./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi000_power.opt_pso.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi000_power.opt_pso.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:38:50,124 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:38:50,230 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:38:50,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:38:50,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:38:50,268 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:38:50,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:38:50,269 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:38:50,270 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:38:50,273 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:38:50,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:38:50,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:38:50,274 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:38:50,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:38:50,275 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:38:50,275 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:38:50,276 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:38:50,276 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:38:50,276 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:38:50,276 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:38:50,276 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:38:50,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:38:50,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:38:50,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:38:50,277 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:38:50,278 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:38:50,278 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:38:50,278 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:38:50,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:38:50,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:38:50,280 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:38:50,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:38:50,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:38:50,280 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:38:50,280 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:38:50,281 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:38:50,281 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:38:50,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:38:50,281 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:38:50,281 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:38:50,281 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:38:50,282 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:38:50,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:38:50,282 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:38:50,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:38:50,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:38:50,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:38:50,569 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:38:50,569 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:38:50,570 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i [2024-06-28 03:38:51,571 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:38:51,821 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:38:51,821 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i [2024-06-28 03:38:51,834 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90ee25bc7/f7f5f054d6094d5f9efd966241db1148/FLAG30360303d [2024-06-28 03:38:51,844 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90ee25bc7/f7f5f054d6094d5f9efd966241db1148 [2024-06-28 03:38:51,846 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:38:51,846 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:38:51,849 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi000_power.opt_pso.opt_rmo.opt.yml/witness.yml [2024-06-28 03:38:51,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:38:51,960 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:38:51,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:38:51,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:38:51,966 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:38:51,967 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:38:51" (1/2) ... [2024-06-28 03:38:51,968 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@250c17de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:51, skipping insertion in model container [2024-06-28 03:38:51,969 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:38:51" (1/2) ... [2024-06-28 03:38:51,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7ac1a2ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:51, skipping insertion in model container [2024-06-28 03:38:51,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:38:51" (2/2) ... [2024-06-28 03:38:51,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@250c17de and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:51, skipping insertion in model container [2024-06-28 03:38:51,972 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:38:51" (2/2) ... [2024-06-28 03:38:51,972 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:38:52,025 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:38:52,026 INFO L97 edCorrectnessWitness]: Location invariant before [L804-L804] ((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:38:52,027 INFO L97 edCorrectnessWitness]: Location invariant before [L803-L803] ((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:38:52,027 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:38:52,027 INFO L106 edCorrectnessWitness]: ghost_update [L801-L801] multithreaded = 1; [2024-06-28 03:38:52,065 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:38:52,388 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:38:52,399 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:38:52,506 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:38:52,537 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:38:52,538 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:52 WrapperNode [2024-06-28 03:38:52,538 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:38:52,539 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:38:52,539 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:38:52,539 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:38:52,545 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 03:38:52" (1/1) ... [2024-06-28 03:38:52,571 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 03:38:52" (1/1) ... [2024-06-28 03:38:52,593 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-28 03:38:52,594 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:38:52,594 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:38:52,594 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:38:52,595 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:38:52,603 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 03:38:52" (1/1) ... [2024-06-28 03:38:52,603 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 03:38:52" (1/1) ... [2024-06-28 03:38:52,605 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 03:38:52" (1/1) ... [2024-06-28 03:38:52,616 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 03:38:52,616 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 03:38:52" (1/1) ... [2024-06-28 03:38:52,616 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 03:38:52" (1/1) ... [2024-06-28 03:38:52,622 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 03:38:52" (1/1) ... [2024-06-28 03:38:52,623 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 03:38:52" (1/1) ... [2024-06-28 03:38:52,624 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 03:38:52" (1/1) ... [2024-06-28 03:38:52,626 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 03:38:52" (1/1) ... [2024-06-28 03:38:52,628 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:38:52,628 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:38:52,629 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:38:52,629 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:38:52,629 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 03:38:52" (1/1) ... [2024-06-28 03:38:52,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:38:52,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:38:52,657 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 03:38:52,659 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 03:38:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:38:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:38:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:38:52,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:38:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:38:52,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:38:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:38:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:38:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:38:52,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:38:52,700 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 03:38:52,801 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:38:52,803 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:38:53,047 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:38:53,048 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:38:53,145 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:38:53,145 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:38:53,146 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:38:53 BoogieIcfgContainer [2024-06-28 03:38:53,146 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:38:53,147 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:38:53,147 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:38:53,150 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:38:53,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:38:51" (1/4) ... [2024-06-28 03:38:53,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b90c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:38:53, skipping insertion in model container [2024-06-28 03:38:53,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:38:51" (2/4) ... [2024-06-28 03:38:53,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b90c18 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:38:53, skipping insertion in model container [2024-06-28 03:38:53,151 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 03:38:52" (3/4) ... [2024-06-28 03:38:53,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b90c18 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:38:53, skipping insertion in model container [2024-06-28 03:38:53,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:38:53" (4/4) ... [2024-06-28 03:38:53,152 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_power.opt_pso.opt_rmo.opt.i [2024-06-28 03:38:53,166 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:38:53,166 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 03:38:53,166 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:38:53,200 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:38:53,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 03:38:53,259 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-28 03:38:53,260 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:38:53,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:38:53,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 03:38:53,264 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-28 03:38:53,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:38:53,281 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;@369fd5ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:38:53,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 03:38:53,284 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:38:53,285 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:38:53,285 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:38:53,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:53,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:38:53,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:38:53,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:53,290 INFO L85 PathProgramCache]: Analyzing trace with hash 328598881, now seen corresponding path program 1 times [2024-06-28 03:38:53,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:53,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563850154] [2024-06-28 03:38:53,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:53,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:53,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:53,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:53,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563850154] [2024-06-28 03:38:53,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563850154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:53,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:53,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:38:53,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824624722] [2024-06-28 03:38:53,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:53,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:38:53,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:53,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:38:53,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:38:54,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 03:38:54,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:54,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:54,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 03:38:54,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:54,117 INFO L124 PetriNetUnfolderBase]: 162/316 cut-off events. [2024-06-28 03:38:54,118 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 03:38:54,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 316 events. 162/316 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1171 event pairs, 97 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 616. Up to 288 conditions per place. [2024-06-28 03:38:54,122 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-28 03:38:54,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 115 flow [2024-06-28 03:38:54,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:38:54,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:38:54,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-28 03:38:54,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-06-28 03:38:54,134 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 53 transitions. [2024-06-28 03:38:54,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 115 flow [2024-06-28 03:38:54,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 03:38:54,154 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-28 03:38:54,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-28 03:38:54,159 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-28 03:38:54,160 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-28 03:38:54,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:54,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:54,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:54,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:38:54,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:38:54,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:54,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2044034496, now seen corresponding path program 1 times [2024-06-28 03:38:54,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:54,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463743061] [2024-06-28 03:38:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:54,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:54,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:54,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463743061] [2024-06-28 03:38:54,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463743061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:54,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:54,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:38:54,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346968089] [2024-06-28 03:38:54,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:54,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:38:54,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:54,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:38:54,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:38:54,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 03:38:54,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:54,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:54,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 03:38:54,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:54,668 INFO L124 PetriNetUnfolderBase]: 213/381 cut-off events. [2024-06-28 03:38:54,668 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-06-28 03:38:54,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 381 events. 213/381 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1345 event pairs, 109 based on Foata normal form. 2/382 useless extension candidates. Maximal degree in co-relation 865. Up to 364 conditions per place. [2024-06-28 03:38:54,671 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 27 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-28 03:38:54,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 161 flow [2024-06-28 03:38:54,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:38:54,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:38:54,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-06-28 03:38:54,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:38:54,673 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 62 transitions. [2024-06-28 03:38:54,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 161 flow [2024-06-28 03:38:54,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:38:54,674 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-28 03:38:54,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-28 03:38:54,675 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-28 03:38:54,675 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-28 03:38:54,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:54,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:54,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:54,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:38:54,676 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:38:54,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:54,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1059440774, now seen corresponding path program 1 times [2024-06-28 03:38:54,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:54,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413157021] [2024-06-28 03:38:54,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:54,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:54,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:55,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413157021] [2024-06-28 03:38:55,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413157021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:55,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:55,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:38:55,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980768081] [2024-06-28 03:38:55,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:55,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:38:55,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:55,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:38:55,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:38:55,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 03:38:55,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:55,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:55,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 03:38:55,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:55,119 INFO L124 PetriNetUnfolderBase]: 207/371 cut-off events. [2024-06-28 03:38:55,120 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2024-06-28 03:38:55,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 371 events. 207/371 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1274 event pairs, 61 based on Foata normal form. 4/374 useless extension candidates. Maximal degree in co-relation 930. Up to 336 conditions per place. [2024-06-28 03:38:55,124 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 32 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-28 03:38:55,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 213 flow [2024-06-28 03:38:55,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:38:55,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:38:55,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-06-28 03:38:55,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49032258064516127 [2024-06-28 03:38:55,128 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 76 transitions. [2024-06-28 03:38:55,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 213 flow [2024-06-28 03:38:55,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 204 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 03:38:55,131 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-28 03:38:55,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-28 03:38:55,132 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-28 03:38:55,133 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-28 03:38:55,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:55,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:55,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:55,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:38:55,134 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:38:55,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:55,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1503579947, now seen corresponding path program 1 times [2024-06-28 03:38:55,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:55,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111092324] [2024-06-28 03:38:55,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:55,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:55,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:55,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111092324] [2024-06-28 03:38:55,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111092324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:55,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:55,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:38:55,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745906371] [2024-06-28 03:38:55,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:55,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:38:55,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:55,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:38:55,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:38:55,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 03:38:55,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:55,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:55,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 03:38:55,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:56,049 INFO L124 PetriNetUnfolderBase]: 203/363 cut-off events. [2024-06-28 03:38:56,049 INFO L125 PetriNetUnfolderBase]: For 359/359 co-relation queries the response was YES. [2024-06-28 03:38:56,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1005 conditions, 363 events. 203/363 cut-off events. For 359/359 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1228 event pairs, 36 based on Foata normal form. 4/366 useless extension candidates. Maximal degree in co-relation 990. Up to 310 conditions per place. [2024-06-28 03:38:56,051 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 32 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-28 03:38:56,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 227 flow [2024-06-28 03:38:56,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:38:56,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:38:56,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-28 03:38:56,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-28 03:38:56,052 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 84 transitions. [2024-06-28 03:38:56,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 227 flow [2024-06-28 03:38:56,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 212 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 03:38:56,054 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 116 flow [2024-06-28 03:38:56,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2024-06-28 03:38:56,055 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-28 03:38:56,055 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 116 flow [2024-06-28 03:38:56,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:56,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:56,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:56,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:38:56,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:38:56,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:56,056 INFO L85 PathProgramCache]: Analyzing trace with hash -57901863, now seen corresponding path program 1 times [2024-06-28 03:38:56,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:56,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337515348] [2024-06-28 03:38:56,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:56,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:56,429 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 03:38:56,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:56,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337515348] [2024-06-28 03:38:56,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337515348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:56,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:56,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:38:56,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329545913] [2024-06-28 03:38:56,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:56,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:38:56,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:56,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:38:56,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:38:56,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 03:38:56,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:56,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:56,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 03:38:56,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:56,563 INFO L124 PetriNetUnfolderBase]: 147/294 cut-off events. [2024-06-28 03:38:56,563 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-28 03:38:56,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 294 events. 147/294 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1053 event pairs, 53 based on Foata normal form. 1/288 useless extension candidates. Maximal degree in co-relation 804. Up to 259 conditions per place. [2024-06-28 03:38:56,565 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 25 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-28 03:38:56,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 196 flow [2024-06-28 03:38:56,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:38:56,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:38:56,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-06-28 03:38:56,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 03:38:56,566 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 116 flow. Second operand 5 states and 63 transitions. [2024-06-28 03:38:56,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 196 flow [2024-06-28 03:38:56,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 176 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:56,568 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 123 flow [2024-06-28 03:38:56,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-28 03:38:56,569 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-06-28 03:38:56,569 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 123 flow [2024-06-28 03:38:56,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:56,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:56,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:56,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:38:56,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:38:56,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:56,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1794956527, now seen corresponding path program 1 times [2024-06-28 03:38:56,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:56,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567495691] [2024-06-28 03:38:56,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:56,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:57,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:57,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567495691] [2024-06-28 03:38:57,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567495691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:57,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:57,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:38:57,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864634830] [2024-06-28 03:38:57,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:57,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:38:57,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:57,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:38:57,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:38:57,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:57,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:57,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:57,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:57,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:57,141 INFO L124 PetriNetUnfolderBase]: 203/365 cut-off events. [2024-06-28 03:38:57,142 INFO L125 PetriNetUnfolderBase]: For 707/707 co-relation queries the response was YES. [2024-06-28 03:38:57,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1105 conditions, 365 events. 203/365 cut-off events. For 707/707 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1263 event pairs, 71 based on Foata normal form. 2/366 useless extension candidates. Maximal degree in co-relation 1086. Up to 327 conditions per place. [2024-06-28 03:38:57,143 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 29 selfloop transitions, 14 changer transitions 0/45 dead transitions. [2024-06-28 03:38:57,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 271 flow [2024-06-28 03:38:57,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:57,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-28 03:38:57,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3456221198156682 [2024-06-28 03:38:57,145 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 123 flow. Second operand 7 states and 75 transitions. [2024-06-28 03:38:57,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 271 flow [2024-06-28 03:38:57,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 258 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 03:38:57,147 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 197 flow [2024-06-28 03:38:57,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=197, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2024-06-28 03:38:57,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-06-28 03:38:57,147 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 197 flow [2024-06-28 03:38:57,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:57,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:57,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:57,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:38:57,148 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:38:57,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:57,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1238468098, now seen corresponding path program 1 times [2024-06-28 03:38:57,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:57,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195625609] [2024-06-28 03:38:57,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:57,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:57,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:57,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:57,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195625609] [2024-06-28 03:38:57,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195625609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:57,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:57,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:38:57,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332663252] [2024-06-28 03:38:57,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:57,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:38:57,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:57,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:38:57,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:38:57,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:57,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 197 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:57,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:57,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:57,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:57,703 INFO L124 PetriNetUnfolderBase]: 210/377 cut-off events. [2024-06-28 03:38:57,703 INFO L125 PetriNetUnfolderBase]: For 1012/1012 co-relation queries the response was YES. [2024-06-28 03:38:57,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 377 events. 210/377 cut-off events. For 1012/1012 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1290 event pairs, 75 based on Foata normal form. 1/377 useless extension candidates. Maximal degree in co-relation 1287. Up to 354 conditions per place. [2024-06-28 03:38:57,705 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 38 selfloop transitions, 12 changer transitions 0/52 dead transitions. [2024-06-28 03:38:57,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 356 flow [2024-06-28 03:38:57,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:57,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:57,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-28 03:38:57,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3456221198156682 [2024-06-28 03:38:57,707 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 197 flow. Second operand 7 states and 75 transitions. [2024-06-28 03:38:57,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 356 flow [2024-06-28 03:38:57,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 348 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 03:38:57,709 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 264 flow [2024-06-28 03:38:57,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=264, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-06-28 03:38:57,710 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-06-28 03:38:57,710 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 264 flow [2024-06-28 03:38:57,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:57,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:57,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:57,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:38:57,711 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:38:57,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:57,711 INFO L85 PathProgramCache]: Analyzing trace with hash -396616318, now seen corresponding path program 2 times [2024-06-28 03:38:57,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:57,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95975131] [2024-06-28 03:38:57,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:57,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:58,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:58,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95975131] [2024-06-28 03:38:58,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95975131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:58,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:58,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:38:58,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883522631] [2024-06-28 03:38:58,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:58,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:38:58,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:58,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:38:58,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:38:58,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:58,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:58,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:58,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:58,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:58,295 INFO L124 PetriNetUnfolderBase]: 213/382 cut-off events. [2024-06-28 03:38:58,295 INFO L125 PetriNetUnfolderBase]: For 1387/1387 co-relation queries the response was YES. [2024-06-28 03:38:58,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1418 conditions, 382 events. 213/382 cut-off events. For 1387/1387 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1310 event pairs, 74 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 1392. Up to 356 conditions per place. [2024-06-28 03:38:58,298 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 37 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-06-28 03:38:58,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 401 flow [2024-06-28 03:38:58,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:38:58,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:38:58,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2024-06-28 03:38:58,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:38:58,299 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 264 flow. Second operand 6 states and 66 transitions. [2024-06-28 03:38:58,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 401 flow [2024-06-28 03:38:58,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 378 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:58,301 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 298 flow [2024-06-28 03:38:58,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-06-28 03:38:58,302 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-06-28 03:38:58,302 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 298 flow [2024-06-28 03:38:58,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:58,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:58,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:58,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:38:58,303 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:38:58,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:58,303 INFO L85 PathProgramCache]: Analyzing trace with hash 190915832, now seen corresponding path program 3 times [2024-06-28 03:38:58,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:58,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722815424] [2024-06-28 03:38:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:58,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:58,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:58,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:58,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722815424] [2024-06-28 03:38:58,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722815424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:58,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:58,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:38:58,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269270496] [2024-06-28 03:38:58,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:58,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:38:58,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:58,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:38:58,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:38:58,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:58,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:58,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:58,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:58,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:58,904 INFO L124 PetriNetUnfolderBase]: 208/374 cut-off events. [2024-06-28 03:38:58,904 INFO L125 PetriNetUnfolderBase]: For 1731/1731 co-relation queries the response was YES. [2024-06-28 03:38:58,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 374 events. 208/374 cut-off events. For 1731/1731 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1282 event pairs, 77 based on Foata normal form. 2/375 useless extension candidates. Maximal degree in co-relation 1398. Up to 329 conditions per place. [2024-06-28 03:38:58,906 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 30 selfloop transitions, 19 changer transitions 0/51 dead transitions. [2024-06-28 03:38:58,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 417 flow [2024-06-28 03:38:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:58,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:58,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-28 03:38:58,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34101382488479265 [2024-06-28 03:38:58,908 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 298 flow. Second operand 7 states and 74 transitions. [2024-06-28 03:38:58,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 417 flow [2024-06-28 03:38:58,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 383 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:58,912 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 311 flow [2024-06-28 03:38:58,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=311, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2024-06-28 03:38:58,913 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-06-28 03:38:58,913 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 311 flow [2024-06-28 03:38:58,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:58,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:58,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:58,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:38:58,913 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:38:58,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:58,914 INFO L85 PathProgramCache]: Analyzing trace with hash -390894462, now seen corresponding path program 1 times [2024-06-28 03:38:58,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:58,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649708895] [2024-06-28 03:38:58,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:58,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:59,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:59,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:59,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649708895] [2024-06-28 03:38:59,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649708895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:59,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:59,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:38:59,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932618278] [2024-06-28 03:38:59,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:59,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:38:59,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:59,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:38:59,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:38:59,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:59,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 311 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:59,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:59,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:59,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:59,529 INFO L124 PetriNetUnfolderBase]: 209/377 cut-off events. [2024-06-28 03:38:59,529 INFO L125 PetriNetUnfolderBase]: For 1671/1671 co-relation queries the response was YES. [2024-06-28 03:38:59,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 377 events. 209/377 cut-off events. For 1671/1671 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1297 event pairs, 75 based on Foata normal form. 2/378 useless extension candidates. Maximal degree in co-relation 1405. Up to 319 conditions per place. [2024-06-28 03:38:59,531 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 32 selfloop transitions, 23 changer transitions 0/57 dead transitions. [2024-06-28 03:38:59,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 57 transitions, 477 flow [2024-06-28 03:38:59,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:59,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 03:38:59,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-28 03:38:59,532 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 311 flow. Second operand 7 states and 78 transitions. [2024-06-28 03:38:59,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 57 transitions, 477 flow [2024-06-28 03:38:59,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 426 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:38:59,535 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 342 flow [2024-06-28 03:38:59,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=342, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-06-28 03:38:59,536 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-28 03:38:59,536 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 342 flow [2024-06-28 03:38:59,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:59,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:59,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:59,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:38:59,537 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:38:59,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:59,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1947143788, now seen corresponding path program 1 times [2024-06-28 03:38:59,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:59,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757337705] [2024-06-28 03:38:59,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:59,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:59,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:59,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:59,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757337705] [2024-06-28 03:38:59,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757337705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:59,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:59,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:38:59,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220425356] [2024-06-28 03:38:59,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:59,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:38:59,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:59,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:38:59,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:38:59,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:59,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 342 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:59,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:59,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:59,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:00,197 INFO L124 PetriNetUnfolderBase]: 215/386 cut-off events. [2024-06-28 03:39:00,198 INFO L125 PetriNetUnfolderBase]: For 2018/2018 co-relation queries the response was YES. [2024-06-28 03:39:00,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1546 conditions, 386 events. 215/386 cut-off events. For 2018/2018 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1323 event pairs, 50 based on Foata normal form. 2/387 useless extension candidates. Maximal degree in co-relation 1517. Up to 339 conditions per place. [2024-06-28 03:39:00,200 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 50 selfloop transitions, 15 changer transitions 0/67 dead transitions. [2024-06-28 03:39:00,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 67 transitions, 524 flow [2024-06-28 03:39:00,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:00,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:00,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-28 03:39:00,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-28 03:39:00,201 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 342 flow. Second operand 7 states and 79 transitions. [2024-06-28 03:39:00,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 67 transitions, 524 flow [2024-06-28 03:39:00,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 67 transitions, 498 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:00,205 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 378 flow [2024-06-28 03:39:00,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=378, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-06-28 03:39:00,206 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2024-06-28 03:39:00,207 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 378 flow [2024-06-28 03:39:00,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:00,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:00,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:00,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:39:00,208 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:00,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:00,208 INFO L85 PathProgramCache]: Analyzing trace with hash 760499500, now seen corresponding path program 2 times [2024-06-28 03:39:00,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:00,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230163436] [2024-06-28 03:39:00,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:00,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:00,620 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 03:39:00,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:00,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230163436] [2024-06-28 03:39:00,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230163436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:00,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:00,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:00,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380871121] [2024-06-28 03:39:00,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:00,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:00,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:00,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:00,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:00,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:00,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 378 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:00,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:00,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:00,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:00,808 INFO L124 PetriNetUnfolderBase]: 240/430 cut-off events. [2024-06-28 03:39:00,808 INFO L125 PetriNetUnfolderBase]: For 2636/2636 co-relation queries the response was YES. [2024-06-28 03:39:00,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1858 conditions, 430 events. 240/430 cut-off events. For 2636/2636 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1562 event pairs, 53 based on Foata normal form. 2/431 useless extension candidates. Maximal degree in co-relation 1826. Up to 361 conditions per place. [2024-06-28 03:39:00,810 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 52 selfloop transitions, 24 changer transitions 0/78 dead transitions. [2024-06-28 03:39:00,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 78 transitions, 675 flow [2024-06-28 03:39:00,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:00,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:00,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 03:39:00,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 03:39:00,812 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 378 flow. Second operand 8 states and 90 transitions. [2024-06-28 03:39:00,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 78 transitions, 675 flow [2024-06-28 03:39:00,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 78 transitions, 644 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:00,815 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 522 flow [2024-06-28 03:39:00,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=522, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2024-06-28 03:39:00,815 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2024-06-28 03:39:00,816 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 522 flow [2024-06-28 03:39:00,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:00,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:00,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:00,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:39:00,816 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:00,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:00,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1623424536, now seen corresponding path program 3 times [2024-06-28 03:39:00,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:00,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564937835] [2024-06-28 03:39:00,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:00,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:01,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:01,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564937835] [2024-06-28 03:39:01,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564937835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:01,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:01,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:01,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167473106] [2024-06-28 03:39:01,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:01,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:01,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:01,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:01,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:01,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:01,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 522 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:01,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:01,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:01,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:01,436 INFO L124 PetriNetUnfolderBase]: 252/450 cut-off events. [2024-06-28 03:39:01,436 INFO L125 PetriNetUnfolderBase]: For 3415/3415 co-relation queries the response was YES. [2024-06-28 03:39:01,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2062 conditions, 450 events. 252/450 cut-off events. For 3415/3415 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1658 event pairs, 52 based on Foata normal form. 4/453 useless extension candidates. Maximal degree in co-relation 2026. Up to 296 conditions per place. [2024-06-28 03:39:01,439 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 52 selfloop transitions, 27 changer transitions 0/81 dead transitions. [2024-06-28 03:39:01,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 81 transitions, 770 flow [2024-06-28 03:39:01,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:01,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:01,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-28 03:39:01,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778801843317972 [2024-06-28 03:39:01,440 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 522 flow. Second operand 7 states and 82 transitions. [2024-06-28 03:39:01,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 81 transitions, 770 flow [2024-06-28 03:39:01,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 81 transitions, 749 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 03:39:01,444 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 601 flow [2024-06-28 03:39:01,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=601, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2024-06-28 03:39:01,445 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-28 03:39:01,445 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 601 flow [2024-06-28 03:39:01,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:01,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:01,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:01,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:39:01,446 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:01,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:01,446 INFO L85 PathProgramCache]: Analyzing trace with hash -262193586, now seen corresponding path program 4 times [2024-06-28 03:39:01,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:01,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912729514] [2024-06-28 03:39:01,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:01,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:01,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:01,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912729514] [2024-06-28 03:39:01,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912729514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:01,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:01,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:01,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853281210] [2024-06-28 03:39:01,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:01,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:01,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:01,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:01,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:01,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:01,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 601 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:01,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:01,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:01,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:02,053 INFO L124 PetriNetUnfolderBase]: 253/452 cut-off events. [2024-06-28 03:39:02,054 INFO L125 PetriNetUnfolderBase]: For 3854/3854 co-relation queries the response was YES. [2024-06-28 03:39:02,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2196 conditions, 452 events. 253/452 cut-off events. For 3854/3854 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1652 event pairs, 50 based on Foata normal form. 2/453 useless extension candidates. Maximal degree in co-relation 2158. Up to 383 conditions per place. [2024-06-28 03:39:02,057 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 63 selfloop transitions, 24 changer transitions 0/89 dead transitions. [2024-06-28 03:39:02,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 89 transitions, 884 flow [2024-06-28 03:39:02,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:02,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:02,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-28 03:39:02,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-28 03:39:02,058 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 601 flow. Second operand 8 states and 91 transitions. [2024-06-28 03:39:02,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 89 transitions, 884 flow [2024-06-28 03:39:02,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 89 transitions, 850 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:02,066 INFO L231 Difference]: Finished difference. Result has 82 places, 75 transitions, 668 flow [2024-06-28 03:39:02,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=668, PETRI_PLACES=82, PETRI_TRANSITIONS=75} [2024-06-28 03:39:02,067 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-28 03:39:02,067 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 75 transitions, 668 flow [2024-06-28 03:39:02,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:02,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:02,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:02,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:39:02,068 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:02,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:02,068 INFO L85 PathProgramCache]: Analyzing trace with hash 767174854, now seen corresponding path program 1 times [2024-06-28 03:39:02,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:02,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845564415] [2024-06-28 03:39:02,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:02,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:02,559 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 03:39:02,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:02,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845564415] [2024-06-28 03:39:02,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845564415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:02,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:02,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:02,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201353527] [2024-06-28 03:39:02,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:02,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:02,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:02,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:02,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:02,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:02,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 668 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:02,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:02,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:02,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:02,747 INFO L124 PetriNetUnfolderBase]: 254/453 cut-off events. [2024-06-28 03:39:02,747 INFO L125 PetriNetUnfolderBase]: For 4285/4285 co-relation queries the response was YES. [2024-06-28 03:39:02,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 453 events. 254/453 cut-off events. For 4285/4285 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1657 event pairs, 52 based on Foata normal form. 2/454 useless extension candidates. Maximal degree in co-relation 2218. Up to 382 conditions per place. [2024-06-28 03:39:02,752 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 59 selfloop transitions, 27 changer transitions 0/88 dead transitions. [2024-06-28 03:39:02,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 88 transitions, 914 flow [2024-06-28 03:39:02,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:02,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:02,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 03:39:02,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:39:02,754 INFO L175 Difference]: Start difference. First operand has 82 places, 75 transitions, 668 flow. Second operand 8 states and 88 transitions. [2024-06-28 03:39:02,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 88 transitions, 914 flow [2024-06-28 03:39:02,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 875 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:02,762 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 725 flow [2024-06-28 03:39:02,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=725, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2024-06-28 03:39:02,763 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2024-06-28 03:39:02,763 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 725 flow [2024-06-28 03:39:02,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:02,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:02,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:02,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:39:02,764 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:02,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:02,764 INFO L85 PathProgramCache]: Analyzing trace with hash 231826145, now seen corresponding path program 1 times [2024-06-28 03:39:02,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:02,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423460875] [2024-06-28 03:39:02,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:02,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:03,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:03,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:03,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423460875] [2024-06-28 03:39:03,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423460875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:03,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:03,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:03,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147640858] [2024-06-28 03:39:03,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:03,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:03,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:03,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:03,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:03,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:03,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 725 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:03,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:03,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:03,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:03,686 INFO L124 PetriNetUnfolderBase]: 250/448 cut-off events. [2024-06-28 03:39:03,687 INFO L125 PetriNetUnfolderBase]: For 4562/4562 co-relation queries the response was YES. [2024-06-28 03:39:03,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2286 conditions, 448 events. 250/448 cut-off events. For 4562/4562 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1627 event pairs, 51 based on Foata normal form. 2/449 useless extension candidates. Maximal degree in co-relation 2245. Up to 380 conditions per place. [2024-06-28 03:39:03,690 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 64 selfloop transitions, 25 changer transitions 0/91 dead transitions. [2024-06-28 03:39:03,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 91 transitions, 933 flow [2024-06-28 03:39:03,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:03,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:03,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-28 03:39:03,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-28 03:39:03,691 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 725 flow. Second operand 7 states and 79 transitions. [2024-06-28 03:39:03,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 91 transitions, 933 flow [2024-06-28 03:39:03,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 91 transitions, 889 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:03,697 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 745 flow [2024-06-28 03:39:03,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=745, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2024-06-28 03:39:03,698 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-28 03:39:03,698 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 745 flow [2024-06-28 03:39:03,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:03,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:03,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:03,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:39:03,698 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:03,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:03,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1535782814, now seen corresponding path program 1 times [2024-06-28 03:39:03,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:03,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899341261] [2024-06-28 03:39:03,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:03,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:04,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:04,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899341261] [2024-06-28 03:39:04,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899341261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:04,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:04,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:04,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939859328] [2024-06-28 03:39:04,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:04,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:04,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:04,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:04,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:04,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:04,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 745 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:04,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:04,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:04,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:04,371 INFO L124 PetriNetUnfolderBase]: 256/457 cut-off events. [2024-06-28 03:39:04,371 INFO L125 PetriNetUnfolderBase]: For 5192/5192 co-relation queries the response was YES. [2024-06-28 03:39:04,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2400 conditions, 457 events. 256/457 cut-off events. For 5192/5192 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1684 event pairs, 52 based on Foata normal form. 2/458 useless extension candidates. Maximal degree in co-relation 2357. Up to 384 conditions per place. [2024-06-28 03:39:04,375 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 69 selfloop transitions, 22 changer transitions 0/93 dead transitions. [2024-06-28 03:39:04,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 93 transitions, 983 flow [2024-06-28 03:39:04,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:04,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:04,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 03:39:04,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-28 03:39:04,376 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 745 flow. Second operand 7 states and 78 transitions. [2024-06-28 03:39:04,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 93 transitions, 983 flow [2024-06-28 03:39:04,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 93 transitions, 941 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:04,387 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 775 flow [2024-06-28 03:39:04,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=775, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2024-06-28 03:39:04,388 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-28 03:39:04,388 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 775 flow [2024-06-28 03:39:04,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:04,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:04,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:04,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:39:04,388 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:04,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:04,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1905629726, now seen corresponding path program 2 times [2024-06-28 03:39:04,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:04,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178861325] [2024-06-28 03:39:04,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:04,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:04,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:04,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:04,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178861325] [2024-06-28 03:39:04,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178861325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:04,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:04,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:04,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979003974] [2024-06-28 03:39:04,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:04,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:04,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:04,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:04,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:04,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:04,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 775 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:04,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:04,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:04,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:05,047 INFO L124 PetriNetUnfolderBase]: 267/476 cut-off events. [2024-06-28 03:39:05,047 INFO L125 PetriNetUnfolderBase]: For 6043/6043 co-relation queries the response was YES. [2024-06-28 03:39:05,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2561 conditions, 476 events. 267/476 cut-off events. For 6043/6043 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1787 event pairs, 60 based on Foata normal form. 2/477 useless extension candidates. Maximal degree in co-relation 2517. Up to 316 conditions per place. [2024-06-28 03:39:05,050 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 58 selfloop transitions, 37 changer transitions 0/97 dead transitions. [2024-06-28 03:39:05,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 97 transitions, 1103 flow [2024-06-28 03:39:05,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:05,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-28 03:39:05,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824884792626728 [2024-06-28 03:39:05,052 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 775 flow. Second operand 7 states and 83 transitions. [2024-06-28 03:39:05,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 97 transitions, 1103 flow [2024-06-28 03:39:05,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 1053 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:05,060 INFO L231 Difference]: Finished difference. Result has 94 places, 86 transitions, 850 flow [2024-06-28 03:39:05,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=850, PETRI_PLACES=94, PETRI_TRANSITIONS=86} [2024-06-28 03:39:05,060 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-28 03:39:05,060 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 86 transitions, 850 flow [2024-06-28 03:39:05,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:05,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:05,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:05,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:39:05,061 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:05,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:05,061 INFO L85 PathProgramCache]: Analyzing trace with hash -971235778, now seen corresponding path program 3 times [2024-06-28 03:39:05,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:05,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542252827] [2024-06-28 03:39:05,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:05,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:05,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:05,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542252827] [2024-06-28 03:39:05,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542252827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:05,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:05,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:05,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465958904] [2024-06-28 03:39:05,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:05,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:05,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:05,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:05,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:05,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:05,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 86 transitions, 850 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:05,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:05,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:05,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:05,709 INFO L124 PetriNetUnfolderBase]: 263/470 cut-off events. [2024-06-28 03:39:05,710 INFO L125 PetriNetUnfolderBase]: For 6454/6454 co-relation queries the response was YES. [2024-06-28 03:39:05,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2578 conditions, 470 events. 263/470 cut-off events. For 6454/6454 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1763 event pairs, 57 based on Foata normal form. 2/471 useless extension candidates. Maximal degree in co-relation 2533. Up to 313 conditions per place. [2024-06-28 03:39:05,713 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 51 selfloop transitions, 43 changer transitions 0/96 dead transitions. [2024-06-28 03:39:05,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 96 transitions, 1100 flow [2024-06-28 03:39:05,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:05,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:05,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-28 03:39:05,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824884792626728 [2024-06-28 03:39:05,714 INFO L175 Difference]: Start difference. First operand has 94 places, 86 transitions, 850 flow. Second operand 7 states and 83 transitions. [2024-06-28 03:39:05,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 96 transitions, 1100 flow [2024-06-28 03:39:05,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 96 transitions, 1041 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:05,722 INFO L231 Difference]: Finished difference. Result has 98 places, 86 transitions, 882 flow [2024-06-28 03:39:05,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=882, PETRI_PLACES=98, PETRI_TRANSITIONS=86} [2024-06-28 03:39:05,723 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-06-28 03:39:05,723 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 86 transitions, 882 flow [2024-06-28 03:39:05,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:05,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:05,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:05,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:39:05,723 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:05,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:05,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1205821353, now seen corresponding path program 1 times [2024-06-28 03:39:05,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:05,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391656491] [2024-06-28 03:39:05,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:05,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:06,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:06,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:06,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391656491] [2024-06-28 03:39:06,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391656491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:06,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:06,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:06,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901037460] [2024-06-28 03:39:06,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:06,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:06,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:06,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:06,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:06,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:06,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 86 transitions, 882 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:06,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:06,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:06,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:06,441 INFO L124 PetriNetUnfolderBase]: 266/473 cut-off events. [2024-06-28 03:39:06,441 INFO L125 PetriNetUnfolderBase]: For 6897/6897 co-relation queries the response was YES. [2024-06-28 03:39:06,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2654 conditions, 473 events. 266/473 cut-off events. For 6897/6897 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1752 event pairs, 54 based on Foata normal form. 1/473 useless extension candidates. Maximal degree in co-relation 2608. Up to 415 conditions per place. [2024-06-28 03:39:06,444 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 69 selfloop transitions, 25 changer transitions 0/96 dead transitions. [2024-06-28 03:39:06,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 96 transitions, 1138 flow [2024-06-28 03:39:06,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:06,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:06,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 03:39:06,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 03:39:06,446 INFO L175 Difference]: Start difference. First operand has 98 places, 86 transitions, 882 flow. Second operand 8 states and 86 transitions. [2024-06-28 03:39:06,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 96 transitions, 1138 flow [2024-06-28 03:39:06,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 96 transitions, 1028 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:06,456 INFO L231 Difference]: Finished difference. Result has 100 places, 88 transitions, 841 flow [2024-06-28 03:39:06,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=841, PETRI_PLACES=100, PETRI_TRANSITIONS=88} [2024-06-28 03:39:06,456 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-28 03:39:06,456 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 88 transitions, 841 flow [2024-06-28 03:39:06,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:06,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:06,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:06,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:39:06,457 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:06,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:06,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1206088263, now seen corresponding path program 2 times [2024-06-28 03:39:06,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:06,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284021786] [2024-06-28 03:39:06,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:06,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:06,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:06,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:06,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284021786] [2024-06-28 03:39:06,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284021786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:06,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:06,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:06,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967331059] [2024-06-28 03:39:06,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:06,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:06,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:06,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:06,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:06,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:06,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 88 transitions, 841 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:06,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:06,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:06,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:07,021 INFO L124 PetriNetUnfolderBase]: 264/470 cut-off events. [2024-06-28 03:39:07,021 INFO L125 PetriNetUnfolderBase]: For 7106/7106 co-relation queries the response was YES. [2024-06-28 03:39:07,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2602 conditions, 470 events. 264/470 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1755 event pairs, 54 based on Foata normal form. 1/470 useless extension candidates. Maximal degree in co-relation 2555. Up to 413 conditions per place. [2024-06-28 03:39:07,024 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 69 selfloop transitions, 23 changer transitions 0/94 dead transitions. [2024-06-28 03:39:07,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 94 transitions, 1039 flow [2024-06-28 03:39:07,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:07,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:07,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-28 03:39:07,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:39:07,025 INFO L175 Difference]: Start difference. First operand has 100 places, 88 transitions, 841 flow. Second operand 7 states and 77 transitions. [2024-06-28 03:39:07,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 94 transitions, 1039 flow [2024-06-28 03:39:07,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 94 transitions, 983 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:07,035 INFO L231 Difference]: Finished difference. Result has 101 places, 88 transitions, 836 flow [2024-06-28 03:39:07,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=836, PETRI_PLACES=101, PETRI_TRANSITIONS=88} [2024-06-28 03:39:07,036 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-28 03:39:07,036 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 88 transitions, 836 flow [2024-06-28 03:39:07,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:07,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:07,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:07,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:39:07,037 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:07,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:07,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1205811433, now seen corresponding path program 1 times [2024-06-28 03:39:07,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:07,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505145657] [2024-06-28 03:39:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:07,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:07,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:07,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505145657] [2024-06-28 03:39:07,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505145657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:07,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:07,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:07,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446461431] [2024-06-28 03:39:07,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:07,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:07,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:07,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:07,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:07,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:07,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 88 transitions, 836 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:07,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:07,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:07,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:07,963 INFO L124 PetriNetUnfolderBase]: 265/472 cut-off events. [2024-06-28 03:39:07,964 INFO L125 PetriNetUnfolderBase]: For 7728/7728 co-relation queries the response was YES. [2024-06-28 03:39:07,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2614 conditions, 472 events. 265/472 cut-off events. For 7728/7728 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1761 event pairs, 52 based on Foata normal form. 2/473 useless extension candidates. Maximal degree in co-relation 2566. Up to 395 conditions per place. [2024-06-28 03:39:07,967 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 67 selfloop transitions, 31 changer transitions 0/100 dead transitions. [2024-06-28 03:39:07,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 100 transitions, 1116 flow [2024-06-28 03:39:07,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:07,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:07,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:39:07,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 03:39:07,968 INFO L175 Difference]: Start difference. First operand has 101 places, 88 transitions, 836 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:39:07,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 100 transitions, 1116 flow [2024-06-28 03:39:07,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 100 transitions, 1058 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:07,978 INFO L231 Difference]: Finished difference. Result has 104 places, 91 transitions, 876 flow [2024-06-28 03:39:07,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=876, PETRI_PLACES=104, PETRI_TRANSITIONS=91} [2024-06-28 03:39:07,978 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-28 03:39:07,978 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 91 transitions, 876 flow [2024-06-28 03:39:07,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:07,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:07,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:07,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:39:07,979 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:07,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:07,979 INFO L85 PathProgramCache]: Analyzing trace with hash -48301489, now seen corresponding path program 1 times [2024-06-28 03:39:07,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:07,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772015555] [2024-06-28 03:39:07,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:07,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:08,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:08,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772015555] [2024-06-28 03:39:08,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772015555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:08,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:08,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:08,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373338263] [2024-06-28 03:39:08,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:08,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:08,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:08,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:08,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:08,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:08,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 91 transitions, 876 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:08,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:08,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:08,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:08,874 INFO L124 PetriNetUnfolderBase]: 269/482 cut-off events. [2024-06-28 03:39:08,888 INFO L125 PetriNetUnfolderBase]: For 8390/8390 co-relation queries the response was YES. [2024-06-28 03:39:08,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2742 conditions, 482 events. 269/482 cut-off events. For 8390/8390 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1824 event pairs, 31 based on Foata normal form. 2/483 useless extension candidates. Maximal degree in co-relation 2693. Up to 403 conditions per place. [2024-06-28 03:39:08,892 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 84 selfloop transitions, 19 changer transitions 0/105 dead transitions. [2024-06-28 03:39:08,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 105 transitions, 1128 flow [2024-06-28 03:39:08,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:08,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:08,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-28 03:39:08,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34274193548387094 [2024-06-28 03:39:08,893 INFO L175 Difference]: Start difference. First operand has 104 places, 91 transitions, 876 flow. Second operand 8 states and 85 transitions. [2024-06-28 03:39:08,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 105 transitions, 1128 flow [2024-06-28 03:39:08,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 105 transitions, 1052 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:08,904 INFO L231 Difference]: Finished difference. Result has 105 places, 92 transitions, 858 flow [2024-06-28 03:39:08,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=858, PETRI_PLACES=105, PETRI_TRANSITIONS=92} [2024-06-28 03:39:08,904 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2024-06-28 03:39:08,905 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 92 transitions, 858 flow [2024-06-28 03:39:08,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:08,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:08,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:08,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:39:08,905 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:08,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:08,905 INFO L85 PathProgramCache]: Analyzing trace with hash -963533107, now seen corresponding path program 2 times [2024-06-28 03:39:08,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:08,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104602120] [2024-06-28 03:39:08,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:08,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:09,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:09,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104602120] [2024-06-28 03:39:09,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104602120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:09,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:09,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:09,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753975094] [2024-06-28 03:39:09,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:09,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:09,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:09,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:09,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:09,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:09,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 92 transitions, 858 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:09,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:09,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:09,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:09,996 INFO L124 PetriNetUnfolderBase]: 273/490 cut-off events. [2024-06-28 03:39:09,996 INFO L125 PetriNetUnfolderBase]: For 9214/9214 co-relation queries the response was YES. [2024-06-28 03:39:09,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2785 conditions, 490 events. 273/490 cut-off events. For 9214/9214 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1877 event pairs, 48 based on Foata normal form. 2/491 useless extension candidates. Maximal degree in co-relation 2735. Up to 423 conditions per place. [2024-06-28 03:39:09,999 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 82 selfloop transitions, 22 changer transitions 0/106 dead transitions. [2024-06-28 03:39:10,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 106 transitions, 1122 flow [2024-06-28 03:39:10,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:10,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:10,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:39:10,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-28 03:39:10,001 INFO L175 Difference]: Start difference. First operand has 105 places, 92 transitions, 858 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:39:10,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 106 transitions, 1122 flow [2024-06-28 03:39:10,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 106 transitions, 1074 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:10,012 INFO L231 Difference]: Finished difference. Result has 108 places, 93 transitions, 877 flow [2024-06-28 03:39:10,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=877, PETRI_PLACES=108, PETRI_TRANSITIONS=93} [2024-06-28 03:39:10,012 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-28 03:39:10,012 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 93 transitions, 877 flow [2024-06-28 03:39:10,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:10,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:10,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:10,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:39:10,013 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:10,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:10,013 INFO L85 PathProgramCache]: Analyzing trace with hash -960851793, now seen corresponding path program 1 times [2024-06-28 03:39:10,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:10,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212334186] [2024-06-28 03:39:10,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:10,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:10,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:10,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212334186] [2024-06-28 03:39:10,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212334186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:10,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:10,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:10,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9404925] [2024-06-28 03:39:10,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:10,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:10,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:10,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:10,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:10,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 93 transitions, 877 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:10,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:10,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:10,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:10,867 INFO L124 PetriNetUnfolderBase]: 271/485 cut-off events. [2024-06-28 03:39:10,867 INFO L125 PetriNetUnfolderBase]: For 9538/9538 co-relation queries the response was YES. [2024-06-28 03:39:10,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2772 conditions, 485 events. 271/485 cut-off events. For 9538/9538 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1838 event pairs, 48 based on Foata normal form. 1/485 useless extension candidates. Maximal degree in co-relation 2721. Up to 402 conditions per place. [2024-06-28 03:39:10,871 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 74 selfloop transitions, 27 changer transitions 0/103 dead transitions. [2024-06-28 03:39:10,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 103 transitions, 1107 flow [2024-06-28 03:39:10,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:10,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:10,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 03:39:10,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-28 03:39:10,872 INFO L175 Difference]: Start difference. First operand has 108 places, 93 transitions, 877 flow. Second operand 7 states and 78 transitions. [2024-06-28 03:39:10,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 103 transitions, 1107 flow [2024-06-28 03:39:10,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 103 transitions, 1056 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:10,883 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 890 flow [2024-06-28 03:39:10,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=890, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2024-06-28 03:39:10,883 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-28 03:39:10,884 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 890 flow [2024-06-28 03:39:10,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:10,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:10,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:10,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:39:10,884 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:10,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:10,885 INFO L85 PathProgramCache]: Analyzing trace with hash -160727061, now seen corresponding path program 1 times [2024-06-28 03:39:10,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:10,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391294731] [2024-06-28 03:39:10,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:10,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:11,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:11,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:11,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391294731] [2024-06-28 03:39:11,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391294731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:11,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:11,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:11,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943878068] [2024-06-28 03:39:11,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:11,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:11,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:11,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:11,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:11,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:11,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 890 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:11,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:11,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:11,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:11,565 INFO L124 PetriNetUnfolderBase]: 277/497 cut-off events. [2024-06-28 03:39:11,565 INFO L125 PetriNetUnfolderBase]: For 10562/10562 co-relation queries the response was YES. [2024-06-28 03:39:11,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2842 conditions, 497 events. 277/497 cut-off events. For 10562/10562 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1903 event pairs, 49 based on Foata normal form. 2/498 useless extension candidates. Maximal degree in co-relation 2790. Up to 415 conditions per place. [2024-06-28 03:39:11,574 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 82 selfloop transitions, 24 changer transitions 0/108 dead transitions. [2024-06-28 03:39:11,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 108 transitions, 1160 flow [2024-06-28 03:39:11,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:11,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:11,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 03:39:11,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-28 03:39:11,579 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 890 flow. Second operand 8 states and 87 transitions. [2024-06-28 03:39:11,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 108 transitions, 1160 flow [2024-06-28 03:39:11,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 108 transitions, 1069 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:11,610 INFO L231 Difference]: Finished difference. Result has 111 places, 95 transitions, 870 flow [2024-06-28 03:39:11,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=870, PETRI_PLACES=111, PETRI_TRANSITIONS=95} [2024-06-28 03:39:11,611 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-28 03:39:11,611 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 95 transitions, 870 flow [2024-06-28 03:39:11,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:11,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:11,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:11,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:39:11,612 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:11,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:11,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1024660835, now seen corresponding path program 2 times [2024-06-28 03:39:11,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:11,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16192519] [2024-06-28 03:39:11,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:11,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:12,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:12,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:12,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16192519] [2024-06-28 03:39:12,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16192519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:12,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:12,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:12,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490597073] [2024-06-28 03:39:12,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:12,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:12,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:12,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:12,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:12,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 95 transitions, 870 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:12,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:12,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:12,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:12,294 INFO L124 PetriNetUnfolderBase]: 293/524 cut-off events. [2024-06-28 03:39:12,295 INFO L125 PetriNetUnfolderBase]: For 11212/11212 co-relation queries the response was YES. [2024-06-28 03:39:12,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 524 events. 293/524 cut-off events. For 11212/11212 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2056 event pairs, 52 based on Foata normal form. 2/525 useless extension candidates. Maximal degree in co-relation 2940. Up to 309 conditions per place. [2024-06-28 03:39:12,298 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 59 selfloop transitions, 53 changer transitions 0/114 dead transitions. [2024-06-28 03:39:12,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 114 transitions, 1280 flow [2024-06-28 03:39:12,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:12,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:12,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 03:39:12,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:39:12,299 INFO L175 Difference]: Start difference. First operand has 111 places, 95 transitions, 870 flow. Second operand 8 states and 96 transitions. [2024-06-28 03:39:12,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 114 transitions, 1280 flow [2024-06-28 03:39:12,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 114 transitions, 1225 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:12,311 INFO L231 Difference]: Finished difference. Result has 113 places, 101 transitions, 984 flow [2024-06-28 03:39:12,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=984, PETRI_PLACES=113, PETRI_TRANSITIONS=101} [2024-06-28 03:39:12,312 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-28 03:39:12,312 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 101 transitions, 984 flow [2024-06-28 03:39:12,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:12,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:12,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:12,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:39:12,312 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:12,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:12,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1024667345, now seen corresponding path program 3 times [2024-06-28 03:39:12,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:12,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24888335] [2024-06-28 03:39:12,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:12,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:12,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:12,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:12,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24888335] [2024-06-28 03:39:12,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24888335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:12,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:12,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:12,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560648054] [2024-06-28 03:39:12,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:12,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:12,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:12,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:12,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:12,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:12,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 101 transitions, 984 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:12,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:12,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:12,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:12,996 INFO L124 PetriNetUnfolderBase]: 299/534 cut-off events. [2024-06-28 03:39:12,996 INFO L125 PetriNetUnfolderBase]: For 12187/12187 co-relation queries the response was YES. [2024-06-28 03:39:12,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3166 conditions, 534 events. 299/534 cut-off events. For 12187/12187 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2103 event pairs, 55 based on Foata normal form. 2/535 useless extension candidates. Maximal degree in co-relation 3112. Up to 315 conditions per place. [2024-06-28 03:39:12,999 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 62 selfloop transitions, 52 changer transitions 0/116 dead transitions. [2024-06-28 03:39:12,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 116 transitions, 1370 flow [2024-06-28 03:39:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:13,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:13,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 03:39:13,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:39:13,002 INFO L175 Difference]: Start difference. First operand has 113 places, 101 transitions, 984 flow. Second operand 8 states and 96 transitions. [2024-06-28 03:39:13,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 116 transitions, 1370 flow [2024-06-28 03:39:13,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 116 transitions, 1314 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:13,019 INFO L231 Difference]: Finished difference. Result has 118 places, 103 transitions, 1059 flow [2024-06-28 03:39:13,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1059, PETRI_PLACES=118, PETRI_TRANSITIONS=103} [2024-06-28 03:39:13,023 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-28 03:39:13,024 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 103 transitions, 1059 flow [2024-06-28 03:39:13,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:13,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:13,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:13,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:39:13,025 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:13,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:13,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1024845285, now seen corresponding path program 3 times [2024-06-28 03:39:13,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:13,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539335617] [2024-06-28 03:39:13,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:13,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:13,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:13,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539335617] [2024-06-28 03:39:13,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539335617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:13,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:13,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:13,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60562310] [2024-06-28 03:39:13,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:13,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:13,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:13,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:13,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:13,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:13,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 103 transitions, 1059 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:13,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:13,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:13,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:13,891 INFO L124 PetriNetUnfolderBase]: 303/541 cut-off events. [2024-06-28 03:39:13,908 INFO L125 PetriNetUnfolderBase]: For 13263/13263 co-relation queries the response was YES. [2024-06-28 03:39:13,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3327 conditions, 541 events. 303/541 cut-off events. For 13263/13263 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2123 event pairs, 47 based on Foata normal form. 2/542 useless extension candidates. Maximal degree in co-relation 3271. Up to 447 conditions per place. [2024-06-28 03:39:13,912 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 83 selfloop transitions, 31 changer transitions 0/116 dead transitions. [2024-06-28 03:39:13,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 116 transitions, 1337 flow [2024-06-28 03:39:13,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:13,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:13,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 03:39:13,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-28 03:39:13,929 INFO L175 Difference]: Start difference. First operand has 118 places, 103 transitions, 1059 flow. Second operand 8 states and 87 transitions. [2024-06-28 03:39:13,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 116 transitions, 1337 flow [2024-06-28 03:39:13,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 116 transitions, 1249 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:13,945 INFO L231 Difference]: Finished difference. Result has 121 places, 104 transitions, 1058 flow [2024-06-28 03:39:13,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1058, PETRI_PLACES=121, PETRI_TRANSITIONS=104} [2024-06-28 03:39:13,947 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 91 predicate places. [2024-06-28 03:39:13,947 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 104 transitions, 1058 flow [2024-06-28 03:39:13,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:13,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:13,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:13,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:39:13,947 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:13,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:13,948 INFO L85 PathProgramCache]: Analyzing trace with hash -140659539, now seen corresponding path program 4 times [2024-06-28 03:39:13,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:13,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810046813] [2024-06-28 03:39:13,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:13,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:14,418 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 03:39:14,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:14,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810046813] [2024-06-28 03:39:14,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810046813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:14,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:14,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:14,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652437219] [2024-06-28 03:39:14,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:14,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:14,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:14,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:14,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:14,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:14,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 104 transitions, 1058 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:14,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:14,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:14,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:14,613 INFO L124 PetriNetUnfolderBase]: 304/543 cut-off events. [2024-06-28 03:39:14,614 INFO L125 PetriNetUnfolderBase]: For 13825/13825 co-relation queries the response was YES. [2024-06-28 03:39:14,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3316 conditions, 543 events. 304/543 cut-off events. For 13825/13825 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2159 event pairs, 59 based on Foata normal form. 2/544 useless extension candidates. Maximal degree in co-relation 3259. Up to 326 conditions per place. [2024-06-28 03:39:14,617 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 68 selfloop transitions, 49 changer transitions 0/119 dead transitions. [2024-06-28 03:39:14,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 119 transitions, 1456 flow [2024-06-28 03:39:14,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:14,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:14,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 03:39:14,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 03:39:14,618 INFO L175 Difference]: Start difference. First operand has 121 places, 104 transitions, 1058 flow. Second operand 8 states and 94 transitions. [2024-06-28 03:39:14,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 119 transitions, 1456 flow [2024-06-28 03:39:14,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 119 transitions, 1381 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:14,635 INFO L231 Difference]: Finished difference. Result has 123 places, 106 transitions, 1106 flow [2024-06-28 03:39:14,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1106, PETRI_PLACES=123, PETRI_TRANSITIONS=106} [2024-06-28 03:39:14,635 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-28 03:39:14,635 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 106 transitions, 1106 flow [2024-06-28 03:39:14,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:14,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:14,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:14,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:39:14,636 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:14,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:14,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1715965619, now seen corresponding path program 4 times [2024-06-28 03:39:14,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:14,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744190449] [2024-06-28 03:39:14,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:14,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:15,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:15,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:15,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744190449] [2024-06-28 03:39:15,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744190449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:15,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:15,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:15,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395649678] [2024-06-28 03:39:15,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:15,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:15,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:15,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:15,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:15,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:15,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 106 transitions, 1106 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:15,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:15,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:15,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:15,597 INFO L124 PetriNetUnfolderBase]: 312/560 cut-off events. [2024-06-28 03:39:15,597 INFO L125 PetriNetUnfolderBase]: For 15646/15646 co-relation queries the response was YES. [2024-06-28 03:39:15,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3457 conditions, 560 events. 312/560 cut-off events. For 15646/15646 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2259 event pairs, 58 based on Foata normal form. 4/563 useless extension candidates. Maximal degree in co-relation 3399. Up to 391 conditions per place. [2024-06-28 03:39:15,600 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 79 selfloop transitions, 37 changer transitions 0/118 dead transitions. [2024-06-28 03:39:15,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 118 transitions, 1390 flow [2024-06-28 03:39:15,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:15,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:15,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 03:39:15,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 03:39:15,601 INFO L175 Difference]: Start difference. First operand has 123 places, 106 transitions, 1106 flow. Second operand 8 states and 90 transitions. [2024-06-28 03:39:15,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 118 transitions, 1390 flow [2024-06-28 03:39:15,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 118 transitions, 1330 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:15,619 INFO L231 Difference]: Finished difference. Result has 127 places, 108 transitions, 1155 flow [2024-06-28 03:39:15,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1155, PETRI_PLACES=127, PETRI_TRANSITIONS=108} [2024-06-28 03:39:15,620 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-28 03:39:15,620 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 108 transitions, 1155 flow [2024-06-28 03:39:15,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:15,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:15,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:15,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:39:15,621 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:15,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:15,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1479308891, now seen corresponding path program 1 times [2024-06-28 03:39:15,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:15,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669722842] [2024-06-28 03:39:15,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:15,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:16,206 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 03:39:16,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:16,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669722842] [2024-06-28 03:39:16,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669722842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:16,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:16,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:16,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768968923] [2024-06-28 03:39:16,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:16,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:16,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:16,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:16,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:16,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:16,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 108 transitions, 1155 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:16,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:16,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:16,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:16,514 INFO L124 PetriNetUnfolderBase]: 315/563 cut-off events. [2024-06-28 03:39:16,515 INFO L125 PetriNetUnfolderBase]: For 15410/15410 co-relation queries the response was YES. [2024-06-28 03:39:16,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3508 conditions, 563 events. 315/563 cut-off events. For 15410/15410 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2268 event pairs, 55 based on Foata normal form. 1/563 useless extension candidates. Maximal degree in co-relation 3449. Up to 490 conditions per place. [2024-06-28 03:39:16,518 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 85 selfloop transitions, 32 changer transitions 0/119 dead transitions. [2024-06-28 03:39:16,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 119 transitions, 1481 flow [2024-06-28 03:39:16,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:16,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:16,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 03:39:16,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-28 03:39:16,519 INFO L175 Difference]: Start difference. First operand has 127 places, 108 transitions, 1155 flow. Second operand 10 states and 103 transitions. [2024-06-28 03:39:16,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 119 transitions, 1481 flow [2024-06-28 03:39:16,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 119 transitions, 1388 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:16,540 INFO L231 Difference]: Finished difference. Result has 131 places, 110 transitions, 1145 flow [2024-06-28 03:39:16,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1145, PETRI_PLACES=131, PETRI_TRANSITIONS=110} [2024-06-28 03:39:16,541 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-28 03:39:16,541 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 110 transitions, 1145 flow [2024-06-28 03:39:16,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:16,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:16,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:16,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:39:16,541 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:16,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:16,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1479605561, now seen corresponding path program 2 times [2024-06-28 03:39:16,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:16,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533742792] [2024-06-28 03:39:16,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:16,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:17,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:17,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:17,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533742792] [2024-06-28 03:39:17,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533742792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:17,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:17,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:17,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110953583] [2024-06-28 03:39:17,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:17,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:17,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:17,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:17,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:17,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:17,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 110 transitions, 1145 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:17,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:17,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:17,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:17,407 INFO L124 PetriNetUnfolderBase]: 318/568 cut-off events. [2024-06-28 03:39:17,408 INFO L125 PetriNetUnfolderBase]: For 16043/16043 co-relation queries the response was YES. [2024-06-28 03:39:17,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3506 conditions, 568 events. 318/568 cut-off events. For 16043/16043 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2298 event pairs, 55 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 3446. Up to 494 conditions per place. [2024-06-28 03:39:17,412 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 87 selfloop transitions, 32 changer transitions 0/121 dead transitions. [2024-06-28 03:39:17,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 121 transitions, 1481 flow [2024-06-28 03:39:17,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:17,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:17,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:39:17,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 03:39:17,414 INFO L175 Difference]: Start difference. First operand has 131 places, 110 transitions, 1145 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:39:17,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 121 transitions, 1481 flow [2024-06-28 03:39:17,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 121 transitions, 1407 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:17,438 INFO L231 Difference]: Finished difference. Result has 132 places, 112 transitions, 1158 flow [2024-06-28 03:39:17,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1158, PETRI_PLACES=132, PETRI_TRANSITIONS=112} [2024-06-28 03:39:17,439 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-28 03:39:17,439 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 112 transitions, 1158 flow [2024-06-28 03:39:17,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:17,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:17,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:17,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:39:17,440 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:17,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:17,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1274244761, now seen corresponding path program 5 times [2024-06-28 03:39:17,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:17,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315488298] [2024-06-28 03:39:17,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:17,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:18,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:18,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:18,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315488298] [2024-06-28 03:39:18,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315488298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:18,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:18,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:18,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980314419] [2024-06-28 03:39:18,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:18,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:18,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:18,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:18,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:18,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:18,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 112 transitions, 1158 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:18,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:18,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:18,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:18,351 INFO L124 PetriNetUnfolderBase]: 324/580 cut-off events. [2024-06-28 03:39:18,364 INFO L125 PetriNetUnfolderBase]: For 17619/17619 co-relation queries the response was YES. [2024-06-28 03:39:18,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3576 conditions, 580 events. 324/580 cut-off events. For 17619/17619 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2373 event pairs, 52 based on Foata normal form. 2/581 useless extension candidates. Maximal degree in co-relation 3515. Up to 358 conditions per place. [2024-06-28 03:39:18,368 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 65 selfloop transitions, 62 changer transitions 0/129 dead transitions. [2024-06-28 03:39:18,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 129 transitions, 1601 flow [2024-06-28 03:39:18,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:18,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:18,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 03:39:18,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 03:39:18,369 INFO L175 Difference]: Start difference. First operand has 132 places, 112 transitions, 1158 flow. Second operand 10 states and 113 transitions. [2024-06-28 03:39:18,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 129 transitions, 1601 flow [2024-06-28 03:39:18,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 129 transitions, 1530 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:18,415 INFO L231 Difference]: Finished difference. Result has 135 places, 114 transitions, 1238 flow [2024-06-28 03:39:18,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1238, PETRI_PLACES=135, PETRI_TRANSITIONS=114} [2024-06-28 03:39:18,415 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-28 03:39:18,416 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 114 transitions, 1238 flow [2024-06-28 03:39:18,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:18,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:18,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:18,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:39:18,417 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:18,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:18,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1487886529, now seen corresponding path program 6 times [2024-06-28 03:39:18,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:18,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784540904] [2024-06-28 03:39:18,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:18,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:18,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:18,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:18,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784540904] [2024-06-28 03:39:18,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784540904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:18,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:18,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:18,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390750120] [2024-06-28 03:39:18,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:18,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:18,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:18,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:18,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:18,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:18,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 114 transitions, 1238 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:18,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:18,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:18,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:19,095 INFO L124 PetriNetUnfolderBase]: 330/590 cut-off events. [2024-06-28 03:39:19,095 INFO L125 PetriNetUnfolderBase]: For 18946/18946 co-relation queries the response was YES. [2024-06-28 03:39:19,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3745 conditions, 590 events. 330/590 cut-off events. For 18946/18946 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2423 event pairs, 62 based on Foata normal form. 2/591 useless extension candidates. Maximal degree in co-relation 3683. Up to 364 conditions per place. [2024-06-28 03:39:19,117 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 75 selfloop transitions, 51 changer transitions 0/128 dead transitions. [2024-06-28 03:39:19,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 128 transitions, 1676 flow [2024-06-28 03:39:19,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:19,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-28 03:39:19,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-28 03:39:19,123 INFO L175 Difference]: Start difference. First operand has 135 places, 114 transitions, 1238 flow. Second operand 8 states and 95 transitions. [2024-06-28 03:39:19,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 128 transitions, 1676 flow [2024-06-28 03:39:19,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 128 transitions, 1535 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:19,181 INFO L231 Difference]: Finished difference. Result has 135 places, 116 transitions, 1230 flow [2024-06-28 03:39:19,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1230, PETRI_PLACES=135, PETRI_TRANSITIONS=116} [2024-06-28 03:39:19,182 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-28 03:39:19,182 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 116 transitions, 1230 flow [2024-06-28 03:39:19,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:19,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:19,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:19,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:39:19,183 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:19,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:19,183 INFO L85 PathProgramCache]: Analyzing trace with hash 108205065, now seen corresponding path program 3 times [2024-06-28 03:39:19,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:19,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50353872] [2024-06-28 03:39:19,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:19,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:19,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:19,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:19,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50353872] [2024-06-28 03:39:19,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50353872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:19,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:19,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:19,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48642662] [2024-06-28 03:39:19,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:19,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:19,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:19,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:19,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:19,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:19,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 116 transitions, 1230 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:19,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:19,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:19,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:19,889 INFO L124 PetriNetUnfolderBase]: 328/585 cut-off events. [2024-06-28 03:39:19,889 INFO L125 PetriNetUnfolderBase]: For 18786/18786 co-relation queries the response was YES. [2024-06-28 03:39:19,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3687 conditions, 585 events. 328/585 cut-off events. For 18786/18786 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2395 event pairs, 57 based on Foata normal form. 1/585 useless extension candidates. Maximal degree in co-relation 3624. Up to 512 conditions per place. [2024-06-28 03:39:19,893 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 91 selfloop transitions, 30 changer transitions 0/123 dead transitions. [2024-06-28 03:39:19,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 123 transitions, 1488 flow [2024-06-28 03:39:19,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:19,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:19,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 03:39:19,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-28 03:39:19,895 INFO L175 Difference]: Start difference. First operand has 135 places, 116 transitions, 1230 flow. Second operand 8 states and 87 transitions. [2024-06-28 03:39:19,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 123 transitions, 1488 flow [2024-06-28 03:39:19,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 123 transitions, 1359 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:19,922 INFO L231 Difference]: Finished difference. Result has 137 places, 116 transitions, 1166 flow [2024-06-28 03:39:19,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1166, PETRI_PLACES=137, PETRI_TRANSITIONS=116} [2024-06-28 03:39:19,922 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-28 03:39:19,922 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 116 transitions, 1166 flow [2024-06-28 03:39:19,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:19,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:19,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:19,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:39:19,923 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:19,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:19,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1265970551, now seen corresponding path program 7 times [2024-06-28 03:39:19,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:19,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777995270] [2024-06-28 03:39:19,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:19,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:20,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:20,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777995270] [2024-06-28 03:39:20,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777995270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:20,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:20,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:20,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509571828] [2024-06-28 03:39:20,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:20,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:20,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:20,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:20,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:20,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:20,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 116 transitions, 1166 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:20,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:20,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:20,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:20,607 INFO L124 PetriNetUnfolderBase]: 324/581 cut-off events. [2024-06-28 03:39:20,607 INFO L125 PetriNetUnfolderBase]: For 18948/18948 co-relation queries the response was YES. [2024-06-28 03:39:20,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3544 conditions, 581 events. 324/581 cut-off events. For 18948/18948 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2387 event pairs, 61 based on Foata normal form. 2/582 useless extension candidates. Maximal degree in co-relation 3480. Up to 358 conditions per place. [2024-06-28 03:39:20,611 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 76 selfloop transitions, 50 changer transitions 0/128 dead transitions. [2024-06-28 03:39:20,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 128 transitions, 1520 flow [2024-06-28 03:39:20,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:20,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:20,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-28 03:39:20,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-28 03:39:20,613 INFO L175 Difference]: Start difference. First operand has 137 places, 116 transitions, 1166 flow. Second operand 8 states and 95 transitions. [2024-06-28 03:39:20,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 128 transitions, 1520 flow [2024-06-28 03:39:20,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 128 transitions, 1437 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:20,641 INFO L231 Difference]: Finished difference. Result has 138 places, 116 transitions, 1188 flow [2024-06-28 03:39:20,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1188, PETRI_PLACES=138, PETRI_TRANSITIONS=116} [2024-06-28 03:39:20,642 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-28 03:39:20,642 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 116 transitions, 1188 flow [2024-06-28 03:39:20,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:20,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:20,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:20,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:39:20,643 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:20,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:20,643 INFO L85 PathProgramCache]: Analyzing trace with hash -2114615947, now seen corresponding path program 5 times [2024-06-28 03:39:20,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:20,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768837449] [2024-06-28 03:39:20,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:20,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:21,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:21,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768837449] [2024-06-28 03:39:21,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768837449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:21,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:21,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:21,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337100214] [2024-06-28 03:39:21,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:21,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:21,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:21,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:21,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:21,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:21,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 116 transitions, 1188 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:21,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:21,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:21,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:21,503 INFO L124 PetriNetUnfolderBase]: 345/617 cut-off events. [2024-06-28 03:39:21,504 INFO L125 PetriNetUnfolderBase]: For 20341/20341 co-relation queries the response was YES. [2024-06-28 03:39:21,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3862 conditions, 617 events. 345/617 cut-off events. For 20341/20341 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2582 event pairs, 52 based on Foata normal form. 2/618 useless extension candidates. Maximal degree in co-relation 3797. Up to 543 conditions per place. [2024-06-28 03:39:21,510 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 112 selfloop transitions, 26 changer transitions 0/140 dead transitions. [2024-06-28 03:39:21,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 140 transitions, 1636 flow [2024-06-28 03:39:21,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:21,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:21,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:39:21,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 03:39:21,512 INFO L175 Difference]: Start difference. First operand has 138 places, 116 transitions, 1188 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:39:21,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 140 transitions, 1636 flow [2024-06-28 03:39:21,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 140 transitions, 1480 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:21,544 INFO L231 Difference]: Finished difference. Result has 140 places, 124 transitions, 1232 flow [2024-06-28 03:39:21,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1232, PETRI_PLACES=140, PETRI_TRANSITIONS=124} [2024-06-28 03:39:21,544 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-28 03:39:21,544 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 124 transitions, 1232 flow [2024-06-28 03:39:21,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:21,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:21,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:21,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:39:21,545 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:21,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:21,545 INFO L85 PathProgramCache]: Analyzing trace with hash 312649003, now seen corresponding path program 6 times [2024-06-28 03:39:21,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:21,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392419440] [2024-06-28 03:39:21,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:21,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:22,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:22,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392419440] [2024-06-28 03:39:22,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392419440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:22,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:22,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:22,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130871523] [2024-06-28 03:39:22,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:22,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:22,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:22,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:22,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:22,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:22,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 124 transitions, 1232 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:22,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:22,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:22,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:22,421 INFO L124 PetriNetUnfolderBase]: 342/612 cut-off events. [2024-06-28 03:39:22,421 INFO L125 PetriNetUnfolderBase]: For 19915/19915 co-relation queries the response was YES. [2024-06-28 03:39:22,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3715 conditions, 612 events. 342/612 cut-off events. For 19915/19915 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2551 event pairs, 51 based on Foata normal form. 2/613 useless extension candidates. Maximal degree in co-relation 3648. Up to 538 conditions per place. [2024-06-28 03:39:22,426 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 113 selfloop transitions, 25 changer transitions 0/140 dead transitions. [2024-06-28 03:39:22,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 140 transitions, 1556 flow [2024-06-28 03:39:22,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:22,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:39:22,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 03:39:22,456 INFO L175 Difference]: Start difference. First operand has 140 places, 124 transitions, 1232 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:39:22,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 140 transitions, 1556 flow [2024-06-28 03:39:22,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 140 transitions, 1489 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:22,491 INFO L231 Difference]: Finished difference. Result has 143 places, 124 transitions, 1220 flow [2024-06-28 03:39:22,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1220, PETRI_PLACES=143, PETRI_TRANSITIONS=124} [2024-06-28 03:39:22,493 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-28 03:39:22,494 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 124 transitions, 1220 flow [2024-06-28 03:39:22,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:22,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:22,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:22,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:39:22,494 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:22,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:22,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1274552591, now seen corresponding path program 1 times [2024-06-28 03:39:22,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:22,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046119349] [2024-06-28 03:39:22,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:22,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:23,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:23,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046119349] [2024-06-28 03:39:23,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046119349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:23,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:23,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:23,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851724385] [2024-06-28 03:39:23,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:23,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:23,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:23,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:23,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:23,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:23,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 124 transitions, 1220 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:23,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:23,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:23,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:23,502 INFO L124 PetriNetUnfolderBase]: 380/695 cut-off events. [2024-06-28 03:39:23,502 INFO L125 PetriNetUnfolderBase]: For 30550/30550 co-relation queries the response was YES. [2024-06-28 03:39:23,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3980 conditions, 695 events. 380/695 cut-off events. For 30550/30550 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3021 event pairs, 60 based on Foata normal form. 16/710 useless extension candidates. Maximal degree in co-relation 3913. Up to 295 conditions per place. [2024-06-28 03:39:23,506 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 73 selfloop transitions, 78 changer transitions 0/153 dead transitions. [2024-06-28 03:39:23,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 153 transitions, 1882 flow [2024-06-28 03:39:23,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:23,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:23,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 03:39:23,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:39:23,508 INFO L175 Difference]: Start difference. First operand has 143 places, 124 transitions, 1220 flow. Second operand 10 states and 124 transitions. [2024-06-28 03:39:23,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 153 transitions, 1882 flow [2024-06-28 03:39:23,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 153 transitions, 1735 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-28 03:39:23,538 INFO L231 Difference]: Finished difference. Result has 143 places, 132 transitions, 1335 flow [2024-06-28 03:39:23,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1335, PETRI_PLACES=143, PETRI_TRANSITIONS=132} [2024-06-28 03:39:23,538 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-28 03:39:23,538 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 132 transitions, 1335 flow [2024-06-28 03:39:23,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:23,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:23,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:23,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:39:23,539 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:23,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:23,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1854626821, now seen corresponding path program 1 times [2024-06-28 03:39:23,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:23,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890875706] [2024-06-28 03:39:23,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:23,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:24,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:24,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:24,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890875706] [2024-06-28 03:39:24,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890875706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:24,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:24,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:24,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659665150] [2024-06-28 03:39:24,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:24,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:24,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:24,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:24,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:24,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:24,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 132 transitions, 1335 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:24,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:24,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:24,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:24,396 INFO L124 PetriNetUnfolderBase]: 384/703 cut-off events. [2024-06-28 03:39:24,397 INFO L125 PetriNetUnfolderBase]: For 22819/22819 co-relation queries the response was YES. [2024-06-28 03:39:24,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4150 conditions, 703 events. 384/703 cut-off events. For 22819/22819 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3099 event pairs, 53 based on Foata normal form. 2/704 useless extension candidates. Maximal degree in co-relation 4084. Up to 605 conditions per place. [2024-06-28 03:39:24,401 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 122 selfloop transitions, 21 changer transitions 0/145 dead transitions. [2024-06-28 03:39:24,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 145 transitions, 1657 flow [2024-06-28 03:39:24,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:24,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:24,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-28 03:39:24,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346774193548387 [2024-06-28 03:39:24,422 INFO L175 Difference]: Start difference. First operand has 143 places, 132 transitions, 1335 flow. Second operand 8 states and 83 transitions. [2024-06-28 03:39:24,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 145 transitions, 1657 flow [2024-06-28 03:39:24,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 145 transitions, 1531 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:24,458 INFO L231 Difference]: Finished difference. Result has 146 places, 133 transitions, 1265 flow [2024-06-28 03:39:24,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1265, PETRI_PLACES=146, PETRI_TRANSITIONS=133} [2024-06-28 03:39:24,459 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-28 03:39:24,459 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 133 transitions, 1265 flow [2024-06-28 03:39:24,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:24,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:24,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:24,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:39:24,459 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:24,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:24,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1847534607, now seen corresponding path program 2 times [2024-06-28 03:39:24,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:24,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284250342] [2024-06-28 03:39:24,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:24,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:25,054 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 03:39:25,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:25,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284250342] [2024-06-28 03:39:25,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284250342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:25,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:25,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:25,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823846680] [2024-06-28 03:39:25,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:25,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:25,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:25,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:25,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:25,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:25,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 133 transitions, 1265 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:25,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:25,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:25,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:25,309 INFO L124 PetriNetUnfolderBase]: 395/724 cut-off events. [2024-06-28 03:39:25,309 INFO L125 PetriNetUnfolderBase]: For 25147/25147 co-relation queries the response was YES. [2024-06-28 03:39:25,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4190 conditions, 724 events. 395/724 cut-off events. For 25147/25147 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3246 event pairs, 64 based on Foata normal form. 2/725 useless extension candidates. Maximal degree in co-relation 4123. Up to 565 conditions per place. [2024-06-28 03:39:25,314 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 113 selfloop transitions, 33 changer transitions 0/148 dead transitions. [2024-06-28 03:39:25,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 148 transitions, 1689 flow [2024-06-28 03:39:25,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:25,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 03:39:25,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:39:25,315 INFO L175 Difference]: Start difference. First operand has 146 places, 133 transitions, 1265 flow. Second operand 8 states and 88 transitions. [2024-06-28 03:39:25,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 148 transitions, 1689 flow [2024-06-28 03:39:25,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 148 transitions, 1643 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:25,355 INFO L231 Difference]: Finished difference. Result has 148 places, 135 transitions, 1313 flow [2024-06-28 03:39:25,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1313, PETRI_PLACES=148, PETRI_TRANSITIONS=135} [2024-06-28 03:39:25,355 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-28 03:39:25,355 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 135 transitions, 1313 flow [2024-06-28 03:39:25,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:25,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:25,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:25,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:39:25,358 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:25,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:25,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1852748996, now seen corresponding path program 1 times [2024-06-28 03:39:25,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:25,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098928825] [2024-06-28 03:39:25,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:25,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:25,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:25,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:25,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098928825] [2024-06-28 03:39:25,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098928825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:25,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:25,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:25,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257537870] [2024-06-28 03:39:25,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:25,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:25,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:25,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:25,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:26,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:26,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 135 transitions, 1313 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:26,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:26,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:26,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:26,266 INFO L124 PetriNetUnfolderBase]: 393/721 cut-off events. [2024-06-28 03:39:26,267 INFO L125 PetriNetUnfolderBase]: For 24885/24885 co-relation queries the response was YES. [2024-06-28 03:39:26,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4197 conditions, 721 events. 393/721 cut-off events. For 24885/24885 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3230 event pairs, 64 based on Foata normal form. 1/721 useless extension candidates. Maximal degree in co-relation 4129. Up to 602 conditions per place. [2024-06-28 03:39:26,270 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 107 selfloop transitions, 38 changer transitions 0/147 dead transitions. [2024-06-28 03:39:26,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 147 transitions, 1637 flow [2024-06-28 03:39:26,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:26,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:26,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 03:39:26,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-28 03:39:26,271 INFO L175 Difference]: Start difference. First operand has 148 places, 135 transitions, 1313 flow. Second operand 8 states and 87 transitions. [2024-06-28 03:39:26,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 147 transitions, 1637 flow [2024-06-28 03:39:26,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 147 transitions, 1583 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:26,311 INFO L231 Difference]: Finished difference. Result has 152 places, 135 transitions, 1343 flow [2024-06-28 03:39:26,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1343, PETRI_PLACES=152, PETRI_TRANSITIONS=135} [2024-06-28 03:39:26,317 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-28 03:39:26,317 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 135 transitions, 1343 flow [2024-06-28 03:39:26,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:26,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:26,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:26,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:39:26,321 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:26,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:26,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1852749151, now seen corresponding path program 3 times [2024-06-28 03:39:26,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:26,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880176839] [2024-06-28 03:39:26,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:26,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:27,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:27,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880176839] [2024-06-28 03:39:27,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880176839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:27,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:27,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:27,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062580880] [2024-06-28 03:39:27,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:27,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:27,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:27,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:27,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:27,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:27,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 135 transitions, 1343 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:27,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:27,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:27,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:27,396 INFO L124 PetriNetUnfolderBase]: 390/716 cut-off events. [2024-06-28 03:39:27,397 INFO L125 PetriNetUnfolderBase]: For 25045/25045 co-relation queries the response was YES. [2024-06-28 03:39:27,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4171 conditions, 716 events. 390/716 cut-off events. For 25045/25045 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3197 event pairs, 63 based on Foata normal form. 2/717 useless extension candidates. Maximal degree in co-relation 4101. Up to 600 conditions per place. [2024-06-28 03:39:27,401 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 110 selfloop transitions, 35 changer transitions 0/147 dead transitions. [2024-06-28 03:39:27,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 147 transitions, 1665 flow [2024-06-28 03:39:27,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:27,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:27,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 03:39:27,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 03:39:27,403 INFO L175 Difference]: Start difference. First operand has 152 places, 135 transitions, 1343 flow. Second operand 8 states and 86 transitions. [2024-06-28 03:39:27,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 147 transitions, 1665 flow [2024-06-28 03:39:27,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 147 transitions, 1515 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:39:27,445 INFO L231 Difference]: Finished difference. Result has 151 places, 135 transitions, 1268 flow [2024-06-28 03:39:27,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1268, PETRI_PLACES=151, PETRI_TRANSITIONS=135} [2024-06-28 03:39:27,445 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-28 03:39:27,445 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 135 transitions, 1268 flow [2024-06-28 03:39:27,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:27,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:27,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:27,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:39:27,446 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:27,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:27,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1765907239, now seen corresponding path program 1 times [2024-06-28 03:39:27,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:27,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723793999] [2024-06-28 03:39:27,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:27,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:27,914 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 03:39:27,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:27,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723793999] [2024-06-28 03:39:27,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723793999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:27,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:27,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:27,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84039069] [2024-06-28 03:39:27,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:27,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:27,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:27,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:27,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:27,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:27,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 135 transitions, 1268 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:27,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:27,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:27,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:28,158 INFO L124 PetriNetUnfolderBase]: 396/726 cut-off events. [2024-06-28 03:39:28,158 INFO L125 PetriNetUnfolderBase]: For 25982/25982 co-relation queries the response was YES. [2024-06-28 03:39:28,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4155 conditions, 726 events. 396/726 cut-off events. For 25982/25982 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3269 event pairs, 64 based on Foata normal form. 2/727 useless extension candidates. Maximal degree in co-relation 4084. Up to 618 conditions per place. [2024-06-28 03:39:28,163 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 119 selfloop transitions, 30 changer transitions 1/152 dead transitions. [2024-06-28 03:39:28,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 152 transitions, 1634 flow [2024-06-28 03:39:28,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:28,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:39:28,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:39:28,164 INFO L175 Difference]: Start difference. First operand has 151 places, 135 transitions, 1268 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:39:28,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 152 transitions, 1634 flow [2024-06-28 03:39:28,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 152 transitions, 1555 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:28,210 INFO L231 Difference]: Finished difference. Result has 153 places, 136 transitions, 1267 flow [2024-06-28 03:39:28,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1267, PETRI_PLACES=153, PETRI_TRANSITIONS=136} [2024-06-28 03:39:28,213 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-28 03:39:28,214 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 136 transitions, 1267 flow [2024-06-28 03:39:28,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:28,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:28,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:28,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:39:28,216 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:28,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:28,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1699706085, now seen corresponding path program 2 times [2024-06-28 03:39:28,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:28,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446606726] [2024-06-28 03:39:28,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:28,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:28,727 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 03:39:28,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:28,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446606726] [2024-06-28 03:39:28,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446606726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:28,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:28,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:28,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294391519] [2024-06-28 03:39:28,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:28,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:28,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:28,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:28,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:28,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:28,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 136 transitions, 1267 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:28,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:28,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:28,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:28,979 INFO L124 PetriNetUnfolderBase]: 404/742 cut-off events. [2024-06-28 03:39:28,980 INFO L125 PetriNetUnfolderBase]: For 29300/29300 co-relation queries the response was YES. [2024-06-28 03:39:28,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4249 conditions, 742 events. 404/742 cut-off events. For 29300/29300 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3350 event pairs, 69 based on Foata normal form. 4/745 useless extension candidates. Maximal degree in co-relation 4177. Up to 370 conditions per place. [2024-06-28 03:39:28,984 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 78 selfloop transitions, 77 changer transitions 1/158 dead transitions. [2024-06-28 03:39:28,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 158 transitions, 1872 flow [2024-06-28 03:39:28,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:28,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:28,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 03:39:28,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 03:39:28,985 INFO L175 Difference]: Start difference. First operand has 153 places, 136 transitions, 1267 flow. Second operand 9 states and 111 transitions. [2024-06-28 03:39:28,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 158 transitions, 1872 flow [2024-06-28 03:39:29,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 158 transitions, 1808 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:29,030 INFO L231 Difference]: Finished difference. Result has 155 places, 141 transitions, 1422 flow [2024-06-28 03:39:29,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1422, PETRI_PLACES=155, PETRI_TRANSITIONS=141} [2024-06-28 03:39:29,030 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-28 03:39:29,030 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 141 transitions, 1422 flow [2024-06-28 03:39:29,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:29,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:29,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:29,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:39:29,031 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:29,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:29,031 INFO L85 PathProgramCache]: Analyzing trace with hash -400299313, now seen corresponding path program 3 times [2024-06-28 03:39:29,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:29,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107207730] [2024-06-28 03:39:29,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:29,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:29,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:29,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107207730] [2024-06-28 03:39:29,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107207730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:29,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:29,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:29,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501905826] [2024-06-28 03:39:29,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:29,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:29,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:29,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:29,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:29,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:29,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 141 transitions, 1422 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:29,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:29,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:29,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:29,788 INFO L124 PetriNetUnfolderBase]: 406/748 cut-off events. [2024-06-28 03:39:29,788 INFO L125 PetriNetUnfolderBase]: For 28819/28819 co-relation queries the response was YES. [2024-06-28 03:39:29,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4459 conditions, 748 events. 406/748 cut-off events. For 28819/28819 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3410 event pairs, 71 based on Foata normal form. 2/749 useless extension candidates. Maximal degree in co-relation 4386. Up to 372 conditions per place. [2024-06-28 03:39:29,793 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 82 selfloop transitions, 74 changer transitions 1/159 dead transitions. [2024-06-28 03:39:29,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 159 transitions, 1997 flow [2024-06-28 03:39:29,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:29,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:29,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-28 03:39:29,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-28 03:39:29,794 INFO L175 Difference]: Start difference. First operand has 155 places, 141 transitions, 1422 flow. Second operand 9 states and 110 transitions. [2024-06-28 03:39:29,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 159 transitions, 1997 flow [2024-06-28 03:39:29,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 159 transitions, 1919 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:29,841 INFO L231 Difference]: Finished difference. Result has 160 places, 142 transitions, 1512 flow [2024-06-28 03:39:29,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1512, PETRI_PLACES=160, PETRI_TRANSITIONS=142} [2024-06-28 03:39:29,841 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-28 03:39:29,841 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 142 transitions, 1512 flow [2024-06-28 03:39:29,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:29,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:29,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:29,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:39:29,842 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:29,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:29,842 INFO L85 PathProgramCache]: Analyzing trace with hash -400507075, now seen corresponding path program 4 times [2024-06-28 03:39:29,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:29,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557222748] [2024-06-28 03:39:29,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:29,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:30,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:30,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557222748] [2024-06-28 03:39:30,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557222748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:30,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:30,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:30,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496540899] [2024-06-28 03:39:30,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:30,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:30,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:30,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:30,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:30,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:30,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 142 transitions, 1512 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:30,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:30,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:30,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:30,817 INFO L124 PetriNetUnfolderBase]: 406/752 cut-off events. [2024-06-28 03:39:30,817 INFO L125 PetriNetUnfolderBase]: For 30360/30360 co-relation queries the response was YES. [2024-06-28 03:39:30,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4614 conditions, 752 events. 406/752 cut-off events. For 30360/30360 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3464 event pairs, 63 based on Foata normal form. 2/753 useless extension candidates. Maximal degree in co-relation 4539. Up to 567 conditions per place. [2024-06-28 03:39:30,848 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 99 selfloop transitions, 54 changer transitions 0/155 dead transitions. [2024-06-28 03:39:30,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 155 transitions, 1865 flow [2024-06-28 03:39:30,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:30,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:30,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 03:39:30,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:39:30,850 INFO L175 Difference]: Start difference. First operand has 160 places, 142 transitions, 1512 flow. Second operand 9 states and 99 transitions. [2024-06-28 03:39:30,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 155 transitions, 1865 flow [2024-06-28 03:39:30,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 155 transitions, 1731 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:30,919 INFO L231 Difference]: Finished difference. Result has 163 places, 143 transitions, 1504 flow [2024-06-28 03:39:30,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1504, PETRI_PLACES=163, PETRI_TRANSITIONS=143} [2024-06-28 03:39:30,920 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-28 03:39:30,920 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 143 transitions, 1504 flow [2024-06-28 03:39:30,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:30,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:30,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:30,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:39:30,921 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:30,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:30,921 INFO L85 PathProgramCache]: Analyzing trace with hash -400501123, now seen corresponding path program 4 times [2024-06-28 03:39:30,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:30,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109463173] [2024-06-28 03:39:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:30,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:31,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:31,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109463173] [2024-06-28 03:39:31,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109463173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:31,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:31,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:31,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598156706] [2024-06-28 03:39:31,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:31,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:31,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:31,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:31,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:31,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:31,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 143 transitions, 1504 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:31,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:31,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:31,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:31,539 INFO L124 PetriNetUnfolderBase]: 412/762 cut-off events. [2024-06-28 03:39:31,539 INFO L125 PetriNetUnfolderBase]: For 31538/31538 co-relation queries the response was YES. [2024-06-28 03:39:31,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4659 conditions, 762 events. 412/762 cut-off events. For 31538/31538 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3516 event pairs, 69 based on Foata normal form. 2/763 useless extension candidates. Maximal degree in co-relation 4583. Up to 382 conditions per place. [2024-06-28 03:39:31,544 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 86 selfloop transitions, 72 changer transitions 1/161 dead transitions. [2024-06-28 03:39:31,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 161 transitions, 2094 flow [2024-06-28 03:39:31,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:31,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-28 03:39:31,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-28 03:39:31,545 INFO L175 Difference]: Start difference. First operand has 163 places, 143 transitions, 1504 flow. Second operand 9 states and 110 transitions. [2024-06-28 03:39:31,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 161 transitions, 2094 flow [2024-06-28 03:39:31,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 161 transitions, 1978 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:31,608 INFO L231 Difference]: Finished difference. Result has 165 places, 144 transitions, 1553 flow [2024-06-28 03:39:31,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1553, PETRI_PLACES=165, PETRI_TRANSITIONS=144} [2024-06-28 03:39:31,608 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-28 03:39:31,608 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 144 transitions, 1553 flow [2024-06-28 03:39:31,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:31,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:31,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:31,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:39:31,609 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:31,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:31,609 INFO L85 PathProgramCache]: Analyzing trace with hash -406013605, now seen corresponding path program 5 times [2024-06-28 03:39:31,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:31,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362981410] [2024-06-28 03:39:31,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:31,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:32,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:32,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362981410] [2024-06-28 03:39:32,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362981410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:32,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:32,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:32,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404487114] [2024-06-28 03:39:32,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:32,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:32,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:32,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:32,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:32,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:32,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 144 transitions, 1553 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:32,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:32,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:32,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:32,588 INFO L124 PetriNetUnfolderBase]: 412/766 cut-off events. [2024-06-28 03:39:32,588 INFO L125 PetriNetUnfolderBase]: For 32849/32849 co-relation queries the response was YES. [2024-06-28 03:39:32,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4736 conditions, 766 events. 412/766 cut-off events. For 32849/32849 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3574 event pairs, 71 based on Foata normal form. 2/767 useless extension candidates. Maximal degree in co-relation 4659. Up to 581 conditions per place. [2024-06-28 03:39:32,593 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 111 selfloop transitions, 43 changer transitions 0/156 dead transitions. [2024-06-28 03:39:32,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 156 transitions, 1905 flow [2024-06-28 03:39:32,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:32,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 03:39:32,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-28 03:39:32,596 INFO L175 Difference]: Start difference. First operand has 165 places, 144 transitions, 1553 flow. Second operand 8 states and 89 transitions. [2024-06-28 03:39:32,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 156 transitions, 1905 flow [2024-06-28 03:39:32,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 156 transitions, 1787 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:32,655 INFO L231 Difference]: Finished difference. Result has 167 places, 145 transitions, 1541 flow [2024-06-28 03:39:32,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1541, PETRI_PLACES=167, PETRI_TRANSITIONS=145} [2024-06-28 03:39:32,656 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-28 03:39:32,656 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 145 transitions, 1541 flow [2024-06-28 03:39:32,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:32,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:32,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:32,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:39:32,657 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:32,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:32,657 INFO L85 PathProgramCache]: Analyzing trace with hash -405863503, now seen corresponding path program 5 times [2024-06-28 03:39:32,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:32,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803137372] [2024-06-28 03:39:32,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:32,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:33,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:33,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803137372] [2024-06-28 03:39:33,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803137372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:33,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:33,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:33,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414312216] [2024-06-28 03:39:33,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:33,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:33,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:33,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:33,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:33,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:33,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 145 transitions, 1541 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:33,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:33,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:33,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:33,292 INFO L124 PetriNetUnfolderBase]: 421/779 cut-off events. [2024-06-28 03:39:33,293 INFO L125 PetriNetUnfolderBase]: For 35371/35371 co-relation queries the response was YES. [2024-06-28 03:39:33,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4860 conditions, 779 events. 421/779 cut-off events. For 35371/35371 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3634 event pairs, 75 based on Foata normal form. 2/780 useless extension candidates. Maximal degree in co-relation 4782. Up to 397 conditions per place. [2024-06-28 03:39:33,298 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 91 selfloop transitions, 71 changer transitions 1/165 dead transitions. [2024-06-28 03:39:33,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 165 transitions, 2174 flow [2024-06-28 03:39:33,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:33,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:33,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 03:39:33,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-28 03:39:33,299 INFO L175 Difference]: Start difference. First operand has 167 places, 145 transitions, 1541 flow. Second operand 9 states and 107 transitions. [2024-06-28 03:39:33,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 165 transitions, 2174 flow [2024-06-28 03:39:33,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 165 transitions, 2078 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:33,376 INFO L231 Difference]: Finished difference. Result has 171 places, 149 transitions, 1689 flow [2024-06-28 03:39:33,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1689, PETRI_PLACES=171, PETRI_TRANSITIONS=149} [2024-06-28 03:39:33,376 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-28 03:39:33,377 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 149 transitions, 1689 flow [2024-06-28 03:39:33,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:33,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:33,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:33,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:39:33,377 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:33,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:33,378 INFO L85 PathProgramCache]: Analyzing trace with hash -406017325, now seen corresponding path program 6 times [2024-06-28 03:39:33,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:33,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994501405] [2024-06-28 03:39:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:33,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:33,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:33,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994501405] [2024-06-28 03:39:33,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994501405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:33,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:33,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:33,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793906039] [2024-06-28 03:39:33,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:33,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:33,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:33,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:33,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:34,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:34,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 149 transitions, 1689 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:34,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:34,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:34,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:34,272 INFO L124 PetriNetUnfolderBase]: 407/757 cut-off events. [2024-06-28 03:39:34,272 INFO L125 PetriNetUnfolderBase]: For 34501/34501 co-relation queries the response was YES. [2024-06-28 03:39:34,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4831 conditions, 757 events. 407/757 cut-off events. For 34501/34501 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3511 event pairs, 75 based on Foata normal form. 2/758 useless extension candidates. Maximal degree in co-relation 4751. Up to 534 conditions per place. [2024-06-28 03:39:34,277 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 113 selfloop transitions, 45 changer transitions 0/160 dead transitions. [2024-06-28 03:39:34,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 160 transitions, 2033 flow [2024-06-28 03:39:34,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:34,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:34,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 03:39:34,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-28 03:39:34,278 INFO L175 Difference]: Start difference. First operand has 171 places, 149 transitions, 1689 flow. Second operand 8 states and 89 transitions. [2024-06-28 03:39:34,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 160 transitions, 2033 flow [2024-06-28 03:39:34,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 160 transitions, 1957 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:34,361 INFO L231 Difference]: Finished difference. Result has 174 places, 149 transitions, 1708 flow [2024-06-28 03:39:34,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1708, PETRI_PLACES=174, PETRI_TRANSITIONS=149} [2024-06-28 03:39:34,362 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-28 03:39:34,362 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 149 transitions, 1708 flow [2024-06-28 03:39:34,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:34,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:34,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:34,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:39:34,363 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:34,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:34,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1386392384, now seen corresponding path program 1 times [2024-06-28 03:39:34,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:34,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492231221] [2024-06-28 03:39:34,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:34,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:35,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:35,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492231221] [2024-06-28 03:39:35,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492231221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:35,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:35,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:35,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331430424] [2024-06-28 03:39:35,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:35,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:35,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:35,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:35,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:35,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:35,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 149 transitions, 1708 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:35,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:35,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:35,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:35,335 INFO L124 PetriNetUnfolderBase]: 410/762 cut-off events. [2024-06-28 03:39:35,335 INFO L125 PetriNetUnfolderBase]: For 34778/34778 co-relation queries the response was YES. [2024-06-28 03:39:35,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4871 conditions, 762 events. 410/762 cut-off events. For 34778/34778 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3539 event pairs, 84 based on Foata normal form. 1/762 useless extension candidates. Maximal degree in co-relation 4790. Up to 676 conditions per place. [2024-06-28 03:39:35,340 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 122 selfloop transitions, 37 changer transitions 0/161 dead transitions. [2024-06-28 03:39:35,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 161 transitions, 2075 flow [2024-06-28 03:39:35,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:39:35,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:39:35,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-28 03:39:35,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-28 03:39:35,342 INFO L175 Difference]: Start difference. First operand has 174 places, 149 transitions, 1708 flow. Second operand 11 states and 112 transitions. [2024-06-28 03:39:35,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 161 transitions, 2075 flow [2024-06-28 03:39:35,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 161 transitions, 1962 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:35,425 INFO L231 Difference]: Finished difference. Result has 178 places, 151 transitions, 1706 flow [2024-06-28 03:39:35,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1706, PETRI_PLACES=178, PETRI_TRANSITIONS=151} [2024-06-28 03:39:35,425 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-28 03:39:35,425 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 151 transitions, 1706 flow [2024-06-28 03:39:35,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:35,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:35,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:35,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:39:35,426 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:35,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:35,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1386065675, now seen corresponding path program 6 times [2024-06-28 03:39:35,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:35,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265626478] [2024-06-28 03:39:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:35,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:35,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:35,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265626478] [2024-06-28 03:39:35,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265626478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:35,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:35,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:35,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390531917] [2024-06-28 03:39:35,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:35,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:35,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:35,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:35,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:35,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:35,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 151 transitions, 1706 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:35,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:35,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:35,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:36,149 INFO L124 PetriNetUnfolderBase]: 432/798 cut-off events. [2024-06-28 03:39:36,149 INFO L125 PetriNetUnfolderBase]: For 42611/42611 co-relation queries the response was YES. [2024-06-28 03:39:36,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5112 conditions, 798 events. 432/798 cut-off events. For 42611/42611 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3721 event pairs, 73 based on Foata normal form. 4/801 useless extension candidates. Maximal degree in co-relation 5031. Up to 401 conditions per place. [2024-06-28 03:39:36,155 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 84 selfloop transitions, 89 changer transitions 0/175 dead transitions. [2024-06-28 03:39:36,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 175 transitions, 2494 flow [2024-06-28 03:39:36,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:36,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:36,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 03:39:36,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-28 03:39:36,156 INFO L175 Difference]: Start difference. First operand has 178 places, 151 transitions, 1706 flow. Second operand 10 states and 123 transitions. [2024-06-28 03:39:36,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 175 transitions, 2494 flow [2024-06-28 03:39:36,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 175 transitions, 2355 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-28 03:39:36,247 INFO L231 Difference]: Finished difference. Result has 177 places, 157 transitions, 1835 flow [2024-06-28 03:39:36,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1835, PETRI_PLACES=177, PETRI_TRANSITIONS=157} [2024-06-28 03:39:36,248 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-28 03:39:36,248 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 157 transitions, 1835 flow [2024-06-28 03:39:36,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:36,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:36,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:36,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:39:36,248 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:36,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:36,249 INFO L85 PathProgramCache]: Analyzing trace with hash 590180895, now seen corresponding path program 7 times [2024-06-28 03:39:36,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:36,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132601780] [2024-06-28 03:39:36,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:36,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:36,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:36,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:36,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132601780] [2024-06-28 03:39:36,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132601780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:36,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:36,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:36,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296422875] [2024-06-28 03:39:36,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:36,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:36,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:36,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:36,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:36,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:36,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 157 transitions, 1835 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:36,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:36,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:36,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:36,994 INFO L124 PetriNetUnfolderBase]: 438/808 cut-off events. [2024-06-28 03:39:36,995 INFO L125 PetriNetUnfolderBase]: For 41677/41677 co-relation queries the response was YES. [2024-06-28 03:39:36,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5230 conditions, 808 events. 438/808 cut-off events. For 41677/41677 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3784 event pairs, 77 based on Foata normal form. 2/809 useless extension candidates. Maximal degree in co-relation 5150. Up to 403 conditions per place. [2024-06-28 03:39:37,000 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 94 selfloop transitions, 79 changer transitions 0/175 dead transitions. [2024-06-28 03:39:37,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 175 transitions, 2569 flow [2024-06-28 03:39:37,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:37,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:37,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-28 03:39:37,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-28 03:39:37,001 INFO L175 Difference]: Start difference. First operand has 177 places, 157 transitions, 1835 flow. Second operand 9 states and 113 transitions. [2024-06-28 03:39:37,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 175 transitions, 2569 flow [2024-06-28 03:39:37,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 175 transitions, 2373 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:37,087 INFO L231 Difference]: Finished difference. Result has 179 places, 159 transitions, 1828 flow [2024-06-28 03:39:37,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1641, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1828, PETRI_PLACES=179, PETRI_TRANSITIONS=159} [2024-06-28 03:39:37,088 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-28 03:39:37,088 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 159 transitions, 1828 flow [2024-06-28 03:39:37,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:37,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:37,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:37,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:39:37,089 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:37,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:37,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1120368395, now seen corresponding path program 8 times [2024-06-28 03:39:37,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:37,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618876936] [2024-06-28 03:39:37,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:37,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:37,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:37,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:37,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618876936] [2024-06-28 03:39:37,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618876936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:37,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:37,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:37,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028051140] [2024-06-28 03:39:37,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:37,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:37,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:37,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:37,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:37,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:37,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 159 transitions, 1828 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:37,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:37,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:37,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:37,840 INFO L124 PetriNetUnfolderBase]: 477/872 cut-off events. [2024-06-28 03:39:37,841 INFO L125 PetriNetUnfolderBase]: For 53427/53427 co-relation queries the response was YES. [2024-06-28 03:39:37,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5841 conditions, 872 events. 477/872 cut-off events. For 53427/53427 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4140 event pairs, 86 based on Foata normal form. 4/875 useless extension candidates. Maximal degree in co-relation 5760. Up to 429 conditions per place. [2024-06-28 03:39:37,847 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 102 selfloop transitions, 80 changer transitions 0/184 dead transitions. [2024-06-28 03:39:37,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 184 transitions, 2695 flow [2024-06-28 03:39:37,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:37,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:37,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-28 03:39:37,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-28 03:39:37,848 INFO L175 Difference]: Start difference. First operand has 179 places, 159 transitions, 1828 flow. Second operand 9 states and 113 transitions. [2024-06-28 03:39:37,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 184 transitions, 2695 flow [2024-06-28 03:39:37,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 184 transitions, 2519 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:37,955 INFO L231 Difference]: Finished difference. Result has 183 places, 167 transitions, 1959 flow [2024-06-28 03:39:37,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1959, PETRI_PLACES=183, PETRI_TRANSITIONS=167} [2024-06-28 03:39:37,956 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-28 03:39:37,956 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 167 transitions, 1959 flow [2024-06-28 03:39:37,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:37,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:37,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:37,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:39:37,956 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:37,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:37,957 INFO L85 PathProgramCache]: Analyzing trace with hash 600507764, now seen corresponding path program 2 times [2024-06-28 03:39:37,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:37,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774912937] [2024-06-28 03:39:37,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:37,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:38,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:38,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774912937] [2024-06-28 03:39:38,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774912937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:38,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:38,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:38,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360814942] [2024-06-28 03:39:38,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:38,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:38,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:38,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:38,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:38,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:38,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 167 transitions, 1959 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:38,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:38,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:38,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:38,837 INFO L124 PetriNetUnfolderBase]: 473/865 cut-off events. [2024-06-28 03:39:38,837 INFO L125 PetriNetUnfolderBase]: For 49539/49539 co-relation queries the response was YES. [2024-06-28 03:39:38,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5806 conditions, 865 events. 473/865 cut-off events. For 49539/49539 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4107 event pairs, 96 based on Foata normal form. 1/865 useless extension candidates. Maximal degree in co-relation 5723. Up to 787 conditions per place. [2024-06-28 03:39:38,843 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 140 selfloop transitions, 34 changer transitions 0/176 dead transitions. [2024-06-28 03:39:38,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 176 transitions, 2341 flow [2024-06-28 03:39:38,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:38,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 03:39:38,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-28 03:39:38,844 INFO L175 Difference]: Start difference. First operand has 183 places, 167 transitions, 1959 flow. Second operand 10 states and 102 transitions. [2024-06-28 03:39:38,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 176 transitions, 2341 flow [2024-06-28 03:39:38,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 176 transitions, 2190 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:38,953 INFO L231 Difference]: Finished difference. Result has 188 places, 168 transitions, 1899 flow [2024-06-28 03:39:38,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1899, PETRI_PLACES=188, PETRI_TRANSITIONS=168} [2024-06-28 03:39:38,953 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-28 03:39:38,953 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 168 transitions, 1899 flow [2024-06-28 03:39:38,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:38,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:38,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:38,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:39:38,954 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:38,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:38,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1120360955, now seen corresponding path program 9 times [2024-06-28 03:39:38,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:38,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602522041] [2024-06-28 03:39:38,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:38,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:39,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:39,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602522041] [2024-06-28 03:39:39,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602522041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:39,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:39,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:39,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102607597] [2024-06-28 03:39:39,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:39,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:39,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:39,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:39,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:39,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:39,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 168 transitions, 1899 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:39,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:39,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:39,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:39,731 INFO L124 PetriNetUnfolderBase]: 469/859 cut-off events. [2024-06-28 03:39:39,731 INFO L125 PetriNetUnfolderBase]: For 49112/49112 co-relation queries the response was YES. [2024-06-28 03:39:39,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5557 conditions, 859 events. 469/859 cut-off events. For 49112/49112 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4070 event pairs, 87 based on Foata normal form. 2/860 useless extension candidates. Maximal degree in co-relation 5473. Up to 424 conditions per place. [2024-06-28 03:39:39,737 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 102 selfloop transitions, 81 changer transitions 0/185 dead transitions. [2024-06-28 03:39:39,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 185 transitions, 2657 flow [2024-06-28 03:39:39,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:39,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:39,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-28 03:39:39,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 03:39:39,738 INFO L175 Difference]: Start difference. First operand has 188 places, 168 transitions, 1899 flow. Second operand 9 states and 114 transitions. [2024-06-28 03:39:39,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 185 transitions, 2657 flow [2024-06-28 03:39:39,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 185 transitions, 2576 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:39,835 INFO L231 Difference]: Finished difference. Result has 189 places, 169 transitions, 1999 flow [2024-06-28 03:39:39,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1999, PETRI_PLACES=189, PETRI_TRANSITIONS=169} [2024-06-28 03:39:39,835 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-06-28 03:39:39,836 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 169 transitions, 1999 flow [2024-06-28 03:39:39,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:39,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:39,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:39,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:39:39,836 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:39,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:39,837 INFO L85 PathProgramCache]: Analyzing trace with hash 846890934, now seen corresponding path program 3 times [2024-06-28 03:39:39,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:39,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798526557] [2024-06-28 03:39:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:39,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:40,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:40,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798526557] [2024-06-28 03:39:40,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798526557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:40,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:40,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:40,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418730357] [2024-06-28 03:39:40,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:40,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:40,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:40,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:40,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:40,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:40,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 169 transitions, 1999 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:40,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:40,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:40,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:40,922 INFO L124 PetriNetUnfolderBase]: 467/856 cut-off events. [2024-06-28 03:39:40,922 INFO L125 PetriNetUnfolderBase]: For 48202/48202 co-relation queries the response was YES. [2024-06-28 03:39:40,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5646 conditions, 856 events. 467/856 cut-off events. For 48202/48202 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4070 event pairs, 94 based on Foata normal form. 1/856 useless extension candidates. Maximal degree in co-relation 5561. Up to 778 conditions per place. [2024-06-28 03:39:40,928 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 143 selfloop transitions, 34 changer transitions 0/179 dead transitions. [2024-06-28 03:39:40,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 179 transitions, 2389 flow [2024-06-28 03:39:40,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:40,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:39:40,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-28 03:39:40,930 INFO L175 Difference]: Start difference. First operand has 189 places, 169 transitions, 1999 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:39:40,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 179 transitions, 2389 flow [2024-06-28 03:39:41,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 179 transitions, 2230 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:41,032 INFO L231 Difference]: Finished difference. Result has 193 places, 170 transitions, 1931 flow [2024-06-28 03:39:41,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1931, PETRI_PLACES=193, PETRI_TRANSITIONS=170} [2024-06-28 03:39:41,032 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-28 03:39:41,032 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 170 transitions, 1931 flow [2024-06-28 03:39:41,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:41,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:41,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:41,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:39:41,033 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:41,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:41,033 INFO L85 PathProgramCache]: Analyzing trace with hash 846890655, now seen corresponding path program 10 times [2024-06-28 03:39:41,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:41,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177560099] [2024-06-28 03:39:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:41,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:41,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:41,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177560099] [2024-06-28 03:39:41,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177560099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:41,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:41,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:41,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212949005] [2024-06-28 03:39:41,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:41,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:41,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:41,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:41,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:41,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:41,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 170 transitions, 1931 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:41,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:41,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:41,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:41,939 INFO L124 PetriNetUnfolderBase]: 469/860 cut-off events. [2024-06-28 03:39:41,939 INFO L125 PetriNetUnfolderBase]: For 50973/50973 co-relation queries the response was YES. [2024-06-28 03:39:41,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5470 conditions, 860 events. 469/860 cut-off events. For 50973/50973 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4092 event pairs, 78 based on Foata normal form. 4/863 useless extension candidates. Maximal degree in co-relation 5384. Up to 422 conditions per place. [2024-06-28 03:39:41,945 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 94 selfloop transitions, 95 changer transitions 0/191 dead transitions. [2024-06-28 03:39:41,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 191 transitions, 2855 flow [2024-06-28 03:39:41,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:41,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:41,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 03:39:41,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 03:39:41,946 INFO L175 Difference]: Start difference. First operand has 193 places, 170 transitions, 1931 flow. Second operand 10 states and 126 transitions. [2024-06-28 03:39:41,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 191 transitions, 2855 flow [2024-06-28 03:39:42,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 191 transitions, 2759 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 03:39:42,044 INFO L231 Difference]: Finished difference. Result has 194 places, 172 transitions, 2065 flow [2024-06-28 03:39:42,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2065, PETRI_PLACES=194, PETRI_TRANSITIONS=172} [2024-06-28 03:39:42,045 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-06-28 03:39:42,045 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 172 transitions, 2065 flow [2024-06-28 03:39:42,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:42,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:42,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:42,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:39:42,045 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:42,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:42,046 INFO L85 PathProgramCache]: Analyzing trace with hash 846883215, now seen corresponding path program 11 times [2024-06-28 03:39:42,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:42,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579070995] [2024-06-28 03:39:42,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:42,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:42,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:42,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579070995] [2024-06-28 03:39:42,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579070995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:42,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:42,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:42,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557693671] [2024-06-28 03:39:42,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:42,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:42,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:42,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:42,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:42,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:42,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 172 transitions, 2065 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:42,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:42,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:42,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:42,944 INFO L124 PetriNetUnfolderBase]: 465/854 cut-off events. [2024-06-28 03:39:42,944 INFO L125 PetriNetUnfolderBase]: For 46360/46360 co-relation queries the response was YES. [2024-06-28 03:39:42,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5496 conditions, 854 events. 465/854 cut-off events. For 46360/46360 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4064 event pairs, 73 based on Foata normal form. 2/855 useless extension candidates. Maximal degree in co-relation 5410. Up to 421 conditions per place. [2024-06-28 03:39:42,950 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 89 selfloop transitions, 99 changer transitions 0/190 dead transitions. [2024-06-28 03:39:42,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 190 transitions, 2845 flow [2024-06-28 03:39:42,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:42,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 03:39:42,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:39:42,951 INFO L175 Difference]: Start difference. First operand has 194 places, 172 transitions, 2065 flow. Second operand 10 states and 124 transitions. [2024-06-28 03:39:42,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 190 transitions, 2845 flow [2024-06-28 03:39:43,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 190 transitions, 2559 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 03:39:43,058 INFO L231 Difference]: Finished difference. Result has 195 places, 172 transitions, 1982 flow [2024-06-28 03:39:43,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1982, PETRI_PLACES=195, PETRI_TRANSITIONS=172} [2024-06-28 03:39:43,058 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-28 03:39:43,059 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 172 transitions, 1982 flow [2024-06-28 03:39:43,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:43,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:43,059 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 03:39:43,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:39:43,059 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:43,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:43,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1441677902, now seen corresponding path program 1 times [2024-06-28 03:39:43,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:43,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717320632] [2024-06-28 03:39:43,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:43,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:43,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:43,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717320632] [2024-06-28 03:39:43,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717320632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:43,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:43,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:43,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844300093] [2024-06-28 03:39:43,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:43,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:43,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:43,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:43,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:43,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:43,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 172 transitions, 1982 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:43,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:43,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:43,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:44,036 INFO L124 PetriNetUnfolderBase]: 469/862 cut-off events. [2024-06-28 03:39:44,036 INFO L125 PetriNetUnfolderBase]: For 47156/47156 co-relation queries the response was YES. [2024-06-28 03:39:44,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5501 conditions, 862 events. 469/862 cut-off events. For 47156/47156 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4105 event pairs, 74 based on Foata normal form. 2/863 useless extension candidates. Maximal degree in co-relation 5414. Up to 756 conditions per place. [2024-06-28 03:39:44,042 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 163 selfloop transitions, 22 changer transitions 0/187 dead transitions. [2024-06-28 03:39:44,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 187 transitions, 2392 flow [2024-06-28 03:39:44,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:44,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-28 03:39:44,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-28 03:39:44,043 INFO L175 Difference]: Start difference. First operand has 195 places, 172 transitions, 1982 flow. Second operand 9 states and 91 transitions. [2024-06-28 03:39:44,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 187 transitions, 2392 flow [2024-06-28 03:39:44,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 187 transitions, 2176 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:44,149 INFO L231 Difference]: Finished difference. Result has 196 places, 173 transitions, 1824 flow [2024-06-28 03:39:44,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1824, PETRI_PLACES=196, PETRI_TRANSITIONS=173} [2024-06-28 03:39:44,149 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2024-06-28 03:39:44,150 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 173 transitions, 1824 flow [2024-06-28 03:39:44,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:44,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:44,151 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 03:39:44,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:39:44,151 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:44,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:44,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1438996712, now seen corresponding path program 2 times [2024-06-28 03:39:44,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:44,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411984038] [2024-06-28 03:39:44,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:44,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:44,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:44,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411984038] [2024-06-28 03:39:44,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411984038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:44,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:44,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:44,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989271168] [2024-06-28 03:39:44,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:44,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:44,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:44,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:44,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:44,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:44,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 173 transitions, 1824 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:44,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:44,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:44,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:45,140 INFO L124 PetriNetUnfolderBase]: 480/883 cut-off events. [2024-06-28 03:39:45,141 INFO L125 PetriNetUnfolderBase]: For 51880/51880 co-relation queries the response was YES. [2024-06-28 03:39:45,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5523 conditions, 883 events. 480/883 cut-off events. For 51880/51880 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4274 event pairs, 84 based on Foata normal form. 2/884 useless extension candidates. Maximal degree in co-relation 5435. Up to 693 conditions per place. [2024-06-28 03:39:45,147 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 152 selfloop transitions, 36 changer transitions 0/190 dead transitions. [2024-06-28 03:39:45,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 190 transitions, 2378 flow [2024-06-28 03:39:45,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:45,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:45,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:39:45,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 03:39:45,148 INFO L175 Difference]: Start difference. First operand has 196 places, 173 transitions, 1824 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:39:45,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 190 transitions, 2378 flow [2024-06-28 03:39:45,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 190 transitions, 2330 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:45,262 INFO L231 Difference]: Finished difference. Result has 198 places, 175 transitions, 1874 flow [2024-06-28 03:39:45,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1776, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1874, PETRI_PLACES=198, PETRI_TRANSITIONS=175} [2024-06-28 03:39:45,262 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-28 03:39:45,263 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 175 transitions, 1874 flow [2024-06-28 03:39:45,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:45,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:45,263 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 03:39:45,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:39:45,263 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:45,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:45,264 INFO L85 PathProgramCache]: Analyzing trace with hash 26487332, now seen corresponding path program 3 times [2024-06-28 03:39:45,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:45,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875772603] [2024-06-28 03:39:45,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:45,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:46,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:46,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:46,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875772603] [2024-06-28 03:39:46,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875772603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:46,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:46,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:46,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126468620] [2024-06-28 03:39:46,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:46,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:46,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:46,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:46,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:46,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:46,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 175 transitions, 1874 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:46,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:46,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:46,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:46,391 INFO L124 PetriNetUnfolderBase]: 513/942 cut-off events. [2024-06-28 03:39:46,391 INFO L125 PetriNetUnfolderBase]: For 57715/57715 co-relation queries the response was YES. [2024-06-28 03:39:46,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6015 conditions, 942 events. 513/942 cut-off events. For 57715/57715 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4638 event pairs, 88 based on Foata normal form. 2/943 useless extension candidates. Maximal degree in co-relation 5926. Up to 811 conditions per place. [2024-06-28 03:39:46,398 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 163 selfloop transitions, 37 changer transitions 0/202 dead transitions. [2024-06-28 03:39:46,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 202 transitions, 2578 flow [2024-06-28 03:39:46,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:46,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:46,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:39:46,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-28 03:39:46,399 INFO L175 Difference]: Start difference. First operand has 198 places, 175 transitions, 1874 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:39:46,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 202 transitions, 2578 flow [2024-06-28 03:39:46,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 202 transitions, 2508 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:46,531 INFO L231 Difference]: Finished difference. Result has 205 places, 184 transitions, 2028 flow [2024-06-28 03:39:46,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2028, PETRI_PLACES=205, PETRI_TRANSITIONS=184} [2024-06-28 03:39:46,531 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-28 03:39:46,531 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 184 transitions, 2028 flow [2024-06-28 03:39:46,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:46,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:46,532 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 03:39:46,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:39:46,532 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:46,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:46,532 INFO L85 PathProgramCache]: Analyzing trace with hash 26491982, now seen corresponding path program 4 times [2024-06-28 03:39:46,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:46,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145083966] [2024-06-28 03:39:46,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:46,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:47,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:47,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:47,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145083966] [2024-06-28 03:39:47,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145083966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:47,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:47,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:47,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203025093] [2024-06-28 03:39:47,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:47,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:47,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:47,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:47,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:47,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:47,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 184 transitions, 2028 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:47,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:47,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:47,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:47,550 INFO L124 PetriNetUnfolderBase]: 514/945 cut-off events. [2024-06-28 03:39:47,550 INFO L125 PetriNetUnfolderBase]: For 59550/59550 co-relation queries the response was YES. [2024-06-28 03:39:47,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5991 conditions, 945 events. 514/945 cut-off events. For 59550/59550 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4670 event pairs, 90 based on Foata normal form. 4/948 useless extension candidates. Maximal degree in co-relation 5898. Up to 794 conditions per place. [2024-06-28 03:39:47,557 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 151 selfloop transitions, 46 changer transitions 0/199 dead transitions. [2024-06-28 03:39:47,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 199 transitions, 2470 flow [2024-06-28 03:39:47,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:47,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:47,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:39:47,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-28 03:39:47,558 INFO L175 Difference]: Start difference. First operand has 205 places, 184 transitions, 2028 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:39:47,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 199 transitions, 2470 flow [2024-06-28 03:39:47,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 199 transitions, 2424 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:47,678 INFO L231 Difference]: Finished difference. Result has 209 places, 185 transitions, 2094 flow [2024-06-28 03:39:47,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1982, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2094, PETRI_PLACES=209, PETRI_TRANSITIONS=185} [2024-06-28 03:39:47,678 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-28 03:39:47,678 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 185 transitions, 2094 flow [2024-06-28 03:39:47,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:47,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:47,679 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 03:39:47,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:39:47,679 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:47,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:47,679 INFO L85 PathProgramCache]: Analyzing trace with hash 26492168, now seen corresponding path program 1 times [2024-06-28 03:39:47,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:47,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024517462] [2024-06-28 03:39:47,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:47,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:48,340 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 03:39:48,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:48,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024517462] [2024-06-28 03:39:48,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024517462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:48,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:48,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:48,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395349126] [2024-06-28 03:39:48,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:48,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:48,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:48,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:48,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:48,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:48,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 185 transitions, 2094 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:48,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:48,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:48,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:48,667 INFO L124 PetriNetUnfolderBase]: 509/930 cut-off events. [2024-06-28 03:39:48,668 INFO L125 PetriNetUnfolderBase]: For 53334/53334 co-relation queries the response was YES. [2024-06-28 03:39:48,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5988 conditions, 930 events. 509/930 cut-off events. For 53334/53334 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4562 event pairs, 89 based on Foata normal form. 1/930 useless extension candidates. Maximal degree in co-relation 5893. Up to 778 conditions per place. [2024-06-28 03:39:48,674 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 147 selfloop transitions, 46 changer transitions 4/199 dead transitions. [2024-06-28 03:39:48,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 199 transitions, 2528 flow [2024-06-28 03:39:48,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:48,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:39:48,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:39:48,675 INFO L175 Difference]: Start difference. First operand has 209 places, 185 transitions, 2094 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:39:48,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 199 transitions, 2528 flow [2024-06-28 03:39:48,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 199 transitions, 2432 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:48,810 INFO L231 Difference]: Finished difference. Result has 211 places, 181 transitions, 2051 flow [2024-06-28 03:39:48,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2051, PETRI_PLACES=211, PETRI_TRANSITIONS=181} [2024-06-28 03:39:48,811 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-28 03:39:48,811 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 181 transitions, 2051 flow [2024-06-28 03:39:48,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:48,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:48,811 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 03:39:48,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:39:48,812 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:48,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:48,812 INFO L85 PathProgramCache]: Analyzing trace with hash 475617560, now seen corresponding path program 5 times [2024-06-28 03:39:48,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:48,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300806260] [2024-06-28 03:39:48,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:48,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:49,547 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 03:39:49,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:49,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300806260] [2024-06-28 03:39:49,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300806260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:49,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:49,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:49,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682326096] [2024-06-28 03:39:49,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:49,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:49,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:49,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:49,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:49,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:49,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 181 transitions, 2051 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:49,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:49,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:49,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:49,844 INFO L124 PetriNetUnfolderBase]: 496/903 cut-off events. [2024-06-28 03:39:49,844 INFO L125 PetriNetUnfolderBase]: For 57055/57055 co-relation queries the response was YES. [2024-06-28 03:39:49,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5925 conditions, 903 events. 496/903 cut-off events. For 57055/57055 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4398 event pairs, 66 based on Foata normal form. 2/904 useless extension candidates. Maximal degree in co-relation 5829. Up to 637 conditions per place. [2024-06-28 03:39:49,851 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 118 selfloop transitions, 75 changer transitions 0/195 dead transitions. [2024-06-28 03:39:49,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 195 transitions, 2485 flow [2024-06-28 03:39:49,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:49,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 03:39:49,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 03:39:49,852 INFO L175 Difference]: Start difference. First operand has 211 places, 181 transitions, 2051 flow. Second operand 9 states and 102 transitions. [2024-06-28 03:39:49,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 195 transitions, 2485 flow [2024-06-28 03:39:49,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 195 transitions, 2244 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-28 03:39:49,973 INFO L231 Difference]: Finished difference. Result has 207 places, 182 transitions, 1978 flow [2024-06-28 03:39:49,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1978, PETRI_PLACES=207, PETRI_TRANSITIONS=182} [2024-06-28 03:39:49,973 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-28 03:39:49,973 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 182 transitions, 1978 flow [2024-06-28 03:39:49,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:49,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:49,974 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 03:39:49,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:39:49,974 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:49,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:49,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2010305196, now seen corresponding path program 6 times [2024-06-28 03:39:49,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:49,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751158913] [2024-06-28 03:39:49,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:49,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:50,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:50,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751158913] [2024-06-28 03:39:50,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751158913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:50,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:50,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:50,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30420065] [2024-06-28 03:39:50,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:50,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:50,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:50,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:50,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:50,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:50,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 182 transitions, 1978 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:50,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:50,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:50,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:50,890 INFO L124 PetriNetUnfolderBase]: 500/911 cut-off events. [2024-06-28 03:39:50,890 INFO L125 PetriNetUnfolderBase]: For 55333/55333 co-relation queries the response was YES. [2024-06-28 03:39:50,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5873 conditions, 911 events. 500/911 cut-off events. For 55333/55333 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4455 event pairs, 68 based on Foata normal form. 2/912 useless extension candidates. Maximal degree in co-relation 5777. Up to 645 conditions per place. [2024-06-28 03:39:50,897 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 122 selfloop transitions, 72 changer transitions 0/196 dead transitions. [2024-06-28 03:39:50,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 196 transitions, 2416 flow [2024-06-28 03:39:50,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:50,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:50,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 03:39:50,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 03:39:50,898 INFO L175 Difference]: Start difference. First operand has 207 places, 182 transitions, 1978 flow. Second operand 9 states and 102 transitions. [2024-06-28 03:39:50,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 196 transitions, 2416 flow [2024-06-28 03:39:51,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 196 transitions, 2258 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:51,026 INFO L231 Difference]: Finished difference. Result has 209 places, 183 transitions, 1984 flow [2024-06-28 03:39:51,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1984, PETRI_PLACES=209, PETRI_TRANSITIONS=183} [2024-06-28 03:39:51,027 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-28 03:39:51,027 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 183 transitions, 1984 flow [2024-06-28 03:39:51,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:51,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:51,027 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 03:39:51,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:39:51,027 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:51,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:51,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1157951088, now seen corresponding path program 7 times [2024-06-28 03:39:51,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:51,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059550064] [2024-06-28 03:39:51,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:51,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:51,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:51,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059550064] [2024-06-28 03:39:51,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059550064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:51,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:51,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:51,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756830986] [2024-06-28 03:39:51,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:51,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:51,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:51,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:51,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:51,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:51,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 183 transitions, 1984 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:51,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:51,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:51,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:51,991 INFO L124 PetriNetUnfolderBase]: 504/919 cut-off events. [2024-06-28 03:39:51,991 INFO L125 PetriNetUnfolderBase]: For 57165/57165 co-relation queries the response was YES. [2024-06-28 03:39:51,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5916 conditions, 919 events. 504/919 cut-off events. For 57165/57165 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4516 event pairs, 68 based on Foata normal form. 2/920 useless extension candidates. Maximal degree in co-relation 5819. Up to 633 conditions per place. [2024-06-28 03:39:51,999 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 121 selfloop transitions, 74 changer transitions 0/197 dead transitions. [2024-06-28 03:39:51,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 197 transitions, 2424 flow [2024-06-28 03:39:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:51,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:51,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 03:39:52,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 03:39:52,000 INFO L175 Difference]: Start difference. First operand has 209 places, 183 transitions, 1984 flow. Second operand 9 states and 102 transitions. [2024-06-28 03:39:52,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 197 transitions, 2424 flow [2024-06-28 03:39:52,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 197 transitions, 2270 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:52,135 INFO L231 Difference]: Finished difference. Result has 211 places, 184 transitions, 2000 flow [2024-06-28 03:39:52,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2000, PETRI_PLACES=211, PETRI_TRANSITIONS=184} [2024-06-28 03:39:52,135 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-28 03:39:52,135 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 184 transitions, 2000 flow [2024-06-28 03:39:52,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:52,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:52,136 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 03:39:52,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:39:52,136 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:52,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:52,136 INFO L85 PathProgramCache]: Analyzing trace with hash 298486040, now seen corresponding path program 8 times [2024-06-28 03:39:52,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:52,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249934242] [2024-06-28 03:39:52,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:52,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:52,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:52,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249934242] [2024-06-28 03:39:52,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249934242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:52,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:52,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:52,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624215378] [2024-06-28 03:39:52,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:52,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:52,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:52,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:52,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:52,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:52,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 184 transitions, 2000 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:52,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:52,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:52,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:53,317 INFO L124 PetriNetUnfolderBase]: 508/927 cut-off events. [2024-06-28 03:39:53,318 INFO L125 PetriNetUnfolderBase]: For 58943/58943 co-relation queries the response was YES. [2024-06-28 03:39:53,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5985 conditions, 927 events. 508/927 cut-off events. For 58943/58943 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4563 event pairs, 77 based on Foata normal form. 2/928 useless extension candidates. Maximal degree in co-relation 5887. Up to 661 conditions per place. [2024-06-28 03:39:53,325 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 129 selfloop transitions, 68 changer transitions 0/199 dead transitions. [2024-06-28 03:39:53,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 199 transitions, 2453 flow [2024-06-28 03:39:53,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:53,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:53,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:39:53,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:39:53,327 INFO L175 Difference]: Start difference. First operand has 211 places, 184 transitions, 2000 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:39:53,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 199 transitions, 2453 flow [2024-06-28 03:39:53,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 199 transitions, 2293 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:53,466 INFO L231 Difference]: Finished difference. Result has 214 places, 185 transitions, 2000 flow [2024-06-28 03:39:53,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1840, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2000, PETRI_PLACES=214, PETRI_TRANSITIONS=185} [2024-06-28 03:39:53,467 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-28 03:39:53,467 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 185 transitions, 2000 flow [2024-06-28 03:39:53,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:53,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:53,467 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 03:39:53,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:39:53,468 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:53,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:53,468 INFO L85 PathProgramCache]: Analyzing trace with hash 298481390, now seen corresponding path program 9 times [2024-06-28 03:39:53,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:53,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939743642] [2024-06-28 03:39:53,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:53,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:54,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:54,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:54,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939743642] [2024-06-28 03:39:54,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939743642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:54,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:54,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:54,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935500428] [2024-06-28 03:39:54,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:54,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:54,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:54,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:54,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:54,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:54,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 185 transitions, 2000 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:54,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:54,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:54,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:54,615 INFO L124 PetriNetUnfolderBase]: 512/935 cut-off events. [2024-06-28 03:39:54,616 INFO L125 PetriNetUnfolderBase]: For 60683/60683 co-relation queries the response was YES. [2024-06-28 03:39:54,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6026 conditions, 935 events. 512/935 cut-off events. For 60683/60683 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4638 event pairs, 77 based on Foata normal form. 2/936 useless extension candidates. Maximal degree in co-relation 5927. Up to 655 conditions per place. [2024-06-28 03:39:54,623 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 129 selfloop transitions, 69 changer transitions 0/200 dead transitions. [2024-06-28 03:39:54,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 200 transitions, 2455 flow [2024-06-28 03:39:54,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:54,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:54,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:39:54,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:39:54,624 INFO L175 Difference]: Start difference. First operand has 214 places, 185 transitions, 2000 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:39:54,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 200 transitions, 2455 flow [2024-06-28 03:39:54,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 200 transitions, 2305 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:54,769 INFO L231 Difference]: Finished difference. Result has 216 places, 186 transitions, 2014 flow [2024-06-28 03:39:54,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2014, PETRI_PLACES=216, PETRI_TRANSITIONS=186} [2024-06-28 03:39:54,769 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-28 03:39:54,769 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 186 transitions, 2014 flow [2024-06-28 03:39:54,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:54,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:54,770 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 03:39:54,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:39:54,770 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:54,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:54,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1328768838, now seen corresponding path program 10 times [2024-06-28 03:39:54,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:54,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966527773] [2024-06-28 03:39:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:54,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:55,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:55,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966527773] [2024-06-28 03:39:55,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966527773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:55,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:55,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:55,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601527509] [2024-06-28 03:39:55,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:55,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:55,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:55,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:55,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:55,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:55,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 186 transitions, 2014 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:55,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:55,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:55,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:55,767 INFO L124 PetriNetUnfolderBase]: 516/943 cut-off events. [2024-06-28 03:39:55,767 INFO L125 PetriNetUnfolderBase]: For 62610/62610 co-relation queries the response was YES. [2024-06-28 03:39:55,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6091 conditions, 943 events. 516/943 cut-off events. For 62610/62610 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4678 event pairs, 82 based on Foata normal form. 2/944 useless extension candidates. Maximal degree in co-relation 5991. Up to 580 conditions per place. [2024-06-28 03:39:55,774 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 129 selfloop transitions, 70 changer transitions 0/201 dead transitions. [2024-06-28 03:39:55,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 201 transitions, 2604 flow [2024-06-28 03:39:55,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:55,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:55,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 03:39:55,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 03:39:55,775 INFO L175 Difference]: Start difference. First operand has 216 places, 186 transitions, 2014 flow. Second operand 9 states and 101 transitions. [2024-06-28 03:39:55,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 201 transitions, 2604 flow [2024-06-28 03:39:55,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 201 transitions, 2450 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:55,916 INFO L231 Difference]: Finished difference. Result has 217 places, 187 transitions, 2026 flow [2024-06-28 03:39:55,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1860, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2026, PETRI_PLACES=217, PETRI_TRANSITIONS=187} [2024-06-28 03:39:55,916 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-28 03:39:55,916 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 187 transitions, 2026 flow [2024-06-28 03:39:55,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:55,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:55,917 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 03:39:55,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:39:55,917 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:55,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:55,917 INFO L85 PathProgramCache]: Analyzing trace with hash 483570264, now seen corresponding path program 11 times [2024-06-28 03:39:55,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:55,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757543439] [2024-06-28 03:39:55,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:55,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:56,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:56,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757543439] [2024-06-28 03:39:56,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757543439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:56,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:56,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:39:56,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122998122] [2024-06-28 03:39:56,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:56,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:39:56,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:56,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:39:56,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:39:56,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:56,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 187 transitions, 2026 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:56,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:56,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:56,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:57,070 INFO L124 PetriNetUnfolderBase]: 520/951 cut-off events. [2024-06-28 03:39:57,070 INFO L125 PetriNetUnfolderBase]: For 64528/64528 co-relation queries the response was YES. [2024-06-28 03:39:57,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6162 conditions, 951 events. 520/951 cut-off events. For 64528/64528 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4734 event pairs, 75 based on Foata normal form. 2/952 useless extension candidates. Maximal degree in co-relation 6061. Up to 685 conditions per place. [2024-06-28 03:39:57,077 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 125 selfloop transitions, 75 changer transitions 0/202 dead transitions. [2024-06-28 03:39:57,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 202 transitions, 2488 flow [2024-06-28 03:39:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:57,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:39:57,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:39:57,078 INFO L175 Difference]: Start difference. First operand has 217 places, 187 transitions, 2026 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:39:57,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 202 transitions, 2488 flow [2024-06-28 03:39:57,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 202 transitions, 2319 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:57,225 INFO L231 Difference]: Finished difference. Result has 220 places, 188 transitions, 2037 flow [2024-06-28 03:39:57,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2037, PETRI_PLACES=220, PETRI_TRANSITIONS=188} [2024-06-28 03:39:57,225 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-28 03:39:57,225 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 188 transitions, 2037 flow [2024-06-28 03:39:57,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:57,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:57,226 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 03:39:57,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:39:57,226 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:57,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:57,226 INFO L85 PathProgramCache]: Analyzing trace with hash 768916398, now seen corresponding path program 1 times [2024-06-28 03:39:57,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:57,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050893217] [2024-06-28 03:39:57,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:57,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:57,966 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 03:39:57,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:57,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050893217] [2024-06-28 03:39:57,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050893217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:57,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:57,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:39:57,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625435436] [2024-06-28 03:39:57,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:57,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:39:57,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:57,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:39:57,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:39:58,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:58,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 188 transitions, 2037 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:58,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:58,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:58,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:58,423 INFO L124 PetriNetUnfolderBase]: 539/994 cut-off events. [2024-06-28 03:39:58,423 INFO L125 PetriNetUnfolderBase]: For 90051/90051 co-relation queries the response was YES. [2024-06-28 03:39:58,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6116 conditions, 994 events. 539/994 cut-off events. For 90051/90051 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5014 event pairs, 79 based on Foata normal form. 14/1007 useless extension candidates. Maximal degree in co-relation 6015. Up to 571 conditions per place. [2024-06-28 03:39:58,431 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 109 selfloop transitions, 93 changer transitions 8/212 dead transitions. [2024-06-28 03:39:58,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 212 transitions, 2564 flow [2024-06-28 03:39:58,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:39:58,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:39:58,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 03:39:58,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 03:39:58,432 INFO L175 Difference]: Start difference. First operand has 220 places, 188 transitions, 2037 flow. Second operand 11 states and 130 transitions. [2024-06-28 03:39:58,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 212 transitions, 2564 flow [2024-06-28 03:39:58,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 212 transitions, 2329 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 03:39:58,565 INFO L231 Difference]: Finished difference. Result has 222 places, 188 transitions, 2010 flow [2024-06-28 03:39:58,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2010, PETRI_PLACES=222, PETRI_TRANSITIONS=188} [2024-06-28 03:39:58,565 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-28 03:39:58,565 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 188 transitions, 2010 flow [2024-06-28 03:39:58,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:58,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:58,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:58,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:39:58,566 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:58,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:58,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1115559956, now seen corresponding path program 12 times [2024-06-28 03:39:58,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:58,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11633125] [2024-06-28 03:39:58,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:58,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:59,199 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 03:39:59,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:59,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11633125] [2024-06-28 03:39:59,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11633125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:59,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:59,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:59,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132216299] [2024-06-28 03:39:59,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:59,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:59,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:59,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:59,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:59,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:59,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 188 transitions, 2010 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:59,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:59,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:59,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:59,504 INFO L124 PetriNetUnfolderBase]: 517/952 cut-off events. [2024-06-28 03:39:59,504 INFO L125 PetriNetUnfolderBase]: For 64538/64538 co-relation queries the response was YES. [2024-06-28 03:39:59,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5901 conditions, 952 events. 517/952 cut-off events. For 64538/64538 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4786 event pairs, 83 based on Foata normal form. 2/953 useless extension candidates. Maximal degree in co-relation 5800. Up to 686 conditions per place. [2024-06-28 03:39:59,512 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 136 selfloop transitions, 63 changer transitions 0/201 dead transitions. [2024-06-28 03:39:59,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 201 transitions, 2459 flow [2024-06-28 03:39:59,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:59,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 03:39:59,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 03:39:59,512 INFO L175 Difference]: Start difference. First operand has 222 places, 188 transitions, 2010 flow. Second operand 9 states and 101 transitions. [2024-06-28 03:39:59,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 201 transitions, 2459 flow [2024-06-28 03:39:59,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 201 transitions, 2259 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:59,647 INFO L231 Difference]: Finished difference. Result has 223 places, 189 transitions, 1961 flow [2024-06-28 03:39:59,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1961, PETRI_PLACES=223, PETRI_TRANSITIONS=189} [2024-06-28 03:39:59,648 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-28 03:39:59,648 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 189 transitions, 1961 flow [2024-06-28 03:39:59,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:59,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:59,648 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 03:39:59,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:39:59,648 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:59,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:59,648 INFO L85 PathProgramCache]: Analyzing trace with hash 365011872, now seen corresponding path program 13 times [2024-06-28 03:39:59,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:59,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384917738] [2024-06-28 03:39:59,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:59,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:00,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:00,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384917738] [2024-06-28 03:40:00,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384917738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:00,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:00,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:00,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872603206] [2024-06-28 03:40:00,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:00,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:00,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:00,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:00,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:00,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:00,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 189 transitions, 1961 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:00,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:00,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:00,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:00,572 INFO L124 PetriNetUnfolderBase]: 521/960 cut-off events. [2024-06-28 03:40:00,581 INFO L125 PetriNetUnfolderBase]: For 64702/64702 co-relation queries the response was YES. [2024-06-28 03:40:00,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5858 conditions, 960 events. 521/960 cut-off events. For 64702/64702 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4849 event pairs, 83 based on Foata normal form. 2/961 useless extension candidates. Maximal degree in co-relation 5756. Up to 659 conditions per place. [2024-06-28 03:40:00,588 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 134 selfloop transitions, 67 changer transitions 0/203 dead transitions. [2024-06-28 03:40:00,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 203 transitions, 2560 flow [2024-06-28 03:40:00,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:00,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:00,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 03:40:00,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 03:40:00,608 INFO L175 Difference]: Start difference. First operand has 223 places, 189 transitions, 1961 flow. Second operand 9 states and 103 transitions. [2024-06-28 03:40:00,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 203 transitions, 2560 flow [2024-06-28 03:40:00,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 203 transitions, 2420 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:00,789 INFO L231 Difference]: Finished difference. Result has 225 places, 190 transitions, 1980 flow [2024-06-28 03:40:00,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1980, PETRI_PLACES=225, PETRI_TRANSITIONS=190} [2024-06-28 03:40:00,790 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-28 03:40:00,790 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 190 transitions, 1980 flow [2024-06-28 03:40:00,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:00,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:00,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:00,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:40:00,791 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:00,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:00,791 INFO L85 PathProgramCache]: Analyzing trace with hash 2112677806, now seen corresponding path program 1 times [2024-06-28 03:40:00,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:00,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167163904] [2024-06-28 03:40:00,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:00,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:01,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:01,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:01,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167163904] [2024-06-28 03:40:01,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167163904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:01,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:01,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:01,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051872732] [2024-06-28 03:40:01,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:01,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:01,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:01,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:01,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:01,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:01,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 190 transitions, 1980 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:01,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:01,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:01,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:01,617 INFO L124 PetriNetUnfolderBase]: 517/954 cut-off events. [2024-06-28 03:40:01,617 INFO L125 PetriNetUnfolderBase]: For 61025/61025 co-relation queries the response was YES. [2024-06-28 03:40:01,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5698 conditions, 954 events. 517/954 cut-off events. For 61025/61025 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4822 event pairs, 93 based on Foata normal form. 2/955 useless extension candidates. Maximal degree in co-relation 5595. Up to 571 conditions per place. [2024-06-28 03:40:01,625 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 125 selfloop transitions, 76 changer transitions 0/203 dead transitions. [2024-06-28 03:40:01,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 203 transitions, 2420 flow [2024-06-28 03:40:01,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:01,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:01,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 03:40:01,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-28 03:40:01,634 INFO L175 Difference]: Start difference. First operand has 225 places, 190 transitions, 1980 flow. Second operand 9 states and 107 transitions. [2024-06-28 03:40:01,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 203 transitions, 2420 flow [2024-06-28 03:40:01,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 203 transitions, 2247 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:01,784 INFO L231 Difference]: Finished difference. Result has 227 places, 190 transitions, 1969 flow [2024-06-28 03:40:01,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1969, PETRI_PLACES=227, PETRI_TRANSITIONS=190} [2024-06-28 03:40:01,784 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-28 03:40:01,784 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 190 transitions, 1969 flow [2024-06-28 03:40:01,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:01,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:01,785 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 03:40:01,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:40:01,785 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:01,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:01,785 INFO L85 PathProgramCache]: Analyzing trace with hash 2119173236, now seen corresponding path program 2 times [2024-06-28 03:40:01,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:01,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142056659] [2024-06-28 03:40:01,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:01,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:02,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:02,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:02,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142056659] [2024-06-28 03:40:02,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142056659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:02,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:02,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:02,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14153278] [2024-06-28 03:40:02,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:02,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:02,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:02,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:02,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:02,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:02,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 190 transitions, 1969 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:02,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:02,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:02,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:02,964 INFO L124 PetriNetUnfolderBase]: 521/962 cut-off events. [2024-06-28 03:40:02,964 INFO L125 PetriNetUnfolderBase]: For 62502/62502 co-relation queries the response was YES. [2024-06-28 03:40:02,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5713 conditions, 962 events. 521/962 cut-off events. For 62502/62502 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4885 event pairs, 111 based on Foata normal form. 2/963 useless extension candidates. Maximal degree in co-relation 5609. Up to 878 conditions per place. [2024-06-28 03:40:02,972 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 166 selfloop transitions, 33 changer transitions 0/201 dead transitions. [2024-06-28 03:40:02,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 201 transitions, 2403 flow [2024-06-28 03:40:02,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:02,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:02,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 03:40:02,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-28 03:40:02,973 INFO L175 Difference]: Start difference. First operand has 227 places, 190 transitions, 1969 flow. Second operand 10 states and 103 transitions. [2024-06-28 03:40:02,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 201 transitions, 2403 flow [2024-06-28 03:40:03,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 201 transitions, 2230 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:03,112 INFO L231 Difference]: Finished difference. Result has 229 places, 191 transitions, 1882 flow [2024-06-28 03:40:03,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1882, PETRI_PLACES=229, PETRI_TRANSITIONS=191} [2024-06-28 03:40:03,113 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-28 03:40:03,113 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 191 transitions, 1882 flow [2024-06-28 03:40:03,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:03,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:03,113 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 03:40:03,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:40:03,114 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:03,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:03,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1121989046, now seen corresponding path program 14 times [2024-06-28 03:40:03,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:03,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712479199] [2024-06-28 03:40:03,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:03,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:03,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:03,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712479199] [2024-06-28 03:40:03,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712479199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:03,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:03,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:03,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370171640] [2024-06-28 03:40:03,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:03,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:03,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:03,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:03,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:03,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:03,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 191 transitions, 1882 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:03,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:03,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:03,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:04,103 INFO L124 PetriNetUnfolderBase]: 518/957 cut-off events. [2024-06-28 03:40:04,104 INFO L125 PetriNetUnfolderBase]: For 56820/56820 co-relation queries the response was YES. [2024-06-28 03:40:04,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5415 conditions, 957 events. 518/957 cut-off events. For 56820/56820 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4851 event pairs, 82 based on Foata normal form. 2/958 useless extension candidates. Maximal degree in co-relation 5310. Up to 691 conditions per place. [2024-06-28 03:40:04,111 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 140 selfloop transitions, 62 changer transitions 0/204 dead transitions. [2024-06-28 03:40:04,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 204 transitions, 2322 flow [2024-06-28 03:40:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:04,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:04,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 03:40:04,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 03:40:04,112 INFO L175 Difference]: Start difference. First operand has 229 places, 191 transitions, 1882 flow. Second operand 9 states and 102 transitions. [2024-06-28 03:40:04,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 204 transitions, 2322 flow [2024-06-28 03:40:04,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 204 transitions, 2232 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:04,245 INFO L231 Difference]: Finished difference. Result has 230 places, 191 transitions, 1920 flow [2024-06-28 03:40:04,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1920, PETRI_PLACES=230, PETRI_TRANSITIONS=191} [2024-06-28 03:40:04,245 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-28 03:40:04,245 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 191 transitions, 1920 flow [2024-06-28 03:40:04,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:04,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:04,246 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 03:40:04,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:40:04,246 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:04,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:04,246 INFO L85 PathProgramCache]: Analyzing trace with hash 779035728, now seen corresponding path program 3 times [2024-06-28 03:40:04,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:04,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861881340] [2024-06-28 03:40:04,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:04,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:04,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:04,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861881340] [2024-06-28 03:40:04,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861881340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:04,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:04,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:04,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828343625] [2024-06-28 03:40:04,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:04,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:04,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:04,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:04,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:05,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:05,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 191 transitions, 1920 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:05,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:05,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:05,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:05,361 INFO L124 PetriNetUnfolderBase]: 522/965 cut-off events. [2024-06-28 03:40:05,362 INFO L125 PetriNetUnfolderBase]: For 58441/58441 co-relation queries the response was YES. [2024-06-28 03:40:05,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5511 conditions, 965 events. 522/965 cut-off events. For 58441/58441 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4917 event pairs, 78 based on Foata normal form. 2/966 useless extension candidates. Maximal degree in co-relation 5405. Up to 583 conditions per place. [2024-06-28 03:40:05,369 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 109 selfloop transitions, 98 changer transitions 0/209 dead transitions. [2024-06-28 03:40:05,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 209 transitions, 2396 flow [2024-06-28 03:40:05,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:40:05,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:40:05,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 03:40:05,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:40:05,370 INFO L175 Difference]: Start difference. First operand has 230 places, 191 transitions, 1920 flow. Second operand 12 states and 132 transitions. [2024-06-28 03:40:05,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 209 transitions, 2396 flow [2024-06-28 03:40:05,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 209 transitions, 2261 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:05,519 INFO L231 Difference]: Finished difference. Result has 234 places, 192 transitions, 2003 flow [2024-06-28 03:40:05,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1785, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2003, PETRI_PLACES=234, PETRI_TRANSITIONS=192} [2024-06-28 03:40:05,520 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-28 03:40:05,520 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 192 transitions, 2003 flow [2024-06-28 03:40:05,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:05,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:05,520 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 03:40:05,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:40:05,520 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:05,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:05,521 INFO L85 PathProgramCache]: Analyzing trace with hash 779391918, now seen corresponding path program 4 times [2024-06-28 03:40:05,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:05,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238397576] [2024-06-28 03:40:05,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:05,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:06,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:06,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:06,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238397576] [2024-06-28 03:40:06,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238397576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:06,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:06,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:06,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430588894] [2024-06-28 03:40:06,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:06,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:06,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:06,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:06,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:06,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:06,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 192 transitions, 2003 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:06,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:06,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:06,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:06,777 INFO L124 PetriNetUnfolderBase]: 526/973 cut-off events. [2024-06-28 03:40:06,777 INFO L125 PetriNetUnfolderBase]: For 60056/60056 co-relation queries the response was YES. [2024-06-28 03:40:06,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5674 conditions, 973 events. 526/973 cut-off events. For 60056/60056 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4989 event pairs, 104 based on Foata normal form. 2/974 useless extension candidates. Maximal degree in co-relation 5567. Up to 854 conditions per place. [2024-06-28 03:40:06,785 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 159 selfloop transitions, 45 changer transitions 0/206 dead transitions. [2024-06-28 03:40:06,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 206 transitions, 2457 flow [2024-06-28 03:40:06,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:40:06,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:40:06,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 127 transitions. [2024-06-28 03:40:06,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315136476426799 [2024-06-28 03:40:06,786 INFO L175 Difference]: Start difference. First operand has 234 places, 192 transitions, 2003 flow. Second operand 13 states and 127 transitions. [2024-06-28 03:40:06,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 206 transitions, 2457 flow [2024-06-28 03:40:06,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 206 transitions, 2239 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 03:40:06,925 INFO L231 Difference]: Finished difference. Result has 236 places, 193 transitions, 1899 flow [2024-06-28 03:40:06,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1785, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1899, PETRI_PLACES=236, PETRI_TRANSITIONS=193} [2024-06-28 03:40:06,926 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-28 03:40:06,926 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 193 transitions, 1899 flow [2024-06-28 03:40:06,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:06,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:06,926 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 03:40:06,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:40:06,926 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:06,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:06,927 INFO L85 PathProgramCache]: Analyzing trace with hash 483807848, now seen corresponding path program 2 times [2024-06-28 03:40:06,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:06,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925322819] [2024-06-28 03:40:06,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:06,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:07,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:07,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:07,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925322819] [2024-06-28 03:40:07,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925322819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:07,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:07,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:07,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787059652] [2024-06-28 03:40:07,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:07,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:07,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:07,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:07,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:07,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:07,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 193 transitions, 1899 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:07,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:07,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:07,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:08,102 INFO L124 PetriNetUnfolderBase]: 532/983 cut-off events. [2024-06-28 03:40:08,102 INFO L125 PetriNetUnfolderBase]: For 61222/61222 co-relation queries the response was YES. [2024-06-28 03:40:08,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5575 conditions, 983 events. 532/983 cut-off events. For 61222/61222 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5045 event pairs, 80 based on Foata normal form. 2/984 useless extension candidates. Maximal degree in co-relation 5468. Up to 540 conditions per place. [2024-06-28 03:40:08,110 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 113 selfloop transitions, 98 changer transitions 0/213 dead transitions. [2024-06-28 03:40:08,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 213 transitions, 2553 flow [2024-06-28 03:40:08,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:08,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:08,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 03:40:08,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:40:08,111 INFO L175 Difference]: Start difference. First operand has 236 places, 193 transitions, 1899 flow. Second operand 11 states and 132 transitions. [2024-06-28 03:40:08,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 213 transitions, 2553 flow [2024-06-28 03:40:08,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 213 transitions, 2449 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 03:40:08,260 INFO L231 Difference]: Finished difference. Result has 236 places, 195 transitions, 2022 flow [2024-06-28 03:40:08,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1795, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2022, PETRI_PLACES=236, PETRI_TRANSITIONS=195} [2024-06-28 03:40:08,261 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-28 03:40:08,261 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 195 transitions, 2022 flow [2024-06-28 03:40:08,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:08,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:08,261 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 03:40:08,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:40:08,261 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:08,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:08,262 INFO L85 PathProgramCache]: Analyzing trace with hash -266726906, now seen corresponding path program 5 times [2024-06-28 03:40:08,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:08,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399548760] [2024-06-28 03:40:08,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:08,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:09,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:09,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:09,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399548760] [2024-06-28 03:40:09,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399548760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:09,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:09,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:09,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308728483] [2024-06-28 03:40:09,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:09,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:09,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:09,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:09,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:09,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:09,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 195 transitions, 2022 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:09,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:09,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:09,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:09,416 INFO L124 PetriNetUnfolderBase]: 529/978 cut-off events. [2024-06-28 03:40:09,417 INFO L125 PetriNetUnfolderBase]: For 57060/57060 co-relation queries the response was YES. [2024-06-28 03:40:09,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5528 conditions, 978 events. 529/978 cut-off events. For 57060/57060 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5012 event pairs, 113 based on Foata normal form. 2/979 useless extension candidates. Maximal degree in co-relation 5420. Up to 894 conditions per place. [2024-06-28 03:40:09,425 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 169 selfloop transitions, 35 changer transitions 0/206 dead transitions. [2024-06-28 03:40:09,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 206 transitions, 2454 flow [2024-06-28 03:40:09,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:09,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:09,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-28 03:40:09,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-28 03:40:09,426 INFO L175 Difference]: Start difference. First operand has 236 places, 195 transitions, 2022 flow. Second operand 11 states and 112 transitions. [2024-06-28 03:40:09,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 206 transitions, 2454 flow [2024-06-28 03:40:09,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 206 transitions, 2244 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:09,582 INFO L231 Difference]: Finished difference. Result has 238 places, 195 transitions, 1886 flow [2024-06-28 03:40:09,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1812, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1886, PETRI_PLACES=238, PETRI_TRANSITIONS=195} [2024-06-28 03:40:09,582 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-28 03:40:09,582 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 195 transitions, 1886 flow [2024-06-28 03:40:09,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:09,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:09,583 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 03:40:09,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:40:09,583 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:09,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:09,583 INFO L85 PathProgramCache]: Analyzing trace with hash -266966226, now seen corresponding path program 3 times [2024-06-28 03:40:09,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:09,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508032426] [2024-06-28 03:40:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:09,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:10,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:10,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508032426] [2024-06-28 03:40:10,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508032426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:10,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:10,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:10,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553567585] [2024-06-28 03:40:10,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:10,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:10,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:10,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:10,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:10,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:10,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 195 transitions, 1886 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:10,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:10,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:10,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:10,793 INFO L124 PetriNetUnfolderBase]: 525/972 cut-off events. [2024-06-28 03:40:10,793 INFO L125 PetriNetUnfolderBase]: For 51771/51771 co-relation queries the response was YES. [2024-06-28 03:40:10,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5172 conditions, 972 events. 525/972 cut-off events. For 51771/51771 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4994 event pairs, 79 based on Foata normal form. 2/973 useless extension candidates. Maximal degree in co-relation 5063. Up to 532 conditions per place. [2024-06-28 03:40:10,800 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 108 selfloop transitions, 102 changer transitions 0/212 dead transitions. [2024-06-28 03:40:10,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 212 transitions, 2356 flow [2024-06-28 03:40:10,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:10,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:10,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 03:40:10,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 03:40:10,802 INFO L175 Difference]: Start difference. First operand has 238 places, 195 transitions, 1886 flow. Second operand 11 states and 130 transitions. [2024-06-28 03:40:10,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 212 transitions, 2356 flow [2024-06-28 03:40:10,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 212 transitions, 2203 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-28 03:40:10,986 INFO L231 Difference]: Finished difference. Result has 239 places, 195 transitions, 1942 flow [2024-06-28 03:40:10,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1733, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1942, PETRI_PLACES=239, PETRI_TRANSITIONS=195} [2024-06-28 03:40:10,987 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-28 03:40:10,987 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 195 transitions, 1942 flow [2024-06-28 03:40:10,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:10,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:10,987 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 03:40:10,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:40:10,987 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:10,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:10,988 INFO L85 PathProgramCache]: Analyzing trace with hash -626239476, now seen corresponding path program 15 times [2024-06-28 03:40:10,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:10,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475580083] [2024-06-28 03:40:10,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:10,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:11,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:11,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:11,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475580083] [2024-06-28 03:40:11,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475580083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:11,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:11,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:11,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16339532] [2024-06-28 03:40:11,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:11,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:11,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:11,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:11,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:11,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:11,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 195 transitions, 1942 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:11,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:11,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:11,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:11,946 INFO L124 PetriNetUnfolderBase]: 522/967 cut-off events. [2024-06-28 03:40:11,946 INFO L125 PetriNetUnfolderBase]: For 46775/46775 co-relation queries the response was YES. [2024-06-28 03:40:11,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5047 conditions, 967 events. 522/967 cut-off events. For 46775/46775 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4966 event pairs, 86 based on Foata normal form. 2/968 useless extension candidates. Maximal degree in co-relation 4938. Up to 854 conditions per place. [2024-06-28 03:40:11,953 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 180 selfloop transitions, 32 changer transitions 0/214 dead transitions. [2024-06-28 03:40:11,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 214 transitions, 2435 flow [2024-06-28 03:40:11,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:11,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:11,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:40:11,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-28 03:40:11,955 INFO L175 Difference]: Start difference. First operand has 239 places, 195 transitions, 1942 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:40:11,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 214 transitions, 2435 flow [2024-06-28 03:40:12,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 214 transitions, 2175 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:40:12,113 INFO L231 Difference]: Finished difference. Result has 237 places, 195 transitions, 1754 flow [2024-06-28 03:40:12,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1754, PETRI_PLACES=237, PETRI_TRANSITIONS=195} [2024-06-28 03:40:12,113 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-28 03:40:12,113 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 195 transitions, 1754 flow [2024-06-28 03:40:12,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:12,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:12,114 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 03:40:12,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:40:12,114 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:12,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:12,115 INFO L85 PathProgramCache]: Analyzing trace with hash -983332290, now seen corresponding path program 1 times [2024-06-28 03:40:12,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:12,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799637364] [2024-06-28 03:40:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:12,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:12,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:12,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799637364] [2024-06-28 03:40:12,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799637364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:12,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:12,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:12,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513300407] [2024-06-28 03:40:12,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:12,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:12,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:12,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:12,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:12,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:12,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 195 transitions, 1754 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:12,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:12,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:12,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:13,210 INFO L124 PetriNetUnfolderBase]: 526/975 cut-off events. [2024-06-28 03:40:13,210 INFO L125 PetriNetUnfolderBase]: For 47688/47688 co-relation queries the response was YES. [2024-06-28 03:40:13,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4827 conditions, 975 events. 526/975 cut-off events. For 47688/47688 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5033 event pairs, 90 based on Foata normal form. 2/976 useless extension candidates. Maximal degree in co-relation 4718. Up to 861 conditions per place. [2024-06-28 03:40:13,216 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 187 selfloop transitions, 23 changer transitions 0/212 dead transitions. [2024-06-28 03:40:13,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 212 transitions, 2214 flow [2024-06-28 03:40:13,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:13,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:13,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-28 03:40:13,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3193548387096774 [2024-06-28 03:40:13,217 INFO L175 Difference]: Start difference. First operand has 237 places, 195 transitions, 1754 flow. Second operand 10 states and 99 transitions. [2024-06-28 03:40:13,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 212 transitions, 2214 flow [2024-06-28 03:40:13,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 212 transitions, 2047 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-28 03:40:13,338 INFO L231 Difference]: Finished difference. Result has 236 places, 196 transitions, 1643 flow [2024-06-28 03:40:13,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1643, PETRI_PLACES=236, PETRI_TRANSITIONS=196} [2024-06-28 03:40:13,338 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-28 03:40:13,338 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 196 transitions, 1643 flow [2024-06-28 03:40:13,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:13,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:13,339 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 03:40:13,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:40:13,339 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:13,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:13,339 INFO L85 PathProgramCache]: Analyzing trace with hash 821258310, now seen corresponding path program 2 times [2024-06-28 03:40:13,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:13,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473106543] [2024-06-28 03:40:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:13,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:14,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:14,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473106543] [2024-06-28 03:40:14,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473106543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:14,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:14,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:14,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751322578] [2024-06-28 03:40:14,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:14,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:14,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:14,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:14,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:14,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:14,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 196 transitions, 1643 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:14,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:14,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:14,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:14,438 INFO L124 PetriNetUnfolderBase]: 530/983 cut-off events. [2024-06-28 03:40:14,439 INFO L125 PetriNetUnfolderBase]: For 48402/48402 co-relation queries the response was YES. [2024-06-28 03:40:14,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4686 conditions, 983 events. 530/983 cut-off events. For 48402/48402 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5086 event pairs, 89 based on Foata normal form. 2/984 useless extension candidates. Maximal degree in co-relation 4579. Up to 823 conditions per place. [2024-06-28 03:40:14,446 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 164 selfloop transitions, 47 changer transitions 0/213 dead transitions. [2024-06-28 03:40:14,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 213 transitions, 2115 flow [2024-06-28 03:40:14,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:14,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:14,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 03:40:14,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-28 03:40:14,447 INFO L175 Difference]: Start difference. First operand has 236 places, 196 transitions, 1643 flow. Second operand 10 states and 103 transitions. [2024-06-28 03:40:14,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 213 transitions, 2115 flow [2024-06-28 03:40:14,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 213 transitions, 2069 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:14,571 INFO L231 Difference]: Finished difference. Result has 238 places, 197 transitions, 1704 flow [2024-06-28 03:40:14,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1704, PETRI_PLACES=238, PETRI_TRANSITIONS=197} [2024-06-28 03:40:14,571 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-28 03:40:14,571 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 197 transitions, 1704 flow [2024-06-28 03:40:14,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:14,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:14,572 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 03:40:14,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:40:14,572 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:14,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:14,572 INFO L85 PathProgramCache]: Analyzing trace with hash -907794604, now seen corresponding path program 3 times [2024-06-28 03:40:14,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:14,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844898240] [2024-06-28 03:40:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:14,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:15,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:15,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:15,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844898240] [2024-06-28 03:40:15,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844898240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:15,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:15,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:15,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734445104] [2024-06-28 03:40:15,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:15,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:15,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:15,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:15,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:15,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:15,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 197 transitions, 1704 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:15,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:15,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:15,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:15,791 INFO L124 PetriNetUnfolderBase]: 534/991 cut-off events. [2024-06-28 03:40:15,791 INFO L125 PetriNetUnfolderBase]: For 49561/49561 co-relation queries the response was YES. [2024-06-28 03:40:15,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4795 conditions, 991 events. 534/991 cut-off events. For 49561/49561 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5160 event pairs, 88 based on Foata normal form. 2/992 useless extension candidates. Maximal degree in co-relation 4687. Up to 803 conditions per place. [2024-06-28 03:40:15,799 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 166 selfloop transitions, 46 changer transitions 0/214 dead transitions. [2024-06-28 03:40:15,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 214 transitions, 2178 flow [2024-06-28 03:40:15,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:15,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:15,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:40:15,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-28 03:40:15,801 INFO L175 Difference]: Start difference. First operand has 238 places, 197 transitions, 1704 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:40:15,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 214 transitions, 2178 flow [2024-06-28 03:40:15,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 214 transitions, 2083 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:15,940 INFO L231 Difference]: Finished difference. Result has 240 places, 198 transitions, 1716 flow [2024-06-28 03:40:15,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1609, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1716, PETRI_PLACES=240, PETRI_TRANSITIONS=198} [2024-06-28 03:40:15,941 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-28 03:40:15,941 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 198 transitions, 1716 flow [2024-06-28 03:40:15,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:15,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:15,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:15,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:40:15,942 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:15,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:15,942 INFO L85 PathProgramCache]: Analyzing trace with hash 2067296318, now seen corresponding path program 4 times [2024-06-28 03:40:15,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:15,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671257131] [2024-06-28 03:40:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:15,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:16,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:16,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671257131] [2024-06-28 03:40:16,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671257131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:16,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:16,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:16,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787455823] [2024-06-28 03:40:16,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:16,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:16,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:16,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:16,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:16,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:16,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 198 transitions, 1716 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:16,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:16,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:16,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:17,071 INFO L124 PetriNetUnfolderBase]: 545/1012 cut-off events. [2024-06-28 03:40:17,072 INFO L125 PetriNetUnfolderBase]: For 57914/57914 co-relation queries the response was YES. [2024-06-28 03:40:17,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5064 conditions, 1012 events. 545/1012 cut-off events. For 57914/57914 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5278 event pairs, 93 based on Foata normal form. 2/1013 useless extension candidates. Maximal degree in co-relation 4955. Up to 721 conditions per place. [2024-06-28 03:40:17,078 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 172 selfloop transitions, 43 changer transitions 0/217 dead transitions. [2024-06-28 03:40:17,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 217 transitions, 2374 flow [2024-06-28 03:40:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:17,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:40:17,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:40:17,079 INFO L175 Difference]: Start difference. First operand has 240 places, 198 transitions, 1716 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:40:17,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 217 transitions, 2374 flow [2024-06-28 03:40:17,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 217 transitions, 2279 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:17,249 INFO L231 Difference]: Finished difference. Result has 242 places, 200 transitions, 1733 flow [2024-06-28 03:40:17,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1733, PETRI_PLACES=242, PETRI_TRANSITIONS=200} [2024-06-28 03:40:17,250 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-28 03:40:17,250 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 200 transitions, 1733 flow [2024-06-28 03:40:17,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:17,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:17,250 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 03:40:17,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:40:17,250 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:17,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:17,251 INFO L85 PathProgramCache]: Analyzing trace with hash 821108580, now seen corresponding path program 5 times [2024-06-28 03:40:17,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:17,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731574605] [2024-06-28 03:40:17,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:17,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:17,925 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 03:40:17,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:17,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731574605] [2024-06-28 03:40:17,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731574605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:17,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:17,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:17,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263482066] [2024-06-28 03:40:17,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:17,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:17,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:17,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:17,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:18,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:18,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 200 transitions, 1733 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:18,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:18,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:18,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:18,298 INFO L124 PetriNetUnfolderBase]: 542/1007 cut-off events. [2024-06-28 03:40:18,299 INFO L125 PetriNetUnfolderBase]: For 52122/52122 co-relation queries the response was YES. [2024-06-28 03:40:18,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4887 conditions, 1007 events. 542/1007 cut-off events. For 52122/52122 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5260 event pairs, 83 based on Foata normal form. 2/1008 useless extension candidates. Maximal degree in co-relation 4777. Up to 775 conditions per place. [2024-06-28 03:40:18,305 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 167 selfloop transitions, 47 changer transitions 0/216 dead transitions. [2024-06-28 03:40:18,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 216 transitions, 2201 flow [2024-06-28 03:40:18,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:18,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:18,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:40:18,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:40:18,306 INFO L175 Difference]: Start difference. First operand has 242 places, 200 transitions, 1733 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:40:18,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 216 transitions, 2201 flow [2024-06-28 03:40:18,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 216 transitions, 2139 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:18,431 INFO L231 Difference]: Finished difference. Result has 246 places, 200 transitions, 1770 flow [2024-06-28 03:40:18,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1770, PETRI_PLACES=246, PETRI_TRANSITIONS=200} [2024-06-28 03:40:18,432 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2024-06-28 03:40:18,432 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 200 transitions, 1770 flow [2024-06-28 03:40:18,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:18,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:18,432 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 03:40:18,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:40:18,433 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:18,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:18,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1898388056, now seen corresponding path program 6 times [2024-06-28 03:40:18,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:18,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666272243] [2024-06-28 03:40:18,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:18,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:19,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:19,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666272243] [2024-06-28 03:40:19,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666272243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:19,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:19,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:19,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037093458] [2024-06-28 03:40:19,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:19,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:19,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:19,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:19,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:19,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:19,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 200 transitions, 1770 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:19,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:19,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:19,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:19,481 INFO L124 PetriNetUnfolderBase]: 562/1051 cut-off events. [2024-06-28 03:40:19,482 INFO L125 PetriNetUnfolderBase]: For 90144/90144 co-relation queries the response was YES. [2024-06-28 03:40:19,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5100 conditions, 1051 events. 562/1051 cut-off events. For 90144/90144 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5547 event pairs, 90 based on Foata normal form. 12/1062 useless extension candidates. Maximal degree in co-relation 4988. Up to 563 conditions per place. [2024-06-28 03:40:19,488 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 110 selfloop transitions, 101 changer transitions 7/220 dead transitions. [2024-06-28 03:40:19,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 220 transitions, 2284 flow [2024-06-28 03:40:19,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:19,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:19,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 03:40:19,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:40:19,489 INFO L175 Difference]: Start difference. First operand has 246 places, 200 transitions, 1770 flow. Second operand 10 states and 120 transitions. [2024-06-28 03:40:19,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 220 transitions, 2284 flow [2024-06-28 03:40:19,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 220 transitions, 2167 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:19,621 INFO L231 Difference]: Finished difference. Result has 247 places, 198 transitions, 1854 flow [2024-06-28 03:40:19,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1653, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1854, PETRI_PLACES=247, PETRI_TRANSITIONS=198} [2024-06-28 03:40:19,622 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-28 03:40:19,622 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 198 transitions, 1854 flow [2024-06-28 03:40:19,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:19,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:19,622 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 03:40:19,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:40:19,622 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:19,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:19,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1898111350, now seen corresponding path program 1 times [2024-06-28 03:40:19,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:19,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639986864] [2024-06-28 03:40:19,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:19,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:20,162 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 03:40:20,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:20,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639986864] [2024-06-28 03:40:20,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639986864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:20,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:20,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:20,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832665448] [2024-06-28 03:40:20,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:20,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:20,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:20,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:20,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:20,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:20,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 198 transitions, 1854 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:20,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:20,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:20,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:20,528 INFO L124 PetriNetUnfolderBase]: 572/1077 cut-off events. [2024-06-28 03:40:20,529 INFO L125 PetriNetUnfolderBase]: For 107456/107456 co-relation queries the response was YES. [2024-06-28 03:40:20,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5999 conditions, 1077 events. 572/1077 cut-off events. For 107456/107456 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5675 event pairs, 94 based on Foata normal form. 8/1084 useless extension candidates. Maximal degree in co-relation 5886. Up to 525 conditions per place. [2024-06-28 03:40:20,538 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 112 selfloop transitions, 100 changer transitions 6/220 dead transitions. [2024-06-28 03:40:20,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 220 transitions, 2546 flow [2024-06-28 03:40:20,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:20,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:20,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 03:40:20,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 03:40:20,539 INFO L175 Difference]: Start difference. First operand has 247 places, 198 transitions, 1854 flow. Second operand 10 states and 121 transitions. [2024-06-28 03:40:20,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 220 transitions, 2546 flow [2024-06-28 03:40:20,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 220 transitions, 2320 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:20,741 INFO L231 Difference]: Finished difference. Result has 248 places, 197 transitions, 1825 flow [2024-06-28 03:40:20,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1628, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1825, PETRI_PLACES=248, PETRI_TRANSITIONS=197} [2024-06-28 03:40:20,741 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-06-28 03:40:20,741 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 197 transitions, 1825 flow [2024-06-28 03:40:20,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:20,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:20,742 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 03:40:20,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:40:20,742 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:20,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:20,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1859249340, now seen corresponding path program 7 times [2024-06-28 03:40:20,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:20,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497672296] [2024-06-28 03:40:20,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:20,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:21,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:21,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497672296] [2024-06-28 03:40:21,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497672296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:21,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:21,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:21,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237434593] [2024-06-28 03:40:21,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:21,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:21,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:21,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:21,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:21,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:21,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 197 transitions, 1825 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:21,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:21,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:21,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:21,959 INFO L124 PetriNetUnfolderBase]: 560/1053 cut-off events. [2024-06-28 03:40:21,960 INFO L125 PetriNetUnfolderBase]: For 86894/86894 co-relation queries the response was YES. [2024-06-28 03:40:21,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5916 conditions, 1053 events. 560/1053 cut-off events. For 86894/86894 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5538 event pairs, 96 based on Foata normal form. 2/1054 useless extension candidates. Maximal degree in co-relation 5802. Up to 613 conditions per place. [2024-06-28 03:40:21,968 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 116 selfloop transitions, 95 changer transitions 0/213 dead transitions. [2024-06-28 03:40:21,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 213 transitions, 2303 flow [2024-06-28 03:40:21,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:21,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:21,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 03:40:21,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 03:40:21,969 INFO L175 Difference]: Start difference. First operand has 248 places, 197 transitions, 1825 flow. Second operand 10 states and 114 transitions. [2024-06-28 03:40:21,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 213 transitions, 2303 flow [2024-06-28 03:40:22,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 213 transitions, 2101 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:22,163 INFO L231 Difference]: Finished difference. Result has 248 places, 198 transitions, 1833 flow [2024-06-28 03:40:22,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1623, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1833, PETRI_PLACES=248, PETRI_TRANSITIONS=198} [2024-06-28 03:40:22,163 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-06-28 03:40:22,163 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 198 transitions, 1833 flow [2024-06-28 03:40:22,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:22,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:22,164 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 03:40:22,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:40:22,164 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:22,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:22,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1859243760, now seen corresponding path program 8 times [2024-06-28 03:40:22,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:22,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714796340] [2024-06-28 03:40:22,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:22,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:22,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:22,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:22,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714796340] [2024-06-28 03:40:22,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714796340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:22,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:22,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:22,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596978003] [2024-06-28 03:40:22,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:22,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:22,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:22,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:22,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:22,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:22,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 198 transitions, 1833 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:22,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:22,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:22,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:23,224 INFO L124 PetriNetUnfolderBase]: 542/1015 cut-off events. [2024-06-28 03:40:23,224 INFO L125 PetriNetUnfolderBase]: For 56074/56074 co-relation queries the response was YES. [2024-06-28 03:40:23,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5106 conditions, 1015 events. 542/1015 cut-off events. For 56074/56074 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5346 event pairs, 82 based on Foata normal form. 2/1016 useless extension candidates. Maximal degree in co-relation 4992. Up to 555 conditions per place. [2024-06-28 03:40:23,232 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 115 selfloop transitions, 97 changer transitions 0/214 dead transitions. [2024-06-28 03:40:23,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 214 transitions, 2313 flow [2024-06-28 03:40:23,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:23,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:23,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 03:40:23,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:40:23,233 INFO L175 Difference]: Start difference. First operand has 248 places, 198 transitions, 1833 flow. Second operand 10 states and 115 transitions. [2024-06-28 03:40:23,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 214 transitions, 2313 flow [2024-06-28 03:40:23,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 214 transitions, 2113 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:23,382 INFO L231 Difference]: Finished difference. Result has 250 places, 199 transitions, 1849 flow [2024-06-28 03:40:23,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1633, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1849, PETRI_PLACES=250, PETRI_TRANSITIONS=199} [2024-06-28 03:40:23,382 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-28 03:40:23,382 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 199 transitions, 1849 flow [2024-06-28 03:40:23,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:23,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:23,383 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 03:40:23,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:40:23,383 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:23,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:23,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1659947550, now seen corresponding path program 9 times [2024-06-28 03:40:23,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:23,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065973037] [2024-06-28 03:40:23,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:23,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:24,048 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 03:40:24,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:24,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065973037] [2024-06-28 03:40:24,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065973037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:24,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:24,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:24,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911005167] [2024-06-28 03:40:24,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:24,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:24,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:24,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:24,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:24,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:24,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 199 transitions, 1849 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:24,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:24,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:24,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:24,477 INFO L124 PetriNetUnfolderBase]: 546/1023 cut-off events. [2024-06-28 03:40:24,477 INFO L125 PetriNetUnfolderBase]: For 57383/57383 co-relation queries the response was YES. [2024-06-28 03:40:24,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5163 conditions, 1023 events. 546/1023 cut-off events. For 57383/57383 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5382 event pairs, 86 based on Foata normal form. 2/1024 useless extension candidates. Maximal degree in co-relation 5048. Up to 583 conditions per place. [2024-06-28 03:40:24,494 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 121 selfloop transitions, 92 changer transitions 0/215 dead transitions. [2024-06-28 03:40:24,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 215 transitions, 2335 flow [2024-06-28 03:40:24,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:24,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:24,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 03:40:24,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 03:40:24,495 INFO L175 Difference]: Start difference. First operand has 250 places, 199 transitions, 1849 flow. Second operand 10 states and 114 transitions. [2024-06-28 03:40:24,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 215 transitions, 2335 flow [2024-06-28 03:40:24,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 215 transitions, 2129 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:24,650 INFO L231 Difference]: Finished difference. Result has 252 places, 200 transitions, 1851 flow [2024-06-28 03:40:24,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1851, PETRI_PLACES=252, PETRI_TRANSITIONS=200} [2024-06-28 03:40:24,650 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-28 03:40:24,650 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 200 transitions, 1851 flow [2024-06-28 03:40:24,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:24,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:24,651 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 03:40:24,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:40:24,651 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:24,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:24,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1536599922, now seen corresponding path program 10 times [2024-06-28 03:40:24,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:24,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902103253] [2024-06-28 03:40:24,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:24,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:25,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:25,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902103253] [2024-06-28 03:40:25,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902103253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:25,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:25,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:25,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017068871] [2024-06-28 03:40:25,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:25,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:25,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:25,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:25,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:25,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:25,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 200 transitions, 1851 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:25,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:25,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:25,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:25,699 INFO L124 PetriNetUnfolderBase]: 550/1031 cut-off events. [2024-06-28 03:40:25,699 INFO L125 PetriNetUnfolderBase]: For 58678/58678 co-relation queries the response was YES. [2024-06-28 03:40:25,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5188 conditions, 1031 events. 550/1031 cut-off events. For 58678/58678 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5459 event pairs, 86 based on Foata normal form. 2/1032 useless extension candidates. Maximal degree in co-relation 5072. Up to 577 conditions per place. [2024-06-28 03:40:25,708 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 121 selfloop transitions, 93 changer transitions 0/216 dead transitions. [2024-06-28 03:40:25,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 216 transitions, 2339 flow [2024-06-28 03:40:25,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:25,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 03:40:25,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:40:25,709 INFO L175 Difference]: Start difference. First operand has 252 places, 200 transitions, 1851 flow. Second operand 10 states and 115 transitions. [2024-06-28 03:40:25,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 216 transitions, 2339 flow [2024-06-28 03:40:25,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 216 transitions, 2141 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:25,874 INFO L231 Difference]: Finished difference. Result has 254 places, 201 transitions, 1865 flow [2024-06-28 03:40:25,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1653, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1865, PETRI_PLACES=254, PETRI_TRANSITIONS=201} [2024-06-28 03:40:25,875 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-28 03:40:25,875 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 201 transitions, 1865 flow [2024-06-28 03:40:25,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:25,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:25,875 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 03:40:25,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:40:25,875 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:25,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:25,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1006765822, now seen corresponding path program 11 times [2024-06-28 03:40:25,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:25,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901380604] [2024-06-28 03:40:25,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:25,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:26,709 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 03:40:26,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:26,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901380604] [2024-06-28 03:40:26,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901380604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:26,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:26,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:26,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547533845] [2024-06-28 03:40:26,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:26,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:26,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:26,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:26,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:26,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:26,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 201 transitions, 1865 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:26,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:26,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:26,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:27,095 INFO L124 PetriNetUnfolderBase]: 554/1039 cut-off events. [2024-06-28 03:40:27,095 INFO L125 PetriNetUnfolderBase]: For 60044/60044 co-relation queries the response was YES. [2024-06-28 03:40:27,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5241 conditions, 1039 events. 554/1039 cut-off events. For 60044/60044 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5517 event pairs, 90 based on Foata normal form. 2/1040 useless extension candidates. Maximal degree in co-relation 5124. Up to 537 conditions per place. [2024-06-28 03:40:27,104 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 118 selfloop transitions, 97 changer transitions 0/217 dead transitions. [2024-06-28 03:40:27,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 217 transitions, 2355 flow [2024-06-28 03:40:27,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:27,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:27,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 03:40:27,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:40:27,105 INFO L175 Difference]: Start difference. First operand has 254 places, 201 transitions, 1865 flow. Second operand 10 states and 115 transitions. [2024-06-28 03:40:27,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 217 transitions, 2355 flow [2024-06-28 03:40:27,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 217 transitions, 2153 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:27,237 INFO L231 Difference]: Finished difference. Result has 256 places, 202 transitions, 1885 flow [2024-06-28 03:40:27,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1885, PETRI_PLACES=256, PETRI_TRANSITIONS=202} [2024-06-28 03:40:27,237 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-28 03:40:27,237 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 202 transitions, 1885 flow [2024-06-28 03:40:27,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:27,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:27,238 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 03:40:27,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:40:27,238 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:27,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:27,238 INFO L85 PathProgramCache]: Analyzing trace with hash -2003424126, now seen corresponding path program 12 times [2024-06-28 03:40:27,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:27,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009480467] [2024-06-28 03:40:27,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:27,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:28,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:28,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009480467] [2024-06-28 03:40:28,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009480467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:28,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:28,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:28,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732350698] [2024-06-28 03:40:28,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:28,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:28,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:28,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:28,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:28,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:28,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 202 transitions, 1885 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:28,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:28,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:28,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:28,500 INFO L124 PetriNetUnfolderBase]: 558/1047 cut-off events. [2024-06-28 03:40:28,501 INFO L125 PetriNetUnfolderBase]: For 61566/61566 co-relation queries the response was YES. [2024-06-28 03:40:28,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5308 conditions, 1047 events. 558/1047 cut-off events. For 61566/61566 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5590 event pairs, 95 based on Foata normal form. 2/1048 useless extension candidates. Maximal degree in co-relation 5190. Up to 607 conditions per place. [2024-06-28 03:40:28,510 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 119 selfloop transitions, 98 changer transitions 0/219 dead transitions. [2024-06-28 03:40:28,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 219 transitions, 2390 flow [2024-06-28 03:40:28,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:28,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 03:40:28,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:40:28,529 INFO L175 Difference]: Start difference. First operand has 256 places, 202 transitions, 1885 flow. Second operand 11 states and 121 transitions. [2024-06-28 03:40:28,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 219 transitions, 2390 flow [2024-06-28 03:40:28,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 219 transitions, 2178 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:28,677 INFO L231 Difference]: Finished difference. Result has 259 places, 203 transitions, 1899 flow [2024-06-28 03:40:28,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1673, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1899, PETRI_PLACES=259, PETRI_TRANSITIONS=203} [2024-06-28 03:40:28,678 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-28 03:40:28,678 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 203 transitions, 1899 flow [2024-06-28 03:40:28,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:28,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:28,678 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 03:40:28,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:40:28,679 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:28,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:28,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1761559340, now seen corresponding path program 13 times [2024-06-28 03:40:28,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:28,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308109411] [2024-06-28 03:40:28,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:28,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:29,429 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 03:40:29,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:29,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308109411] [2024-06-28 03:40:29,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308109411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:29,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:29,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:29,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661960992] [2024-06-28 03:40:29,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:29,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:29,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:29,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:29,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:29,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:29,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 203 transitions, 1899 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:29,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:29,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:29,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:29,840 INFO L124 PetriNetUnfolderBase]: 562/1055 cut-off events. [2024-06-28 03:40:29,840 INFO L125 PetriNetUnfolderBase]: For 62872/62872 co-relation queries the response was YES. [2024-06-28 03:40:29,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5355 conditions, 1055 events. 562/1055 cut-off events. For 62872/62872 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5656 event pairs, 97 based on Foata normal form. 2/1056 useless extension candidates. Maximal degree in co-relation 5236. Up to 601 conditions per place. [2024-06-28 03:40:29,850 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 119 selfloop transitions, 99 changer transitions 0/220 dead transitions. [2024-06-28 03:40:29,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 220 transitions, 2406 flow [2024-06-28 03:40:29,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:29,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:29,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:40:29,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 03:40:29,851 INFO L175 Difference]: Start difference. First operand has 259 places, 203 transitions, 1899 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:40:29,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 220 transitions, 2406 flow [2024-06-28 03:40:30,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 220 transitions, 2190 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:30,011 INFO L231 Difference]: Finished difference. Result has 261 places, 204 transitions, 1913 flow [2024-06-28 03:40:30,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1683, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1913, PETRI_PLACES=261, PETRI_TRANSITIONS=204} [2024-06-28 03:40:30,011 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-28 03:40:30,011 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 204 transitions, 1913 flow [2024-06-28 03:40:30,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:30,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:30,012 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 03:40:30,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:40:30,012 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:30,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:30,012 INFO L85 PathProgramCache]: Analyzing trace with hash 662989786, now seen corresponding path program 14 times [2024-06-28 03:40:30,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:30,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362914717] [2024-06-28 03:40:30,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:30,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:30,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:30,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:30,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362914717] [2024-06-28 03:40:30,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362914717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:30,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:30,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:30,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490160483] [2024-06-28 03:40:30,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:30,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:30,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:30,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:30,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:30,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:30,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 204 transitions, 1913 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:30,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:30,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:30,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:31,189 INFO L124 PetriNetUnfolderBase]: 566/1063 cut-off events. [2024-06-28 03:40:31,189 INFO L125 PetriNetUnfolderBase]: For 64287/64287 co-relation queries the response was YES. [2024-06-28 03:40:31,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5408 conditions, 1063 events. 566/1063 cut-off events. For 64287/64287 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5713 event pairs, 100 based on Foata normal form. 2/1064 useless extension candidates. Maximal degree in co-relation 5288. Up to 587 conditions per place. [2024-06-28 03:40:31,201 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 121 selfloop transitions, 97 changer transitions 0/220 dead transitions. [2024-06-28 03:40:31,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 220 transitions, 2415 flow [2024-06-28 03:40:31,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:31,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 03:40:31,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 03:40:31,202 INFO L175 Difference]: Start difference. First operand has 261 places, 204 transitions, 1913 flow. Second operand 10 states and 114 transitions. [2024-06-28 03:40:31,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 220 transitions, 2415 flow [2024-06-28 03:40:31,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 220 transitions, 2195 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:31,373 INFO L231 Difference]: Finished difference. Result has 262 places, 205 transitions, 1921 flow [2024-06-28 03:40:31,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1693, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1921, PETRI_PLACES=262, PETRI_TRANSITIONS=205} [2024-06-28 03:40:31,374 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-28 03:40:31,374 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 205 transitions, 1921 flow [2024-06-28 03:40:31,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:31,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:31,374 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 03:40:31,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:40:31,375 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:31,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:31,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1189393116, now seen corresponding path program 15 times [2024-06-28 03:40:31,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:31,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166305269] [2024-06-28 03:40:31,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:32,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:32,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:32,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166305269] [2024-06-28 03:40:32,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166305269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:32,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:32,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:32,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422184399] [2024-06-28 03:40:32,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:32,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:32,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:32,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:32,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:32,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:32,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 205 transitions, 1921 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:32,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:32,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:32,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:32,593 INFO L124 PetriNetUnfolderBase]: 599/1130 cut-off events. [2024-06-28 03:40:32,593 INFO L125 PetriNetUnfolderBase]: For 110780/110780 co-relation queries the response was YES. [2024-06-28 03:40:32,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6575 conditions, 1130 events. 599/1130 cut-off events. For 110780/110780 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6097 event pairs, 121 based on Foata normal form. 2/1131 useless extension candidates. Maximal degree in co-relation 6454. Up to 400 conditions per place. [2024-06-28 03:40:32,601 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 120 selfloop transitions, 104 changer transitions 0/226 dead transitions. [2024-06-28 03:40:32,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 226 transitions, 2651 flow [2024-06-28 03:40:32,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:32,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 03:40:32,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-28 03:40:32,602 INFO L175 Difference]: Start difference. First operand has 262 places, 205 transitions, 1921 flow. Second operand 10 states and 118 transitions. [2024-06-28 03:40:32,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 226 transitions, 2651 flow [2024-06-28 03:40:32,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 226 transitions, 2433 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:32,894 INFO L231 Difference]: Finished difference. Result has 264 places, 206 transitions, 1945 flow [2024-06-28 03:40:32,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1945, PETRI_PLACES=264, PETRI_TRANSITIONS=206} [2024-06-28 03:40:32,895 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-28 03:40:32,895 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 206 transitions, 1945 flow [2024-06-28 03:40:32,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:32,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:32,895 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 03:40:32,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:40:32,895 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:32,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:32,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1933671104, now seen corresponding path program 16 times [2024-06-28 03:40:32,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:32,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924921032] [2024-06-28 03:40:32,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:32,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:33,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:33,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924921032] [2024-06-28 03:40:33,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924921032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:33,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:33,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:40:33,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497520569] [2024-06-28 03:40:33,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:33,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:40:33,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:33,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:40:33,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:40:33,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:33,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 206 transitions, 1945 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:33,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:33,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:33,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:34,130 INFO L124 PetriNetUnfolderBase]: 619/1174 cut-off events. [2024-06-28 03:40:34,131 INFO L125 PetriNetUnfolderBase]: For 159042/159042 co-relation queries the response was YES. [2024-06-28 03:40:34,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6764 conditions, 1174 events. 619/1174 cut-off events. For 159042/159042 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6374 event pairs, 106 based on Foata normal form. 12/1185 useless extension candidates. Maximal degree in co-relation 6642. Up to 692 conditions per place. [2024-06-28 03:40:34,142 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 118 selfloop transitions, 102 changer transitions 8/230 dead transitions. [2024-06-28 03:40:34,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 230 transitions, 2509 flow [2024-06-28 03:40:34,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:40:34,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:40:34,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 03:40:34,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-28 03:40:34,143 INFO L175 Difference]: Start difference. First operand has 264 places, 206 transitions, 1945 flow. Second operand 12 states and 139 transitions. [2024-06-28 03:40:34,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 230 transitions, 2509 flow [2024-06-28 03:40:34,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 230 transitions, 2297 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:34,486 INFO L231 Difference]: Finished difference. Result has 268 places, 203 transitions, 1949 flow [2024-06-28 03:40:34,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1949, PETRI_PLACES=268, PETRI_TRANSITIONS=203} [2024-06-28 03:40:34,487 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-28 03:40:34,487 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 203 transitions, 1949 flow [2024-06-28 03:40:34,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:34,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:34,487 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 03:40:34,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:40:34,487 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:34,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:34,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1619695168, now seen corresponding path program 2 times [2024-06-28 03:40:34,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:34,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513229354] [2024-06-28 03:40:34,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:34,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:35,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:35,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513229354] [2024-06-28 03:40:35,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513229354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:35,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:35,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:35,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371404140] [2024-06-28 03:40:35,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:35,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:35,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:35,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:35,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:35,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:35,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 203 transitions, 1949 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:35,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:35,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:35,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:35,595 INFO L124 PetriNetUnfolderBase]: 620/1185 cut-off events. [2024-06-28 03:40:35,606 INFO L125 PetriNetUnfolderBase]: For 170171/170171 co-relation queries the response was YES. [2024-06-28 03:40:35,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7329 conditions, 1185 events. 620/1185 cut-off events. For 170171/170171 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6478 event pairs, 118 based on Foata normal form. 8/1192 useless extension candidates. Maximal degree in co-relation 7207. Up to 668 conditions per place. [2024-06-28 03:40:35,617 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 119 selfloop transitions, 94 changer transitions 11/226 dead transitions. [2024-06-28 03:40:35,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 226 transitions, 2665 flow [2024-06-28 03:40:35,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:35,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:35,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 03:40:35,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:40:35,618 INFO L175 Difference]: Start difference. First operand has 268 places, 203 transitions, 1949 flow. Second operand 11 states and 132 transitions. [2024-06-28 03:40:35,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 226 transitions, 2665 flow [2024-06-28 03:40:36,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 226 transitions, 2434 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-28 03:40:36,048 INFO L231 Difference]: Finished difference. Result has 268 places, 197 transitions, 1871 flow [2024-06-28 03:40:36,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1871, PETRI_PLACES=268, PETRI_TRANSITIONS=197} [2024-06-28 03:40:36,050 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-28 03:40:36,050 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 197 transitions, 1871 flow [2024-06-28 03:40:36,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:36,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:36,051 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 03:40:36,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:40:36,051 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:36,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:36,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2105999718, now seen corresponding path program 17 times [2024-06-28 03:40:36,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:36,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028771669] [2024-06-28 03:40:36,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:36,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:36,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:36,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:36,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028771669] [2024-06-28 03:40:36,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028771669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:36,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:36,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:36,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169567808] [2024-06-28 03:40:36,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:36,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:36,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:36,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:36,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:36,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:36,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 197 transitions, 1871 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:36,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:36,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:36,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:37,193 INFO L124 PetriNetUnfolderBase]: 598/1139 cut-off events. [2024-06-28 03:40:37,194 INFO L125 PetriNetUnfolderBase]: For 146072/146072 co-relation queries the response was YES. [2024-06-28 03:40:37,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7194 conditions, 1139 events. 598/1139 cut-off events. For 146072/146072 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6122 event pairs, 132 based on Foata normal form. 2/1140 useless extension candidates. Maximal degree in co-relation 7071. Up to 713 conditions per place. [2024-06-28 03:40:37,206 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 124 selfloop transitions, 87 changer transitions 0/213 dead transitions. [2024-06-28 03:40:37,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 213 transitions, 2366 flow [2024-06-28 03:40:37,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:37,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:37,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 03:40:37,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-28 03:40:37,208 INFO L175 Difference]: Start difference. First operand has 268 places, 197 transitions, 1871 flow. Second operand 10 states and 118 transitions. [2024-06-28 03:40:37,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 213 transitions, 2366 flow [2024-06-28 03:40:37,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 213 transitions, 2171 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:40:37,616 INFO L231 Difference]: Finished difference. Result has 261 places, 198 transitions, 1887 flow [2024-06-28 03:40:37,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1676, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1887, PETRI_PLACES=261, PETRI_TRANSITIONS=198} [2024-06-28 03:40:37,617 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-28 03:40:37,617 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 198 transitions, 1887 flow [2024-06-28 03:40:37,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:37,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:37,617 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 03:40:37,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:40:37,617 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:37,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:37,618 INFO L85 PathProgramCache]: Analyzing trace with hash 222477406, now seen corresponding path program 18 times [2024-06-28 03:40:37,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:37,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300352820] [2024-06-28 03:40:37,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:37,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:38,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:38,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:38,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300352820] [2024-06-28 03:40:38,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300352820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:38,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:38,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:38,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081437484] [2024-06-28 03:40:38,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:38,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:38,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:38,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:38,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:38,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:38,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 198 transitions, 1887 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:38,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:38,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:38,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:38,701 INFO L124 PetriNetUnfolderBase]: 602/1147 cut-off events. [2024-06-28 03:40:38,701 INFO L125 PetriNetUnfolderBase]: For 138062/138062 co-relation queries the response was YES. [2024-06-28 03:40:38,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7163 conditions, 1147 events. 602/1147 cut-off events. For 138062/138062 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6179 event pairs, 132 based on Foata normal form. 2/1148 useless extension candidates. Maximal degree in co-relation 7043. Up to 571 conditions per place. [2024-06-28 03:40:38,711 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 126 selfloop transitions, 91 changer transitions 0/219 dead transitions. [2024-06-28 03:40:38,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 219 transitions, 2608 flow [2024-06-28 03:40:38,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:38,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 03:40:38,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:40:38,712 INFO L175 Difference]: Start difference. First operand has 261 places, 198 transitions, 1887 flow. Second operand 10 states and 124 transitions. [2024-06-28 03:40:38,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 219 transitions, 2608 flow [2024-06-28 03:40:39,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 219 transitions, 2408 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:39,067 INFO L231 Difference]: Finished difference. Result has 263 places, 199 transitions, 1906 flow [2024-06-28 03:40:39,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1906, PETRI_PLACES=263, PETRI_TRANSITIONS=199} [2024-06-28 03:40:39,067 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2024-06-28 03:40:39,067 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 199 transitions, 1906 flow [2024-06-28 03:40:39,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:39,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:39,068 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 03:40:39,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:40:39,068 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:39,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:39,068 INFO L85 PathProgramCache]: Analyzing trace with hash 222621556, now seen corresponding path program 19 times [2024-06-28 03:40:39,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:39,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843845916] [2024-06-28 03:40:39,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:39,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:39,797 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 03:40:39,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:39,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843845916] [2024-06-28 03:40:39,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843845916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:39,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:39,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:39,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665528863] [2024-06-28 03:40:39,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:39,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:39,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:39,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:39,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:39,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:39,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 199 transitions, 1906 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:39,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:39,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:39,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:40,225 INFO L124 PetriNetUnfolderBase]: 606/1155 cut-off events. [2024-06-28 03:40:40,225 INFO L125 PetriNetUnfolderBase]: For 141092/141092 co-relation queries the response was YES. [2024-06-28 03:40:40,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7240 conditions, 1155 events. 606/1155 cut-off events. For 141092/141092 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6244 event pairs, 132 based on Foata normal form. 2/1156 useless extension candidates. Maximal degree in co-relation 7119. Up to 715 conditions per place. [2024-06-28 03:40:40,235 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 125 selfloop transitions, 88 changer transitions 0/215 dead transitions. [2024-06-28 03:40:40,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 215 transitions, 2407 flow [2024-06-28 03:40:40,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:40,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 03:40:40,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 03:40:40,236 INFO L175 Difference]: Start difference. First operand has 263 places, 199 transitions, 1906 flow. Second operand 10 states and 119 transitions. [2024-06-28 03:40:40,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 215 transitions, 2407 flow [2024-06-28 03:40:40,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 215 transitions, 2174 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:40,593 INFO L231 Difference]: Finished difference. Result has 265 places, 200 transitions, 1890 flow [2024-06-28 03:40:40,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1675, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1890, PETRI_PLACES=265, PETRI_TRANSITIONS=200} [2024-06-28 03:40:40,594 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 235 predicate places. [2024-06-28 03:40:40,594 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 200 transitions, 1890 flow [2024-06-28 03:40:40,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:40,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:40,594 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 03:40:40,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:40:40,594 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:40,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:40,595 INFO L85 PathProgramCache]: Analyzing trace with hash 228199262, now seen corresponding path program 3 times [2024-06-28 03:40:40,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:40,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966277686] [2024-06-28 03:40:40,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:40,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:41,225 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 03:40:41,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:41,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966277686] [2024-06-28 03:40:41,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966277686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:41,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:41,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:41,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595931490] [2024-06-28 03:40:41,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:41,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:41,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:41,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:41,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:41,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:41,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 200 transitions, 1890 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:41,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:41,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:41,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:41,666 INFO L124 PetriNetUnfolderBase]: 622/1191 cut-off events. [2024-06-28 03:40:41,667 INFO L125 PetriNetUnfolderBase]: For 181017/181017 co-relation queries the response was YES. [2024-06-28 03:40:41,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7287 conditions, 1191 events. 622/1191 cut-off events. For 181017/181017 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6505 event pairs, 146 based on Foata normal form. 10/1200 useless extension candidates. Maximal degree in co-relation 7165. Up to 760 conditions per place. [2024-06-28 03:40:41,675 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 136 selfloop transitions, 71 changer transitions 10/219 dead transitions. [2024-06-28 03:40:41,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 219 transitions, 2390 flow [2024-06-28 03:40:41,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:41,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:41,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 03:40:41,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 03:40:41,676 INFO L175 Difference]: Start difference. First operand has 265 places, 200 transitions, 1890 flow. Second operand 10 states and 119 transitions. [2024-06-28 03:40:41,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 219 transitions, 2390 flow [2024-06-28 03:40:42,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 219 transitions, 2186 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:42,076 INFO L231 Difference]: Finished difference. Result has 267 places, 195 transitions, 1793 flow [2024-06-28 03:40:42,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1793, PETRI_PLACES=267, PETRI_TRANSITIONS=195} [2024-06-28 03:40:42,077 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-28 03:40:42,077 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 195 transitions, 1793 flow [2024-06-28 03:40:42,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:42,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:42,077 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 03:40:42,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:40:42,078 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:42,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash 429547982, now seen corresponding path program 4 times [2024-06-28 03:40:42,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:42,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262767599] [2024-06-28 03:40:42,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:42,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:42,648 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 03:40:42,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:42,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262767599] [2024-06-28 03:40:42,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262767599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:42,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:42,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:42,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349341301] [2024-06-28 03:40:42,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:42,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:42,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:42,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:42,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:42,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:42,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 195 transitions, 1793 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:42,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:42,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:42,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:43,009 INFO L124 PetriNetUnfolderBase]: 608/1177 cut-off events. [2024-06-28 03:40:43,009 INFO L125 PetriNetUnfolderBase]: For 193914/193914 co-relation queries the response was YES. [2024-06-28 03:40:43,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7194 conditions, 1177 events. 608/1177 cut-off events. For 193914/193914 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6474 event pairs, 146 based on Foata normal form. 12/1188 useless extension candidates. Maximal degree in co-relation 7071. Up to 725 conditions per place. [2024-06-28 03:40:43,020 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 132 selfloop transitions, 74 changer transitions 7/215 dead transitions. [2024-06-28 03:40:43,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 215 transitions, 2320 flow [2024-06-28 03:40:43,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:43,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:43,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 03:40:43,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 03:40:43,021 INFO L175 Difference]: Start difference. First operand has 267 places, 195 transitions, 1793 flow. Second operand 10 states and 121 transitions. [2024-06-28 03:40:43,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 215 transitions, 2320 flow [2024-06-28 03:40:43,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 215 transitions, 2168 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-28 03:40:43,366 INFO L231 Difference]: Finished difference. Result has 265 places, 193 transitions, 1810 flow [2024-06-28 03:40:43,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1641, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1810, PETRI_PLACES=265, PETRI_TRANSITIONS=193} [2024-06-28 03:40:43,366 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 235 predicate places. [2024-06-28 03:40:43,367 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 193 transitions, 1810 flow [2024-06-28 03:40:43,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:43,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:43,367 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 03:40:43,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:40:43,367 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:43,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:43,367 INFO L85 PathProgramCache]: Analyzing trace with hash 421928926, now seen corresponding path program 20 times [2024-06-28 03:40:43,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:43,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56070835] [2024-06-28 03:40:43,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:43,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:44,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:44,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:44,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56070835] [2024-06-28 03:40:44,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56070835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:44,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:44,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:44,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622147189] [2024-06-28 03:40:44,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:44,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:44,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:44,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:44,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:44,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:44,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 193 transitions, 1810 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:44,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:44,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:44,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:44,413 INFO L124 PetriNetUnfolderBase]: 588/1137 cut-off events. [2024-06-28 03:40:44,413 INFO L125 PetriNetUnfolderBase]: For 147004/147004 co-relation queries the response was YES. [2024-06-28 03:40:44,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7131 conditions, 1137 events. 588/1137 cut-off events. For 147004/147004 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6213 event pairs, 144 based on Foata normal form. 2/1138 useless extension candidates. Maximal degree in co-relation 7009. Up to 733 conditions per place. [2024-06-28 03:40:44,423 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 134 selfloop transitions, 73 changer transitions 0/209 dead transitions. [2024-06-28 03:40:44,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 209 transitions, 2303 flow [2024-06-28 03:40:44,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:44,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:44,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 03:40:44,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 03:40:44,424 INFO L175 Difference]: Start difference. First operand has 265 places, 193 transitions, 1810 flow. Second operand 10 states and 116 transitions. [2024-06-28 03:40:44,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 209 transitions, 2303 flow [2024-06-28 03:40:44,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 209 transitions, 2118 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:44,860 INFO L231 Difference]: Finished difference. Result has 266 places, 194 transitions, 1814 flow [2024-06-28 03:40:44,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1814, PETRI_PLACES=266, PETRI_TRANSITIONS=194} [2024-06-28 03:40:44,860 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-28 03:40:44,860 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 194 transitions, 1814 flow [2024-06-28 03:40:44,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:44,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:44,861 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 03:40:44,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:40:44,861 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:44,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:44,861 INFO L85 PathProgramCache]: Analyzing trace with hash 421923346, now seen corresponding path program 21 times [2024-06-28 03:40:44,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:44,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547857052] [2024-06-28 03:40:44,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:44,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:45,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:45,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:45,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547857052] [2024-06-28 03:40:45,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547857052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:45,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:45,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:45,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961699502] [2024-06-28 03:40:45,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:45,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:45,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:45,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:45,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:45,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:45,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 194 transitions, 1814 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:45,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:45,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:45,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:45,938 INFO L124 PetriNetUnfolderBase]: 592/1145 cut-off events. [2024-06-28 03:40:45,938 INFO L125 PetriNetUnfolderBase]: For 150176/150176 co-relation queries the response was YES. [2024-06-28 03:40:45,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7182 conditions, 1145 events. 592/1145 cut-off events. For 150176/150176 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6292 event pairs, 144 based on Foata normal form. 2/1146 useless extension candidates. Maximal degree in co-relation 7059. Up to 721 conditions per place. [2024-06-28 03:40:45,949 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 133 selfloop transitions, 75 changer transitions 0/210 dead transitions. [2024-06-28 03:40:45,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 210 transitions, 2309 flow [2024-06-28 03:40:45,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:45,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:45,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 03:40:45,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 03:40:45,950 INFO L175 Difference]: Start difference. First operand has 266 places, 194 transitions, 1814 flow. Second operand 10 states and 117 transitions. [2024-06-28 03:40:45,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 210 transitions, 2309 flow [2024-06-28 03:40:46,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 210 transitions, 2131 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:46,366 INFO L231 Difference]: Finished difference. Result has 268 places, 195 transitions, 1831 flow [2024-06-28 03:40:46,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1831, PETRI_PLACES=268, PETRI_TRANSITIONS=195} [2024-06-28 03:40:46,366 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-28 03:40:46,366 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 195 transitions, 1831 flow [2024-06-28 03:40:46,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:46,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:46,367 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 03:40:46,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:40:46,367 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:46,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:46,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1608653278, now seen corresponding path program 5 times [2024-06-28 03:40:46,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:46,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689900122] [2024-06-28 03:40:46,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:46,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:46,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:46,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:46,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689900122] [2024-06-28 03:40:46,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689900122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:46,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:46,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:46,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975549081] [2024-06-28 03:40:46,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:46,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:46,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:46,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:46,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:47,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:47,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 195 transitions, 1831 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:47,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:47,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:47,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:47,356 INFO L124 PetriNetUnfolderBase]: 619/1206 cut-off events. [2024-06-28 03:40:47,357 INFO L125 PetriNetUnfolderBase]: For 212326/212326 co-relation queries the response was YES. [2024-06-28 03:40:47,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7921 conditions, 1206 events. 619/1206 cut-off events. For 212326/212326 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6701 event pairs, 139 based on Foata normal form. 8/1213 useless extension candidates. Maximal degree in co-relation 7797. Up to 628 conditions per place. [2024-06-28 03:40:47,368 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 118 selfloop transitions, 89 changer transitions 11/220 dead transitions. [2024-06-28 03:40:47,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 220 transitions, 2545 flow [2024-06-28 03:40:47,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:40:47,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:40:47,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 03:40:47,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-28 03:40:47,369 INFO L175 Difference]: Start difference. First operand has 268 places, 195 transitions, 1831 flow. Second operand 12 states and 137 transitions. [2024-06-28 03:40:47,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 220 transitions, 2545 flow [2024-06-28 03:40:47,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 220 transitions, 2361 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:47,952 INFO L231 Difference]: Finished difference. Result has 272 places, 191 transitions, 1803 flow [2024-06-28 03:40:47,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1803, PETRI_PLACES=272, PETRI_TRANSITIONS=191} [2024-06-28 03:40:47,953 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-28 03:40:47,953 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 191 transitions, 1803 flow [2024-06-28 03:40:47,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:47,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:47,953 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 03:40:47,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:40:47,953 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:47,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:47,954 INFO L85 PathProgramCache]: Analyzing trace with hash 429557282, now seen corresponding path program 6 times [2024-06-28 03:40:47,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:47,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986500146] [2024-06-28 03:40:47,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:47,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:48,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:48,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:48,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986500146] [2024-06-28 03:40:48,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986500146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:48,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:48,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:48,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638901191] [2024-06-28 03:40:48,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:48,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:48,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:48,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:48,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:48,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:48,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 191 transitions, 1803 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:48,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:48,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:48,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:48,852 INFO L124 PetriNetUnfolderBase]: 620/1209 cut-off events. [2024-06-28 03:40:48,853 INFO L125 PetriNetUnfolderBase]: For 246329/246329 co-relation queries the response was YES. [2024-06-28 03:40:48,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8528 conditions, 1209 events. 620/1209 cut-off events. For 246329/246329 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6682 event pairs, 162 based on Foata normal form. 8/1216 useless extension candidates. Maximal degree in co-relation 8403. Up to 716 conditions per place. [2024-06-28 03:40:48,863 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 132 selfloop transitions, 70 changer transitions 8/212 dead transitions. [2024-06-28 03:40:48,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 212 transitions, 2493 flow [2024-06-28 03:40:48,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:48,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:48,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 03:40:48,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 03:40:48,864 INFO L175 Difference]: Start difference. First operand has 272 places, 191 transitions, 1803 flow. Second operand 10 states and 119 transitions. [2024-06-28 03:40:48,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 212 transitions, 2493 flow [2024-06-28 03:40:49,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 212 transitions, 2310 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:40:49,434 INFO L231 Difference]: Finished difference. Result has 266 places, 188 transitions, 1749 flow [2024-06-28 03:40:49,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1626, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1749, PETRI_PLACES=266, PETRI_TRANSITIONS=188} [2024-06-28 03:40:49,435 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-28 03:40:49,435 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 188 transitions, 1749 flow [2024-06-28 03:40:49,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:49,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:49,435 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 03:40:49,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:40:49,435 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:49,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:49,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2113134814, now seen corresponding path program 22 times [2024-06-28 03:40:49,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:49,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508317500] [2024-06-28 03:40:49,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:49,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:50,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:50,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:50,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508317500] [2024-06-28 03:40:50,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508317500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:50,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:50,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:40:50,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139315072] [2024-06-28 03:40:50,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:50,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:40:50,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:50,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:40:50,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:40:50,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:50,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 188 transitions, 1749 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:50,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:50,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:50,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:50,568 INFO L124 PetriNetUnfolderBase]: 592/1153 cut-off events. [2024-06-28 03:40:50,568 INFO L125 PetriNetUnfolderBase]: For 208349/208349 co-relation queries the response was YES. [2024-06-28 03:40:50,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7310 conditions, 1153 events. 592/1153 cut-off events. For 208349/208349 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6304 event pairs, 133 based on Foata normal form. 12/1164 useless extension candidates. Maximal degree in co-relation 7187. Up to 716 conditions per place. [2024-06-28 03:40:50,578 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 118 selfloop transitions, 83 changer transitions 7/210 dead transitions. [2024-06-28 03:40:50,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 210 transitions, 2278 flow [2024-06-28 03:40:50,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:50,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:50,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:40:50,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 03:40:50,579 INFO L175 Difference]: Start difference. First operand has 266 places, 188 transitions, 1749 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:40:50,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 210 transitions, 2278 flow [2024-06-28 03:40:50,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 210 transitions, 2135 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:40:50,989 INFO L231 Difference]: Finished difference. Result has 264 places, 186 transitions, 1799 flow [2024-06-28 03:40:50,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1799, PETRI_PLACES=264, PETRI_TRANSITIONS=186} [2024-06-28 03:40:50,989 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-28 03:40:50,989 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 186 transitions, 1799 flow [2024-06-28 03:40:50,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:50,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:50,989 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 03:40:50,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:40:50,990 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:50,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:50,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2113142750, now seen corresponding path program 7 times [2024-06-28 03:40:50,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:50,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713095553] [2024-06-28 03:40:50,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:50,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:51,760 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 03:40:51,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:51,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713095553] [2024-06-28 03:40:51,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713095553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:51,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:51,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:40:51,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514080905] [2024-06-28 03:40:51,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:51,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:40:51,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:51,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:40:51,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:40:51,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:51,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 186 transitions, 1799 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:51,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:51,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:51,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:52,231 INFO L124 PetriNetUnfolderBase]: 584/1141 cut-off events. [2024-06-28 03:40:52,231 INFO L125 PetriNetUnfolderBase]: For 190943/190943 co-relation queries the response was YES. [2024-06-28 03:40:52,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7262 conditions, 1141 events. 584/1141 cut-off events. For 190943/190943 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6234 event pairs, 139 based on Foata normal form. 10/1150 useless extension candidates. Maximal degree in co-relation 7141. Up to 706 conditions per place. [2024-06-28 03:40:52,240 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 114 selfloop transitions, 77 changer transitions 16/209 dead transitions. [2024-06-28 03:40:52,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 209 transitions, 2291 flow [2024-06-28 03:40:52,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:40:52,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:40:52,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 03:40:52,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 03:40:52,241 INFO L175 Difference]: Start difference. First operand has 264 places, 186 transitions, 1799 flow. Second operand 12 states and 135 transitions. [2024-06-28 03:40:52,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 209 transitions, 2291 flow [2024-06-28 03:40:52,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 209 transitions, 2027 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-28 03:40:52,660 INFO L231 Difference]: Finished difference. Result has 265 places, 180 transitions, 1654 flow [2024-06-28 03:40:52,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1654, PETRI_PLACES=265, PETRI_TRANSITIONS=180} [2024-06-28 03:40:52,661 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 235 predicate places. [2024-06-28 03:40:52,661 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 180 transitions, 1654 flow [2024-06-28 03:40:52,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:52,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:52,661 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 03:40:52,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:40:52,661 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:52,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:52,662 INFO L85 PathProgramCache]: Analyzing trace with hash 2113411520, now seen corresponding path program 8 times [2024-06-28 03:40:52,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:52,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472957030] [2024-06-28 03:40:52,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:52,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:53,297 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 03:40:53,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:53,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472957030] [2024-06-28 03:40:53,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472957030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:53,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:53,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:53,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880713123] [2024-06-28 03:40:53,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:53,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:53,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:53,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:53,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:53,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:53,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 180 transitions, 1654 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:53,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:53,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:53,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:53,708 INFO L124 PetriNetUnfolderBase]: 584/1149 cut-off events. [2024-06-28 03:40:53,709 INFO L125 PetriNetUnfolderBase]: For 222658/222658 co-relation queries the response was YES. [2024-06-28 03:40:53,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8037 conditions, 1149 events. 584/1149 cut-off events. For 222658/222658 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6280 event pairs, 143 based on Foata normal form. 8/1156 useless extension candidates. Maximal degree in co-relation 7915. Up to 662 conditions per place. [2024-06-28 03:40:53,719 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 118 selfloop transitions, 75 changer transitions 9/204 dead transitions. [2024-06-28 03:40:53,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 204 transitions, 2369 flow [2024-06-28 03:40:53,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:53,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:53,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 03:40:53,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 03:40:53,720 INFO L175 Difference]: Start difference. First operand has 265 places, 180 transitions, 1654 flow. Second operand 11 states and 125 transitions. [2024-06-28 03:40:53,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 204 transitions, 2369 flow [2024-06-28 03:40:54,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 204 transitions, 2148 flow, removed 12 selfloop flow, removed 13 redundant places. [2024-06-28 03:40:54,102 INFO L231 Difference]: Finished difference. Result has 257 places, 176 transitions, 1575 flow [2024-06-28 03:40:54,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1575, PETRI_PLACES=257, PETRI_TRANSITIONS=176} [2024-06-28 03:40:54,103 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-28 03:40:54,103 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 176 transitions, 1575 flow [2024-06-28 03:40:54,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:54,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:54,103 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 03:40:54,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:40:54,103 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:54,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:54,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2105783164, now seen corresponding path program 23 times [2024-06-28 03:40:54,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:54,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429763003] [2024-06-28 03:40:54,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:54,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:54,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:54,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429763003] [2024-06-28 03:40:54,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429763003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:54,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:54,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:54,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532711342] [2024-06-28 03:40:54,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:54,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:54,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:54,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:54,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:54,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:54,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 176 transitions, 1575 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:54,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:54,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:54,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:55,216 INFO L124 PetriNetUnfolderBase]: 561/1100 cut-off events. [2024-06-28 03:40:55,217 INFO L125 PetriNetUnfolderBase]: For 173432/173432 co-relation queries the response was YES. [2024-06-28 03:40:55,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7440 conditions, 1100 events. 561/1100 cut-off events. For 173432/173432 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5924 event pairs, 142 based on Foata normal form. 2/1101 useless extension candidates. Maximal degree in co-relation 7322. Up to 731 conditions per place. [2024-06-28 03:40:55,227 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 113 selfloop transitions, 79 changer transitions 0/194 dead transitions. [2024-06-28 03:40:55,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 194 transitions, 2046 flow [2024-06-28 03:40:55,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:55,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:55,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 03:40:55,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 03:40:55,228 INFO L175 Difference]: Start difference. First operand has 257 places, 176 transitions, 1575 flow. Second operand 11 states and 119 transitions. [2024-06-28 03:40:55,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 194 transitions, 2046 flow [2024-06-28 03:40:55,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 194 transitions, 1891 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:40:55,628 INFO L231 Difference]: Finished difference. Result has 252 places, 177 transitions, 1623 flow [2024-06-28 03:40:55,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1623, PETRI_PLACES=252, PETRI_TRANSITIONS=177} [2024-06-28 03:40:55,628 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-28 03:40:55,629 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 177 transitions, 1623 flow [2024-06-28 03:40:55,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:55,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:55,629 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 03:40:55,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:40:55,629 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:55,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:55,629 INFO L85 PathProgramCache]: Analyzing trace with hash 313767610, now seen corresponding path program 24 times [2024-06-28 03:40:55,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:55,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599994062] [2024-06-28 03:40:55,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:55,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:56,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:56,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599994062] [2024-06-28 03:40:56,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599994062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:56,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:56,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:40:56,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645521924] [2024-06-28 03:40:56,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:56,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:40:56,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:56,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:40:56,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:40:56,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:56,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 177 transitions, 1623 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:56,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:56,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:56,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:56,840 INFO L124 PetriNetUnfolderBase]: 558/1095 cut-off events. [2024-06-28 03:40:56,840 INFO L125 PetriNetUnfolderBase]: For 154544/154544 co-relation queries the response was YES. [2024-06-28 03:40:56,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7127 conditions, 1095 events. 558/1095 cut-off events. For 154544/154544 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5922 event pairs, 136 based on Foata normal form. 2/1096 useless extension candidates. Maximal degree in co-relation 7012. Up to 706 conditions per place. [2024-06-28 03:40:56,849 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 109 selfloop transitions, 84 changer transitions 0/195 dead transitions. [2024-06-28 03:40:56,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 195 transitions, 2060 flow [2024-06-28 03:40:56,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:40:56,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:40:56,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 03:40:56,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 03:40:56,860 INFO L175 Difference]: Start difference. First operand has 252 places, 177 transitions, 1623 flow. Second operand 12 states and 129 transitions. [2024-06-28 03:40:56,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 195 transitions, 2060 flow [2024-06-28 03:40:57,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 195 transitions, 1844 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:57,172 INFO L231 Difference]: Finished difference. Result has 255 places, 177 transitions, 1579 flow [2024-06-28 03:40:57,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1579, PETRI_PLACES=255, PETRI_TRANSITIONS=177} [2024-06-28 03:40:57,173 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-28 03:40:57,173 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 177 transitions, 1579 flow [2024-06-28 03:40:57,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:57,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:57,173 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 03:40:57,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:40:57,173 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:57,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:57,174 INFO L85 PathProgramCache]: Analyzing trace with hash -163970532, now seen corresponding path program 9 times [2024-06-28 03:40:57,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:57,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817196480] [2024-06-28 03:40:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:57,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:57,864 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 03:40:57,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:57,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817196480] [2024-06-28 03:40:57,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817196480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:57,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:57,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:40:57,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247203706] [2024-06-28 03:40:57,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:57,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:40:57,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:57,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:40:57,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:40:57,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:57,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 177 transitions, 1579 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:57,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:57,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:57,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:58,314 INFO L124 PetriNetUnfolderBase]: 545/1072 cut-off events. [2024-06-28 03:40:58,315 INFO L125 PetriNetUnfolderBase]: For 147840/147840 co-relation queries the response was YES. [2024-06-28 03:40:58,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6070 conditions, 1072 events. 545/1072 cut-off events. For 147840/147840 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5789 event pairs, 132 based on Foata normal form. 10/1081 useless extension candidates. Maximal degree in co-relation 5954. Up to 657 conditions per place. [2024-06-28 03:40:58,323 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 106 selfloop transitions, 73 changer transitions 16/197 dead transitions. [2024-06-28 03:40:58,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 197 transitions, 2027 flow [2024-06-28 03:40:58,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:40:58,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:40:58,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 03:40:58,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-28 03:40:58,324 INFO L175 Difference]: Start difference. First operand has 255 places, 177 transitions, 1579 flow. Second operand 12 states and 127 transitions. [2024-06-28 03:40:58,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 197 transitions, 2027 flow [2024-06-28 03:40:58,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 197 transitions, 1775 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 03:40:58,578 INFO L231 Difference]: Finished difference. Result has 255 places, 170 transitions, 1433 flow [2024-06-28 03:40:58,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1327, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1433, PETRI_PLACES=255, PETRI_TRANSITIONS=170} [2024-06-28 03:40:58,579 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-28 03:40:58,579 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 170 transitions, 1433 flow [2024-06-28 03:40:58,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:58,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:58,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:58,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:40:58,579 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:58,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:58,580 INFO L85 PathProgramCache]: Analyzing trace with hash -727079443, now seen corresponding path program 1 times [2024-06-28 03:40:58,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:58,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534512867] [2024-06-28 03:40:58,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:58,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:59,118 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 03:40:59,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:59,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534512867] [2024-06-28 03:40:59,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534512867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:59,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:59,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:59,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609644401] [2024-06-28 03:40:59,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:59,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:59,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:59,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:59,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:59,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:59,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 170 transitions, 1433 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:59,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:59,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:59,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:59,375 INFO L124 PetriNetUnfolderBase]: 517/1024 cut-off events. [2024-06-28 03:40:59,375 INFO L125 PetriNetUnfolderBase]: For 133370/133370 co-relation queries the response was YES. [2024-06-28 03:40:59,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5751 conditions, 1024 events. 517/1024 cut-off events. For 133370/133370 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5462 event pairs, 140 based on Foata normal form. 6/1029 useless extension candidates. Maximal degree in co-relation 5634. Up to 886 conditions per place. [2024-06-28 03:40:59,384 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 148 selfloop transitions, 11 changer transitions 26/187 dead transitions. [2024-06-28 03:40:59,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 187 transitions, 1843 flow [2024-06-28 03:40:59,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:59,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-28 03:40:59,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3161290322580645 [2024-06-28 03:40:59,385 INFO L175 Difference]: Start difference. First operand has 255 places, 170 transitions, 1433 flow. Second operand 10 states and 98 transitions. [2024-06-28 03:40:59,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 187 transitions, 1843 flow [2024-06-28 03:40:59,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 187 transitions, 1641 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-28 03:40:59,661 INFO L231 Difference]: Finished difference. Result has 245 places, 160 transitions, 1191 flow [2024-06-28 03:40:59,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1191, PETRI_PLACES=245, PETRI_TRANSITIONS=160} [2024-06-28 03:40:59,661 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-28 03:40:59,661 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 160 transitions, 1191 flow [2024-06-28 03:40:59,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:59,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:59,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:59,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:40:59,662 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:59,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:59,662 INFO L85 PathProgramCache]: Analyzing trace with hash -623987321, now seen corresponding path program 2 times [2024-06-28 03:40:59,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:59,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959301406] [2024-06-28 03:40:59,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:59,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:00,449 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 03:41:00,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:00,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959301406] [2024-06-28 03:41:00,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959301406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:00,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:00,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:41:00,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368245304] [2024-06-28 03:41:00,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:00,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:41:00,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:00,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:41:00,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:41:00,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:00,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 160 transitions, 1191 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:00,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:00,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:00,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:00,835 INFO L124 PetriNetUnfolderBase]: 483/964 cut-off events. [2024-06-28 03:41:00,836 INFO L125 PetriNetUnfolderBase]: For 119432/119432 co-relation queries the response was YES. [2024-06-28 03:41:00,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5177 conditions, 964 events. 483/964 cut-off events. For 119432/119432 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5105 event pairs, 113 based on Foata normal form. 6/969 useless extension candidates. Maximal degree in co-relation 5064. Up to 708 conditions per place. [2024-06-28 03:41:00,843 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 125 selfloop transitions, 34 changer transitions 17/178 dead transitions. [2024-06-28 03:41:00,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 178 transitions, 1587 flow [2024-06-28 03:41:00,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:00,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 03:41:00,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-28 03:41:00,844 INFO L175 Difference]: Start difference. First operand has 245 places, 160 transitions, 1191 flow. Second operand 11 states and 109 transitions. [2024-06-28 03:41:00,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 178 transitions, 1587 flow [2024-06-28 03:41:01,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 178 transitions, 1545 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:41:01,017 INFO L231 Difference]: Finished difference. Result has 234 places, 151 transitions, 1156 flow [2024-06-28 03:41:01,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1156, PETRI_PLACES=234, PETRI_TRANSITIONS=151} [2024-06-28 03:41:01,018 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-28 03:41:01,018 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 151 transitions, 1156 flow [2024-06-28 03:41:01,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:01,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:01,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:01,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:41:01,018 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:01,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:01,019 INFO L85 PathProgramCache]: Analyzing trace with hash -426258997, now seen corresponding path program 3 times [2024-06-28 03:41:01,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:01,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769330001] [2024-06-28 03:41:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:01,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:01,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:01,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:01,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769330001] [2024-06-28 03:41:01,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769330001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:01,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:01,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:41:01,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056404507] [2024-06-28 03:41:01,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:01,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:41:01,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:01,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:41:01,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:41:01,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:01,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 151 transitions, 1156 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:01,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:01,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:01,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:02,233 INFO L124 PetriNetUnfolderBase]: 455/916 cut-off events. [2024-06-28 03:41:02,233 INFO L125 PetriNetUnfolderBase]: For 106443/106443 co-relation queries the response was YES. [2024-06-28 03:41:02,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4956 conditions, 916 events. 455/916 cut-off events. For 106443/106443 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4803 event pairs, 100 based on Foata normal form. 6/921 useless extension candidates. Maximal degree in co-relation 4850. Up to 648 conditions per place. [2024-06-28 03:41:02,239 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 123 selfloop transitions, 22 changer transitions 22/169 dead transitions. [2024-06-28 03:41:02,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 169 transitions, 1532 flow [2024-06-28 03:41:02,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:02,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:02,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 03:41:02,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-28 03:41:02,240 INFO L175 Difference]: Start difference. First operand has 234 places, 151 transitions, 1156 flow. Second operand 11 states and 109 transitions. [2024-06-28 03:41:02,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 169 transitions, 1532 flow [2024-06-28 03:41:02,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 169 transitions, 1448 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 03:41:02,405 INFO L231 Difference]: Finished difference. Result has 225 places, 139 transitions, 1038 flow [2024-06-28 03:41:02,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1038, PETRI_PLACES=225, PETRI_TRANSITIONS=139} [2024-06-28 03:41:02,406 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-28 03:41:02,406 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 139 transitions, 1038 flow [2024-06-28 03:41:02,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:02,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:02,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:02,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:41:02,406 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:02,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:02,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1923139667, now seen corresponding path program 4 times [2024-06-28 03:41:02,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:02,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322243460] [2024-06-28 03:41:02,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:02,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:03,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:03,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322243460] [2024-06-28 03:41:03,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322243460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:03,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:03,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:41:03,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072703115] [2024-06-28 03:41:03,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:03,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:41:03,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:03,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:41:03,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:41:03,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:03,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 139 transitions, 1038 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:03,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:03,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:03,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:03,586 INFO L124 PetriNetUnfolderBase]: 419/856 cut-off events. [2024-06-28 03:41:03,586 INFO L125 PetriNetUnfolderBase]: For 96579/96579 co-relation queries the response was YES. [2024-06-28 03:41:03,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4626 conditions, 856 events. 419/856 cut-off events. For 96579/96579 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4459 event pairs, 104 based on Foata normal form. 6/861 useless extension candidates. Maximal degree in co-relation 4524. Up to 644 conditions per place. [2024-06-28 03:41:03,592 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 117 selfloop transitions, 25 changer transitions 13/157 dead transitions. [2024-06-28 03:41:03,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 157 transitions, 1394 flow [2024-06-28 03:41:03,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:03,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:03,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-28 03:41:03,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-28 03:41:03,593 INFO L175 Difference]: Start difference. First operand has 225 places, 139 transitions, 1038 flow. Second operand 11 states and 106 transitions. [2024-06-28 03:41:03,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 157 transitions, 1394 flow [2024-06-28 03:41:03,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 157 transitions, 1336 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-28 03:41:03,743 INFO L231 Difference]: Finished difference. Result has 213 places, 132 transitions, 985 flow [2024-06-28 03:41:03,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=985, PETRI_PLACES=213, PETRI_TRANSITIONS=132} [2024-06-28 03:41:03,744 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-28 03:41:03,744 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 132 transitions, 985 flow [2024-06-28 03:41:03,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:03,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:03,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:03,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:41:03,744 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:03,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:03,745 INFO L85 PathProgramCache]: Analyzing trace with hash 219134477, now seen corresponding path program 5 times [2024-06-28 03:41:03,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:03,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974043483] [2024-06-28 03:41:03,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:03,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:04,568 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 03:41:04,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:04,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974043483] [2024-06-28 03:41:04,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974043483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:04,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:04,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:41:04,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252583810] [2024-06-28 03:41:04,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:04,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:41:04,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:04,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:41:04,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:41:04,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:04,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 132 transitions, 985 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:04,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:04,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:04,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:04,892 INFO L124 PetriNetUnfolderBase]: 399/824 cut-off events. [2024-06-28 03:41:04,892 INFO L125 PetriNetUnfolderBase]: For 82631/82631 co-relation queries the response was YES. [2024-06-28 03:41:04,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4394 conditions, 824 events. 399/824 cut-off events. For 82631/82631 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4286 event pairs, 106 based on Foata normal form. 6/829 useless extension candidates. Maximal degree in co-relation 4298. Up to 640 conditions per place. [2024-06-28 03:41:04,898 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 100 selfloop transitions, 5 changer transitions 43/150 dead transitions. [2024-06-28 03:41:04,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 150 transitions, 1329 flow [2024-06-28 03:41:04,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:04,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:04,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-28 03:41:04,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-28 03:41:04,899 INFO L175 Difference]: Start difference. First operand has 213 places, 132 transitions, 985 flow. Second operand 11 states and 104 transitions. [2024-06-28 03:41:04,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 150 transitions, 1329 flow [2024-06-28 03:41:05,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 150 transitions, 1273 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:41:05,039 INFO L231 Difference]: Finished difference. Result has 208 places, 106 transitions, 696 flow [2024-06-28 03:41:05,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=696, PETRI_PLACES=208, PETRI_TRANSITIONS=106} [2024-06-28 03:41:05,040 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-28 03:41:05,040 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 106 transitions, 696 flow [2024-06-28 03:41:05,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:05,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:05,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:05,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:41:05,041 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:05,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:05,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1279513727, now seen corresponding path program 6 times [2024-06-28 03:41:05,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:05,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550633019] [2024-06-28 03:41:05,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:05,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:05,879 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 03:41:05,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:05,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550633019] [2024-06-28 03:41:05,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550633019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:05,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:05,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:41:05,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741914538] [2024-06-28 03:41:05,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:05,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:41:05,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:05,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:41:05,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:41:05,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:05,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 106 transitions, 696 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:05,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:05,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:05,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:06,138 INFO L124 PetriNetUnfolderBase]: 332/681 cut-off events. [2024-06-28 03:41:06,139 INFO L125 PetriNetUnfolderBase]: For 77760/77760 co-relation queries the response was YES. [2024-06-28 03:41:06,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3697 conditions, 681 events. 332/681 cut-off events. For 77760/77760 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3357 event pairs, 91 based on Foata normal form. 6/686 useless extension candidates. Maximal degree in co-relation 3615. Up to 435 conditions per place. [2024-06-28 03:41:06,144 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 69 selfloop transitions, 40 changer transitions 11/122 dead transitions. [2024-06-28 03:41:06,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 122 transitions, 978 flow [2024-06-28 03:41:06,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:06,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 03:41:06,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-28 03:41:06,145 INFO L175 Difference]: Start difference. First operand has 208 places, 106 transitions, 696 flow. Second operand 11 states and 109 transitions. [2024-06-28 03:41:06,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 122 transitions, 978 flow [2024-06-28 03:41:06,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 122 transitions, 922 flow, removed 12 selfloop flow, removed 16 redundant places. [2024-06-28 03:41:06,239 INFO L231 Difference]: Finished difference. Result has 178 places, 103 transitions, 714 flow [2024-06-28 03:41:06,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=714, PETRI_PLACES=178, PETRI_TRANSITIONS=103} [2024-06-28 03:41:06,239 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-28 03:41:06,239 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 103 transitions, 714 flow [2024-06-28 03:41:06,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:06,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:06,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:06,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:41:06,240 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:06,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:06,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1051612577, now seen corresponding path program 7 times [2024-06-28 03:41:06,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:06,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913878606] [2024-06-28 03:41:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:06,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:07,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:07,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913878606] [2024-06-28 03:41:07,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913878606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:07,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:07,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:41:07,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118504964] [2024-06-28 03:41:07,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:07,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:41:07,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:07,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:41:07,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:41:07,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:07,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 103 transitions, 714 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:07,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:07,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:07,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:07,455 INFO L124 PetriNetUnfolderBase]: 324/665 cut-off events. [2024-06-28 03:41:07,455 INFO L125 PetriNetUnfolderBase]: For 65375/65375 co-relation queries the response was YES. [2024-06-28 03:41:07,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3535 conditions, 665 events. 324/665 cut-off events. For 65375/65375 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3246 event pairs, 91 based on Foata normal form. 6/670 useless extension candidates. Maximal degree in co-relation 3460. Up to 425 conditions per place. [2024-06-28 03:41:07,459 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 70 selfloop transitions, 36 changer transitions 11/119 dead transitions. [2024-06-28 03:41:07,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 119 transitions, 982 flow [2024-06-28 03:41:07,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:07,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:07,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-28 03:41:07,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-28 03:41:07,460 INFO L175 Difference]: Start difference. First operand has 178 places, 103 transitions, 714 flow. Second operand 11 states and 108 transitions. [2024-06-28 03:41:07,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 119 transitions, 982 flow [2024-06-28 03:41:07,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 119 transitions, 896 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:07,550 INFO L231 Difference]: Finished difference. Result has 174 places, 100 transitions, 688 flow [2024-06-28 03:41:07,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=688, PETRI_PLACES=174, PETRI_TRANSITIONS=100} [2024-06-28 03:41:07,550 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-28 03:41:07,550 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 100 transitions, 688 flow [2024-06-28 03:41:07,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:07,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:07,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:07,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:41:07,551 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:07,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:07,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1493432187, now seen corresponding path program 8 times [2024-06-28 03:41:07,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:07,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872275157] [2024-06-28 03:41:07,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:07,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:08,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:08,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872275157] [2024-06-28 03:41:08,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872275157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:08,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:08,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:08,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889242545] [2024-06-28 03:41:08,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:08,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:08,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:08,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:08,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:08,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:08,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 100 transitions, 688 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:08,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:08,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:08,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:08,672 INFO L124 PetriNetUnfolderBase]: 314/647 cut-off events. [2024-06-28 03:41:08,672 INFO L125 PetriNetUnfolderBase]: For 61553/61553 co-relation queries the response was YES. [2024-06-28 03:41:08,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3419 conditions, 647 events. 314/647 cut-off events. For 61553/61553 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3147 event pairs, 83 based on Foata normal form. 6/652 useless extension candidates. Maximal degree in co-relation 3346. Up to 359 conditions per place. [2024-06-28 03:41:08,677 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 62 selfloop transitions, 34 changer transitions 16/114 dead transitions. [2024-06-28 03:41:08,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 114 transitions, 942 flow [2024-06-28 03:41:08,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:08,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:08,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-28 03:41:08,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:41:08,678 INFO L175 Difference]: Start difference. First operand has 174 places, 100 transitions, 688 flow. Second operand 10 states and 100 transitions. [2024-06-28 03:41:08,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 114 transitions, 942 flow [2024-06-28 03:41:08,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 114 transitions, 864 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:08,749 INFO L231 Difference]: Finished difference. Result has 169 places, 90 transitions, 635 flow [2024-06-28 03:41:08,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=635, PETRI_PLACES=169, PETRI_TRANSITIONS=90} [2024-06-28 03:41:08,750 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-28 03:41:08,750 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 90 transitions, 635 flow [2024-06-28 03:41:08,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:08,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:08,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:08,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:41:08,751 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:08,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:08,751 INFO L85 PathProgramCache]: Analyzing trace with hash -389783027, now seen corresponding path program 9 times [2024-06-28 03:41:08,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:08,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095335734] [2024-06-28 03:41:08,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:08,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:09,593 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 03:41:09,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:09,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095335734] [2024-06-28 03:41:09,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095335734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:09,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:09,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:09,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100410757] [2024-06-28 03:41:09,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:09,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:09,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:09,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:09,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:09,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:09,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 90 transitions, 635 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:09,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:09,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:09,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:09,933 INFO L124 PetriNetUnfolderBase]: 267/554 cut-off events. [2024-06-28 03:41:09,933 INFO L125 PetriNetUnfolderBase]: For 46233/46233 co-relation queries the response was YES. [2024-06-28 03:41:09,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2765 conditions, 554 events. 267/554 cut-off events. For 46233/46233 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2545 event pairs, 72 based on Foata normal form. 6/559 useless extension candidates. Maximal degree in co-relation 2694. Up to 318 conditions per place. [2024-06-28 03:41:09,936 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 57 selfloop transitions, 29 changer transitions 16/104 dead transitions. [2024-06-28 03:41:09,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 104 transitions, 869 flow [2024-06-28 03:41:09,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:09,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:09,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-28 03:41:09,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3161290322580645 [2024-06-28 03:41:09,937 INFO L175 Difference]: Start difference. First operand has 169 places, 90 transitions, 635 flow. Second operand 10 states and 98 transitions. [2024-06-28 03:41:09,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 104 transitions, 869 flow [2024-06-28 03:41:09,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 104 transitions, 785 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-28 03:41:09,990 INFO L231 Difference]: Finished difference. Result has 155 places, 82 transitions, 573 flow [2024-06-28 03:41:09,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=573, PETRI_PLACES=155, PETRI_TRANSITIONS=82} [2024-06-28 03:41:09,990 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-28 03:41:09,991 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 82 transitions, 573 flow [2024-06-28 03:41:09,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:09,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:09,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:09,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:41:09,991 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:09,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:09,992 INFO L85 PathProgramCache]: Analyzing trace with hash -394424657, now seen corresponding path program 10 times [2024-06-28 03:41:09,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:09,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538026816] [2024-06-28 03:41:09,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:09,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:10,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:10,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538026816] [2024-06-28 03:41:10,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538026816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:10,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:10,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:10,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089842876] [2024-06-28 03:41:10,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:10,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:10,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:10,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:10,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:10,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:10,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 82 transitions, 573 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:10,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:10,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:10,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:10,947 INFO L124 PetriNetUnfolderBase]: 239/502 cut-off events. [2024-06-28 03:41:10,948 INFO L125 PetriNetUnfolderBase]: For 36395/36395 co-relation queries the response was YES. [2024-06-28 03:41:10,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2476 conditions, 502 events. 239/502 cut-off events. For 36395/36395 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2237 event pairs, 64 based on Foata normal form. 6/507 useless extension candidates. Maximal degree in co-relation 2412. Up to 266 conditions per place. [2024-06-28 03:41:10,950 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 49 selfloop transitions, 19 changer transitions 26/96 dead transitions. [2024-06-28 03:41:10,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 96 transitions, 791 flow [2024-06-28 03:41:10,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:10,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:10,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-28 03:41:10,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-28 03:41:10,952 INFO L175 Difference]: Start difference. First operand has 155 places, 82 transitions, 573 flow. Second operand 10 states and 97 transitions. [2024-06-28 03:41:10,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 96 transitions, 791 flow [2024-06-28 03:41:10,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 96 transitions, 719 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-28 03:41:10,996 INFO L231 Difference]: Finished difference. Result has 143 places, 67 transitions, 463 flow [2024-06-28 03:41:10,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=463, PETRI_PLACES=143, PETRI_TRANSITIONS=67} [2024-06-28 03:41:10,997 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-28 03:41:10,997 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 67 transitions, 463 flow [2024-06-28 03:41:10,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:10,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:10,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:10,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:41:10,998 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:10,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:10,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1032974315, now seen corresponding path program 11 times [2024-06-28 03:41:10,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:10,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284547706] [2024-06-28 03:41:10,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:10,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:11,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:11,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:11,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284547706] [2024-06-28 03:41:11,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284547706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:11,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:11,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:41:11,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546511635] [2024-06-28 03:41:11,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:11,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:41:11,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:11,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:41:11,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:41:11,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:11,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 67 transitions, 463 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:11,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:11,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:11,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:12,036 INFO L124 PetriNetUnfolderBase]: 190/415 cut-off events. [2024-06-28 03:41:12,036 INFO L125 PetriNetUnfolderBase]: For 28853/28853 co-relation queries the response was YES. [2024-06-28 03:41:12,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2082 conditions, 415 events. 190/415 cut-off events. For 28853/28853 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1782 event pairs, 31 based on Foata normal form. 6/420 useless extension candidates. Maximal degree in co-relation 2024. Up to 132 conditions per place. [2024-06-28 03:41:12,038 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 31 selfloop transitions, 24 changer transitions 25/82 dead transitions. [2024-06-28 03:41:12,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 82 transitions, 655 flow [2024-06-28 03:41:12,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:12,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:12,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-28 03:41:12,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-28 03:41:12,039 INFO L175 Difference]: Start difference. First operand has 143 places, 67 transitions, 463 flow. Second operand 11 states and 100 transitions. [2024-06-28 03:41:12,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 82 transitions, 655 flow [2024-06-28 03:41:12,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 82 transitions, 586 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-28 03:41:12,070 INFO L231 Difference]: Finished difference. Result has 127 places, 52 transitions, 353 flow [2024-06-28 03:41:12,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=353, PETRI_PLACES=127, PETRI_TRANSITIONS=52} [2024-06-28 03:41:12,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-28 03:41:12,071 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 52 transitions, 353 flow [2024-06-28 03:41:12,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:12,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:12,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:12,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:41:12,071 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:12,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:12,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1688492057, now seen corresponding path program 12 times [2024-06-28 03:41:12,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:12,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830767165] [2024-06-28 03:41:12,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:12,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:12,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:12,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:12,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830767165] [2024-06-28 03:41:12,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830767165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:12,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:12,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:12,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290438172] [2024-06-28 03:41:12,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:12,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:12,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:12,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:12,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:12,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:12,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 52 transitions, 353 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:12,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:12,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:12,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:13,143 INFO L124 PetriNetUnfolderBase]: 137/296 cut-off events. [2024-06-28 03:41:13,143 INFO L125 PetriNetUnfolderBase]: For 15125/15125 co-relation queries the response was YES. [2024-06-28 03:41:13,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1367 conditions, 296 events. 137/296 cut-off events. For 15125/15125 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1159 event pairs, 36 based on Foata normal form. 6/302 useless extension candidates. Maximal degree in co-relation 1317. Up to 157 conditions per place. [2024-06-28 03:41:13,145 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 32 selfloop transitions, 13 changer transitions 18/65 dead transitions. [2024-06-28 03:41:13,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 65 transitions, 507 flow [2024-06-28 03:41:13,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:13,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:13,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-06-28 03:41:13,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-28 03:41:13,146 INFO L175 Difference]: Start difference. First operand has 127 places, 52 transitions, 353 flow. Second operand 10 states and 93 transitions. [2024-06-28 03:41:13,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 65 transitions, 507 flow [2024-06-28 03:41:13,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 65 transitions, 426 flow, removed 10 selfloop flow, removed 21 redundant places. [2024-06-28 03:41:13,158 INFO L231 Difference]: Finished difference. Result has 101 places, 42 transitions, 253 flow [2024-06-28 03:41:13,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=253, PETRI_PLACES=101, PETRI_TRANSITIONS=42} [2024-06-28 03:41:13,158 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-28 03:41:13,158 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 42 transitions, 253 flow [2024-06-28 03:41:13,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:13,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:13,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:13,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:41:13,159 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:13,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:13,159 INFO L85 PathProgramCache]: Analyzing trace with hash 185739239, now seen corresponding path program 13 times [2024-06-28 03:41:13,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:13,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129358620] [2024-06-28 03:41:13,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:13,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:14,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:14,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:14,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129358620] [2024-06-28 03:41:14,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129358620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:14,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:14,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:41:14,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182473797] [2024-06-28 03:41:14,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:14,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:41:14,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:14,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:41:14,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:41:14,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:14,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 42 transitions, 253 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:14,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:14,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:14,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:14,358 INFO L124 PetriNetUnfolderBase]: 93/208 cut-off events. [2024-06-28 03:41:14,358 INFO L125 PetriNetUnfolderBase]: For 6534/6534 co-relation queries the response was YES. [2024-06-28 03:41:14,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 208 events. 93/208 cut-off events. For 6534/6534 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 700 event pairs, 25 based on Foata normal form. 6/214 useless extension candidates. Maximal degree in co-relation 752. Up to 114 conditions per place. [2024-06-28 03:41:14,359 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 28 selfloop transitions, 11 changer transitions 15/56 dead transitions. [2024-06-28 03:41:14,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 56 transitions, 391 flow [2024-06-28 03:41:14,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:14,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:14,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 103 transitions. [2024-06-28 03:41:14,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2768817204301075 [2024-06-28 03:41:14,360 INFO L175 Difference]: Start difference. First operand has 101 places, 42 transitions, 253 flow. Second operand 12 states and 103 transitions. [2024-06-28 03:41:14,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 56 transitions, 391 flow [2024-06-28 03:41:14,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 56 transitions, 349 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-28 03:41:14,365 INFO L231 Difference]: Finished difference. Result has 88 places, 37 transitions, 210 flow [2024-06-28 03:41:14,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=210, PETRI_PLACES=88, PETRI_TRANSITIONS=37} [2024-06-28 03:41:14,378 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-28 03:41:14,378 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 37 transitions, 210 flow [2024-06-28 03:41:14,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:14,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:14,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:14,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:41:14,379 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:14,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:14,379 INFO L85 PathProgramCache]: Analyzing trace with hash 194723157, now seen corresponding path program 14 times [2024-06-28 03:41:14,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:14,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445516530] [2024-06-28 03:41:14,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:14,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:15,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:15,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445516530] [2024-06-28 03:41:15,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445516530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:15,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:15,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:41:15,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786617699] [2024-06-28 03:41:15,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:15,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:41:15,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:15,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:41:15,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:41:15,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:15,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 37 transitions, 210 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:15,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:15,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:15,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:15,588 INFO L124 PetriNetUnfolderBase]: 83/186 cut-off events. [2024-06-28 03:41:15,589 INFO L125 PetriNetUnfolderBase]: For 4048/4048 co-relation queries the response was YES. [2024-06-28 03:41:15,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 186 events. 83/186 cut-off events. For 4048/4048 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 580 event pairs, 21 based on Foata normal form. 6/192 useless extension candidates. Maximal degree in co-relation 640. Up to 96 conditions per place. [2024-06-28 03:41:15,589 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 26 selfloop transitions, 9 changer transitions 15/52 dead transitions. [2024-06-28 03:41:15,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 52 transitions, 342 flow [2024-06-28 03:41:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2024-06-28 03:41:15,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2873900293255132 [2024-06-28 03:41:15,590 INFO L175 Difference]: Start difference. First operand has 88 places, 37 transitions, 210 flow. Second operand 11 states and 98 transitions. [2024-06-28 03:41:15,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 52 transitions, 342 flow [2024-06-28 03:41:15,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 52 transitions, 310 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 03:41:15,594 INFO L231 Difference]: Finished difference. Result has 77 places, 32 transitions, 176 flow [2024-06-28 03:41:15,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=176, PETRI_PLACES=77, PETRI_TRANSITIONS=32} [2024-06-28 03:41:15,594 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-28 03:41:15,594 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 32 transitions, 176 flow [2024-06-28 03:41:15,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:15,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:15,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:15,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:41:15,595 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:15,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:15,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1688665037, now seen corresponding path program 15 times [2024-06-28 03:41:15,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:15,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103147557] [2024-06-28 03:41:15,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:15,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:16,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:16,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103147557] [2024-06-28 03:41:16,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103147557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:16,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:16,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:41:16,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80648550] [2024-06-28 03:41:16,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:16,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:41:16,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:16,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:41:16,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:41:16,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:16,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 32 transitions, 176 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:16,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:16,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:16,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:16,830 INFO L124 PetriNetUnfolderBase]: 70/159 cut-off events. [2024-06-28 03:41:16,830 INFO L125 PetriNetUnfolderBase]: For 2906/2906 co-relation queries the response was YES. [2024-06-28 03:41:16,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 159 events. 70/159 cut-off events. For 2906/2906 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 456 event pairs, 19 based on Foata normal form. 6/165 useless extension candidates. Maximal degree in co-relation 542. Up to 78 conditions per place. [2024-06-28 03:41:16,831 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 21 selfloop transitions, 9 changer transitions 14/46 dead transitions. [2024-06-28 03:41:16,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 46 transitions, 294 flow [2024-06-28 03:41:16,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:16,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:16,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 95 transitions. [2024-06-28 03:41:16,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2785923753665689 [2024-06-28 03:41:16,831 INFO L175 Difference]: Start difference. First operand has 77 places, 32 transitions, 176 flow. Second operand 11 states and 95 transitions. [2024-06-28 03:41:16,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 46 transitions, 294 flow [2024-06-28 03:41:16,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 46 transitions, 266 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 03:41:16,834 INFO L231 Difference]: Finished difference. Result has 69 places, 28 transitions, 151 flow [2024-06-28 03:41:16,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=151, PETRI_PLACES=69, PETRI_TRANSITIONS=28} [2024-06-28 03:41:16,834 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-28 03:41:16,834 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 28 transitions, 151 flow [2024-06-28 03:41:16,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:16,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:16,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:16,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:41:16,835 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:16,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:16,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1693133687, now seen corresponding path program 16 times [2024-06-28 03:41:16,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:16,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389128904] [2024-06-28 03:41:16,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:16,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:17,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:17,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:17,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389128904] [2024-06-28 03:41:17,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389128904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:17,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:17,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:41:17,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875688718] [2024-06-28 03:41:17,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:17,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:41:17,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:17,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:41:17,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:41:17,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:17,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 28 transitions, 151 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:17,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:17,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:17,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:17,897 INFO L124 PetriNetUnfolderBase]: 56/133 cut-off events. [2024-06-28 03:41:17,897 INFO L125 PetriNetUnfolderBase]: For 1942/1942 co-relation queries the response was YES. [2024-06-28 03:41:17,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 133 events. 56/133 cut-off events. For 1942/1942 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 341 event pairs, 6 based on Foata normal form. 6/139 useless extension candidates. Maximal degree in co-relation 448. Up to 38 conditions per place. [2024-06-28 03:41:17,898 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 18 selfloop transitions, 8 changer transitions 14/42 dead transitions. [2024-06-28 03:41:17,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 42 transitions, 261 flow [2024-06-28 03:41:17,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:17,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:17,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 98 transitions. [2024-06-28 03:41:17,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26344086021505375 [2024-06-28 03:41:17,898 INFO L175 Difference]: Start difference. First operand has 69 places, 28 transitions, 151 flow. Second operand 12 states and 98 transitions. [2024-06-28 03:41:17,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 42 transitions, 261 flow [2024-06-28 03:41:17,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 42 transitions, 235 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:17,900 INFO L231 Difference]: Finished difference. Result has 64 places, 22 transitions, 116 flow [2024-06-28 03:41:17,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=116, PETRI_PLACES=64, PETRI_TRANSITIONS=22} [2024-06-28 03:41:17,900 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2024-06-28 03:41:17,901 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 22 transitions, 116 flow [2024-06-28 03:41:17,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:17,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:17,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:17,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:41:17,901 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:17,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:17,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1555383979, now seen corresponding path program 17 times [2024-06-28 03:41:17,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:17,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212554822] [2024-06-28 03:41:17,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:17,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:18,630 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 03:41:18,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:18,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212554822] [2024-06-28 03:41:18,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212554822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:18,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:18,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:41:18,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757755495] [2024-06-28 03:41:18,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:18,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:41:18,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:18,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:41:18,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:41:18,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:18,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 22 transitions, 116 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:18,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:18,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:18,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:18,822 INFO L124 PetriNetUnfolderBase]: 24/65 cut-off events. [2024-06-28 03:41:18,822 INFO L125 PetriNetUnfolderBase]: For 680/680 co-relation queries the response was YES. [2024-06-28 03:41:18,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 65 events. 24/65 cut-off events. For 680/680 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 6/71 useless extension candidates. Maximal degree in co-relation 175. Up to 24 conditions per place. [2024-06-28 03:41:18,822 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-06-28 03:41:18,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 30 transitions, 158 flow [2024-06-28 03:41:18,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:18,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 84 transitions. [2024-06-28 03:41:18,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24633431085043989 [2024-06-28 03:41:18,823 INFO L175 Difference]: Start difference. First operand has 64 places, 22 transitions, 116 flow. Second operand 11 states and 84 transitions. [2024-06-28 03:41:18,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 30 transitions, 158 flow [2024-06-28 03:41:18,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 30 transitions, 122 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-06-28 03:41:18,825 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-06-28 03:41:18,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2024-06-28 03:41:18,825 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-28 03:41:18,825 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-06-28 03:41:18,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:18,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 03:41:18,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 03:41:18,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 03:41:18,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 03:41:18,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:41:18,843 INFO L445 BasicCegarLoop]: Path program histogram: [24, 17, 15, 11, 9, 7, 6, 6, 5, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:18,846 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 03:41:18,846 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 03:41:18,850 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 03:41:18,850 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 03:41:18,850 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 03:41:18 BasicIcfg [2024-06-28 03:41:18,851 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 03:41:18,851 INFO L158 Benchmark]: Toolchain (without parser) took 146891.54ms. Allocated memory was 163.6MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 102.4MB in the beginning and 908.4MB in the end (delta: -806.0MB). Peak memory consumption was 352.7MB. Max. memory is 16.1GB. [2024-06-28 03:41:18,851 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 163.6MB. Free memory is still 129.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:41:18,851 INFO L158 Benchmark]: Witness Parser took 0.57ms. Allocated memory is still 163.6MB. Free memory is still 107.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:41:18,851 INFO L158 Benchmark]: CACSL2BoogieTranslator took 576.26ms. Allocated memory is still 163.6MB. Free memory was 102.0MB in the beginning and 69.2MB in the end (delta: 32.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-28 03:41:18,852 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.75ms. Allocated memory is still 163.6MB. Free memory was 69.2MB in the beginning and 66.0MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 03:41:18,852 INFO L158 Benchmark]: Boogie Preprocessor took 33.65ms. Allocated memory is still 163.6MB. Free memory was 66.0MB in the beginning and 62.5MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 03:41:18,852 INFO L158 Benchmark]: RCFGBuilder took 517.29ms. Allocated memory is still 163.6MB. Free memory was 62.5MB in the beginning and 100.2MB in the end (delta: -37.7MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2024-06-28 03:41:18,862 INFO L158 Benchmark]: TraceAbstraction took 145703.54ms. Allocated memory was 163.6MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 99.0MB in the beginning and 908.4MB in the end (delta: -809.3MB). Peak memory consumption was 347.1MB. Max. memory is 16.1GB. [2024-06-28 03:41:18,863 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 163.6MB. Free memory is still 129.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.57ms. Allocated memory is still 163.6MB. Free memory is still 107.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 576.26ms. Allocated memory is still 163.6MB. Free memory was 102.0MB in the beginning and 69.2MB in the end (delta: 32.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.75ms. Allocated memory is still 163.6MB. Free memory was 69.2MB in the beginning and 66.0MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.65ms. Allocated memory is still 163.6MB. Free memory was 66.0MB in the beginning and 62.5MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 517.29ms. Allocated memory is still 163.6MB. Free memory was 62.5MB in the beginning and 100.2MB in the end (delta: -37.7MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * TraceAbstraction took 145703.54ms. Allocated memory was 163.6MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 99.0MB in the beginning and 908.4MB in the end (delta: -809.3MB). Peak memory consumption was 347.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 803]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 804]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 145.6s, OverallIterations: 135, TraceHistogramMax: 1, PathProgramHistogramMax: 24, EmptinessCheckTime: 0.0s, AutomataDifference: 59.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7865 SdHoareTripleChecker+Valid, 24.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6623 mSDsluCounter, 7500 SdHoareTripleChecker+Invalid, 20.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6628 mSDsCounter, 1655 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41440 IncrementalHoareTripleChecker+Invalid, 43095 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1655 mSolverCounterUnsat, 872 mSDtfsCounter, 41440 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1386 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3045 ImplicationChecksByTransitivity, 35.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2094occurred in iteration=65, InterpolantAutomatonStates: 1257, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 84.7s InterpolantComputationTime, 2193 NumberOfCodeBlocks, 2193 NumberOfCodeBlocksAsserted, 135 NumberOfCheckSat, 2058 ConstructedInterpolants, 0 QuantifiedInterpolants, 93329 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 135 InterpolantComputations, 135 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 03:41:18,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE