:21,915 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 01:51:21,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 01:51:21,915 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:21,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:21,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1874382143, now seen corresponding path program 7 times [2024-06-28 01:51:21,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:21,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429067555] [2024-06-28 01:51:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:21,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:22,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:22,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:22,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429067555] [2024-06-28 01:51:22,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429067555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:22,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:22,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:51:22,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584199891] [2024-06-28 01:51:22,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:22,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:51:22,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:22,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:51:22,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:51:22,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:51:22,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 584 transitions, 9437 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:22,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:22,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:51:22,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:24,906 INFO L124 PetriNetUnfolderBase]: 3306/5784 cut-off events. [2024-06-28 01:51:24,906 INFO L125 PetriNetUnfolderBase]: For 205244/205244 co-relation queries the response was YES. [2024-06-28 01:51:24,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39201 conditions, 5784 events. 3306/5784 cut-off events. For 205244/205244 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 39958 event pairs, 969 based on Foata normal form. 2/5548 useless extension candidates. Maximal degree in co-relation 38955. Up to 5305 conditions per place. [2024-06-28 01:51:25,008 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 555 selfloop transitions, 65 changer transitions 0/627 dead transitions. [2024-06-28 01:51:25,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 627 transitions, 11035 flow [2024-06-28 01:51:25,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:51:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:51:25,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-28 01:51:25,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 01:51:25,010 INFO L175 Difference]: Start difference. First operand has 509 places, 584 transitions, 9437 flow. Second operand 12 states and 186 transitions. [2024-06-28 01:51:25,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 627 transitions, 11035 flow [2024-06-28 01:51:27,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 627 transitions, 10851 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 01:51:27,650 INFO L231 Difference]: Finished difference. Result has 510 places, 590 transitions, 9576 flow [2024-06-28 01:51:27,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9253, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9576, PETRI_PLACES=510, PETRI_TRANSITIONS=590} [2024-06-28 01:51:27,651 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 469 predicate places. [2024-06-28 01:51:27,651 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 590 transitions, 9576 flow [2024-06-28 01:51:27,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:27,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:27,651 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 01:51:27,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 01:51:27,651 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:27,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:27,652 INFO L85 PathProgramCache]: Analyzing trace with hash -592013573, now seen corresponding path program 8 times [2024-06-28 01:51:27,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:27,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968795585] [2024-06-28 01:51:27,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:27,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:28,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:28,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968795585] [2024-06-28 01:51:28,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968795585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:28,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:28,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:51:28,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790139701] [2024-06-28 01:51:28,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:28,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:51:28,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:28,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:51:28,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:51:28,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:51:28,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 590 transitions, 9576 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:28,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:28,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:51:28,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:30,697 INFO L124 PetriNetUnfolderBase]: 3381/5919 cut-off events. [2024-06-28 01:51:30,697 INFO L125 PetriNetUnfolderBase]: For 236948/236948 co-relation queries the response was YES. [2024-06-28 01:51:30,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40644 conditions, 5919 events. 3381/5919 cut-off events. For 236948/236948 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 41163 event pairs, 1050 based on Foata normal form. 2/5688 useless extension candidates. Maximal degree in co-relation 40397. Up to 5206 conditions per place. [2024-06-28 01:51:30,804 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 538 selfloop transitions, 93 changer transitions 0/638 dead transitions. [2024-06-28 01:51:30,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 638 transitions, 11638 flow [2024-06-28 01:51:30,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:51:30,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:51:30,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 191 transitions. [2024-06-28 01:51:30,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43018018018018017 [2024-06-28 01:51:30,806 INFO L175 Difference]: Start difference. First operand has 510 places, 590 transitions, 9576 flow. Second operand 12 states and 191 transitions. [2024-06-28 01:51:30,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 638 transitions, 11638 flow [2024-06-28 01:51:33,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 638 transitions, 11383 flow, removed 67 selfloop flow, removed 10 redundant places. [2024-06-28 01:51:33,905 INFO L231 Difference]: Finished difference. Result has 513 places, 602 transitions, 9915 flow [2024-06-28 01:51:33,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9321, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9915, PETRI_PLACES=513, PETRI_TRANSITIONS=602} [2024-06-28 01:51:33,905 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 472 predicate places. [2024-06-28 01:51:33,905 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 602 transitions, 9915 flow [2024-06-28 01:51:33,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:33,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:33,906 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 01:51:33,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 01:51:33,906 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:33,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:33,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1978548019, now seen corresponding path program 9 times [2024-06-28 01:51:33,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:33,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412597488] [2024-06-28 01:51:33,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:33,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:34,908 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 01:51:34,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:34,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412597488] [2024-06-28 01:51:34,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412597488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:34,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:34,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:51:34,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969621708] [2024-06-28 01:51:34,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:34,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:51:34,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:34,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:51:34,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:51:35,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:51:35,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 602 transitions, 9915 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:35,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:35,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:51:35,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:36,973 INFO L124 PetriNetUnfolderBase]: 3416/5981 cut-off events. [2024-06-28 01:51:36,973 INFO L125 PetriNetUnfolderBase]: For 266186/266186 co-relation queries the response was YES. [2024-06-28 01:51:37,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41843 conditions, 5981 events. 3416/5981 cut-off events. For 266186/266186 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 41683 event pairs, 1084 based on Foata normal form. 2/5746 useless extension candidates. Maximal degree in co-relation 41594. Up to 5525 conditions per place. [2024-06-28 01:51:37,093 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 544 selfloop transitions, 87 changer transitions 0/638 dead transitions. [2024-06-28 01:51:37,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 638 transitions, 11929 flow [2024-06-28 01:51:37,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:51:37,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:51:37,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 183 transitions. [2024-06-28 01:51:37,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41216216216216217 [2024-06-28 01:51:37,095 INFO L175 Difference]: Start difference. First operand has 513 places, 602 transitions, 9915 flow. Second operand 12 states and 183 transitions. [2024-06-28 01:51:37,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 638 transitions, 11929 flow [2024-06-28 01:51:40,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 638 transitions, 11635 flow, removed 101 selfloop flow, removed 8 redundant places. [2024-06-28 01:51:40,323 INFO L231 Difference]: Finished difference. Result has 517 places, 606 transitions, 10119 flow [2024-06-28 01:51:40,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9661, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10119, PETRI_PLACES=517, PETRI_TRANSITIONS=606} [2024-06-28 01:51:40,324 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 476 predicate places. [2024-06-28 01:51:40,324 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 606 transitions, 10119 flow [2024-06-28 01:51:40,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:40,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:40,324 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 01:51:40,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 01:51:40,324 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:40,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:40,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1978554529, now seen corresponding path program 10 times [2024-06-28 01:51:40,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:40,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048342148] [2024-06-28 01:51:40,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:40,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:41,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:41,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048342148] [2024-06-28 01:51:41,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048342148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:41,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:41,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:51:41,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356517277] [2024-06-28 01:51:41,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:41,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:51:41,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:41,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:51:41,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:51:41,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:51:41,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 606 transitions, 10119 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:41,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:41,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:51:41,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:43,256 INFO L124 PetriNetUnfolderBase]: 3413/5976 cut-off events. [2024-06-28 01:51:43,256 INFO L125 PetriNetUnfolderBase]: For 241715/241715 co-relation queries the response was YES. [2024-06-28 01:51:43,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41349 conditions, 5976 events. 3413/5976 cut-off events. For 241715/241715 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 41632 event pairs, 1101 based on Foata normal form. 2/5739 useless extension candidates. Maximal degree in co-relation 41098. Up to 5603 conditions per place. [2024-06-28 01:51:43,367 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 543 selfloop transitions, 85 changer transitions 0/635 dead transitions. [2024-06-28 01:51:43,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 635 transitions, 11525 flow [2024-06-28 01:51:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:51:43,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:51:43,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 178 transitions. [2024-06-28 01:51:43,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009009009009009 [2024-06-28 01:51:43,368 INFO L175 Difference]: Start difference. First operand has 517 places, 606 transitions, 10119 flow. Second operand 12 states and 178 transitions. [2024-06-28 01:51:43,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 635 transitions, 11525 flow [2024-06-28 01:51:46,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 635 transitions, 11163 flow, removed 120 selfloop flow, removed 9 redundant places. [2024-06-28 01:51:46,332 INFO L231 Difference]: Finished difference. Result has 520 places, 606 transitions, 9939 flow [2024-06-28 01:51:46,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9757, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9939, PETRI_PLACES=520, PETRI_TRANSITIONS=606} [2024-06-28 01:51:46,333 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 479 predicate places. [2024-06-28 01:51:46,333 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 606 transitions, 9939 flow [2024-06-28 01:51:46,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:46,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:46,333 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 01:51:46,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 01:51:46,334 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:46,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:46,334 INFO L85 PathProgramCache]: Analyzing trace with hash -587544923, now seen corresponding path program 11 times [2024-06-28 01:51:46,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:46,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974356044] [2024-06-28 01:51:46,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:46,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:47,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:47,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974356044] [2024-06-28 01:51:47,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974356044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:47,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:47,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:51:47,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521153663] [2024-06-28 01:51:47,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:47,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:51:47,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:47,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:51:47,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:51:47,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:51:47,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 606 transitions, 9939 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:47,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:47,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:51:47,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:49,285 INFO L124 PetriNetUnfolderBase]: 3410/5971 cut-off events. [2024-06-28 01:51:49,285 INFO L125 PetriNetUnfolderBase]: For 216689/216689 co-relation queries the response was YES. [2024-06-28 01:51:49,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40720 conditions, 5971 events. 3410/5971 cut-off events. For 216689/216689 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 41562 event pairs, 1064 based on Foata normal form. 2/5738 useless extension candidates. Maximal degree in co-relation 40467. Up to 5396 conditions per place. [2024-06-28 01:51:49,394 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 541 selfloop transitions, 91 changer transitions 0/639 dead transitions. [2024-06-28 01:51:49,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 639 transitions, 11377 flow [2024-06-28 01:51:49,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:51:49,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:51:49,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-28 01:51:49,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 01:51:49,395 INFO L175 Difference]: Start difference. First operand has 520 places, 606 transitions, 9939 flow. Second operand 12 states and 186 transitions. [2024-06-28 01:51:49,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 639 transitions, 11377 flow [2024-06-28 01:51:52,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 639 transitions, 11083 flow, removed 57 selfloop flow, removed 11 redundant places. [2024-06-28 01:51:52,380 INFO L231 Difference]: Finished difference. Result has 521 places, 606 transitions, 9835 flow [2024-06-28 01:51:52,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9645, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9835, PETRI_PLACES=521, PETRI_TRANSITIONS=606} [2024-06-28 01:51:52,380 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 480 predicate places. [2024-06-28 01:51:52,380 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 606 transitions, 9835 flow [2024-06-28 01:51:52,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:52,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:52,381 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 01:51:52,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 01:51:52,381 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:52,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:52,381 INFO L85 PathProgramCache]: Analyzing trace with hash -685002745, now seen corresponding path program 12 times [2024-06-28 01:51:52,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:52,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955141650] [2024-06-28 01:51:52,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:52,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:53,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:53,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:53,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955141650] [2024-06-28 01:51:53,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955141650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:53,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:53,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:51:53,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631982107] [2024-06-28 01:51:53,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:53,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:51:53,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:53,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:51:53,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:51:53,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:51:53,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 606 transitions, 9835 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:53,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:53,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:51:53,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:55,438 INFO L124 PetriNetUnfolderBase]: 3426/5999 cut-off events. [2024-06-28 01:51:55,438 INFO L125 PetriNetUnfolderBase]: For 219916/219916 co-relation queries the response was YES. [2024-06-28 01:51:55,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40963 conditions, 5999 events. 3426/5999 cut-off events. For 219916/219916 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 41821 event pairs, 1076 based on Foata normal form. 2/5761 useless extension candidates. Maximal degree in co-relation 40709. Up to 5307 conditions per place. [2024-06-28 01:51:55,550 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 484 selfloop transitions, 147 changer transitions 0/638 dead transitions. [2024-06-28 01:51:55,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 638 transitions, 11413 flow [2024-06-28 01:51:55,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:51:55,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:51:55,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-06-28 01:51:55,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144144144144144 [2024-06-28 01:51:55,551 INFO L175 Difference]: Start difference. First operand has 521 places, 606 transitions, 9835 flow. Second operand 12 states and 184 transitions. [2024-06-28 01:51:55,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 638 transitions, 11413 flow [2024-06-28 01:51:58,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 638 transitions, 11131 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 01:51:58,589 INFO L231 Difference]: Finished difference. Result has 521 places, 608 transitions, 10011 flow [2024-06-28 01:51:58,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9553, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10011, PETRI_PLACES=521, PETRI_TRANSITIONS=608} [2024-06-28 01:51:58,590 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 480 predicate places. [2024-06-28 01:51:58,590 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 608 transitions, 10011 flow [2024-06-28 01:51:58,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:58,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:58,590 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 01:51:58,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 01:51:58,590 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:58,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:58,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1083015345, now seen corresponding path program 13 times [2024-06-28 01:51:58,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:58,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505098559] [2024-06-28 01:51:58,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:58,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:59,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:59,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:59,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505098559] [2024-06-28 01:51:59,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505098559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:59,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:59,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:51:59,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371437288] [2024-06-28 01:51:59,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:59,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:51:59,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:59,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:51:59,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:51:59,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:51:59,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 608 transitions, 10011 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:59,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:59,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:51:59,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:01,721 INFO L124 PetriNetUnfolderBase]: 3542/6217 cut-off events. [2024-06-28 01:52:01,721 INFO L125 PetriNetUnfolderBase]: For 371174/371174 co-relation queries the response was YES. [2024-06-28 01:52:01,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44775 conditions, 6217 events. 3542/6217 cut-off events. For 371174/371174 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 43744 event pairs, 1112 based on Foata normal form. 2/5979 useless extension candidates. Maximal degree in co-relation 44521. Up to 5291 conditions per place. [2024-06-28 01:52:01,853 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 491 selfloop transitions, 151 changer transitions 0/649 dead transitions. [2024-06-28 01:52:01,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 649 transitions, 12117 flow [2024-06-28 01:52:01,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:52:01,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:52:01,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-28 01:52:01,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 01:52:01,855 INFO L175 Difference]: Start difference. First operand has 521 places, 608 transitions, 10011 flow. Second operand 12 states and 192 transitions. [2024-06-28 01:52:01,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 649 transitions, 12117 flow [2024-06-28 01:52:06,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 649 transitions, 11677 flow, removed 75 selfloop flow, removed 10 redundant places. [2024-06-28 01:52:06,208 INFO L231 Difference]: Finished difference. Result has 523 places, 612 transitions, 10198 flow [2024-06-28 01:52:06,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9571, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10198, PETRI_PLACES=523, PETRI_TRANSITIONS=612} [2024-06-28 01:52:06,208 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 482 predicate places. [2024-06-28 01:52:06,208 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 612 transitions, 10198 flow [2024-06-28 01:52:06,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:06,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:06,209 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 01:52:06,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 01:52:06,209 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:06,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:06,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1077052943, now seen corresponding path program 1 times [2024-06-28 01:52:06,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:06,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980242138] [2024-06-28 01:52:06,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:06,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:07,051 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 01:52:07,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:07,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980242138] [2024-06-28 01:52:07,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980242138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:07,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:07,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:52:07,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309122863] [2024-06-28 01:52:07,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:07,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:52:07,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:07,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:52:07,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:52:07,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:52:07,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 612 transitions, 10198 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:07,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:07,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:52:07,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:09,230 INFO L124 PetriNetUnfolderBase]: 3656/6437 cut-off events. [2024-06-28 01:52:09,231 INFO L125 PetriNetUnfolderBase]: For 544219/544219 co-relation queries the response was YES. [2024-06-28 01:52:09,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47784 conditions, 6437 events. 3656/6437 cut-off events. For 544219/544219 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 45717 event pairs, 1157 based on Foata normal form. 8/6209 useless extension candidates. Maximal degree in co-relation 47529. Up to 5051 conditions per place. [2024-06-28 01:52:09,361 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 488 selfloop transitions, 160 changer transitions 0/655 dead transitions. [2024-06-28 01:52:09,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 655 transitions, 12326 flow [2024-06-28 01:52:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:52:09,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:52:09,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-28 01:52:09,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 01:52:09,363 INFO L175 Difference]: Start difference. First operand has 523 places, 612 transitions, 10198 flow. Second operand 12 states and 192 transitions. [2024-06-28 01:52:09,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 655 transitions, 12326 flow [2024-06-28 01:52:14,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 655 transitions, 11942 flow, removed 90 selfloop flow, removed 8 redundant places. [2024-06-28 01:52:14,229 INFO L231 Difference]: Finished difference. Result has 527 places, 614 transitions, 10384 flow [2024-06-28 01:52:14,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9814, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10384, PETRI_PLACES=527, PETRI_TRANSITIONS=614} [2024-06-28 01:52:14,229 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 486 predicate places. [2024-06-28 01:52:14,229 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 614 transitions, 10384 flow [2024-06-28 01:52:14,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:14,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:14,230 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 01:52:14,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 01:52:14,230 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:14,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:14,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1098043341, now seen corresponding path program 14 times [2024-06-28 01:52:14,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:14,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116087490] [2024-06-28 01:52:14,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:14,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:15,302 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 01:52:15,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:15,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116087490] [2024-06-28 01:52:15,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116087490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:15,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:15,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:52:15,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312642961] [2024-06-28 01:52:15,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:15,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:52:15,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:15,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:52:15,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:52:15,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:52:15,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 614 transitions, 10384 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:15,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:15,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:52:15,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:17,711 INFO L124 PetriNetUnfolderBase]: 3672/6466 cut-off events. [2024-06-28 01:52:17,711 INFO L125 PetriNetUnfolderBase]: For 485138/485138 co-relation queries the response was YES. [2024-06-28 01:52:17,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48110 conditions, 6466 events. 3672/6466 cut-off events. For 485138/485138 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 46023 event pairs, 1241 based on Foata normal form. 2/6224 useless extension candidates. Maximal degree in co-relation 47853. Up to 5765 conditions per place. [2024-06-28 01:52:17,831 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 510 selfloop transitions, 129 changer transitions 0/646 dead transitions. [2024-06-28 01:52:17,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 646 transitions, 11988 flow [2024-06-28 01:52:17,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:52:17,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:52:17,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-28 01:52:17,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 01:52:17,833 INFO L175 Difference]: Start difference. First operand has 527 places, 614 transitions, 10384 flow. Second operand 12 states and 186 transitions. [2024-06-28 01:52:17,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 646 transitions, 11988 flow [2024-06-28 01:52:23,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 646 transitions, 11638 flow, removed 65 selfloop flow, removed 8 redundant places. [2024-06-28 01:52:23,523 INFO L231 Difference]: Finished difference. Result has 531 places, 616 transitions, 10466 flow [2024-06-28 01:52:23,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10050, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10466, PETRI_PLACES=531, PETRI_TRANSITIONS=616} [2024-06-28 01:52:23,524 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 490 predicate places. [2024-06-28 01:52:23,524 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 616 transitions, 10466 flow [2024-06-28 01:52:23,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:23,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:23,524 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 01:52:23,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 01:52:23,525 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:23,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:23,525 INFO L85 PathProgramCache]: Analyzing trace with hash -912903895, now seen corresponding path program 15 times [2024-06-28 01:52:23,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:23,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786370128] [2024-06-28 01:52:23,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:23,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:24,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:24,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786370128] [2024-06-28 01:52:24,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786370128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:24,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:24,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:52:24,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429544604] [2024-06-28 01:52:24,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:24,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:52:24,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:24,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:52:24,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:52:24,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:52:24,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 616 transitions, 10466 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:24,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:24,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:52:24,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:26,738 INFO L124 PetriNetUnfolderBase]: 3669/6461 cut-off events. [2024-06-28 01:52:26,738 INFO L125 PetriNetUnfolderBase]: For 452566/452566 co-relation queries the response was YES. [2024-06-28 01:52:26,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47580 conditions, 6461 events. 3669/6461 cut-off events. For 452566/452566 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 46056 event pairs, 1219 based on Foata normal form. 2/6219 useless extension candidates. Maximal degree in co-relation 47321. Up to 5845 conditions per place. [2024-06-28 01:52:26,872 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 507 selfloop transitions, 134 changer transitions 0/648 dead transitions. [2024-06-28 01:52:26,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 648 transitions, 12062 flow [2024-06-28 01:52:26,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:52:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:52:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 183 transitions. [2024-06-28 01:52:26,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41216216216216217 [2024-06-28 01:52:26,873 INFO L175 Difference]: Start difference. First operand has 531 places, 616 transitions, 10466 flow. Second operand 12 states and 183 transitions. [2024-06-28 01:52:26,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 648 transitions, 12062 flow [2024-06-28 01:52:32,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 648 transitions, 11666 flow, removed 71 selfloop flow, removed 10 redundant places. [2024-06-28 01:52:32,444 INFO L231 Difference]: Finished difference. Result has 533 places, 618 transitions, 10500 flow [2024-06-28 01:52:32,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10070, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10500, PETRI_PLACES=533, PETRI_TRANSITIONS=618} [2024-06-28 01:52:32,445 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 492 predicate places. [2024-06-28 01:52:32,445 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 618 transitions, 10500 flow [2024-06-28 01:52:32,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:32,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:32,445 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 01:52:32,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 01:52:32,445 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:32,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:32,445 INFO L85 PathProgramCache]: Analyzing trace with hash -910284629, now seen corresponding path program 16 times [2024-06-28 01:52:32,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:32,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120951174] [2024-06-28 01:52:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:32,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:33,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:33,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:33,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120951174] [2024-06-28 01:52:33,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120951174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:33,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:33,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:52:33,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199408190] [2024-06-28 01:52:33,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:33,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:52:33,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:33,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:52:33,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:52:33,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:52:33,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 618 transitions, 10500 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:33,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:33,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:52:33,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:35,981 INFO L124 PetriNetUnfolderBase]: 3685/6488 cut-off events. [2024-06-28 01:52:35,982 INFO L125 PetriNetUnfolderBase]: For 459160/459160 co-relation queries the response was YES. [2024-06-28 01:52:36,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47783 conditions, 6488 events. 3685/6488 cut-off events. For 459160/459160 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 46227 event pairs, 1215 based on Foata normal form. 2/6246 useless extension candidates. Maximal degree in co-relation 47523. Up to 5742 conditions per place. [2024-06-28 01:52:36,092 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 506 selfloop transitions, 139 changer transitions 0/652 dead transitions. [2024-06-28 01:52:36,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 652 transitions, 12132 flow [2024-06-28 01:52:36,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:52:36,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:52:36,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-28 01:52:36,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42567567567567566 [2024-06-28 01:52:36,093 INFO L175 Difference]: Start difference. First operand has 533 places, 618 transitions, 10500 flow. Second operand 12 states and 189 transitions. [2024-06-28 01:52:36,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 652 transitions, 12132 flow [2024-06-28 01:52:41,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 652 transitions, 11742 flow, removed 73 selfloop flow, removed 9 redundant places. [2024-06-28 01:52:41,447 INFO L231 Difference]: Finished difference. Result has 536 places, 620 transitions, 10565 flow [2024-06-28 01:52:41,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10110, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10565, PETRI_PLACES=536, PETRI_TRANSITIONS=620} [2024-06-28 01:52:41,447 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 495 predicate places. [2024-06-28 01:52:41,447 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 620 transitions, 10565 flow [2024-06-28 01:52:41,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:41,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:41,448 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 01:52:41,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 01:52:41,448 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:41,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:41,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1498668697, now seen corresponding path program 17 times [2024-06-28 01:52:41,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:41,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057256629] [2024-06-28 01:52:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:41,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:42,599 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 01:52:42,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:42,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057256629] [2024-06-28 01:52:42,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057256629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:42,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:42,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:52:42,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477542962] [2024-06-28 01:52:42,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:42,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:52:42,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:42,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:52:42,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:52:42,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:52:42,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 620 transitions, 10565 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:42,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:42,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:52:42,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:45,173 INFO L124 PetriNetUnfolderBase]: 3701/6517 cut-off events. [2024-06-28 01:52:45,173 INFO L125 PetriNetUnfolderBase]: For 467333/467333 co-relation queries the response was YES. [2024-06-28 01:52:45,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48029 conditions, 6517 events. 3701/6517 cut-off events. For 467333/467333 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 46508 event pairs, 1250 based on Foata normal form. 2/6276 useless extension candidates. Maximal degree in co-relation 47768. Up to 5770 conditions per place. [2024-06-28 01:52:45,301 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 516 selfloop transitions, 131 changer transitions 0/654 dead transitions. [2024-06-28 01:52:45,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 654 transitions, 12205 flow [2024-06-28 01:52:45,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:52:45,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:52:45,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-28 01:52:45,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42792792792792794 [2024-06-28 01:52:45,303 INFO L175 Difference]: Start difference. First operand has 536 places, 620 transitions, 10565 flow. Second operand 12 states and 190 transitions. [2024-06-28 01:52:45,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 654 transitions, 12205 flow [2024-06-28 01:52:50,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 654 transitions, 11766 flow, removed 82 selfloop flow, removed 10 redundant places. [2024-06-28 01:52:50,522 INFO L231 Difference]: Finished difference. Result has 538 places, 622 transitions, 10569 flow [2024-06-28 01:52:50,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10126, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10569, PETRI_PLACES=538, PETRI_TRANSITIONS=622} [2024-06-28 01:52:50,523 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 497 predicate places. [2024-06-28 01:52:50,523 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 622 transitions, 10569 flow [2024-06-28 01:52:50,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:50,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:50,523 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 01:52:50,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 01:52:50,523 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:50,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:50,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1498495717, now seen corresponding path program 18 times [2024-06-28 01:52:50,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:50,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344537104] [2024-06-28 01:52:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:50,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:51,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:51,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:51,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344537104] [2024-06-28 01:52:51,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344537104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:51,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:51,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:52:51,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087995463] [2024-06-28 01:52:51,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:51,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:52:51,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:51,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:52:51,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:52:51,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:52:51,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 622 transitions, 10569 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:51,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:51,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:52:51,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:53,894 INFO L124 PetriNetUnfolderBase]: 3717/6545 cut-off events. [2024-06-28 01:52:53,894 INFO L125 PetriNetUnfolderBase]: For 474054/474054 co-relation queries the response was YES. [2024-06-28 01:52:54,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48207 conditions, 6545 events. 3717/6545 cut-off events. For 474054/474054 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 46720 event pairs, 1250 based on Foata normal form. 2/6305 useless extension candidates. Maximal degree in co-relation 47945. Up to 5726 conditions per place. [2024-06-28 01:52:54,023 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 517 selfloop transitions, 134 changer transitions 0/658 dead transitions. [2024-06-28 01:52:54,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 658 transitions, 12233 flow [2024-06-28 01:52:54,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:52:54,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:52:54,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 194 transitions. [2024-06-28 01:52:54,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369369369369369 [2024-06-28 01:52:54,024 INFO L175 Difference]: Start difference. First operand has 538 places, 622 transitions, 10569 flow. Second operand 12 states and 194 transitions. [2024-06-28 01:52:54,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 658 transitions, 12233 flow [2024-06-28 01:53:00,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 658 transitions, 11806 flow, removed 84 selfloop flow, removed 10 redundant places. [2024-06-28 01:53:00,119 INFO L231 Difference]: Finished difference. Result has 540 places, 624 transitions, 10595 flow [2024-06-28 01:53:00,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10142, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10595, PETRI_PLACES=540, PETRI_TRANSITIONS=624} [2024-06-28 01:53:00,135 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 499 predicate places. [2024-06-28 01:53:00,135 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 624 transitions, 10595 flow [2024-06-28 01:53:00,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:00,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:00,136 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 01:53:00,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 01:53:00,136 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:00,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:00,136 INFO L85 PathProgramCache]: Analyzing trace with hash -676728535, now seen corresponding path program 19 times [2024-06-28 01:53:00,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:00,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154065345] [2024-06-28 01:53:00,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:00,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:01,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:01,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:01,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154065345] [2024-06-28 01:53:01,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154065345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:01,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:01,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:53:01,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280228275] [2024-06-28 01:53:01,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:01,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:53:01,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:01,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:53:01,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:53:01,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:53:01,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 624 transitions, 10595 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:01,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:01,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:53:01,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:03,257 INFO L124 PetriNetUnfolderBase]: 3701/6517 cut-off events. [2024-06-28 01:53:03,258 INFO L125 PetriNetUnfolderBase]: For 452518/452518 co-relation queries the response was YES. [2024-06-28 01:53:03,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46022 conditions, 6517 events. 3701/6517 cut-off events. For 452518/452518 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 46499 event pairs, 1221 based on Foata normal form. 12/6286 useless extension candidates. Maximal degree in co-relation 45759. Up to 5680 conditions per place. [2024-06-28 01:53:03,385 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 492 selfloop transitions, 159 changer transitions 0/658 dead transitions. [2024-06-28 01:53:03,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 658 transitions, 12105 flow [2024-06-28 01:53:03,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:53:03,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:53:03,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 187 transitions. [2024-06-28 01:53:03,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42117117117117114 [2024-06-28 01:53:03,387 INFO L175 Difference]: Start difference. First operand has 540 places, 624 transitions, 10595 flow. Second operand 12 states and 187 transitions. [2024-06-28 01:53:03,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 658 transitions, 12105 flow [2024-06-28 01:53:07,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 658 transitions, 11572 flow, removed 134 selfloop flow, removed 10 redundant places. [2024-06-28 01:53:07,929 INFO L231 Difference]: Finished difference. Result has 542 places, 624 transitions, 10390 flow [2024-06-28 01:53:07,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10062, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10390, PETRI_PLACES=542, PETRI_TRANSITIONS=624} [2024-06-28 01:53:07,930 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 501 predicate places. [2024-06-28 01:53:07,930 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 624 transitions, 10390 flow [2024-06-28 01:53:07,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:07,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:07,930 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 01:53:07,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 01:53:07,930 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:07,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:07,931 INFO L85 PathProgramCache]: Analyzing trace with hash -913083385, now seen corresponding path program 20 times [2024-06-28 01:53:07,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:07,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128079594] [2024-06-28 01:53:07,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:07,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:08,970 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 01:53:08,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:08,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128079594] [2024-06-28 01:53:08,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128079594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:08,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:08,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:53:08,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727439394] [2024-06-28 01:53:08,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:08,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:53:08,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:08,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:53:08,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:53:09,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:53:09,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 624 transitions, 10390 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:09,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:09,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:53:09,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:11,187 INFO L124 PetriNetUnfolderBase]: 3717/6545 cut-off events. [2024-06-28 01:53:11,188 INFO L125 PetriNetUnfolderBase]: For 331319/331319 co-relation queries the response was YES. [2024-06-28 01:53:11,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45640 conditions, 6545 events. 3717/6545 cut-off events. For 331319/331319 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 46720 event pairs, 1235 based on Foata normal form. 2/6308 useless extension candidates. Maximal degree in co-relation 45376. Up to 5725 conditions per place. [2024-06-28 01:53:11,320 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 508 selfloop transitions, 146 changer transitions 0/661 dead transitions. [2024-06-28 01:53:11,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 661 transitions, 12101 flow [2024-06-28 01:53:11,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:53:11,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:53:11,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-28 01:53:11,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42567567567567566 [2024-06-28 01:53:11,322 INFO L175 Difference]: Start difference. First operand has 542 places, 624 transitions, 10390 flow. Second operand 12 states and 189 transitions. [2024-06-28 01:53:11,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 661 transitions, 12101 flow [2024-06-28 01:53:15,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 661 transitions, 11763 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 01:53:15,504 INFO L231 Difference]: Finished difference. Result has 544 places, 627 transitions, 10598 flow [2024-06-28 01:53:15,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10058, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10598, PETRI_PLACES=544, PETRI_TRANSITIONS=627} [2024-06-28 01:53:15,505 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 503 predicate places. [2024-06-28 01:53:15,505 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 627 transitions, 10598 flow [2024-06-28 01:53:15,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:15,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:15,505 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 01:53:15,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 01:53:15,506 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:15,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:15,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1494027067, now seen corresponding path program 21 times [2024-06-28 01:53:15,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:15,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304792317] [2024-06-28 01:53:15,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:15,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:16,418 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 01:53:16,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:16,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304792317] [2024-06-28 01:53:16,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304792317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:16,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:16,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:53:16,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321278015] [2024-06-28 01:53:16,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:16,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:53:16,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:16,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:53:16,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:53:16,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:53:16,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 627 transitions, 10598 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:16,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:16,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:53:16,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:18,710 INFO L124 PetriNetUnfolderBase]: 3733/6573 cut-off events. [2024-06-28 01:53:18,710 INFO L125 PetriNetUnfolderBase]: For 344405/344405 co-relation queries the response was YES. [2024-06-28 01:53:18,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46273 conditions, 6573 events. 3733/6573 cut-off events. For 344405/344405 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 46988 event pairs, 1262 based on Foata normal form. 2/6342 useless extension candidates. Maximal degree in co-relation 46007. Up to 5280 conditions per place. [2024-06-28 01:53:18,845 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 505 selfloop transitions, 157 changer transitions 0/669 dead transitions. [2024-06-28 01:53:18,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 669 transitions, 12350 flow [2024-06-28 01:53:18,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:53:18,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:53:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-28 01:53:18,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44819819819819817 [2024-06-28 01:53:18,846 INFO L175 Difference]: Start difference. First operand has 544 places, 627 transitions, 10598 flow. Second operand 12 states and 199 transitions. [2024-06-28 01:53:18,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 669 transitions, 12350 flow [2024-06-28 01:53:23,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 669 transitions, 11887 flow, removed 100 selfloop flow, removed 9 redundant places. [2024-06-28 01:53:23,768 INFO L231 Difference]: Finished difference. Result has 547 places, 629 transitions, 10642 flow [2024-06-28 01:53:23,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10135, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10642, PETRI_PLACES=547, PETRI_TRANSITIONS=629} [2024-06-28 01:53:23,769 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 506 predicate places. [2024-06-28 01:53:23,769 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 629 transitions, 10642 flow [2024-06-28 01:53:23,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:23,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:23,769 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 01:53:23,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 01:53:23,770 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:23,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:23,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1945217157, now seen corresponding path program 22 times [2024-06-28 01:53:23,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:23,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332446987] [2024-06-28 01:53:23,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:23,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:24,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:24,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:24,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332446987] [2024-06-28 01:53:24,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332446987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:24,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:24,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:53:24,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113375296] [2024-06-28 01:53:24,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:24,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:53:24,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:24,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:53:24,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:53:24,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:53:24,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 629 transitions, 10642 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:24,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:24,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:53:24,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:27,108 INFO L124 PetriNetUnfolderBase]: 3749/6603 cut-off events. [2024-06-28 01:53:27,108 INFO L125 PetriNetUnfolderBase]: For 349956/349956 co-relation queries the response was YES. [2024-06-28 01:53:27,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46555 conditions, 6603 events. 3749/6603 cut-off events. For 349956/349956 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 47268 event pairs, 1116 based on Foata normal form. 2/6362 useless extension candidates. Maximal degree in co-relation 46288. Up to 5701 conditions per place. [2024-06-28 01:53:27,247 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 559 selfloop transitions, 101 changer transitions 0/667 dead transitions. [2024-06-28 01:53:27,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 667 transitions, 12344 flow [2024-06-28 01:53:27,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:53:27,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:53:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 01:53:27,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-28 01:53:27,249 INFO L175 Difference]: Start difference. First operand has 547 places, 629 transitions, 10642 flow. Second operand 11 states and 170 transitions. [2024-06-28 01:53:27,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 667 transitions, 12344 flow [2024-06-28 01:53:31,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 667 transitions, 11853 flow, removed 90 selfloop flow, removed 10 redundant places. [2024-06-28 01:53:31,794 INFO L231 Difference]: Finished difference. Result has 548 places, 631 transitions, 10568 flow [2024-06-28 01:53:31,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10151, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10568, PETRI_PLACES=548, PETRI_TRANSITIONS=631} [2024-06-28 01:53:31,795 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 507 predicate places. [2024-06-28 01:53:31,795 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 631 transitions, 10568 flow [2024-06-28 01:53:31,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:31,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:31,795 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 01:53:31,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 01:53:31,796 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:31,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:31,797 INFO L85 PathProgramCache]: Analyzing trace with hash -111997437, now seen corresponding path program 23 times [2024-06-28 01:53:31,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:31,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506347469] [2024-06-28 01:53:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:31,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:32,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:32,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506347469] [2024-06-28 01:53:32,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506347469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:32,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:32,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:53:32,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651925639] [2024-06-28 01:53:32,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:32,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:53:32,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:32,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:53:32,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:53:32,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:53:32,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 631 transitions, 10568 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:32,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:32,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:53:32,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:35,221 INFO L124 PetriNetUnfolderBase]: 3765/6638 cut-off events. [2024-06-28 01:53:35,221 INFO L125 PetriNetUnfolderBase]: For 354650/354650 co-relation queries the response was YES. [2024-06-28 01:53:35,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46729 conditions, 6638 events. 3765/6638 cut-off events. For 354650/354650 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 47628 event pairs, 1353 based on Foata normal form. 2/6401 useless extension candidates. Maximal degree in co-relation 46461. Up to 6046 conditions per place. [2024-06-28 01:53:35,345 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 524 selfloop transitions, 131 changer transitions 0/662 dead transitions. [2024-06-28 01:53:35,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 662 transitions, 12226 flow [2024-06-28 01:53:35,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:53:35,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:53:35,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-28 01:53:35,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004914004914005 [2024-06-28 01:53:35,346 INFO L175 Difference]: Start difference. First operand has 548 places, 631 transitions, 10568 flow. Second operand 11 states and 163 transitions. [2024-06-28 01:53:35,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 662 transitions, 12226 flow [2024-06-28 01:53:39,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 662 transitions, 11873 flow, removed 86 selfloop flow, removed 9 redundant places. [2024-06-28 01:53:39,545 INFO L231 Difference]: Finished difference. Result has 550 places, 633 transitions, 10695 flow [2024-06-28 01:53:39,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10215, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10695, PETRI_PLACES=550, PETRI_TRANSITIONS=633} [2024-06-28 01:53:39,546 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 509 predicate places. [2024-06-28 01:53:39,546 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 633 transitions, 10695 flow [2024-06-28 01:53:39,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:39,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:39,546 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 01:53:39,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 01:53:39,547 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:39,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:39,547 INFO L85 PathProgramCache]: Analyzing trace with hash -112003947, now seen corresponding path program 24 times [2024-06-28 01:53:39,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:39,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568721708] [2024-06-28 01:53:39,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:39,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:40,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:40,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568721708] [2024-06-28 01:53:40,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568721708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:40,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:40,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:53:40,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352864179] [2024-06-28 01:53:40,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:40,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:53:40,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:40,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:53:40,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:53:40,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:53:40,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 633 transitions, 10695 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:40,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:40,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:53:40,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:42,847 INFO L124 PetriNetUnfolderBase]: 3781/6665 cut-off events. [2024-06-28 01:53:42,847 INFO L125 PetriNetUnfolderBase]: For 360354/360354 co-relation queries the response was YES. [2024-06-28 01:53:42,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47000 conditions, 6665 events. 3781/6665 cut-off events. For 360354/360354 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 47918 event pairs, 1319 based on Foata normal form. 2/6431 useless extension candidates. Maximal degree in co-relation 46731. Up to 5894 conditions per place. [2024-06-28 01:53:43,002 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 524 selfloop transitions, 135 changer transitions 0/666 dead transitions. [2024-06-28 01:53:43,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 666 transitions, 12377 flow [2024-06-28 01:53:43,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:53:43,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:53:43,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-28 01:53:43,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103194103194103 [2024-06-28 01:53:43,003 INFO L175 Difference]: Start difference. First operand has 550 places, 633 transitions, 10695 flow. Second operand 11 states and 167 transitions. [2024-06-28 01:53:43,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 666 transitions, 12377 flow [2024-06-28 01:53:47,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 666 transitions, 11933 flow, removed 91 selfloop flow, removed 11 redundant places. [2024-06-28 01:53:47,878 INFO L231 Difference]: Finished difference. Result has 550 places, 635 transitions, 10735 flow [2024-06-28 01:53:47,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10251, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10735, PETRI_PLACES=550, PETRI_TRANSITIONS=635} [2024-06-28 01:53:47,879 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 509 predicate places. [2024-06-28 01:53:47,879 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 635 transitions, 10735 flow [2024-06-28 01:53:47,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:47,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:47,879 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 01:53:47,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 01:53:47,879 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:47,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:47,880 INFO L85 PathProgramCache]: Analyzing trace with hash 340249089, now seen corresponding path program 25 times [2024-06-28 01:53:47,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:47,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137258805] [2024-06-28 01:53:47,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:47,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:48,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:48,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:48,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137258805] [2024-06-28 01:53:48,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137258805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:48,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:48,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:53:48,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314807460] [2024-06-28 01:53:48,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:48,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:53:48,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:48,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:53:48,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:53:48,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:53:48,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 635 transitions, 10735 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:48,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:48,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:53:48,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:51,157 INFO L124 PetriNetUnfolderBase]: 3797/6692 cut-off events. [2024-06-28 01:53:51,157 INFO L125 PetriNetUnfolderBase]: For 360388/360388 co-relation queries the response was YES. [2024-06-28 01:53:51,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47257 conditions, 6692 events. 3797/6692 cut-off events. For 360388/360388 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 48134 event pairs, 1281 based on Foata normal form. 2/6461 useless extension candidates. Maximal degree in co-relation 46989. Up to 5648 conditions per place. [2024-06-28 01:53:51,308 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 520 selfloop transitions, 143 changer transitions 0/670 dead transitions. [2024-06-28 01:53:51,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 670 transitions, 12441 flow [2024-06-28 01:53:51,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:53:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:53:51,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 01:53:51,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-28 01:53:51,310 INFO L175 Difference]: Start difference. First operand has 550 places, 635 transitions, 10735 flow. Second operand 11 states and 171 transitions. [2024-06-28 01:53:51,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 670 transitions, 12441 flow [2024-06-28 01:53:55,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 670 transitions, 11983 flow, removed 94 selfloop flow, removed 11 redundant places. [2024-06-28 01:53:55,947 INFO L231 Difference]: Finished difference. Result has 550 places, 637 transitions, 10781 flow [2024-06-28 01:53:55,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10277, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10781, PETRI_PLACES=550, PETRI_TRANSITIONS=637} [2024-06-28 01:53:55,948 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 509 predicate places. [2024-06-28 01:53:55,948 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 637 transitions, 10781 flow [2024-06-28 01:53:55,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:55,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:55,948 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 01:53:55,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 01:53:55,948 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:55,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:55,949 INFO L85 PathProgramCache]: Analyzing trace with hash -116645577, now seen corresponding path program 26 times [2024-06-28 01:53:55,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:55,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57244405] [2024-06-28 01:53:55,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:55,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:56,972 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 01:53:56,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:56,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57244405] [2024-06-28 01:53:56,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57244405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:56,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:56,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:53:56,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146526100] [2024-06-28 01:53:56,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:56,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:53:56,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:56,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:53:56,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:53:57,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:53:57,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 637 transitions, 10781 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:57,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:57,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:53:57,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:59,426 INFO L124 PetriNetUnfolderBase]: 3813/6720 cut-off events. [2024-06-28 01:53:59,427 INFO L125 PetriNetUnfolderBase]: For 360460/360460 co-relation queries the response was YES. [2024-06-28 01:53:59,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47530 conditions, 6720 events. 3813/6720 cut-off events. For 360460/360460 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 48405 event pairs, 1269 based on Foata normal form. 2/6477 useless extension candidates. Maximal degree in co-relation 47263. Up to 5308 conditions per place. [2024-06-28 01:53:59,569 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 512 selfloop transitions, 155 changer transitions 0/674 dead transitions. [2024-06-28 01:53:59,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 674 transitions, 12511 flow [2024-06-28 01:53:59,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:53:59,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:53:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-28 01:53:59,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42997542997543 [2024-06-28 01:53:59,570 INFO L175 Difference]: Start difference. First operand has 550 places, 637 transitions, 10781 flow. Second operand 11 states and 175 transitions. [2024-06-28 01:53:59,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 674 transitions, 12511 flow [2024-06-28 01:54:04,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 674 transitions, 12033 flow, removed 96 selfloop flow, removed 11 redundant places. [2024-06-28 01:54:04,265 INFO L231 Difference]: Finished difference. Result has 550 places, 639 transitions, 10835 flow [2024-06-28 01:54:04,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10303, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10835, PETRI_PLACES=550, PETRI_TRANSITIONS=639} [2024-06-28 01:54:04,266 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 509 predicate places. [2024-06-28 01:54:04,266 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 639 transitions, 10835 flow [2024-06-28 01:54:04,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:04,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:04,266 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 01:54:04,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-28 01:54:04,267 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:04,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:04,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1974043203, now seen corresponding path program 27 times [2024-06-28 01:54:04,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:04,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102689078] [2024-06-28 01:54:04,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:04,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:05,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:05,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102689078] [2024-06-28 01:54:05,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102689078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:05,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:05,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:54:05,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781043461] [2024-06-28 01:54:05,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:05,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:54:05,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:05,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:54:05,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:54:05,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:54:05,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 639 transitions, 10835 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:05,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:05,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:54:05,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:07,680 INFO L124 PetriNetUnfolderBase]: 3829/6742 cut-off events. [2024-06-28 01:54:07,681 INFO L125 PetriNetUnfolderBase]: For 361169/361169 co-relation queries the response was YES. [2024-06-28 01:54:07,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47799 conditions, 6742 events. 3829/6742 cut-off events. For 361169/361169 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 48476 event pairs, 1301 based on Foata normal form. 2/6499 useless extension candidates. Maximal degree in co-relation 47533. Up to 5760 conditions per place. [2024-06-28 01:54:07,821 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 503 selfloop transitions, 159 changer transitions 0/669 dead transitions. [2024-06-28 01:54:07,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 669 transitions, 12523 flow [2024-06-28 01:54:07,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:54:07,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:54:07,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 01:54:07,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-28 01:54:07,822 INFO L175 Difference]: Start difference. First operand has 550 places, 639 transitions, 10835 flow. Second operand 11 states and 171 transitions. [2024-06-28 01:54:07,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 669 transitions, 12523 flow [2024-06-28 01:54:12,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 669 transitions, 12031 flow, removed 97 selfloop flow, removed 9 redundant places. [2024-06-28 01:54:12,168 INFO L231 Difference]: Finished difference. Result has 552 places, 641 transitions, 10882 flow [2024-06-28 01:54:12,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10343, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10882, PETRI_PLACES=552, PETRI_TRANSITIONS=641} [2024-06-28 01:54:12,168 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 511 predicate places. [2024-06-28 01:54:12,169 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 641 transitions, 10882 flow [2024-06-28 01:54:12,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:12,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:12,169 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 01:54:12,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-28 01:54:12,169 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:12,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:12,169 INFO L85 PathProgramCache]: Analyzing trace with hash -892839939, now seen corresponding path program 28 times [2024-06-28 01:54:12,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:12,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169803128] [2024-06-28 01:54:12,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:12,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:13,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:13,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169803128] [2024-06-28 01:54:13,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169803128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:13,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:13,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:54:13,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125761382] [2024-06-28 01:54:13,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:13,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:54:13,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:13,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:54:13,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:54:13,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:54:13,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 641 transitions, 10882 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:13,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:13,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:54:13,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:15,672 INFO L124 PetriNetUnfolderBase]: 3845/6769 cut-off events. [2024-06-28 01:54:15,673 INFO L125 PetriNetUnfolderBase]: For 364129/364129 co-relation queries the response was YES. [2024-06-28 01:54:15,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47933 conditions, 6769 events. 3845/6769 cut-off events. For 364129/364129 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 48722 event pairs, 1321 based on Foata normal form. 2/6528 useless extension candidates. Maximal degree in co-relation 47666. Up to 5838 conditions per place. [2024-06-28 01:54:15,815 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 509 selfloop transitions, 157 changer transitions 0/673 dead transitions. [2024-06-28 01:54:15,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 673 transitions, 12594 flow [2024-06-28 01:54:15,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:54:15,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:54:15,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 01:54:15,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-06-28 01:54:15,816 INFO L175 Difference]: Start difference. First operand has 552 places, 641 transitions, 10882 flow. Second operand 11 states and 173 transitions. [2024-06-28 01:54:15,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 673 transitions, 12594 flow [2024-06-28 01:54:20,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 673 transitions, 12083 flow, removed 100 selfloop flow, removed 9 redundant places. [2024-06-28 01:54:20,831 INFO L231 Difference]: Finished difference. Result has 554 places, 643 transitions, 10909 flow [2024-06-28 01:54:20,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10371, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10909, PETRI_PLACES=554, PETRI_TRANSITIONS=643} [2024-06-28 01:54:20,835 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 513 predicate places. [2024-06-28 01:54:20,836 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 643 transitions, 10909 flow [2024-06-28 01:54:20,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:20,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:20,836 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 01:54:20,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-28 01:54:20,836 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:20,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:20,837 INFO L85 PathProgramCache]: Analyzing trace with hash -893012919, now seen corresponding path program 29 times [2024-06-28 01:54:20,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:20,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128824460] [2024-06-28 01:54:20,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:20,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:21,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:21,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128824460] [2024-06-28 01:54:21,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128824460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:21,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:21,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:54:21,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259970334] [2024-06-28 01:54:21,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:21,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:54:21,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:21,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:54:21,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:54:21,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:54:21,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 643 transitions, 10909 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:21,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:21,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:54:21,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:24,338 INFO L124 PetriNetUnfolderBase]: 3861/6799 cut-off events. [2024-06-28 01:54:24,338 INFO L125 PetriNetUnfolderBase]: For 369624/369624 co-relation queries the response was YES. [2024-06-28 01:54:24,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48156 conditions, 6799 events. 3861/6799 cut-off events. For 369624/369624 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 49006 event pairs, 1281 based on Foata normal form. 2/6560 useless extension candidates. Maximal degree in co-relation 47888. Up to 5584 conditions per place. [2024-06-28 01:54:24,482 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 499 selfloop transitions, 171 changer transitions 0/677 dead transitions. [2024-06-28 01:54:24,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 677 transitions, 12645 flow [2024-06-28 01:54:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:54:24,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:54:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 01:54:24,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-28 01:54:24,483 INFO L175 Difference]: Start difference. First operand has 554 places, 643 transitions, 10909 flow. Second operand 11 states and 179 transitions. [2024-06-28 01:54:24,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 677 transitions, 12645 flow [2024-06-28 01:54:29,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 677 transitions, 12168 flow, removed 107 selfloop flow, removed 8 redundant places. [2024-06-28 01:54:29,471 INFO L231 Difference]: Finished difference. Result has 557 places, 645 transitions, 11002 flow [2024-06-28 01:54:29,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10436, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11002, PETRI_PLACES=557, PETRI_TRANSITIONS=645} [2024-06-28 01:54:29,471 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 516 predicate places. [2024-06-28 01:54:29,471 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 645 transitions, 11002 flow [2024-06-28 01:54:29,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:29,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:29,471 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 01:54:29,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-28 01:54:29,472 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:29,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:29,472 INFO L85 PathProgramCache]: Analyzing trace with hash -897481569, now seen corresponding path program 30 times [2024-06-28 01:54:29,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:29,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351257189] [2024-06-28 01:54:29,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:29,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:30,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:30,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351257189] [2024-06-28 01:54:30,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351257189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:30,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:30,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:54:30,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446104793] [2024-06-28 01:54:30,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:30,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:54:30,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:30,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:54:30,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:54:30,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:54:30,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 645 transitions, 11002 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:30,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:30,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:54:30,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:33,021 INFO L124 PetriNetUnfolderBase]: 3977/7014 cut-off events. [2024-06-28 01:54:33,022 INFO L125 PetriNetUnfolderBase]: For 545265/545265 co-relation queries the response was YES. [2024-06-28 01:54:33,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52329 conditions, 7014 events. 3977/7014 cut-off events. For 545265/545265 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 50898 event pairs, 1342 based on Foata normal form. 2/6787 useless extension candidates. Maximal degree in co-relation 52060. Up to 4928 conditions per place. [2024-06-28 01:54:33,161 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 476 selfloop transitions, 205 changer transitions 0/688 dead transitions. [2024-06-28 01:54:33,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 688 transitions, 13340 flow [2024-06-28 01:54:33,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:54:33,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:54:33,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 01:54:33,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:54:33,162 INFO L175 Difference]: Start difference. First operand has 557 places, 645 transitions, 11002 flow. Second operand 11 states and 185 transitions. [2024-06-28 01:54:33,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 688 transitions, 13340 flow [2024-06-28 01:54:39,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 688 transitions, 12784 flow, removed 110 selfloop flow, removed 9 redundant places. [2024-06-28 01:54:39,833 INFO L231 Difference]: Finished difference. Result has 559 places, 649 transitions, 11302 flow [2024-06-28 01:54:39,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10456, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11302, PETRI_PLACES=559, PETRI_TRANSITIONS=649} [2024-06-28 01:54:39,833 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 518 predicate places. [2024-06-28 01:54:39,834 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 649 transitions, 11302 flow [2024-06-28 01:54:39,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:39,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:39,834 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 01:54:39,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-28 01:54:39,834 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:39,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:39,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1226730125, now seen corresponding path program 31 times [2024-06-28 01:54:39,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:39,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302113034] [2024-06-28 01:54:39,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:39,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:40,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:40,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302113034] [2024-06-28 01:54:40,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302113034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:40,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:40,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:54:40,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278729812] [2024-06-28 01:54:40,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:40,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:54:40,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:40,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:54:40,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:54:40,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:54:40,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 649 transitions, 11302 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:40,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:40,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:54:40,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:43,173 INFO L124 PetriNetUnfolderBase]: 3980/7020 cut-off events. [2024-06-28 01:54:43,174 INFO L125 PetriNetUnfolderBase]: For 547719/547719 co-relation queries the response was YES. [2024-06-28 01:54:43,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51040 conditions, 7020 events. 3980/7020 cut-off events. For 547719/547719 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 51024 event pairs, 1317 based on Foata normal form. 12/6785 useless extension candidates. Maximal degree in co-relation 50770. Up to 5767 conditions per place. [2024-06-28 01:54:43,320 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 480 selfloop transitions, 196 changer transitions 0/683 dead transitions. [2024-06-28 01:54:43,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 683 transitions, 13072 flow [2024-06-28 01:54:43,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:54:43,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:54:43,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 01:54:43,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-28 01:54:43,322 INFO L175 Difference]: Start difference. First operand has 559 places, 649 transitions, 11302 flow. Second operand 11 states and 172 transitions. [2024-06-28 01:54:43,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 683 transitions, 13072 flow [2024-06-28 01:54:48,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 683 transitions, 12616 flow, removed 126 selfloop flow, removed 7 redundant places. [2024-06-28 01:54:48,831 INFO L231 Difference]: Finished difference. Result has 563 places, 651 transitions, 11474 flow [2024-06-28 01:54:48,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10870, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11474, PETRI_PLACES=563, PETRI_TRANSITIONS=651} [2024-06-28 01:54:48,832 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 522 predicate places. [2024-06-28 01:54:48,832 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 651 transitions, 11474 flow [2024-06-28 01:54:48,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:48,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:48,832 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 01:54:48,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-28 01:54:48,832 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:48,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:48,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1227037583, now seen corresponding path program 2 times [2024-06-28 01:54:48,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:48,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062825235] [2024-06-28 01:54:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:48,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:49,834 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 01:54:49,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:49,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062825235] [2024-06-28 01:54:49,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062825235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:49,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:49,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:54:49,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748062064] [2024-06-28 01:54:49,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:49,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:54:49,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:49,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:54:49,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:54:49,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:54:49,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 651 transitions, 11474 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:49,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:49,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:54:49,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:52,419 INFO L124 PetriNetUnfolderBase]: 4094/7238 cut-off events. [2024-06-28 01:54:52,419 INFO L125 PetriNetUnfolderBase]: For 625108/625108 co-relation queries the response was YES. [2024-06-28 01:54:52,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54504 conditions, 7238 events. 4094/7238 cut-off events. For 625108/625108 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 52862 event pairs, 1322 based on Foata normal form. 8/7010 useless extension candidates. Maximal degree in co-relation 54232. Up to 4996 conditions per place. [2024-06-28 01:54:52,577 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 465 selfloop transitions, 224 changer transitions 0/696 dead transitions. [2024-06-28 01:54:52,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 696 transitions, 13924 flow [2024-06-28 01:54:52,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:54:52,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:54:52,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-28 01:54:52,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42792792792792794 [2024-06-28 01:54:52,579 INFO L175 Difference]: Start difference. First operand has 563 places, 651 transitions, 11474 flow. Second operand 12 states and 190 transitions. [2024-06-28 01:54:52,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 696 transitions, 13924 flow [2024-06-28 01:54:59,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 696 transitions, 13379 flow, removed 79 selfloop flow, removed 10 redundant places. [2024-06-28 01:54:59,063 INFO L231 Difference]: Finished difference. Result has 566 places, 654 transitions, 11875 flow [2024-06-28 01:54:59,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10931, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11875, PETRI_PLACES=566, PETRI_TRANSITIONS=654} [2024-06-28 01:54:59,064 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 525 predicate places. [2024-06-28 01:54:59,064 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 654 transitions, 11875 flow [2024-06-28 01:54:59,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:59,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:59,064 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 01:54:59,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-28 01:54:59,064 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:59,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:59,065 INFO L85 PathProgramCache]: Analyzing trace with hash 990554765, now seen corresponding path program 32 times [2024-06-28 01:54:59,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:59,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78146987] [2024-06-28 01:54:59,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:59,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:00,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:00,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:00,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78146987] [2024-06-28 01:55:00,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78146987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:00,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:00,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:55:00,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448360933] [2024-06-28 01:55:00,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:00,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:55:00,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:00,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:55:00,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:55:00,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:55:00,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 654 transitions, 11875 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:00,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:00,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:55:00,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:02,873 INFO L124 PetriNetUnfolderBase]: 4110/7265 cut-off events. [2024-06-28 01:55:02,873 INFO L125 PetriNetUnfolderBase]: For 541838/541838 co-relation queries the response was YES. [2024-06-28 01:55:02,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54446 conditions, 7265 events. 4110/7265 cut-off events. For 541838/541838 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 53268 event pairs, 1430 based on Foata normal form. 2/7015 useless extension candidates. Maximal degree in co-relation 54173. Up to 6279 conditions per place. [2024-06-28 01:55:03,010 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 509 selfloop transitions, 168 changer transitions 0/684 dead transitions. [2024-06-28 01:55:03,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 684 transitions, 13584 flow [2024-06-28 01:55:03,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:55:03,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:55:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 01:55:03,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-28 01:55:03,012 INFO L175 Difference]: Start difference. First operand has 566 places, 654 transitions, 11875 flow. Second operand 11 states and 170 transitions. [2024-06-28 01:55:03,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 684 transitions, 13584 flow [2024-06-28 01:55:08,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 684 transitions, 13089 flow, removed 76 selfloop flow, removed 9 redundant places. [2024-06-28 01:55:08,667 INFO L231 Difference]: Finished difference. Result has 568 places, 656 transitions, 11928 flow [2024-06-28 01:55:08,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11384, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11928, PETRI_PLACES=568, PETRI_TRANSITIONS=656} [2024-06-28 01:55:08,668 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 527 predicate places. [2024-06-28 01:55:08,668 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 656 transitions, 11928 flow [2024-06-28 01:55:08,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:08,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:08,668 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 01:55:08,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-28 01:55:08,668 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:08,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:08,669 INFO L85 PathProgramCache]: Analyzing trace with hash 990548255, now seen corresponding path program 33 times [2024-06-28 01:55:08,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:08,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857975735] [2024-06-28 01:55:08,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:08,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:09,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:09,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:09,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857975735] [2024-06-28 01:55:09,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857975735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:09,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:09,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:55:09,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484586981] [2024-06-28 01:55:09,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:09,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:55:09,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:09,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:55:09,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:55:09,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:55:09,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 656 transitions, 11928 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:09,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:09,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:55:09,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:12,343 INFO L124 PetriNetUnfolderBase]: 4126/7293 cut-off events. [2024-06-28 01:55:12,344 INFO L125 PetriNetUnfolderBase]: For 529697/529697 co-relation queries the response was YES. [2024-06-28 01:55:12,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54667 conditions, 7293 events. 4126/7293 cut-off events. For 529697/529697 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 53553 event pairs, 1420 based on Foata normal form. 2/7045 useless extension candidates. Maximal degree in co-relation 54394. Up to 6217 conditions per place. [2024-06-28 01:55:12,496 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 508 selfloop transitions, 173 changer transitions 0/688 dead transitions. [2024-06-28 01:55:12,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 688 transitions, 13658 flow [2024-06-28 01:55:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:55:12,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:55:12,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 01:55:12,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-28 01:55:12,498 INFO L175 Difference]: Start difference. First operand has 568 places, 656 transitions, 11928 flow. Second operand 11 states and 174 transitions. [2024-06-28 01:55:12,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 688 transitions, 13658 flow [2024-06-28 01:55:19,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 688 transitions, 13149 flow, removed 90 selfloop flow, removed 9 redundant places. [2024-06-28 01:55:19,121 INFO L231 Difference]: Finished difference. Result has 570 places, 658 transitions, 11977 flow [2024-06-28 01:55:19,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11419, PETRI_DIFFERENCE_MINUEND_PLACES=559, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11977, PETRI_PLACES=570, PETRI_TRANSITIONS=658} [2024-06-28 01:55:19,121 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 529 predicate places. [2024-06-28 01:55:19,121 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 658 transitions, 11977 flow [2024-06-28 01:55:19,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:19,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:19,121 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 01:55:19,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-28 01:55:19,122 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:19,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:19,122 INFO L85 PathProgramCache]: Analyzing trace with hash -2101062979, now seen corresponding path program 34 times [2024-06-28 01:55:19,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:19,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457973599] [2024-06-28 01:55:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:19,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:20,211 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 01:55:20,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:20,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457973599] [2024-06-28 01:55:20,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457973599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:20,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:20,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:55:20,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975786159] [2024-06-28 01:55:20,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:20,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:55:20,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:20,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:55:20,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:55:20,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:55:20,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 658 transitions, 11977 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:20,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:20,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:55:20,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:22,718 INFO L124 PetriNetUnfolderBase]: 4123/7288 cut-off events. [2024-06-28 01:55:22,718 INFO L125 PetriNetUnfolderBase]: For 502769/502769 co-relation queries the response was YES. [2024-06-28 01:55:22,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53964 conditions, 7288 events. 4123/7288 cut-off events. For 502769/502769 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 53470 event pairs, 1432 based on Foata normal form. 2/7038 useless extension candidates. Maximal degree in co-relation 53690. Up to 6302 conditions per place. [2024-06-28 01:55:22,866 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 500 selfloop transitions, 180 changer transitions 0/687 dead transitions. [2024-06-28 01:55:22,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 687 transitions, 13559 flow [2024-06-28 01:55:22,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:55:22,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:55:22,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-28 01:55:22,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-28 01:55:22,868 INFO L175 Difference]: Start difference. First operand has 570 places, 658 transitions, 11977 flow. Second operand 11 states and 169 transitions. [2024-06-28 01:55:22,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 687 transitions, 13559 flow [2024-06-28 01:55:29,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 687 transitions, 13031 flow, removed 94 selfloop flow, removed 9 redundant places. [2024-06-28 01:55:29,195 INFO L231 Difference]: Finished difference. Result has 572 places, 659 transitions, 11886 flow [2024-06-28 01:55:29,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11449, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11886, PETRI_PLACES=572, PETRI_TRANSITIONS=659} [2024-06-28 01:55:29,195 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 531 predicate places. [2024-06-28 01:55:29,195 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 659 transitions, 11886 flow [2024-06-28 01:55:29,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:29,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:29,196 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 01:55:29,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-28 01:55:29,196 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:29,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:29,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1091468015, now seen corresponding path program 35 times [2024-06-28 01:55:29,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:29,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227609584] [2024-06-28 01:55:29,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:29,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:30,310 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 01:55:30,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:30,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227609584] [2024-06-28 01:55:30,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227609584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:30,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:30,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:55:30,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364422604] [2024-06-28 01:55:30,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:30,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:55:30,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:30,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:55:30,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:55:30,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:55:30,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 659 transitions, 11886 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:30,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:30,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:55:30,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:33,046 INFO L124 PetriNetUnfolderBase]: 4139/7318 cut-off events. [2024-06-28 01:55:33,046 INFO L125 PetriNetUnfolderBase]: For 507875/507875 co-relation queries the response was YES. [2024-06-28 01:55:33,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54185 conditions, 7318 events. 4139/7318 cut-off events. For 507875/507875 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 53723 event pairs, 1413 based on Foata normal form. 2/7076 useless extension candidates. Maximal degree in co-relation 53910. Up to 5936 conditions per place. [2024-06-28 01:55:33,186 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 498 selfloop transitions, 190 changer transitions 0/695 dead transitions. [2024-06-28 01:55:33,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 695 transitions, 13682 flow [2024-06-28 01:55:33,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:55:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:55:33,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 01:55:33,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 01:55:33,188 INFO L175 Difference]: Start difference. First operand has 572 places, 659 transitions, 11886 flow. Second operand 11 states and 176 transitions. [2024-06-28 01:55:33,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 695 transitions, 13682 flow [2024-06-28 01:55:39,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 695 transitions, 13149 flow, removed 90 selfloop flow, removed 9 redundant places. [2024-06-28 01:55:39,238 INFO L231 Difference]: Finished difference. Result has 574 places, 661 transitions, 11951 flow [2024-06-28 01:55:39,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11353, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11951, PETRI_PLACES=574, PETRI_TRANSITIONS=661} [2024-06-28 01:55:39,238 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 533 predicate places. [2024-06-28 01:55:39,238 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 661 transitions, 11951 flow [2024-06-28 01:55:39,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:39,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:39,239 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 01:55:39,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-28 01:55:39,239 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:39,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:39,239 INFO L85 PathProgramCache]: Analyzing trace with hash 863393885, now seen corresponding path program 36 times [2024-06-28 01:55:39,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:39,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602042374] [2024-06-28 01:55:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:39,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:40,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:40,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602042374] [2024-06-28 01:55:40,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602042374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:40,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:40,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:55:40,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900220557] [2024-06-28 01:55:40,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:40,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:55:40,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:40,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:55:40,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:55:40,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:55:40,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 661 transitions, 11951 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:40,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:40,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:55:40,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:42,743 INFO L124 PetriNetUnfolderBase]: 4136/7313 cut-off events. [2024-06-28 01:55:42,743 INFO L125 PetriNetUnfolderBase]: For 479153/479153 co-relation queries the response was YES. [2024-06-28 01:55:42,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53496 conditions, 7313 events. 4136/7313 cut-off events. For 479153/479153 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 53682 event pairs, 1406 based on Foata normal form. 2/7077 useless extension candidates. Maximal degree in co-relation 53220. Up to 5661 conditions per place. [2024-06-28 01:55:42,896 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 495 selfloop transitions, 195 changer transitions 0/697 dead transitions. [2024-06-28 01:55:42,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 697 transitions, 13557 flow [2024-06-28 01:55:42,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:55:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:55:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:55:42,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-28 01:55:42,898 INFO L175 Difference]: Start difference. First operand has 574 places, 661 transitions, 11951 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:55:42,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 697 transitions, 13557 flow [2024-06-28 01:55:49,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 697 transitions, 12880 flow, removed 150 selfloop flow, removed 10 redundant places. [2024-06-28 01:55:49,214 INFO L231 Difference]: Finished difference. Result has 575 places, 661 transitions, 11672 flow [2024-06-28 01:55:49,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11274, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11672, PETRI_PLACES=575, PETRI_TRANSITIONS=661} [2024-06-28 01:55:49,214 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 534 predicate places. [2024-06-28 01:55:49,215 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 661 transitions, 11672 flow [2024-06-28 01:55:49,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:49,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:49,215 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 01:55:49,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-28 01:55:49,215 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:49,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:49,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1169424719, now seen corresponding path program 37 times [2024-06-28 01:55:49,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:49,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159314489] [2024-06-28 01:55:49,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:49,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:50,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:50,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159314489] [2024-06-28 01:55:50,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159314489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:50,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:50,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:55:50,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728351572] [2024-06-28 01:55:50,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:50,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:55:50,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:50,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:55:50,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:55:50,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:55:50,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 661 transitions, 11672 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:50,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:50,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:55:50,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:53,072 INFO L124 PetriNetUnfolderBase]: 4152/7341 cut-off events. [2024-06-28 01:55:53,073 INFO L125 PetriNetUnfolderBase]: For 471817/471817 co-relation queries the response was YES. [2024-06-28 01:55:53,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53427 conditions, 7341 events. 4152/7341 cut-off events. For 471817/471817 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 53876 event pairs, 1429 based on Foata normal form. 2/7092 useless extension candidates. Maximal degree in co-relation 53151. Up to 5884 conditions per place. [2024-06-28 01:55:53,209 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 481 selfloop transitions, 202 changer transitions 0/690 dead transitions. [2024-06-28 01:55:53,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 690 transitions, 13412 flow [2024-06-28 01:55:53,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:55:53,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:55:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 01:55:53,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 01:55:53,211 INFO L175 Difference]: Start difference. First operand has 575 places, 661 transitions, 11672 flow. Second operand 11 states and 176 transitions. [2024-06-28 01:55:53,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 690 transitions, 13412 flow [2024-06-28 01:55:59,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 690 transitions, 12784 flow, removed 47 selfloop flow, removed 11 redundant places. [2024-06-28 01:55:59,020 INFO L231 Difference]: Finished difference. Result has 575 places, 663 transitions, 11675 flow [2024-06-28 01:55:59,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11044, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11675, PETRI_PLACES=575, PETRI_TRANSITIONS=663} [2024-06-28 01:55:59,020 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 534 predicate places. [2024-06-28 01:55:59,020 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 663 transitions, 11675 flow [2024-06-28 01:55:59,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:59,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:59,021 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 01:55:59,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-28 01:55:59,021 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:59,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:59,021 INFO L85 PathProgramCache]: Analyzing trace with hash -637100941, now seen corresponding path program 38 times [2024-06-28 01:55:59,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:59,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614262761] [2024-06-28 01:55:59,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:59,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:59,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:59,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614262761] [2024-06-28 01:55:59,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614262761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:59,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:59,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:55:59,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755401579] [2024-06-28 01:55:59,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:59,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:55:59,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:59,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:55:59,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:56:00,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:56:00,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 663 transitions, 11675 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:00,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:00,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:56:00,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:02,527 INFO L124 PetriNetUnfolderBase]: 4168/7370 cut-off events. [2024-06-28 01:56:02,528 INFO L125 PetriNetUnfolderBase]: For 485332/485332 co-relation queries the response was YES. [2024-06-28 01:56:02,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53718 conditions, 7370 events. 4168/7370 cut-off events. For 485332/485332 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 54113 event pairs, 1421 based on Foata normal form. 2/7122 useless extension candidates. Maximal degree in co-relation 53442. Up to 5868 conditions per place. [2024-06-28 01:56:02,680 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 482 selfloop transitions, 205 changer transitions 0/694 dead transitions. [2024-06-28 01:56:02,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 694 transitions, 13439 flow [2024-06-28 01:56:02,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:56:02,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:56:02,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:56:02,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-28 01:56:02,682 INFO L175 Difference]: Start difference. First operand has 575 places, 663 transitions, 11675 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:56:02,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 694 transitions, 13439 flow [2024-06-28 01:56:09,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 694 transitions, 12820 flow, removed 109 selfloop flow, removed 9 redundant places. [2024-06-28 01:56:09,290 INFO L231 Difference]: Finished difference. Result has 577 places, 665 transitions, 11697 flow [2024-06-28 01:56:09,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11058, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11697, PETRI_PLACES=577, PETRI_TRANSITIONS=665} [2024-06-28 01:56:09,290 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 536 predicate places. [2024-06-28 01:56:09,290 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 665 transitions, 11697 flow [2024-06-28 01:56:09,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:09,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:09,291 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 01:56:09,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-28 01:56:09,291 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:09,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:09,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1520359287, now seen corresponding path program 39 times [2024-06-28 01:56:09,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:09,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842524781] [2024-06-28 01:56:09,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:09,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:10,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:10,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:10,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842524781] [2024-06-28 01:56:10,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842524781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:10,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:10,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:56:10,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924235815] [2024-06-28 01:56:10,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:10,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:56:10,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:10,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:56:10,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:56:10,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:56:10,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 665 transitions, 11697 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:10,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:10,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:56:10,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:12,835 INFO L124 PetriNetUnfolderBase]: 4184/7397 cut-off events. [2024-06-28 01:56:12,835 INFO L125 PetriNetUnfolderBase]: For 490338/490338 co-relation queries the response was YES. [2024-06-28 01:56:12,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53899 conditions, 7397 events. 4184/7397 cut-off events. For 490338/490338 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 54353 event pairs, 1429 based on Foata normal form. 2/7150 useless extension candidates. Maximal degree in co-relation 53622. Up to 5826 conditions per place. [2024-06-28 01:56:13,003 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 482 selfloop transitions, 209 changer transitions 0/698 dead transitions. [2024-06-28 01:56:13,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 698 transitions, 13483 flow [2024-06-28 01:56:13,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:56:13,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:56:13,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:56:13,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-28 01:56:13,004 INFO L175 Difference]: Start difference. First operand has 577 places, 665 transitions, 11697 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:56:13,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 698 transitions, 13483 flow [2024-06-28 01:56:19,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 698 transitions, 12860 flow, removed 108 selfloop flow, removed 9 redundant places. [2024-06-28 01:56:19,879 INFO L231 Difference]: Finished difference. Result has 579 places, 667 transitions, 11725 flow [2024-06-28 01:56:19,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11074, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11725, PETRI_PLACES=579, PETRI_TRANSITIONS=667} [2024-06-28 01:56:19,880 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 538 predicate places. [2024-06-28 01:56:19,880 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 667 transitions, 11725 flow [2024-06-28 01:56:19,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:19,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:19,881 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 01:56:19,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-28 01:56:19,881 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:19,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:19,881 INFO L85 PathProgramCache]: Analyzing trace with hash -641742571, now seen corresponding path program 40 times [2024-06-28 01:56:19,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:19,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231485078] [2024-06-28 01:56:19,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:19,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:20,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:20,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231485078] [2024-06-28 01:56:20,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231485078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:20,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:20,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:56:20,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070186551] [2024-06-28 01:56:20,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:20,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:56:20,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:20,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:56:20,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:56:21,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:56:21,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 667 transitions, 11725 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:21,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:21,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:56:21,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:23,897 INFO L124 PetriNetUnfolderBase]: 4284/7584 cut-off events. [2024-06-28 01:56:23,898 INFO L125 PetriNetUnfolderBase]: For 657237/657237 co-relation queries the response was YES. [2024-06-28 01:56:24,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57372 conditions, 7584 events. 4284/7584 cut-off events. For 657237/657237 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 56033 event pairs, 1478 based on Foata normal form. 2/7345 useless extension candidates. Maximal degree in co-relation 57094. Up to 5410 conditions per place. [2024-06-28 01:56:24,047 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 477 selfloop transitions, 225 changer transitions 0/709 dead transitions. [2024-06-28 01:56:24,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 709 transitions, 14143 flow [2024-06-28 01:56:24,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:56:24,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:56:24,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 01:56:24,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-28 01:56:24,050 INFO L175 Difference]: Start difference. First operand has 579 places, 667 transitions, 11725 flow. Second operand 11 states and 190 transitions. [2024-06-28 01:56:24,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 709 transitions, 14143 flow [2024-06-28 01:56:31,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 709 transitions, 13508 flow, removed 110 selfloop flow, removed 9 redundant places. [2024-06-28 01:56:31,509 INFO L231 Difference]: Finished difference. Result has 581 places, 671 transitions, 12005 flow [2024-06-28 01:56:31,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11090, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12005, PETRI_PLACES=581, PETRI_TRANSITIONS=671} [2024-06-28 01:56:31,509 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 540 predicate places. [2024-06-28 01:56:31,510 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 671 transitions, 12005 flow [2024-06-28 01:56:31,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:31,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:31,510 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 01:56:31,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-28 01:56:31,510 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:31,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:31,510 INFO L85 PathProgramCache]: Analyzing trace with hash 591109547, now seen corresponding path program 41 times [2024-06-28 01:56:31,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:31,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447225183] [2024-06-28 01:56:31,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:31,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:32,552 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 01:56:32,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:32,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447225183] [2024-06-28 01:56:32,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447225183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:32,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:32,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:56:32,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998594175] [2024-06-28 01:56:32,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:32,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:56:32,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:32,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:56:32,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:56:32,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:56:32,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 671 transitions, 12005 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:32,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:32,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:56:32,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:35,453 INFO L124 PetriNetUnfolderBase]: 4300/7613 cut-off events. [2024-06-28 01:56:35,454 INFO L125 PetriNetUnfolderBase]: For 667331/667331 co-relation queries the response was YES. [2024-06-28 01:56:35,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57633 conditions, 7613 events. 4300/7613 cut-off events. For 667331/667331 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 56236 event pairs, 1504 based on Foata normal form. 2/7361 useless extension candidates. Maximal degree in co-relation 57354. Up to 6152 conditions per place. [2024-06-28 01:56:35,623 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 508 selfloop transitions, 185 changer transitions 0/700 dead transitions. [2024-06-28 01:56:35,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 700 transitions, 13779 flow [2024-06-28 01:56:35,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:56:35,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:56:35,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 01:56:35,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-28 01:56:35,624 INFO L175 Difference]: Start difference. First operand has 581 places, 671 transitions, 12005 flow. Second operand 11 states and 178 transitions. [2024-06-28 01:56:35,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 700 transitions, 13779 flow [2024-06-28 01:56:43,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 700 transitions, 13085 flow, removed 147 selfloop flow, removed 8 redundant places. [2024-06-28 01:56:43,689 INFO L231 Difference]: Finished difference. Result has 584 places, 673 transitions, 11922 flow [2024-06-28 01:56:43,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11345, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11922, PETRI_PLACES=584, PETRI_TRANSITIONS=673} [2024-06-28 01:56:43,690 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 543 predicate places. [2024-06-28 01:56:43,690 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 673 transitions, 11922 flow [2024-06-28 01:56:43,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:43,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:43,690 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 01:56:43,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-28 01:56:43,691 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:43,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:43,691 INFO L85 PathProgramCache]: Analyzing trace with hash 363208397, now seen corresponding path program 42 times [2024-06-28 01:56:43,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:43,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115649003] [2024-06-28 01:56:43,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:43,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:44,729 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 01:56:44,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:44,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115649003] [2024-06-28 01:56:44,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115649003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:44,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:44,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:56:44,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850579661] [2024-06-28 01:56:44,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:44,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:56:44,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:44,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:56:44,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:56:44,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:56:44,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 673 transitions, 11922 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:44,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:44,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:56:44,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:48,044 INFO L124 PetriNetUnfolderBase]: 4316/7641 cut-off events. [2024-06-28 01:56:48,044 INFO L125 PetriNetUnfolderBase]: For 655628/655628 co-relation queries the response was YES. [2024-06-28 01:56:48,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57338 conditions, 7641 events. 4316/7641 cut-off events. For 655628/655628 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 56546 event pairs, 1517 based on Foata normal form. 2/7389 useless extension candidates. Maximal degree in co-relation 57058. Up to 6180 conditions per place. [2024-06-28 01:56:48,192 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 510 selfloop transitions, 185 changer transitions 0/702 dead transitions. [2024-06-28 01:56:48,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 702 transitions, 13670 flow [2024-06-28 01:56:48,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:56:48,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:56:48,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 01:56:48,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-28 01:56:48,193 INFO L175 Difference]: Start difference. First operand has 584 places, 673 transitions, 11922 flow. Second operand 11 states and 179 transitions. [2024-06-28 01:56:48,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 702 transitions, 13670 flow [2024-06-28 01:56:56,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 702 transitions, 13113 flow, removed 95 selfloop flow, removed 9 redundant places. [2024-06-28 01:56:56,268 INFO L231 Difference]: Finished difference. Result has 586 places, 675 transitions, 11946 flow [2024-06-28 01:56:56,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11365, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11946, PETRI_PLACES=586, PETRI_TRANSITIONS=675} [2024-06-28 01:56:56,268 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 545 predicate places. [2024-06-28 01:56:56,269 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 675 transitions, 11946 flow [2024-06-28 01:56:56,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:56,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:56,269 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 01:56:56,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-28 01:56:56,269 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:56,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:56,269 INFO L85 PathProgramCache]: Analyzing trace with hash 363201887, now seen corresponding path program 43 times [2024-06-28 01:56:56,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:56,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268920713] [2024-06-28 01:56:56,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:56,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:57,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:57,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:57,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268920713] [2024-06-28 01:56:57,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268920713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:57,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:57,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:56:57,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412120888] [2024-06-28 01:56:57,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:57,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:56:57,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:57,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:56:57,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:56:57,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:56:57,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 675 transitions, 11946 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:57,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:57,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:56:57,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:00,737 INFO L124 PetriNetUnfolderBase]: 4332/7669 cut-off events. [2024-06-28 01:57:00,737 INFO L125 PetriNetUnfolderBase]: For 663252/663252 co-relation queries the response was YES. [2024-06-28 01:57:00,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57535 conditions, 7669 events. 4332/7669 cut-off events. For 663252/663252 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 56801 event pairs, 1517 based on Foata normal form. 2/7418 useless extension candidates. Maximal degree in co-relation 57254. Up to 6164 conditions per place. [2024-06-28 01:57:00,902 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 511 selfloop transitions, 188 changer transitions 0/706 dead transitions. [2024-06-28 01:57:00,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 706 transitions, 13718 flow [2024-06-28 01:57:00,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:57:00,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:57:00,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:57:00,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-28 01:57:00,903 INFO L175 Difference]: Start difference. First operand has 586 places, 675 transitions, 11946 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:57:00,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 706 transitions, 13718 flow Killed by 15