./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:32:13,659 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:32:13,719 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:32:13,722 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:32:13,723 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:32:13,740 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:32:13,740 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:32:13,741 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:32:13,741 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:32:13,744 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:32:13,744 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:32:13,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:32:13,745 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:32:13,747 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:32:13,747 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:32:13,747 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:32:13,747 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:32:13,747 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:32:13,748 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:32:13,748 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:32:13,748 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:32:13,748 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:32:13,749 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:32:13,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:32:13,749 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:32:13,749 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:32:13,750 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:32:13,750 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:32:13,750 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:32:13,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:32:13,751 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:32:13,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:32:13,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:32:13,752 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:32:13,752 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:32:13,752 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:32:13,752 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:32:13,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:32:13,753 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:32:13,753 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:32:13,753 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:32:13,753 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:32:13,754 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:32:13,754 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:32:13,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:32:13,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:32:13,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:32:13,990 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:32:13,991 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:32:13,992 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 22:32:15,082 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:32:15,280 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:32:15,280 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 22:32:15,291 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94cdeb10b/ac86ffe0171a4030abd5ac4a5927dc77/FLAG660d6b655 [2024-06-27 22:32:15,303 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94cdeb10b/ac86ffe0171a4030abd5ac4a5927dc77 [2024-06-27 22:32:15,305 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:32:15,306 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:32:15,307 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 22:32:15,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:32:15,363 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:32:15,364 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:32:15,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:32:15,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:32:15,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:32:15" (1/2) ... [2024-06-27 22:32:15,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5219571e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:15, skipping insertion in model container [2024-06-27 22:32:15,369 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:32:15" (1/2) ... [2024-06-27 22:32:15,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@467b860e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:15, skipping insertion in model container [2024-06-27 22:32:15,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:32:15" (2/2) ... [2024-06-27 22:32:15,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5219571e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:15, skipping insertion in model container [2024-06-27 22:32:15,373 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:32:15" (2/2) ... [2024-06-27 22:32:15,373 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:32:15,400 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:32:15,401 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] ! multithreaded || ((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:32:15,401 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] ! multithreaded || ((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:32:15,401 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] ! multithreaded || ((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:32:15,402 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:32:15,402 INFO L106 edCorrectnessWitness]: ghost_update [L834-L834] multithreaded = 1; [2024-06-27 22:32:15,438 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:32:15,619 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i[974,987] [2024-06-27 22:32:15,806 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:32:15,814 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:32:15,855 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i[974,987] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:32:15,931 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:32:15,960 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:32:15,961 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:15 WrapperNode [2024-06-27 22:32:15,961 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:32:15,962 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:32:15,962 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:32:15,962 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:32:15,968 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 27.06 10:32:15" (1/1) ... [2024-06-27 22:32:15,995 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 27.06 10:32:15" (1/1) ... [2024-06-27 22:32:16,036 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 162 [2024-06-27 22:32:16,036 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:32:16,037 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:32:16,037 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:32:16,037 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:32:16,056 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:15" (1/1) ... [2024-06-27 22:32:16,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:15" (1/1) ... [2024-06-27 22:32:16,059 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:15" (1/1) ... [2024-06-27 22:32:16,079 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]. [2024-06-27 22:32:16,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:15" (1/1) ... [2024-06-27 22:32:16,079 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:15" (1/1) ... [2024-06-27 22:32:16,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:15" (1/1) ... [2024-06-27 22:32:16,095 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:15" (1/1) ... [2024-06-27 22:32:16,097 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:15" (1/1) ... [2024-06-27 22:32:16,098 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:15" (1/1) ... [2024-06-27 22:32:16,101 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:32:16,112 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:32:16,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:32:16,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:32:16,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:15" (1/1) ... [2024-06-27 22:32:16,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:32:16,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:32:16,151 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) [2024-06-27 22:32:16,190 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 [2024-06-27 22:32:16,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:32:16,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:32:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:32:16,204 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:32:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:32:16,204 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:32:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:32:16,204 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:32:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:32:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:32:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:32:16,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:32:16,207 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:32:16,325 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:32:16,327 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:32:16,619 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:32:16,621 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:32:16,776 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:32:16,776 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:32:16,776 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:32:16 BoogieIcfgContainer [2024-06-27 22:32:16,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:32:16,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:32:16,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:32:16,781 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:32:16,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:32:15" (1/4) ... [2024-06-27 22:32:16,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21212740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:32:16, skipping insertion in model container [2024-06-27 22:32:16,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:32:15" (2/4) ... [2024-06-27 22:32:16,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21212740 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:32:16, skipping insertion in model container [2024-06-27 22:32:16,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:15" (3/4) ... [2024-06-27 22:32:16,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21212740 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:32:16, skipping insertion in model container [2024-06-27 22:32:16,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:32:16" (4/4) ... [2024-06-27 22:32:16,786 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 22:32:16,815 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:32:16,815 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:32:16,815 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:32:16,853 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:32:16,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:32:16,915 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 22:32:16,915 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:32:16,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-27 22:32:16,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:32:16,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-27 22:32:16,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:32:16,933 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;@433af422, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:32:16,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:32:16,935 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:32:16,935 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:32:16,936 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:32:16,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:16,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:32:16,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:16,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:16,947 INFO L85 PathProgramCache]: Analyzing trace with hash 386369729, now seen corresponding path program 1 times [2024-06-27 22:32:16,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:16,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939663010] [2024-06-27 22:32:16,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:16,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:17,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:17,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939663010] [2024-06-27 22:32:17,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939663010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:17,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:17,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:32:17,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254481918] [2024-06-27 22:32:17,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:17,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:32:17,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:17,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:32:17,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:32:17,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:32:17,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:17,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:17,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:32:17,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:18,050 INFO L124 PetriNetUnfolderBase]: 1824/2961 cut-off events. [2024-06-27 22:32:18,050 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-06-27 22:32:18,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5712 conditions, 2961 events. 1824/2961 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 17997 event pairs, 969 based on Foata normal form. 96/2863 useless extension candidates. Maximal degree in co-relation 5700. Up to 2677 conditions per place. [2024-06-27 22:32:18,066 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 39 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-06-27 22:32:18,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 215 flow [2024-06-27 22:32:18,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:32:18,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:32:18,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-27 22:32:18,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7246376811594203 [2024-06-27 22:32:18,076 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 100 transitions. [2024-06-27 22:32:18,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 215 flow [2024-06-27 22:32:18,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 210 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:18,083 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 122 flow [2024-06-27 22:32:18,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-27 22:32:18,087 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-27 22:32:18,087 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 122 flow [2024-06-27 22:32:18,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:18,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:18,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:18,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:32:18,089 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:18,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:18,090 INFO L85 PathProgramCache]: Analyzing trace with hash -170750702, now seen corresponding path program 1 times [2024-06-27 22:32:18,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:18,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557090281] [2024-06-27 22:32:18,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:18,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:18,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:18,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:18,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557090281] [2024-06-27 22:32:18,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557090281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:18,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:18,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:32:18,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765729673] [2024-06-27 22:32:18,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:18,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:32:18,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:18,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:32:18,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:32:18,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 22:32:18,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:18,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:18,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 22:32:18,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:18,823 INFO L124 PetriNetUnfolderBase]: 2211/3576 cut-off events. [2024-06-27 22:32:18,824 INFO L125 PetriNetUnfolderBase]: For 467/472 co-relation queries the response was YES. [2024-06-27 22:32:18,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7747 conditions, 3576 events. 2211/3576 cut-off events. For 467/472 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 21634 event pairs, 567 based on Foata normal form. 13/3422 useless extension candidates. Maximal degree in co-relation 7735. Up to 3124 conditions per place. [2024-06-27 22:32:18,843 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 51 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2024-06-27 22:32:18,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 70 transitions, 294 flow [2024-06-27 22:32:18,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:32:18,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:32:18,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-06-27 22:32:18,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6793478260869565 [2024-06-27 22:32:18,849 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 122 flow. Second operand 4 states and 125 transitions. [2024-06-27 22:32:18,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 70 transitions, 294 flow [2024-06-27 22:32:18,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 70 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:18,856 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 147 flow [2024-06-27 22:32:18,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-27 22:32:18,858 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-06-27 22:32:18,858 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 147 flow [2024-06-27 22:32:18,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:18,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:18,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:18,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:32:18,862 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:18,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:18,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1433860479, now seen corresponding path program 1 times [2024-06-27 22:32:18,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:18,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874826551] [2024-06-27 22:32:18,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:18,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:19,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:19,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:19,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874826551] [2024-06-27 22:32:19,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874826551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:19,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:19,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:32:19,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914113987] [2024-06-27 22:32:19,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:19,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:32:19,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:19,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:32:19,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:32:19,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:32:19,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 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) [2024-06-27 22:32:19,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:19,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:32:19,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:19,381 INFO L124 PetriNetUnfolderBase]: 1723/2960 cut-off events. [2024-06-27 22:32:19,381 INFO L125 PetriNetUnfolderBase]: For 1138/1138 co-relation queries the response was YES. [2024-06-27 22:32:19,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6804 conditions, 2960 events. 1723/2960 cut-off events. For 1138/1138 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 19077 event pairs, 1145 based on Foata normal form. 2/2747 useless extension candidates. Maximal degree in co-relation 6790. Up to 2522 conditions per place. [2024-06-27 22:32:19,392 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 44 selfloop transitions, 9 changer transitions 0/67 dead transitions. [2024-06-27 22:32:19,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 320 flow [2024-06-27 22:32:19,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:32:19,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:32:19,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-06-27 22:32:19,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2024-06-27 22:32:19,394 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 147 flow. Second operand 4 states and 118 transitions. [2024-06-27 22:32:19,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 320 flow [2024-06-27 22:32:19,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 67 transitions, 302 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:19,396 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 210 flow [2024-06-27 22:32:19,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-06-27 22:32:19,397 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-06-27 22:32:19,397 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 210 flow [2024-06-27 22:32:19,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 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) [2024-06-27 22:32:19,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:19,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:19,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:32:19,398 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:19,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:19,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1500001168, now seen corresponding path program 1 times [2024-06-27 22:32:19,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:19,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599752356] [2024-06-27 22:32:19,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:19,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:19,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:19,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:19,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599752356] [2024-06-27 22:32:19,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599752356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:19,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:19,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:32:19,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402479159] [2024-06-27 22:32:19,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:19,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:32:19,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:19,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:32:19,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:32:20,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 22:32:20,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:20,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:20,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 22:32:20,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:20,377 INFO L124 PetriNetUnfolderBase]: 1750/3013 cut-off events. [2024-06-27 22:32:20,377 INFO L125 PetriNetUnfolderBase]: For 2194/2194 co-relation queries the response was YES. [2024-06-27 22:32:20,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7540 conditions, 3013 events. 1750/3013 cut-off events. For 2194/2194 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 19395 event pairs, 1171 based on Foata normal form. 6/2813 useless extension candidates. Maximal degree in co-relation 7524. Up to 2498 conditions per place. [2024-06-27 22:32:20,392 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 55 selfloop transitions, 11 changer transitions 1/81 dead transitions. [2024-06-27 22:32:20,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 81 transitions, 420 flow [2024-06-27 22:32:20,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:32:20,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:32:20,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-06-27 22:32:20,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6478260869565218 [2024-06-27 22:32:20,396 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 210 flow. Second operand 5 states and 149 transitions. [2024-06-27 22:32:20,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 81 transitions, 420 flow [2024-06-27 22:32:20,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 81 transitions, 414 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-27 22:32:20,400 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 252 flow [2024-06-27 22:32:20,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-06-27 22:32:20,402 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2024-06-27 22:32:20,402 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 252 flow [2024-06-27 22:32:20,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:20,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:20,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:20,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:32:20,403 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:20,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:20,403 INFO L85 PathProgramCache]: Analyzing trace with hash 661835874, now seen corresponding path program 1 times [2024-06-27 22:32:20,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:20,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064506701] [2024-06-27 22:32:20,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:20,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:20,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:20,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064506701] [2024-06-27 22:32:20,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064506701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:20,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:20,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:20,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514327195] [2024-06-27 22:32:20,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:20,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:20,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:20,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:20,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:20,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 22:32:20,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:20,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:20,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 22:32:20,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:21,105 INFO L124 PetriNetUnfolderBase]: 2292/3807 cut-off events. [2024-06-27 22:32:21,105 INFO L125 PetriNetUnfolderBase]: For 4077/4092 co-relation queries the response was YES. [2024-06-27 22:32:21,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10171 conditions, 3807 events. 2292/3807 cut-off events. For 4077/4092 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 23909 event pairs, 748 based on Foata normal form. 14/3602 useless extension candidates. Maximal degree in co-relation 10152. Up to 3211 conditions per place. [2024-06-27 22:32:21,121 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 62 selfloop transitions, 19 changer transitions 1/95 dead transitions. [2024-06-27 22:32:21,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 95 transitions, 522 flow [2024-06-27 22:32:21,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:32:21,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:32:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-06-27 22:32:21,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6608695652173913 [2024-06-27 22:32:21,123 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 252 flow. Second operand 5 states and 152 transitions. [2024-06-27 22:32:21,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 95 transitions, 522 flow [2024-06-27 22:32:21,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 95 transitions, 498 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:21,128 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 337 flow [2024-06-27 22:32:21,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=337, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2024-06-27 22:32:21,129 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-06-27 22:32:21,129 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 337 flow [2024-06-27 22:32:21,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:21,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:21,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:21,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:32:21,130 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:21,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:21,131 INFO L85 PathProgramCache]: Analyzing trace with hash 670000344, now seen corresponding path program 2 times [2024-06-27 22:32:21,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:21,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297365719] [2024-06-27 22:32:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:21,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:21,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:21,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:21,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297365719] [2024-06-27 22:32:21,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297365719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:21,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:21,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:21,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275602086] [2024-06-27 22:32:21,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:21,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:21,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:21,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:21,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:21,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 22:32:21,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 337 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:21,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:21,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 22:32:21,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:21,765 INFO L124 PetriNetUnfolderBase]: 2375/3984 cut-off events. [2024-06-27 22:32:21,765 INFO L125 PetriNetUnfolderBase]: For 6329/6331 co-relation queries the response was YES. [2024-06-27 22:32:21,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11959 conditions, 3984 events. 2375/3984 cut-off events. For 6329/6331 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 25085 event pairs, 845 based on Foata normal form. 2/3736 useless extension candidates. Maximal degree in co-relation 11938. Up to 3213 conditions per place. [2024-06-27 22:32:21,783 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 63 selfloop transitions, 29 changer transitions 2/107 dead transitions. [2024-06-27 22:32:21,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 107 transitions, 709 flow [2024-06-27 22:32:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:32:21,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:32:21,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 154 transitions. [2024-06-27 22:32:21,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6695652173913044 [2024-06-27 22:32:21,786 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 337 flow. Second operand 5 states and 154 transitions. [2024-06-27 22:32:21,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 107 transitions, 709 flow [2024-06-27 22:32:21,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 107 transitions, 682 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:21,795 INFO L231 Difference]: Finished difference. Result has 70 places, 77 transitions, 500 flow [2024-06-27 22:32:21,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=500, PETRI_PLACES=70, PETRI_TRANSITIONS=77} [2024-06-27 22:32:21,796 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-06-27 22:32:21,796 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 77 transitions, 500 flow [2024-06-27 22:32:21,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:21,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:21,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:21,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:32:21,797 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:21,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:21,797 INFO L85 PathProgramCache]: Analyzing trace with hash -2014311520, now seen corresponding path program 1 times [2024-06-27 22:32:21,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:21,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697467991] [2024-06-27 22:32:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:21,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:21,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:21,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:21,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697467991] [2024-06-27 22:32:21,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697467991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:21,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:21,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:32:21,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062117723] [2024-06-27 22:32:21,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:21,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:32:21,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:21,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:32:21,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:32:21,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 46 [2024-06-27 22:32:21,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 77 transitions, 500 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2024-06-27 22:32:21,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:21,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 46 [2024-06-27 22:32:21,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:22,147 INFO L124 PetriNetUnfolderBase]: 1359/2531 cut-off events. [2024-06-27 22:32:22,148 INFO L125 PetriNetUnfolderBase]: For 5898/6006 co-relation queries the response was YES. [2024-06-27 22:32:22,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8071 conditions, 2531 events. 1359/2531 cut-off events. For 5898/6006 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 16797 event pairs, 498 based on Foata normal form. 46/2431 useless extension candidates. Maximal degree in co-relation 8047. Up to 1650 conditions per place. [2024-06-27 22:32:22,163 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 51 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2024-06-27 22:32:22,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 662 flow [2024-06-27 22:32:22,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:32:22,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:32:22,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-06-27 22:32:22,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7391304347826086 [2024-06-27 22:32:22,164 INFO L175 Difference]: Start difference. First operand has 70 places, 77 transitions, 500 flow. Second operand 3 states and 102 transitions. [2024-06-27 22:32:22,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 662 flow [2024-06-27 22:32:22,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 89 transitions, 619 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:22,171 INFO L231 Difference]: Finished difference. Result has 70 places, 76 transitions, 463 flow [2024-06-27 22:32:22,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=463, PETRI_PLACES=70, PETRI_TRANSITIONS=76} [2024-06-27 22:32:22,172 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-06-27 22:32:22,172 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 76 transitions, 463 flow [2024-06-27 22:32:22,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2024-06-27 22:32:22,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:22,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:22,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:32:22,173 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:22,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:22,174 INFO L85 PathProgramCache]: Analyzing trace with hash -2015384690, now seen corresponding path program 1 times [2024-06-27 22:32:22,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:22,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603093942] [2024-06-27 22:32:22,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:22,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:22,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:22,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:22,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603093942] [2024-06-27 22:32:22,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603093942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:22,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:22,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:32:22,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467986826] [2024-06-27 22:32:22,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:22,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:32:22,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:22,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:32:22,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:32:22,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:32:22,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 76 transitions, 463 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2024-06-27 22:32:22,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:22,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:32:22,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:22,822 INFO L124 PetriNetUnfolderBase]: 2816/4720 cut-off events. [2024-06-27 22:32:22,822 INFO L125 PetriNetUnfolderBase]: For 13331/13331 co-relation queries the response was YES. [2024-06-27 22:32:22,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15672 conditions, 4720 events. 2816/4720 cut-off events. For 13331/13331 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 30040 event pairs, 1538 based on Foata normal form. 3/4586 useless extension candidates. Maximal degree in co-relation 15646. Up to 4033 conditions per place. [2024-06-27 22:32:22,846 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 82 selfloop transitions, 11 changer transitions 3/106 dead transitions. [2024-06-27 22:32:22,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 106 transitions, 787 flow [2024-06-27 22:32:22,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:32:22,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:32:22,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-27 22:32:22,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5391304347826087 [2024-06-27 22:32:22,848 INFO L175 Difference]: Start difference. First operand has 70 places, 76 transitions, 463 flow. Second operand 5 states and 124 transitions. [2024-06-27 22:32:22,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 106 transitions, 787 flow [2024-06-27 22:32:22,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 106 transitions, 769 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:22,858 INFO L231 Difference]: Finished difference. Result has 75 places, 84 transitions, 553 flow [2024-06-27 22:32:22,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=553, PETRI_PLACES=75, PETRI_TRANSITIONS=84} [2024-06-27 22:32:22,859 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2024-06-27 22:32:22,860 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 84 transitions, 553 flow [2024-06-27 22:32:22,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2024-06-27 22:32:22,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:22,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:22,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:32:22,860 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:22,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:22,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1199356971, now seen corresponding path program 1 times [2024-06-27 22:32:22,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:22,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198580582] [2024-06-27 22:32:22,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:22,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:23,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:23,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198580582] [2024-06-27 22:32:23,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198580582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:23,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:23,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:23,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160707297] [2024-06-27 22:32:23,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:23,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:23,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:23,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:23,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:23,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:32:23,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 84 transitions, 553 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:23,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:23,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:32:23,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:23,941 INFO L124 PetriNetUnfolderBase]: 2127/3573 cut-off events. [2024-06-27 22:32:23,941 INFO L125 PetriNetUnfolderBase]: For 10120/10139 co-relation queries the response was YES. [2024-06-27 22:32:23,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12731 conditions, 3573 events. 2127/3573 cut-off events. For 10120/10139 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 21929 event pairs, 505 based on Foata normal form. 20/3522 useless extension candidates. Maximal degree in co-relation 12700. Up to 2906 conditions per place. [2024-06-27 22:32:23,959 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 90 selfloop transitions, 37 changer transitions 0/138 dead transitions. [2024-06-27 22:32:23,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 138 transitions, 1024 flow [2024-06-27 22:32:23,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:23,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:23,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-06-27 22:32:23,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5993788819875776 [2024-06-27 22:32:23,960 INFO L175 Difference]: Start difference. First operand has 75 places, 84 transitions, 553 flow. Second operand 7 states and 193 transitions. [2024-06-27 22:32:23,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 138 transitions, 1024 flow [2024-06-27 22:32:23,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 138 transitions, 1022 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 22:32:23,970 INFO L231 Difference]: Finished difference. Result has 83 places, 97 transitions, 763 flow [2024-06-27 22:32:23,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=763, PETRI_PLACES=83, PETRI_TRANSITIONS=97} [2024-06-27 22:32:23,971 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 31 predicate places. [2024-06-27 22:32:23,972 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 97 transitions, 763 flow [2024-06-27 22:32:23,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:23,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:23,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:23,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:32:23,972 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:23,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:23,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1100068513, now seen corresponding path program 2 times [2024-06-27 22:32:23,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:23,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651488084] [2024-06-27 22:32:23,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:23,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:24,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:24,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:24,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651488084] [2024-06-27 22:32:24,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651488084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:24,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:24,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:24,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701003427] [2024-06-27 22:32:24,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:24,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:24,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:24,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:24,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:24,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 22:32:24,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 97 transitions, 763 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:24,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:24,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 22:32:24,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:24,745 INFO L124 PetriNetUnfolderBase]: 1986/3469 cut-off events. [2024-06-27 22:32:24,746 INFO L125 PetriNetUnfolderBase]: For 11766/11783 co-relation queries the response was YES. [2024-06-27 22:32:24,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12782 conditions, 3469 events. 1986/3469 cut-off events. For 11766/11783 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 22219 event pairs, 538 based on Foata normal form. 18/3367 useless extension candidates. Maximal degree in co-relation 12745. Up to 2668 conditions per place. [2024-06-27 22:32:24,765 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 80 selfloop transitions, 38 changer transitions 0/132 dead transitions. [2024-06-27 22:32:24,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 132 transitions, 1178 flow [2024-06-27 22:32:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:32:24,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:32:24,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-06-27 22:32:24,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6478260869565218 [2024-06-27 22:32:24,767 INFO L175 Difference]: Start difference. First operand has 83 places, 97 transitions, 763 flow. Second operand 5 states and 149 transitions. [2024-06-27 22:32:24,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 132 transitions, 1178 flow [2024-06-27 22:32:24,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 132 transitions, 1083 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:24,790 INFO L231 Difference]: Finished difference. Result has 86 places, 104 transitions, 862 flow [2024-06-27 22:32:24,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=862, PETRI_PLACES=86, PETRI_TRANSITIONS=104} [2024-06-27 22:32:24,791 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 34 predicate places. [2024-06-27 22:32:24,791 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 104 transitions, 862 flow [2024-06-27 22:32:24,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:24,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:24,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:24,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:32:24,792 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:24,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:24,793 INFO L85 PathProgramCache]: Analyzing trace with hash -957923665, now seen corresponding path program 1 times [2024-06-27 22:32:24,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:24,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124077216] [2024-06-27 22:32:24,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:24,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:25,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:25,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124077216] [2024-06-27 22:32:25,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124077216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:25,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:25,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:25,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712903279] [2024-06-27 22:32:25,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:25,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:25,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:25,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:25,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:25,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 22:32:25,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 104 transitions, 862 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:25,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:25,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 22:32:25,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:25,776 INFO L124 PetriNetUnfolderBase]: 2184/3826 cut-off events. [2024-06-27 22:32:25,776 INFO L125 PetriNetUnfolderBase]: For 15601/15623 co-relation queries the response was YES. [2024-06-27 22:32:25,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14504 conditions, 3826 events. 2184/3826 cut-off events. For 15601/15623 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 25122 event pairs, 610 based on Foata normal form. 40/3725 useless extension candidates. Maximal degree in co-relation 14465. Up to 2783 conditions per place. [2024-06-27 22:32:25,795 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 95 selfloop transitions, 37 changer transitions 0/146 dead transitions. [2024-06-27 22:32:25,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 146 transitions, 1340 flow [2024-06-27 22:32:25,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:25,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:25,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-06-27 22:32:25,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2024-06-27 22:32:25,797 INFO L175 Difference]: Start difference. First operand has 86 places, 104 transitions, 862 flow. Second operand 6 states and 177 transitions. [2024-06-27 22:32:25,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 146 transitions, 1340 flow [2024-06-27 22:32:25,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 146 transitions, 1287 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:25,817 INFO L231 Difference]: Finished difference. Result has 93 places, 110 transitions, 998 flow [2024-06-27 22:32:25,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=998, PETRI_PLACES=93, PETRI_TRANSITIONS=110} [2024-06-27 22:32:25,818 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 41 predicate places. [2024-06-27 22:32:25,818 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 110 transitions, 998 flow [2024-06-27 22:32:25,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:25,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:25,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:25,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:32:25,820 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:25,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:25,821 INFO L85 PathProgramCache]: Analyzing trace with hash -954169255, now seen corresponding path program 2 times [2024-06-27 22:32:25,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:25,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57368842] [2024-06-27 22:32:25,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:25,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:26,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:26,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57368842] [2024-06-27 22:32:26,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57368842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:26,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:26,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:26,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485998685] [2024-06-27 22:32:26,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:26,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:26,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:26,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:26,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:26,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 22:32:26,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 110 transitions, 998 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:26,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:26,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 22:32:26,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:26,836 INFO L124 PetriNetUnfolderBase]: 2252/3917 cut-off events. [2024-06-27 22:32:26,836 INFO L125 PetriNetUnfolderBase]: For 18356/18356 co-relation queries the response was YES. [2024-06-27 22:32:26,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15549 conditions, 3917 events. 2252/3917 cut-off events. For 18356/18356 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 25280 event pairs, 391 based on Foata normal form. 6/3789 useless extension candidates. Maximal degree in co-relation 15506. Up to 2068 conditions per place. [2024-06-27 22:32:26,861 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 84 selfloop transitions, 61 changer transitions 0/159 dead transitions. [2024-06-27 22:32:26,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 159 transitions, 1540 flow [2024-06-27 22:32:26,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:26,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:26,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2024-06-27 22:32:26,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6366459627329193 [2024-06-27 22:32:26,863 INFO L175 Difference]: Start difference. First operand has 93 places, 110 transitions, 998 flow. Second operand 7 states and 205 transitions. [2024-06-27 22:32:26,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 159 transitions, 1540 flow [2024-06-27 22:32:26,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 159 transitions, 1507 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:26,889 INFO L231 Difference]: Finished difference. Result has 100 places, 117 transitions, 1215 flow [2024-06-27 22:32:26,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1215, PETRI_PLACES=100, PETRI_TRANSITIONS=117} [2024-06-27 22:32:26,890 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 48 predicate places. [2024-06-27 22:32:26,890 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 117 transitions, 1215 flow [2024-06-27 22:32:26,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:26,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:26,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:26,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:32:26,892 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:26,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:26,893 INFO L85 PathProgramCache]: Analyzing trace with hash -954175765, now seen corresponding path program 3 times [2024-06-27 22:32:26,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:26,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635408787] [2024-06-27 22:32:26,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:26,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:27,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:27,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:27,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635408787] [2024-06-27 22:32:27,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635408787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:27,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:27,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:27,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892171998] [2024-06-27 22:32:27,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:27,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:27,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:27,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:27,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:27,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 22:32:27,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 117 transitions, 1215 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:27,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:27,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 22:32:27,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:27,893 INFO L124 PetriNetUnfolderBase]: 2395/4216 cut-off events. [2024-06-27 22:32:27,894 INFO L125 PetriNetUnfolderBase]: For 26605/26605 co-relation queries the response was YES. [2024-06-27 22:32:27,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18354 conditions, 4216 events. 2395/4216 cut-off events. For 26605/26605 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 28007 event pairs, 784 based on Foata normal form. 22/4080 useless extension candidates. Maximal degree in co-relation 18308. Up to 2966 conditions per place. [2024-06-27 22:32:27,923 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 89 selfloop transitions, 51 changer transitions 0/154 dead transitions. [2024-06-27 22:32:27,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 154 transitions, 1674 flow [2024-06-27 22:32:27,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:27,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:27,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-06-27 22:32:27,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2024-06-27 22:32:27,925 INFO L175 Difference]: Start difference. First operand has 100 places, 117 transitions, 1215 flow. Second operand 6 states and 177 transitions. [2024-06-27 22:32:27,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 154 transitions, 1674 flow [2024-06-27 22:32:27,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 154 transitions, 1537 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:27,967 INFO L231 Difference]: Finished difference. Result has 102 places, 118 transitions, 1210 flow [2024-06-27 22:32:27,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1210, PETRI_PLACES=102, PETRI_TRANSITIONS=118} [2024-06-27 22:32:27,968 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 50 predicate places. [2024-06-27 22:32:27,968 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 118 transitions, 1210 flow [2024-06-27 22:32:27,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:27,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:27,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:27,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:32:27,968 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:27,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:27,969 INFO L85 PathProgramCache]: Analyzing trace with hash -257613744, now seen corresponding path program 1 times [2024-06-27 22:32:27,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:27,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973320026] [2024-06-27 22:32:27,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:27,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:28,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:28,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973320026] [2024-06-27 22:32:28,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973320026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:28,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:28,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:28,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854611237] [2024-06-27 22:32:28,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:28,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:28,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:28,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:28,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:28,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 22:32:28,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 118 transitions, 1210 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:28,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:28,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 22:32:28,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:29,146 INFO L124 PetriNetUnfolderBase]: 2501/4433 cut-off events. [2024-06-27 22:32:29,151 INFO L125 PetriNetUnfolderBase]: For 28816/28843 co-relation queries the response was YES. [2024-06-27 22:32:29,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19064 conditions, 4433 events. 2501/4433 cut-off events. For 28816/28843 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30220 event pairs, 741 based on Foata normal form. 34/4308 useless extension candidates. Maximal degree in co-relation 19017. Up to 3022 conditions per place. [2024-06-27 22:32:29,221 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 101 selfloop transitions, 44 changer transitions 0/159 dead transitions. [2024-06-27 22:32:29,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 159 transitions, 1702 flow [2024-06-27 22:32:29,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:29,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:29,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-06-27 22:32:29,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6485507246376812 [2024-06-27 22:32:29,223 INFO L175 Difference]: Start difference. First operand has 102 places, 118 transitions, 1210 flow. Second operand 6 states and 179 transitions. [2024-06-27 22:32:29,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 159 transitions, 1702 flow [2024-06-27 22:32:29,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 159 transitions, 1597 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:29,286 INFO L231 Difference]: Finished difference. Result has 104 places, 119 transitions, 1232 flow [2024-06-27 22:32:29,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1232, PETRI_PLACES=104, PETRI_TRANSITIONS=119} [2024-06-27 22:32:29,287 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 52 predicate places. [2024-06-27 22:32:29,294 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 119 transitions, 1232 flow [2024-06-27 22:32:29,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:29,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:29,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:29,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:32:29,295 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:29,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:29,295 INFO L85 PathProgramCache]: Analyzing trace with hash -374539120, now seen corresponding path program 2 times [2024-06-27 22:32:29,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:29,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446381686] [2024-06-27 22:32:29,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:29,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:30,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:30,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446381686] [2024-06-27 22:32:30,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446381686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:30,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:30,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:30,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808543194] [2024-06-27 22:32:30,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:30,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:30,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:30,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:30,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:30,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 22:32:30,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 119 transitions, 1232 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:30,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:30,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 22:32:30,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:30,844 INFO L124 PetriNetUnfolderBase]: 2609/4598 cut-off events. [2024-06-27 22:32:30,844 INFO L125 PetriNetUnfolderBase]: For 31971/31971 co-relation queries the response was YES. [2024-06-27 22:32:30,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20011 conditions, 4598 events. 2609/4598 cut-off events. For 31971/31971 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 31323 event pairs, 384 based on Foata normal form. 12/4471 useless extension candidates. Maximal degree in co-relation 19963. Up to 2216 conditions per place. [2024-06-27 22:32:30,870 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 91 selfloop transitions, 72 changer transitions 0/177 dead transitions. [2024-06-27 22:32:30,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 177 transitions, 1955 flow [2024-06-27 22:32:30,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:30,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:30,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 207 transitions. [2024-06-27 22:32:30,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-27 22:32:30,872 INFO L175 Difference]: Start difference. First operand has 104 places, 119 transitions, 1232 flow. Second operand 7 states and 207 transitions. [2024-06-27 22:32:30,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 177 transitions, 1955 flow [2024-06-27 22:32:30,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 177 transitions, 1859 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:30,916 INFO L231 Difference]: Finished difference. Result has 109 places, 135 transitions, 1583 flow [2024-06-27 22:32:30,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1583, PETRI_PLACES=109, PETRI_TRANSITIONS=135} [2024-06-27 22:32:30,917 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 57 predicate places. [2024-06-27 22:32:30,917 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 135 transitions, 1583 flow [2024-06-27 22:32:30,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:30,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:30,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:30,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:32:30,918 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:30,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:30,918 INFO L85 PathProgramCache]: Analyzing trace with hash 297138319, now seen corresponding path program 1 times [2024-06-27 22:32:30,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:30,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103115534] [2024-06-27 22:32:30,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:30,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:31,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:31,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103115534] [2024-06-27 22:32:31,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103115534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:31,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:31,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:31,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503450355] [2024-06-27 22:32:31,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:31,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:31,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:31,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:31,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:31,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:32:31,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 135 transitions, 1583 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:31,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:31,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:32:31,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:31,778 INFO L124 PetriNetUnfolderBase]: 3520/6096 cut-off events. [2024-06-27 22:32:31,779 INFO L125 PetriNetUnfolderBase]: For 47870/47885 co-relation queries the response was YES. [2024-06-27 22:32:31,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27522 conditions, 6096 events. 3520/6096 cut-off events. For 47870/47885 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 42096 event pairs, 1502 based on Foata normal form. 13/5915 useless extension candidates. Maximal degree in co-relation 27470. Up to 5057 conditions per place. [2024-06-27 22:32:31,821 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 128 selfloop transitions, 19 changer transitions 0/157 dead transitions. [2024-06-27 22:32:31,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 157 transitions, 2018 flow [2024-06-27 22:32:31,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:31,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:31,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-27 22:32:31,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963768115942029 [2024-06-27 22:32:31,823 INFO L175 Difference]: Start difference. First operand has 109 places, 135 transitions, 1583 flow. Second operand 6 states and 137 transitions. [2024-06-27 22:32:31,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 157 transitions, 2018 flow [2024-06-27 22:32:31,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 157 transitions, 1848 flow, removed 66 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:31,908 INFO L231 Difference]: Finished difference. Result has 114 places, 139 transitions, 1522 flow [2024-06-27 22:32:31,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1522, PETRI_PLACES=114, PETRI_TRANSITIONS=139} [2024-06-27 22:32:31,909 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 62 predicate places. [2024-06-27 22:32:31,909 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 139 transitions, 1522 flow [2024-06-27 22:32:31,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:31,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:31,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:31,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:32:31,910 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:31,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:31,910 INFO L85 PathProgramCache]: Analyzing trace with hash 245580461, now seen corresponding path program 2 times [2024-06-27 22:32:31,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:31,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444084655] [2024-06-27 22:32:31,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:31,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:32,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:32,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444084655] [2024-06-27 22:32:32,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444084655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:32,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:32,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:32,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462212136] [2024-06-27 22:32:32,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:32,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:32,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:32,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:32,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:32,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:32:32,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 139 transitions, 1522 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:32,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:32,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:32:32,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:32,850 INFO L124 PetriNetUnfolderBase]: 3512/6076 cut-off events. [2024-06-27 22:32:32,850 INFO L125 PetriNetUnfolderBase]: For 39195/39210 co-relation queries the response was YES. [2024-06-27 22:32:32,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26170 conditions, 6076 events. 3512/6076 cut-off events. For 39195/39210 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 41922 event pairs, 1502 based on Foata normal form. 13/5898 useless extension candidates. Maximal degree in co-relation 26115. Up to 4993 conditions per place. [2024-06-27 22:32:32,889 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 136 selfloop transitions, 21 changer transitions 0/167 dead transitions. [2024-06-27 22:32:32,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 167 transitions, 1996 flow [2024-06-27 22:32:32,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:32,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:32,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-27 22:32:32,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-27 22:32:32,891 INFO L175 Difference]: Start difference. First operand has 114 places, 139 transitions, 1522 flow. Second operand 6 states and 147 transitions. [2024-06-27 22:32:32,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 167 transitions, 1996 flow [2024-06-27 22:32:32,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 167 transitions, 1952 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:32,938 INFO L231 Difference]: Finished difference. Result has 117 places, 141 transitions, 1555 flow [2024-06-27 22:32:32,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1555, PETRI_PLACES=117, PETRI_TRANSITIONS=141} [2024-06-27 22:32:32,938 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 65 predicate places. [2024-06-27 22:32:32,939 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 141 transitions, 1555 flow [2024-06-27 22:32:32,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:32,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:32,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:32,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:32:32,939 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:32,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:32,940 INFO L85 PathProgramCache]: Analyzing trace with hash 237997644, now seen corresponding path program 1 times [2024-06-27 22:32:32,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:32,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327028579] [2024-06-27 22:32:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:32,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:33,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:33,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327028579] [2024-06-27 22:32:33,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327028579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:33,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:33,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:32:33,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098898195] [2024-06-27 22:32:33,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:33,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:32:33,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:33,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:32:33,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:32:33,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:32:33,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 141 transitions, 1555 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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) [2024-06-27 22:32:33,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:33,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:32:33,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:33,657 INFO L124 PetriNetUnfolderBase]: 3116/5459 cut-off events. [2024-06-27 22:32:33,657 INFO L125 PetriNetUnfolderBase]: For 39166/39166 co-relation queries the response was YES. [2024-06-27 22:32:33,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23976 conditions, 5459 events. 3116/5459 cut-off events. For 39166/39166 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 37880 event pairs, 1594 based on Foata normal form. 1/5266 useless extension candidates. Maximal degree in co-relation 23920. Up to 4562 conditions per place. [2024-06-27 22:32:33,689 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 140 selfloop transitions, 20 changer transitions 0/173 dead transitions. [2024-06-27 22:32:33,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 173 transitions, 2089 flow [2024-06-27 22:32:33,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:32:33,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:32:33,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-27 22:32:33,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5782608695652174 [2024-06-27 22:32:33,691 INFO L175 Difference]: Start difference. First operand has 117 places, 141 transitions, 1555 flow. Second operand 5 states and 133 transitions. [2024-06-27 22:32:33,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 173 transitions, 2089 flow [2024-06-27 22:32:33,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 173 transitions, 2037 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:33,736 INFO L231 Difference]: Finished difference. Result has 120 places, 158 transitions, 1736 flow [2024-06-27 22:32:33,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1736, PETRI_PLACES=120, PETRI_TRANSITIONS=158} [2024-06-27 22:32:33,737 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 68 predicate places. [2024-06-27 22:32:33,737 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 158 transitions, 1736 flow [2024-06-27 22:32:33,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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) [2024-06-27 22:32:33,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:33,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:33,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:32:33,738 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:33,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:33,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1276057134, now seen corresponding path program 2 times [2024-06-27 22:32:33,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:33,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15394974] [2024-06-27 22:32:33,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:33,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:33,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:33,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15394974] [2024-06-27 22:32:33,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15394974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:33,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:33,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:32:33,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181590224] [2024-06-27 22:32:33,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:33,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:32:33,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:33,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:32:33,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:32:33,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:32:33,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 158 transitions, 1736 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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) [2024-06-27 22:32:33,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:33,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:32:33,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:34,514 INFO L124 PetriNetUnfolderBase]: 3113/5449 cut-off events. [2024-06-27 22:32:34,514 INFO L125 PetriNetUnfolderBase]: For 40444/40444 co-relation queries the response was YES. [2024-06-27 22:32:34,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24515 conditions, 5449 events. 3113/5449 cut-off events. For 40444/40444 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 37856 event pairs, 1598 based on Foata normal form. 1/5257 useless extension candidates. Maximal degree in co-relation 24456. Up to 4575 conditions per place. [2024-06-27 22:32:34,545 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 143 selfloop transitions, 14 changer transitions 0/170 dead transitions. [2024-06-27 22:32:34,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 170 transitions, 2085 flow [2024-06-27 22:32:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:32:34,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:32:34,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-27 22:32:34,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5521739130434783 [2024-06-27 22:32:34,546 INFO L175 Difference]: Start difference. First operand has 120 places, 158 transitions, 1736 flow. Second operand 5 states and 127 transitions. [2024-06-27 22:32:34,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 170 transitions, 2085 flow [2024-06-27 22:32:34,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 170 transitions, 2037 flow, removed 24 selfloop flow, removed 0 redundant places. [2024-06-27 22:32:34,598 INFO L231 Difference]: Finished difference. Result has 125 places, 159 transitions, 1732 flow [2024-06-27 22:32:34,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1732, PETRI_PLACES=125, PETRI_TRANSITIONS=159} [2024-06-27 22:32:34,599 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 73 predicate places. [2024-06-27 22:32:34,599 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 159 transitions, 1732 flow [2024-06-27 22:32:34,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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) [2024-06-27 22:32:34,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:34,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:34,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:32:34,600 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:34,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:34,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1095389121, now seen corresponding path program 1 times [2024-06-27 22:32:34,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:34,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658505739] [2024-06-27 22:32:34,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:34,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:34,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:34,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658505739] [2024-06-27 22:32:34,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658505739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:34,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:34,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:34,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540396467] [2024-06-27 22:32:34,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:34,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:34,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:34,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:34,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:34,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:32:34,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 159 transitions, 1732 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:34,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:34,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:32:34,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:35,898 INFO L124 PetriNetUnfolderBase]: 3991/6869 cut-off events. [2024-06-27 22:32:35,899 INFO L125 PetriNetUnfolderBase]: For 50804/50821 co-relation queries the response was YES. [2024-06-27 22:32:35,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30961 conditions, 6869 events. 3991/6869 cut-off events. For 50804/50821 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 48254 event pairs, 1119 based on Foata normal form. 21/6674 useless extension candidates. Maximal degree in co-relation 30898. Up to 5075 conditions per place. [2024-06-27 22:32:35,946 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 184 selfloop transitions, 58 changer transitions 0/252 dead transitions. [2024-06-27 22:32:35,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 252 transitions, 2864 flow [2024-06-27 22:32:35,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:32:35,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:32:35,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 313 transitions. [2024-06-27 22:32:35,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234113712374582 [2024-06-27 22:32:35,948 INFO L175 Difference]: Start difference. First operand has 125 places, 159 transitions, 1732 flow. Second operand 13 states and 313 transitions. [2024-06-27 22:32:35,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 252 transitions, 2864 flow [2024-06-27 22:32:36,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 252 transitions, 2833 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:36,021 INFO L231 Difference]: Finished difference. Result has 139 places, 178 transitions, 2085 flow [2024-06-27 22:32:36,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2085, PETRI_PLACES=139, PETRI_TRANSITIONS=178} [2024-06-27 22:32:36,021 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-06-27 22:32:36,021 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 178 transitions, 2085 flow [2024-06-27 22:32:36,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:36,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:36,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:36,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:32:36,022 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:36,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:36,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1274427318, now seen corresponding path program 1 times [2024-06-27 22:32:36,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:36,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810410265] [2024-06-27 22:32:36,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:36,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:36,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:36,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:36,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810410265] [2024-06-27 22:32:36,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810410265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:36,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:36,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:32:36,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725715572] [2024-06-27 22:32:36,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:36,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:32:36,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:36,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:32:36,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:32:36,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:32:36,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 178 transitions, 2085 flow. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:36,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:36,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:32:36,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:38,062 INFO L124 PetriNetUnfolderBase]: 3865/6501 cut-off events. [2024-06-27 22:32:38,063 INFO L125 PetriNetUnfolderBase]: For 67866/67866 co-relation queries the response was YES. [2024-06-27 22:32:38,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33638 conditions, 6501 events. 3865/6501 cut-off events. For 67866/67866 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 45190 event pairs, 408 based on Foata normal form. 12/6334 useless extension candidates. Maximal degree in co-relation 33571. Up to 3462 conditions per place. [2024-06-27 22:32:38,117 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 162 selfloop transitions, 79 changer transitions 0/255 dead transitions. [2024-06-27 22:32:38,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 255 transitions, 3133 flow [2024-06-27 22:32:38,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:38,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:38,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 228 transitions. [2024-06-27 22:32:38,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6195652173913043 [2024-06-27 22:32:38,133 INFO L175 Difference]: Start difference. First operand has 139 places, 178 transitions, 2085 flow. Second operand 8 states and 228 transitions. [2024-06-27 22:32:38,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 255 transitions, 3133 flow [2024-06-27 22:32:38,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 255 transitions, 2991 flow, removed 61 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:38,232 INFO L231 Difference]: Finished difference. Result has 147 places, 194 transitions, 2350 flow [2024-06-27 22:32:38,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1943, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2350, PETRI_PLACES=147, PETRI_TRANSITIONS=194} [2024-06-27 22:32:38,232 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 95 predicate places. [2024-06-27 22:32:38,232 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 194 transitions, 2350 flow [2024-06-27 22:32:38,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:38,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:38,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:38,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:32:38,233 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:38,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:38,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1274196678, now seen corresponding path program 2 times [2024-06-27 22:32:38,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:38,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987752576] [2024-06-27 22:32:38,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:38,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:39,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:39,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987752576] [2024-06-27 22:32:39,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987752576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:39,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:39,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:32:39,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678284769] [2024-06-27 22:32:39,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:39,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:32:39,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:39,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:32:39,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:32:39,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:32:39,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 194 transitions, 2350 flow. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:39,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:39,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:32:39,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:40,155 INFO L124 PetriNetUnfolderBase]: 3923/6691 cut-off events. [2024-06-27 22:32:40,155 INFO L125 PetriNetUnfolderBase]: For 71529/71529 co-relation queries the response was YES. [2024-06-27 22:32:40,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35616 conditions, 6691 events. 3923/6691 cut-off events. For 71529/71529 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 47326 event pairs, 624 based on Foata normal form. 12/6484 useless extension candidates. Maximal degree in co-relation 35544. Up to 3488 conditions per place. [2024-06-27 22:32:40,214 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 150 selfloop transitions, 92 changer transitions 0/256 dead transitions. [2024-06-27 22:32:40,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 256 transitions, 3201 flow [2024-06-27 22:32:40,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:32:40,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:32:40,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 254 transitions. [2024-06-27 22:32:40,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6135265700483091 [2024-06-27 22:32:40,215 INFO L175 Difference]: Start difference. First operand has 147 places, 194 transitions, 2350 flow. Second operand 9 states and 254 transitions. [2024-06-27 22:32:40,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 256 transitions, 3201 flow [2024-06-27 22:32:40,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 256 transitions, 3083 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:40,341 INFO L231 Difference]: Finished difference. Result has 154 places, 199 transitions, 2498 flow [2024-06-27 22:32:40,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2233, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2498, PETRI_PLACES=154, PETRI_TRANSITIONS=199} [2024-06-27 22:32:40,341 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 102 predicate places. [2024-06-27 22:32:40,341 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 199 transitions, 2498 flow [2024-06-27 22:32:40,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:40,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:40,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:40,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:32:40,342 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:40,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:40,343 INFO L85 PathProgramCache]: Analyzing trace with hash 88332761, now seen corresponding path program 2 times [2024-06-27 22:32:40,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:40,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015619408] [2024-06-27 22:32:40,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:40,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:40,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:40,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015619408] [2024-06-27 22:32:40,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015619408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:40,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:40,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:40,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564802838] [2024-06-27 22:32:40,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:40,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:40,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:40,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:40,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:40,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:32:40,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 199 transitions, 2498 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:40,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:40,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:32:40,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:41,834 INFO L124 PetriNetUnfolderBase]: 4771/8237 cut-off events. [2024-06-27 22:32:41,835 INFO L125 PetriNetUnfolderBase]: For 88165/88180 co-relation queries the response was YES. [2024-06-27 22:32:41,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43045 conditions, 8237 events. 4771/8237 cut-off events. For 88165/88180 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 60190 event pairs, 1026 based on Foata normal form. 19/8003 useless extension candidates. Maximal degree in co-relation 42970. Up to 5654 conditions per place. [2024-06-27 22:32:41,907 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 217 selfloop transitions, 59 changer transitions 0/286 dead transitions. [2024-06-27 22:32:41,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 286 transitions, 3886 flow [2024-06-27 22:32:41,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:32:41,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:32:41,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 22:32:41,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241545893719807 [2024-06-27 22:32:41,909 INFO L175 Difference]: Start difference. First operand has 154 places, 199 transitions, 2498 flow. Second operand 9 states and 217 transitions. [2024-06-27 22:32:41,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 286 transitions, 3886 flow [2024-06-27 22:32:42,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 286 transitions, 3664 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 22:32:42,078 INFO L231 Difference]: Finished difference. Result has 157 places, 216 transitions, 2632 flow [2024-06-27 22:32:42,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2632, PETRI_PLACES=157, PETRI_TRANSITIONS=216} [2024-06-27 22:32:42,079 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 105 predicate places. [2024-06-27 22:32:42,079 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 216 transitions, 2632 flow [2024-06-27 22:32:42,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:42,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:42,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:42,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:32:42,079 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:42,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:42,080 INFO L85 PathProgramCache]: Analyzing trace with hash 621353891, now seen corresponding path program 3 times [2024-06-27 22:32:42,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:42,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163065705] [2024-06-27 22:32:42,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:42,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:42,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:42,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:42,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163065705] [2024-06-27 22:32:42,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163065705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:42,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:42,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:42,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652993179] [2024-06-27 22:32:42,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:42,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:42,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:42,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:42,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:42,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:32:42,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 216 transitions, 2632 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:42,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:42,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:32:42,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:43,438 INFO L124 PetriNetUnfolderBase]: 4745/8214 cut-off events. [2024-06-27 22:32:43,439 INFO L125 PetriNetUnfolderBase]: For 85137/85137 co-relation queries the response was YES. [2024-06-27 22:32:43,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42202 conditions, 8214 events. 4745/8214 cut-off events. For 85137/85137 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 60021 event pairs, 1070 based on Foata normal form. 11/7966 useless extension candidates. Maximal degree in co-relation 42125. Up to 5643 conditions per place. [2024-06-27 22:32:43,520 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 190 selfloop transitions, 57 changer transitions 0/257 dead transitions. [2024-06-27 22:32:43,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 257 transitions, 3483 flow [2024-06-27 22:32:43,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:43,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:43,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 22:32:43,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124223602484472 [2024-06-27 22:32:43,521 INFO L175 Difference]: Start difference. First operand has 157 places, 216 transitions, 2632 flow. Second operand 7 states and 165 transitions. [2024-06-27 22:32:43,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 257 transitions, 3483 flow [2024-06-27 22:32:43,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 257 transitions, 3361 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:43,680 INFO L231 Difference]: Finished difference. Result has 161 places, 216 transitions, 2651 flow [2024-06-27 22:32:43,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2530, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2651, PETRI_PLACES=161, PETRI_TRANSITIONS=216} [2024-06-27 22:32:43,680 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 109 predicate places. [2024-06-27 22:32:43,680 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 216 transitions, 2651 flow [2024-06-27 22:32:43,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:43,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:43,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:43,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:32:43,681 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:43,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:43,681 INFO L85 PathProgramCache]: Analyzing trace with hash -976939707, now seen corresponding path program 4 times [2024-06-27 22:32:43,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:43,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492503544] [2024-06-27 22:32:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:43,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:43,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:43,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:43,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492503544] [2024-06-27 22:32:43,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492503544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:43,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:43,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:43,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189770596] [2024-06-27 22:32:43,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:43,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:43,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:43,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:43,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:43,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:32:43,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 216 transitions, 2651 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:43,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:43,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:32:43,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:45,025 INFO L124 PetriNetUnfolderBase]: 4724/8183 cut-off events. [2024-06-27 22:32:45,025 INFO L125 PetriNetUnfolderBase]: For 85638/85638 co-relation queries the response was YES. [2024-06-27 22:32:45,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41359 conditions, 8183 events. 4724/8183 cut-off events. For 85638/85638 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 59804 event pairs, 1078 based on Foata normal form. 9/7933 useless extension candidates. Maximal degree in co-relation 41281. Up to 5401 conditions per place. [2024-06-27 22:32:45,098 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 188 selfloop transitions, 59 changer transitions 0/257 dead transitions. [2024-06-27 22:32:45,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 257 transitions, 3509 flow [2024-06-27 22:32:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:45,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 22:32:45,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2024-06-27 22:32:45,100 INFO L175 Difference]: Start difference. First operand has 161 places, 216 transitions, 2651 flow. Second operand 7 states and 174 transitions. [2024-06-27 22:32:45,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 257 transitions, 3509 flow [2024-06-27 22:32:45,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 257 transitions, 3395 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 22:32:45,247 INFO L231 Difference]: Finished difference. Result has 162 places, 216 transitions, 2661 flow [2024-06-27 22:32:45,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2537, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2661, PETRI_PLACES=162, PETRI_TRANSITIONS=216} [2024-06-27 22:32:45,248 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 110 predicate places. [2024-06-27 22:32:45,248 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 216 transitions, 2661 flow [2024-06-27 22:32:45,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:45,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:45,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:45,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:32:45,248 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:45,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:45,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1212156547, now seen corresponding path program 1 times [2024-06-27 22:32:45,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:45,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051871623] [2024-06-27 22:32:45,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:45,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:45,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:45,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:45,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051871623] [2024-06-27 22:32:45,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051871623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:45,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:45,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:45,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475133106] [2024-06-27 22:32:45,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:45,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:45,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:45,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:45,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:45,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:32:45,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 216 transitions, 2661 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:45,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:45,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:32:45,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:46,824 INFO L124 PetriNetUnfolderBase]: 4588/8122 cut-off events. [2024-06-27 22:32:46,824 INFO L125 PetriNetUnfolderBase]: For 86639/86639 co-relation queries the response was YES. [2024-06-27 22:32:46,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40749 conditions, 8122 events. 4588/8122 cut-off events. For 86639/86639 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 61420 event pairs, 2109 based on Foata normal form. 5/7779 useless extension candidates. Maximal degree in co-relation 40670. Up to 6493 conditions per place. [2024-06-27 22:32:46,899 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 217 selfloop transitions, 27 changer transitions 0/258 dead transitions. [2024-06-27 22:32:46,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 258 transitions, 3453 flow [2024-06-27 22:32:46,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:46,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:46,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-27 22:32:46,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5807453416149069 [2024-06-27 22:32:46,901 INFO L175 Difference]: Start difference. First operand has 162 places, 216 transitions, 2661 flow. Second operand 7 states and 187 transitions. [2024-06-27 22:32:46,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 258 transitions, 3453 flow [2024-06-27 22:32:47,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 258 transitions, 3327 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 22:32:47,045 INFO L231 Difference]: Finished difference. Result has 165 places, 222 transitions, 2654 flow [2024-06-27 22:32:47,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2535, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2654, PETRI_PLACES=165, PETRI_TRANSITIONS=222} [2024-06-27 22:32:47,046 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 113 predicate places. [2024-06-27 22:32:47,046 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 222 transitions, 2654 flow [2024-06-27 22:32:47,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:47,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:47,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:47,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:32:47,046 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:47,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:47,047 INFO L85 PathProgramCache]: Analyzing trace with hash 903362258, now seen corresponding path program 1 times [2024-06-27 22:32:47,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:47,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804815671] [2024-06-27 22:32:47,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:47,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:47,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:47,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804815671] [2024-06-27 22:32:47,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804815671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:47,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:47,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:47,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478169235] [2024-06-27 22:32:47,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:47,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:47,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:47,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:47,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:47,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:32:47,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 222 transitions, 2654 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:47,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:47,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:32:47,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:48,244 INFO L124 PetriNetUnfolderBase]: 4573/8024 cut-off events. [2024-06-27 22:32:48,245 INFO L125 PetriNetUnfolderBase]: For 87277/87277 co-relation queries the response was YES. [2024-06-27 22:32:48,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40429 conditions, 8024 events. 4573/8024 cut-off events. For 87277/87277 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 60094 event pairs, 2117 based on Foata normal form. 2/7715 useless extension candidates. Maximal degree in co-relation 40349. Up to 6648 conditions per place. [2024-06-27 22:32:48,315 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 208 selfloop transitions, 19 changer transitions 0/241 dead transitions. [2024-06-27 22:32:48,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 241 transitions, 3230 flow [2024-06-27 22:32:48,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:32:48,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:32:48,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-27 22:32:48,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5608695652173913 [2024-06-27 22:32:48,317 INFO L175 Difference]: Start difference. First operand has 165 places, 222 transitions, 2654 flow. Second operand 5 states and 129 transitions. [2024-06-27 22:32:48,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 241 transitions, 3230 flow [2024-06-27 22:32:48,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 241 transitions, 3198 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:48,450 INFO L231 Difference]: Finished difference. Result has 168 places, 228 transitions, 2778 flow [2024-06-27 22:32:48,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2622, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2778, PETRI_PLACES=168, PETRI_TRANSITIONS=228} [2024-06-27 22:32:48,450 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 116 predicate places. [2024-06-27 22:32:48,450 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 228 transitions, 2778 flow [2024-06-27 22:32:48,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:48,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:48,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:48,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:32:48,451 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:48,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:48,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1206442410, now seen corresponding path program 2 times [2024-06-27 22:32:48,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:48,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045241583] [2024-06-27 22:32:48,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:48,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:48,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:48,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:48,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045241583] [2024-06-27 22:32:48,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045241583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:48,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:48,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:48,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289117568] [2024-06-27 22:32:48,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:48,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:48,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:48,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:48,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:48,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:32:48,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 228 transitions, 2778 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:48,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:48,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:32:48,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:49,857 INFO L124 PetriNetUnfolderBase]: 4568/8023 cut-off events. [2024-06-27 22:32:49,857 INFO L125 PetriNetUnfolderBase]: For 90997/90997 co-relation queries the response was YES. [2024-06-27 22:32:49,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40863 conditions, 8023 events. 4568/8023 cut-off events. For 90997/90997 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 60174 event pairs, 2121 based on Foata normal form. 2/7714 useless extension candidates. Maximal degree in co-relation 40780. Up to 6654 conditions per place. [2024-06-27 22:32:49,922 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 213 selfloop transitions, 16 changer transitions 0/243 dead transitions. [2024-06-27 22:32:49,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 243 transitions, 3311 flow [2024-06-27 22:32:49,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:32:49,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:32:49,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-27 22:32:49,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565217391304348 [2024-06-27 22:32:49,923 INFO L175 Difference]: Start difference. First operand has 168 places, 228 transitions, 2778 flow. Second operand 5 states and 128 transitions. [2024-06-27 22:32:49,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 243 transitions, 3311 flow [2024-06-27 22:32:50,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 243 transitions, 3263 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:50,087 INFO L231 Difference]: Finished difference. Result has 172 places, 231 transitions, 2822 flow [2024-06-27 22:32:50,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2730, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2822, PETRI_PLACES=172, PETRI_TRANSITIONS=231} [2024-06-27 22:32:50,087 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 120 predicate places. [2024-06-27 22:32:50,087 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 231 transitions, 2822 flow [2024-06-27 22:32:50,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:50,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:50,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:50,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:32:50,091 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:50,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:50,092 INFO L85 PathProgramCache]: Analyzing trace with hash -976754017, now seen corresponding path program 2 times [2024-06-27 22:32:50,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:50,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860364326] [2024-06-27 22:32:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:50,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:50,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:50,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:50,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860364326] [2024-06-27 22:32:50,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860364326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:50,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:50,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:50,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454054016] [2024-06-27 22:32:50,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:50,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:50,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:50,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:50,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:50,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:32:50,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 231 transitions, 2822 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:50,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:50,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:32:50,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:51,553 INFO L124 PetriNetUnfolderBase]: 4575/8021 cut-off events. [2024-06-27 22:32:51,553 INFO L125 PetriNetUnfolderBase]: For 94570/94570 co-relation queries the response was YES. [2024-06-27 22:32:51,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41211 conditions, 8021 events. 4575/8021 cut-off events. For 94570/94570 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 60011 event pairs, 2111 based on Foata normal form. 3/7714 useless extension candidates. Maximal degree in co-relation 41126. Up to 6601 conditions per place. [2024-06-27 22:32:51,616 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 220 selfloop transitions, 17 changer transitions 0/251 dead transitions. [2024-06-27 22:32:51,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 251 transitions, 3413 flow [2024-06-27 22:32:51,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:51,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:51,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-27 22:32:51,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2024-06-27 22:32:51,618 INFO L175 Difference]: Start difference. First operand has 172 places, 231 transitions, 2822 flow. Second operand 6 states and 152 transitions. [2024-06-27 22:32:51,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 251 transitions, 3413 flow [2024-06-27 22:32:51,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 251 transitions, 3370 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:51,771 INFO L231 Difference]: Finished difference. Result has 176 places, 232 transitions, 2832 flow [2024-06-27 22:32:51,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2779, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2832, PETRI_PLACES=176, PETRI_TRANSITIONS=232} [2024-06-27 22:32:51,773 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 124 predicate places. [2024-06-27 22:32:51,773 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 232 transitions, 2832 flow [2024-06-27 22:32:51,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:51,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:51,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:51,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:32:51,774 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:51,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:51,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1023779154, now seen corresponding path program 1 times [2024-06-27 22:32:51,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:51,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725392134] [2024-06-27 22:32:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:51,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:51,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:51,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725392134] [2024-06-27 22:32:51,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725392134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:51,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:51,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:51,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226679651] [2024-06-27 22:32:51,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:51,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:51,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:51,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:51,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:51,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:32:51,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 232 transitions, 2832 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:51,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:51,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:32:51,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:53,184 INFO L124 PetriNetUnfolderBase]: 4730/8269 cut-off events. [2024-06-27 22:32:53,184 INFO L125 PetriNetUnfolderBase]: For 95427/95582 co-relation queries the response was YES. [2024-06-27 22:32:53,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42255 conditions, 8269 events. 4730/8269 cut-off events. For 95427/95582 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 61244 event pairs, 1074 based on Foata normal form. 130/8119 useless extension candidates. Maximal degree in co-relation 42167. Up to 5583 conditions per place. [2024-06-27 22:32:53,252 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 174 selfloop transitions, 58 changer transitions 0/254 dead transitions. [2024-06-27 22:32:53,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 254 transitions, 3464 flow [2024-06-27 22:32:53,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 22:32:53,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2024-06-27 22:32:53,254 INFO L175 Difference]: Start difference. First operand has 176 places, 232 transitions, 2832 flow. Second operand 6 states and 142 transitions. [2024-06-27 22:32:53,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 254 transitions, 3464 flow [2024-06-27 22:32:53,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 254 transitions, 3428 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:53,406 INFO L231 Difference]: Finished difference. Result has 178 places, 232 transitions, 2950 flow [2024-06-27 22:32:53,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2796, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2950, PETRI_PLACES=178, PETRI_TRANSITIONS=232} [2024-06-27 22:32:53,415 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 126 predicate places. [2024-06-27 22:32:53,416 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 232 transitions, 2950 flow [2024-06-27 22:32:53,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:53,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:53,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:53,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:32:53,416 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:53,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:53,416 INFO L85 PathProgramCache]: Analyzing trace with hash 2074517261, now seen corresponding path program 1 times [2024-06-27 22:32:53,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:53,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455144116] [2024-06-27 22:32:53,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:53,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:53,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:53,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:53,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455144116] [2024-06-27 22:32:53,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455144116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:53,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:53,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:53,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143058126] [2024-06-27 22:32:53,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:53,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:53,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:53,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:53,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:53,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:32:53,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 232 transitions, 2950 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:53,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:53,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:32:53,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:54,782 INFO L124 PetriNetUnfolderBase]: 4535/7970 cut-off events. [2024-06-27 22:32:54,782 INFO L125 PetriNetUnfolderBase]: For 98974/98995 co-relation queries the response was YES. [2024-06-27 22:32:54,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42085 conditions, 7970 events. 4535/7970 cut-off events. For 98974/98995 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 59828 event pairs, 1708 based on Foata normal form. 15/7666 useless extension candidates. Maximal degree in co-relation 41996. Up to 6557 conditions per place. [2024-06-27 22:32:54,852 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 210 selfloop transitions, 41 changer transitions 0/265 dead transitions. [2024-06-27 22:32:54,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 265 transitions, 3812 flow [2024-06-27 22:32:54,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:54,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:54,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-27 22:32:54,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5688405797101449 [2024-06-27 22:32:54,853 INFO L175 Difference]: Start difference. First operand has 178 places, 232 transitions, 2950 flow. Second operand 6 states and 157 transitions. [2024-06-27 22:32:54,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 265 transitions, 3812 flow [2024-06-27 22:32:55,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 265 transitions, 3654 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 22:32:55,019 INFO L231 Difference]: Finished difference. Result has 178 places, 248 transitions, 3202 flow [2024-06-27 22:32:55,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2801, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3202, PETRI_PLACES=178, PETRI_TRANSITIONS=248} [2024-06-27 22:32:55,020 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 126 predicate places. [2024-06-27 22:32:55,020 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 248 transitions, 3202 flow [2024-06-27 22:32:55,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:55,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:55,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:55,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:32:55,021 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:55,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:55,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2082106061, now seen corresponding path program 2 times [2024-06-27 22:32:55,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:55,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063138234] [2024-06-27 22:32:55,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:55,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:55,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:55,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:55,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063138234] [2024-06-27 22:32:55,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063138234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:55,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:55,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:55,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323727242] [2024-06-27 22:32:55,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:55,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:55,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:55,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:55,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:55,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:32:55,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 248 transitions, 3202 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:55,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:55,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:32:55,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:56,363 INFO L124 PetriNetUnfolderBase]: 4564/7989 cut-off events. [2024-06-27 22:32:56,363 INFO L125 PetriNetUnfolderBase]: For 94849/94870 co-relation queries the response was YES. [2024-06-27 22:32:56,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41978 conditions, 7989 events. 4564/7989 cut-off events. For 94849/94870 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 59724 event pairs, 1700 based on Foata normal form. 15/7681 useless extension candidates. Maximal degree in co-relation 41890. Up to 6633 conditions per place. [2024-06-27 22:32:56,437 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 220 selfloop transitions, 25 changer transitions 0/259 dead transitions. [2024-06-27 22:32:56,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 259 transitions, 3720 flow [2024-06-27 22:32:56,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:32:56,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:32:56,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-27 22:32:56,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-06-27 22:32:56,439 INFO L175 Difference]: Start difference. First operand has 178 places, 248 transitions, 3202 flow. Second operand 5 states and 130 transitions. [2024-06-27 22:32:56,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 259 transitions, 3720 flow [2024-06-27 22:32:56,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 259 transitions, 3594 flow, removed 56 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:56,647 INFO L231 Difference]: Finished difference. Result has 181 places, 248 transitions, 3138 flow [2024-06-27 22:32:56,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3076, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3138, PETRI_PLACES=181, PETRI_TRANSITIONS=248} [2024-06-27 22:32:56,647 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 129 predicate places. [2024-06-27 22:32:56,647 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 248 transitions, 3138 flow [2024-06-27 22:32:56,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:56,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:56,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:56,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:32:56,648 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:56,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:56,648 INFO L85 PathProgramCache]: Analyzing trace with hash 845182639, now seen corresponding path program 1 times [2024-06-27 22:32:56,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:56,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855347055] [2024-06-27 22:32:56,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:56,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:57,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:57,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:57,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855347055] [2024-06-27 22:32:57,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855347055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:57,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:57,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:32:57,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337234472] [2024-06-27 22:32:57,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:57,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:32:57,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:57,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:32:57,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:32:57,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:32:57,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 248 transitions, 3138 flow. Second operand has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:57,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:57,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:32:57,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:59,057 INFO L124 PetriNetUnfolderBase]: 4703/8080 cut-off events. [2024-06-27 22:32:59,057 INFO L125 PetriNetUnfolderBase]: For 95980/95980 co-relation queries the response was YES. [2024-06-27 22:32:59,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42942 conditions, 8080 events. 4703/8080 cut-off events. For 95980/95980 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 59277 event pairs, 674 based on Foata normal form. 8/7808 useless extension candidates. Maximal degree in co-relation 42853. Up to 4387 conditions per place. [2024-06-27 22:32:59,146 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 184 selfloop transitions, 116 changer transitions 0/314 dead transitions. [2024-06-27 22:32:59,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 314 transitions, 4136 flow [2024-06-27 22:32:59,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:32:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:32:59,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 257 transitions. [2024-06-27 22:32:59,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6207729468599034 [2024-06-27 22:32:59,147 INFO L175 Difference]: Start difference. First operand has 181 places, 248 transitions, 3138 flow. Second operand 9 states and 257 transitions. [2024-06-27 22:32:59,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 314 transitions, 4136 flow [2024-06-27 22:32:59,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 314 transitions, 4084 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:59,346 INFO L231 Difference]: Finished difference. Result has 188 places, 254 transitions, 3410 flow [2024-06-27 22:32:59,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3086, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3410, PETRI_PLACES=188, PETRI_TRANSITIONS=254} [2024-06-27 22:32:59,347 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 136 predicate places. [2024-06-27 22:32:59,347 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 254 transitions, 3410 flow [2024-06-27 22:32:59,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:59,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:59,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:59,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:32:59,348 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:32:59,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:59,348 INFO L85 PathProgramCache]: Analyzing trace with hash 852534289, now seen corresponding path program 2 times [2024-06-27 22:32:59,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:59,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086244122] [2024-06-27 22:32:59,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:59,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:00,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:00,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086244122] [2024-06-27 22:33:00,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086244122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:00,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:00,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:33:00,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754967883] [2024-06-27 22:33:00,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:00,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:33:00,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:00,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:33:00,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:33:00,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:00,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 254 transitions, 3410 flow. Second operand has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:00,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:00,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:00,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:01,716 INFO L124 PetriNetUnfolderBase]: 4729/8059 cut-off events. [2024-06-27 22:33:01,716 INFO L125 PetriNetUnfolderBase]: For 106226/106226 co-relation queries the response was YES. [2024-06-27 22:33:01,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44543 conditions, 8059 events. 4729/8059 cut-off events. For 106226/106226 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 58897 event pairs, 492 based on Foata normal form. 8/7821 useless extension candidates. Maximal degree in co-relation 44452. Up to 4403 conditions per place. [2024-06-27 22:33:01,794 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 194 selfloop transitions, 104 changer transitions 0/312 dead transitions. [2024-06-27 22:33:01,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 312 transitions, 4348 flow [2024-06-27 22:33:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:01,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 227 transitions. [2024-06-27 22:33:01,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6168478260869565 [2024-06-27 22:33:01,795 INFO L175 Difference]: Start difference. First operand has 188 places, 254 transitions, 3410 flow. Second operand 8 states and 227 transitions. [2024-06-27 22:33:01,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 312 transitions, 4348 flow [2024-06-27 22:33:01,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 312 transitions, 4109 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:01,991 INFO L231 Difference]: Finished difference. Result has 190 places, 256 transitions, 3413 flow [2024-06-27 22:33:01,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3150, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3413, PETRI_PLACES=190, PETRI_TRANSITIONS=256} [2024-06-27 22:33:01,991 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 138 predicate places. [2024-06-27 22:33:01,991 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 256 transitions, 3413 flow [2024-06-27 22:33:01,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:01,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:01,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:01,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:33:01,992 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:01,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:01,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1385211543, now seen corresponding path program 3 times [2024-06-27 22:33:01,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:01,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686206271] [2024-06-27 22:33:01,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:01,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:02,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:02,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686206271] [2024-06-27 22:33:02,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686206271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:02,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:02,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:33:02,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130889867] [2024-06-27 22:33:02,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:02,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:33:02,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:02,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:33:02,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:33:02,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:02,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 256 transitions, 3413 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:02,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:02,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:02,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:03,317 INFO L124 PetriNetUnfolderBase]: 4689/8226 cut-off events. [2024-06-27 22:33:03,317 INFO L125 PetriNetUnfolderBase]: For 102164/102185 co-relation queries the response was YES. [2024-06-27 22:33:03,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43962 conditions, 8226 events. 4689/8226 cut-off events. For 102164/102185 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 62067 event pairs, 1748 based on Foata normal form. 15/7921 useless extension candidates. Maximal degree in co-relation 43870. Up to 6805 conditions per place. [2024-06-27 22:33:03,387 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 240 selfloop transitions, 25 changer transitions 0/279 dead transitions. [2024-06-27 22:33:03,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 279 transitions, 4071 flow [2024-06-27 22:33:03,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:33:03,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:33:03,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-27 22:33:03,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5615942028985508 [2024-06-27 22:33:03,389 INFO L175 Difference]: Start difference. First operand has 190 places, 256 transitions, 3413 flow. Second operand 6 states and 155 transitions. [2024-06-27 22:33:03,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 279 transitions, 4071 flow [2024-06-27 22:33:03,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 279 transitions, 3924 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:03,556 INFO L231 Difference]: Finished difference. Result has 192 places, 260 transitions, 3407 flow [2024-06-27 22:33:03,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3266, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3407, PETRI_PLACES=192, PETRI_TRANSITIONS=260} [2024-06-27 22:33:03,556 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 140 predicate places. [2024-06-27 22:33:03,556 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 260 transitions, 3407 flow [2024-06-27 22:33:03,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:03,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:03,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:03,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:33:03,557 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:03,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:03,557 INFO L85 PathProgramCache]: Analyzing trace with hash 256050151, now seen corresponding path program 4 times [2024-06-27 22:33:03,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:03,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594582180] [2024-06-27 22:33:03,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:03,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:03,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:03,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594582180] [2024-06-27 22:33:03,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594582180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:03,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:03,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:33:03,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059823903] [2024-06-27 22:33:03,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:03,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:33:03,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:03,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:33:03,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:33:03,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:03,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 260 transitions, 3407 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:03,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:03,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:03,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:04,830 INFO L124 PetriNetUnfolderBase]: 4674/8227 cut-off events. [2024-06-27 22:33:04,831 INFO L125 PetriNetUnfolderBase]: For 103224/103245 co-relation queries the response was YES. [2024-06-27 22:33:04,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43829 conditions, 8227 events. 4674/8227 cut-off events. For 103224/103245 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 62165 event pairs, 1728 based on Foata normal form. 15/7917 useless extension candidates. Maximal degree in co-relation 43737. Up to 6735 conditions per place. [2024-06-27 22:33:04,918 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 219 selfloop transitions, 56 changer transitions 0/289 dead transitions. [2024-06-27 22:33:04,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 289 transitions, 4279 flow [2024-06-27 22:33:04,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:33:04,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:33:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-27 22:33:04,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-06-27 22:33:04,920 INFO L175 Difference]: Start difference. First operand has 192 places, 260 transitions, 3407 flow. Second operand 6 states and 156 transitions. [2024-06-27 22:33:04,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 289 transitions, 4279 flow [2024-06-27 22:33:05,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 289 transitions, 4122 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:05,108 INFO L231 Difference]: Finished difference. Result has 194 places, 272 transitions, 3623 flow [2024-06-27 22:33:05,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3250, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3623, PETRI_PLACES=194, PETRI_TRANSITIONS=272} [2024-06-27 22:33:05,108 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 142 predicate places. [2024-06-27 22:33:05,108 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 272 transitions, 3623 flow [2024-06-27 22:33:05,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:05,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:05,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:05,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:33:05,110 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:05,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:05,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1293966187, now seen corresponding path program 5 times [2024-06-27 22:33:05,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:05,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368530363] [2024-06-27 22:33:05,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:05,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:05,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:05,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368530363] [2024-06-27 22:33:05,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368530363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:05,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:05,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:33:05,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615114289] [2024-06-27 22:33:05,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:05,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:33:05,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:05,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:33:05,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:33:05,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:05,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 272 transitions, 3623 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:05,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:05,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:05,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:06,370 INFO L124 PetriNetUnfolderBase]: 4695/8201 cut-off events. [2024-06-27 22:33:06,370 INFO L125 PetriNetUnfolderBase]: For 110751/110772 co-relation queries the response was YES. [2024-06-27 22:33:06,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44763 conditions, 8201 events. 4695/8201 cut-off events. For 110751/110772 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 61417 event pairs, 1876 based on Foata normal form. 15/7881 useless extension candidates. Maximal degree in co-relation 44670. Up to 6815 conditions per place. [2024-06-27 22:33:06,448 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 240 selfloop transitions, 36 changer transitions 0/290 dead transitions. [2024-06-27 22:33:06,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 290 transitions, 4357 flow [2024-06-27 22:33:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:33:06,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:33:06,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-27 22:33:06,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471014492753623 [2024-06-27 22:33:06,449 INFO L175 Difference]: Start difference. First operand has 194 places, 272 transitions, 3623 flow. Second operand 6 states and 151 transitions. [2024-06-27 22:33:06,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 290 transitions, 4357 flow [2024-06-27 22:33:06,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 290 transitions, 4211 flow, removed 63 selfloop flow, removed 2 redundant places. [2024-06-27 22:33:06,652 INFO L231 Difference]: Finished difference. Result has 198 places, 276 transitions, 3650 flow [2024-06-27 22:33:06,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3650, PETRI_PLACES=198, PETRI_TRANSITIONS=276} [2024-06-27 22:33:06,652 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 146 predicate places. [2024-06-27 22:33:06,652 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 276 transitions, 3650 flow [2024-06-27 22:33:06,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:06,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:06,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:06,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:33:06,652 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:06,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:06,653 INFO L85 PathProgramCache]: Analyzing trace with hash -220355221, now seen corresponding path program 6 times [2024-06-27 22:33:06,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:06,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351958629] [2024-06-27 22:33:06,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:06,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:06,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:06,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:06,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351958629] [2024-06-27 22:33:06,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351958629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:06,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:06,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:33:06,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985419895] [2024-06-27 22:33:06,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:06,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:33:06,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:06,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:33:06,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:33:06,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:06,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 276 transitions, 3650 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:06,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:06,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:06,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:08,125 INFO L124 PetriNetUnfolderBase]: 4692/8211 cut-off events. [2024-06-27 22:33:08,125 INFO L125 PetriNetUnfolderBase]: For 104957/104978 co-relation queries the response was YES. [2024-06-27 22:33:08,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43937 conditions, 8211 events. 4692/8211 cut-off events. For 104957/104978 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 61674 event pairs, 1859 based on Foata normal form. 15/7893 useless extension candidates. Maximal degree in co-relation 43842. Up to 6827 conditions per place. [2024-06-27 22:33:08,193 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 250 selfloop transitions, 25 changer transitions 0/289 dead transitions. [2024-06-27 22:33:08,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 289 transitions, 4232 flow [2024-06-27 22:33:08,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:33:08,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:33:08,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 22:33:08,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398550724637681 [2024-06-27 22:33:08,195 INFO L175 Difference]: Start difference. First operand has 198 places, 276 transitions, 3650 flow. Second operand 6 states and 149 transitions. [2024-06-27 22:33:08,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 289 transitions, 4232 flow [2024-06-27 22:33:08,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 289 transitions, 4036 flow, removed 54 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:08,368 INFO L231 Difference]: Finished difference. Result has 200 places, 276 transitions, 3511 flow [2024-06-27 22:33:08,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3454, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3511, PETRI_PLACES=200, PETRI_TRANSITIONS=276} [2024-06-27 22:33:08,369 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 148 predicate places. [2024-06-27 22:33:08,369 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 276 transitions, 3511 flow [2024-06-27 22:33:08,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:08,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:08,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:08,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:33:08,369 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:08,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:08,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1077848899, now seen corresponding path program 1 times [2024-06-27 22:33:08,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:08,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174563360] [2024-06-27 22:33:08,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:08,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:08,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:08,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174563360] [2024-06-27 22:33:08,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174563360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:08,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:08,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:08,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57679959] [2024-06-27 22:33:08,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:08,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:08,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:08,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:08,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:08,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:08,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 276 transitions, 3511 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:08,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:08,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:08,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:10,137 INFO L124 PetriNetUnfolderBase]: 4954/8669 cut-off events. [2024-06-27 22:33:10,138 INFO L125 PetriNetUnfolderBase]: For 116469/116490 co-relation queries the response was YES. [2024-06-27 22:33:10,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46168 conditions, 8669 events. 4954/8669 cut-off events. For 116469/116490 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 65366 event pairs, 1846 based on Foata normal form. 32/8340 useless extension candidates. Maximal degree in co-relation 46073. Up to 6729 conditions per place. [2024-06-27 22:33:10,219 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 277 selfloop transitions, 29 changer transitions 0/320 dead transitions. [2024-06-27 22:33:10,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 320 transitions, 4405 flow [2024-06-27 22:33:10,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:33:10,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:33:10,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-27 22:33:10,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5962732919254659 [2024-06-27 22:33:10,221 INFO L175 Difference]: Start difference. First operand has 200 places, 276 transitions, 3511 flow. Second operand 7 states and 192 transitions. [2024-06-27 22:33:10,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 320 transitions, 4405 flow [2024-06-27 22:33:10,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 320 transitions, 4272 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:10,520 INFO L231 Difference]: Finished difference. Result has 202 places, 279 transitions, 3500 flow [2024-06-27 22:33:10,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3500, PETRI_PLACES=202, PETRI_TRANSITIONS=279} [2024-06-27 22:33:10,520 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 150 predicate places. [2024-06-27 22:33:10,520 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 279 transitions, 3500 flow [2024-06-27 22:33:10,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:10,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:10,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:10,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:33:10,521 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:10,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:10,521 INFO L85 PathProgramCache]: Analyzing trace with hash 255886099, now seen corresponding path program 2 times [2024-06-27 22:33:10,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:10,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763064300] [2024-06-27 22:33:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:10,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:10,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:10,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:10,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763064300] [2024-06-27 22:33:10,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763064300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:10,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:10,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:10,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832951616] [2024-06-27 22:33:10,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:10,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:10,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:10,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:10,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:10,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:10,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 279 transitions, 3500 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:10,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:10,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:10,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:12,311 INFO L124 PetriNetUnfolderBase]: 5194/9091 cut-off events. [2024-06-27 22:33:12,312 INFO L125 PetriNetUnfolderBase]: For 128459/128459 co-relation queries the response was YES. [2024-06-27 22:33:12,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49071 conditions, 9091 events. 5194/9091 cut-off events. For 128459/128459 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 69371 event pairs, 2248 based on Foata normal form. 9/8751 useless extension candidates. Maximal degree in co-relation 48975. Up to 6899 conditions per place. [2024-06-27 22:33:12,402 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 286 selfloop transitions, 31 changer transitions 0/331 dead transitions. [2024-06-27 22:33:12,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 331 transitions, 4585 flow [2024-06-27 22:33:12,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:12,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-27 22:33:12,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5842391304347826 [2024-06-27 22:33:12,404 INFO L175 Difference]: Start difference. First operand has 202 places, 279 transitions, 3500 flow. Second operand 8 states and 215 transitions. [2024-06-27 22:33:12,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 331 transitions, 4585 flow [2024-06-27 22:33:12,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 331 transitions, 4511 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:12,623 INFO L231 Difference]: Finished difference. Result has 207 places, 282 transitions, 3546 flow [2024-06-27 22:33:12,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3427, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3546, PETRI_PLACES=207, PETRI_TRANSITIONS=282} [2024-06-27 22:33:12,624 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 155 predicate places. [2024-06-27 22:33:12,624 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 282 transitions, 3546 flow [2024-06-27 22:33:12,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:12,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:12,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:12,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:33:12,625 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:12,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:12,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1293719923, now seen corresponding path program 1 times [2024-06-27 22:33:12,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:12,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072499314] [2024-06-27 22:33:12,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:12,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:13,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:13,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:13,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072499314] [2024-06-27 22:33:13,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072499314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:13,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:13,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:13,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928193779] [2024-06-27 22:33:13,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:13,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:13,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:13,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:13,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:13,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:33:13,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 282 transitions, 3546 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:13,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:13,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:33:13,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:14,827 INFO L124 PetriNetUnfolderBase]: 5227/9155 cut-off events. [2024-06-27 22:33:14,827 INFO L125 PetriNetUnfolderBase]: For 125734/125734 co-relation queries the response was YES. [2024-06-27 22:33:14,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49367 conditions, 9155 events. 5227/9155 cut-off events. For 125734/125734 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 70141 event pairs, 2304 based on Foata normal form. 2/8792 useless extension candidates. Maximal degree in co-relation 49268. Up to 7496 conditions per place. [2024-06-27 22:33:14,934 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 268 selfloop transitions, 24 changer transitions 0/305 dead transitions. [2024-06-27 22:33:14,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 305 transitions, 4274 flow [2024-06-27 22:33:14,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:33:14,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:33:14,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-27 22:33:14,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2024-06-27 22:33:14,936 INFO L175 Difference]: Start difference. First operand has 207 places, 282 transitions, 3546 flow. Second operand 6 states and 148 transitions. [2024-06-27 22:33:14,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 305 transitions, 4274 flow [2024-06-27 22:33:15,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 305 transitions, 4240 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:15,169 INFO L231 Difference]: Finished difference. Result has 210 places, 284 transitions, 3596 flow [2024-06-27 22:33:15,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3512, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3596, PETRI_PLACES=210, PETRI_TRANSITIONS=284} [2024-06-27 22:33:15,169 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 158 predicate places. [2024-06-27 22:33:15,169 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 284 transitions, 3596 flow [2024-06-27 22:33:15,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:15,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:15,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:15,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:33:15,170 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:15,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:15,170 INFO L85 PathProgramCache]: Analyzing trace with hash -214602613, now seen corresponding path program 3 times [2024-06-27 22:33:15,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:15,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263682686] [2024-06-27 22:33:15,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:15,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:15,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:15,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263682686] [2024-06-27 22:33:15,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263682686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:15,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:15,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:15,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142865114] [2024-06-27 22:33:15,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:15,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:15,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:15,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:15,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:15,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:15,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 284 transitions, 3596 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:15,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:15,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:15,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:16,939 INFO L124 PetriNetUnfolderBase]: 5209/9108 cut-off events. [2024-06-27 22:33:16,939 INFO L125 PetriNetUnfolderBase]: For 127429/127429 co-relation queries the response was YES. [2024-06-27 22:33:16,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49081 conditions, 9108 events. 5209/9108 cut-off events. For 127429/127429 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 69701 event pairs, 2357 based on Foata normal form. 9/8758 useless extension candidates. Maximal degree in co-relation 48981. Up to 7383 conditions per place. [2024-06-27 22:33:17,017 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 281 selfloop transitions, 18 changer transitions 0/313 dead transitions. [2024-06-27 22:33:17,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 313 transitions, 4407 flow [2024-06-27 22:33:17,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:33:17,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:33:17,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 22:33:17,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546583850931677 [2024-06-27 22:33:17,019 INFO L175 Difference]: Start difference. First operand has 210 places, 284 transitions, 3596 flow. Second operand 7 states and 176 transitions. [2024-06-27 22:33:17,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 313 transitions, 4407 flow [2024-06-27 22:33:17,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 313 transitions, 4359 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:17,216 INFO L231 Difference]: Finished difference. Result has 213 places, 285 transitions, 3603 flow [2024-06-27 22:33:17,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3550, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3603, PETRI_PLACES=213, PETRI_TRANSITIONS=285} [2024-06-27 22:33:17,217 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 161 predicate places. [2024-06-27 22:33:17,217 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 285 transitions, 3603 flow [2024-06-27 22:33:17,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:17,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:17,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:17,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:33:17,218 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:17,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1314464321, now seen corresponding path program 1 times [2024-06-27 22:33:17,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:17,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054513446] [2024-06-27 22:33:17,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:17,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:17,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:17,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:17,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054513446] [2024-06-27 22:33:17,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054513446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:17,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:17,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:17,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475161079] [2024-06-27 22:33:17,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:17,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:17,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:17,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:17,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:17,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:33:17,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 285 transitions, 3603 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:17,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:17,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:33:17,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:18,984 INFO L124 PetriNetUnfolderBase]: 5704/9871 cut-off events. [2024-06-27 22:33:18,985 INFO L125 PetriNetUnfolderBase]: For 132195/132216 co-relation queries the response was YES. [2024-06-27 22:33:19,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53513 conditions, 9871 events. 5704/9871 cut-off events. For 132195/132216 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 74241 event pairs, 1402 based on Foata normal form. 15/9560 useless extension candidates. Maximal degree in co-relation 53411. Up to 6926 conditions per place. [2024-06-27 22:33:19,103 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 245 selfloop transitions, 98 changer transitions 0/353 dead transitions. [2024-06-27 22:33:19,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 353 transitions, 4974 flow [2024-06-27 22:33:19,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:19,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2024-06-27 22:33:19,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5304347826086957 [2024-06-27 22:33:19,105 INFO L175 Difference]: Start difference. First operand has 213 places, 285 transitions, 3603 flow. Second operand 10 states and 244 transitions. [2024-06-27 22:33:19,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 353 transitions, 4974 flow [2024-06-27 22:33:19,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 353 transitions, 4936 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:19,369 INFO L231 Difference]: Finished difference. Result has 220 places, 306 transitions, 4237 flow [2024-06-27 22:33:19,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3565, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4237, PETRI_PLACES=220, PETRI_TRANSITIONS=306} [2024-06-27 22:33:19,369 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 168 predicate places. [2024-06-27 22:33:19,369 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 306 transitions, 4237 flow [2024-06-27 22:33:19,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:19,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:19,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:19,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:33:19,370 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:19,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:19,370 INFO L85 PathProgramCache]: Analyzing trace with hash 952720507, now seen corresponding path program 2 times [2024-06-27 22:33:19,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:19,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090624006] [2024-06-27 22:33:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:19,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:19,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:19,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090624006] [2024-06-27 22:33:19,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090624006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:19,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:19,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:19,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119213995] [2024-06-27 22:33:19,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:19,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:19,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:19,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:19,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:19,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:19,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 306 transitions, 4237 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:19,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:19,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:19,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:21,060 INFO L124 PetriNetUnfolderBase]: 5337/9332 cut-off events. [2024-06-27 22:33:21,061 INFO L125 PetriNetUnfolderBase]: For 153509/153576 co-relation queries the response was YES. [2024-06-27 22:33:21,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54175 conditions, 9332 events. 5337/9332 cut-off events. For 153509/153576 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 71090 event pairs, 1567 based on Foata normal form. 15/8923 useless extension candidates. Maximal degree in co-relation 54070. Up to 6452 conditions per place. [2024-06-27 22:33:21,149 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 233 selfloop transitions, 105 changer transitions 0/353 dead transitions. [2024-06-27 22:33:21,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 353 transitions, 5376 flow [2024-06-27 22:33:21,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:21,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:21,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-27 22:33:21,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592391304347826 [2024-06-27 22:33:21,151 INFO L175 Difference]: Start difference. First operand has 220 places, 306 transitions, 4237 flow. Second operand 8 states and 218 transitions. [2024-06-27 22:33:21,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 353 transitions, 5376 flow [2024-06-27 22:33:21,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 353 transitions, 5032 flow, removed 136 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:21,453 INFO L231 Difference]: Finished difference. Result has 224 places, 315 transitions, 4335 flow [2024-06-27 22:33:21,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3987, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4335, PETRI_PLACES=224, PETRI_TRANSITIONS=315} [2024-06-27 22:33:21,454 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 172 predicate places. [2024-06-27 22:33:21,454 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 315 transitions, 4335 flow [2024-06-27 22:33:21,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:21,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:21,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:21,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:33:21,455 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:21,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:21,455 INFO L85 PathProgramCache]: Analyzing trace with hash 960309307, now seen corresponding path program 3 times [2024-06-27 22:33:21,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:21,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931942359] [2024-06-27 22:33:21,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:21,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:21,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:21,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:21,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931942359] [2024-06-27 22:33:21,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931942359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:21,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:21,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:21,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456883756] [2024-06-27 22:33:21,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:21,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:21,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:21,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:21,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:21,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:21,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 315 transitions, 4335 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:21,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:21,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:21,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:23,149 INFO L124 PetriNetUnfolderBase]: 5358/9429 cut-off events. [2024-06-27 22:33:23,150 INFO L125 PetriNetUnfolderBase]: For 150738/150805 co-relation queries the response was YES. [2024-06-27 22:33:23,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54669 conditions, 9429 events. 5358/9429 cut-off events. For 150738/150805 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 72479 event pairs, 1430 based on Foata normal form. 15/9021 useless extension candidates. Maximal degree in co-relation 54563. Up to 6572 conditions per place. [2024-06-27 22:33:23,254 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 260 selfloop transitions, 90 changer transitions 0/365 dead transitions. [2024-06-27 22:33:23,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 365 transitions, 5400 flow [2024-06-27 22:33:23,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:23,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:23,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-27 22:33:23,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-06-27 22:33:23,255 INFO L175 Difference]: Start difference. First operand has 224 places, 315 transitions, 4335 flow. Second operand 8 states and 212 transitions. [2024-06-27 22:33:23,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 365 transitions, 5400 flow [2024-06-27 22:33:23,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 365 transitions, 5139 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:23,549 INFO L231 Difference]: Finished difference. Result has 227 places, 331 transitions, 4482 flow [2024-06-27 22:33:23,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4097, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4482, PETRI_PLACES=227, PETRI_TRANSITIONS=331} [2024-06-27 22:33:23,550 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 175 predicate places. [2024-06-27 22:33:23,550 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 331 transitions, 4482 flow [2024-06-27 22:33:23,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:23,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:23,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:23,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:33:23,551 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:23,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:23,551 INFO L85 PathProgramCache]: Analyzing trace with hash -114623268, now seen corresponding path program 1 times [2024-06-27 22:33:23,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:23,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568780294] [2024-06-27 22:33:23,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:23,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:23,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:23,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:23,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568780294] [2024-06-27 22:33:23,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568780294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:23,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:23,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:23,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501993918] [2024-06-27 22:33:23,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:23,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:23,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:23,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:23,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:24,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:24,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 331 transitions, 4482 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:24,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:24,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:24,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:25,461 INFO L124 PetriNetUnfolderBase]: 5513/9668 cut-off events. [2024-06-27 22:33:25,462 INFO L125 PetriNetUnfolderBase]: For 167416/167483 co-relation queries the response was YES. [2024-06-27 22:33:25,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56990 conditions, 9668 events. 5513/9668 cut-off events. For 167416/167483 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 74700 event pairs, 1935 based on Foata normal form. 19/9296 useless extension candidates. Maximal degree in co-relation 56883. Up to 7603 conditions per place. [2024-06-27 22:33:25,564 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 305 selfloop transitions, 56 changer transitions 0/376 dead transitions. [2024-06-27 22:33:25,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 376 transitions, 5661 flow [2024-06-27 22:33:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:25,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-27 22:33:25,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-06-27 22:33:25,566 INFO L175 Difference]: Start difference. First operand has 227 places, 331 transitions, 4482 flow. Second operand 8 states and 212 transitions. [2024-06-27 22:33:25,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 376 transitions, 5661 flow [2024-06-27 22:33:25,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 376 transitions, 5446 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:25,946 INFO L231 Difference]: Finished difference. Result has 232 places, 338 transitions, 4527 flow [2024-06-27 22:33:25,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4267, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4527, PETRI_PLACES=232, PETRI_TRANSITIONS=338} [2024-06-27 22:33:25,947 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 180 predicate places. [2024-06-27 22:33:25,947 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 338 transitions, 4527 flow [2024-06-27 22:33:25,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:25,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:25,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:25,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:33:25,947 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:25,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:25,948 INFO L85 PathProgramCache]: Analyzing trace with hash -104636393, now seen corresponding path program 4 times [2024-06-27 22:33:25,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:25,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388001187] [2024-06-27 22:33:25,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:25,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:26,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:26,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388001187] [2024-06-27 22:33:26,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388001187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:26,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:26,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:26,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390602265] [2024-06-27 22:33:26,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:26,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:26,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:26,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:26,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:26,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:26,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 338 transitions, 4527 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:26,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:26,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:26,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:27,921 INFO L124 PetriNetUnfolderBase]: 5896/10304 cut-off events. [2024-06-27 22:33:27,922 INFO L125 PetriNetUnfolderBase]: For 186667/186735 co-relation queries the response was YES. [2024-06-27 22:33:27,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61901 conditions, 10304 events. 5896/10304 cut-off events. For 186667/186735 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 79673 event pairs, 1429 based on Foata normal form. 1/9827 useless extension candidates. Maximal degree in co-relation 61792. Up to 6454 conditions per place. [2024-06-27 22:33:28,007 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 235 selfloop transitions, 150 changer transitions 0/400 dead transitions. [2024-06-27 22:33:28,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 400 transitions, 6148 flow [2024-06-27 22:33:28,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:33:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:33:28,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-06-27 22:33:28,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6118012422360248 [2024-06-27 22:33:28,008 INFO L175 Difference]: Start difference. First operand has 232 places, 338 transitions, 4527 flow. Second operand 7 states and 197 transitions. [2024-06-27 22:33:28,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 400 transitions, 6148 flow [2024-06-27 22:33:28,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 400 transitions, 6071 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:28,354 INFO L231 Difference]: Finished difference. Result has 236 places, 363 transitions, 5441 flow [2024-06-27 22:33:28,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4454, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5441, PETRI_PLACES=236, PETRI_TRANSITIONS=363} [2024-06-27 22:33:28,355 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 184 predicate places. [2024-06-27 22:33:28,355 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 363 transitions, 5441 flow [2024-06-27 22:33:28,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:28,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:28,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:28,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:33:28,356 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:28,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:28,356 INFO L85 PathProgramCache]: Analyzing trace with hash -104278343, now seen corresponding path program 5 times [2024-06-27 22:33:28,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:28,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270109705] [2024-06-27 22:33:28,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:28,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:28,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:28,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270109705] [2024-06-27 22:33:28,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270109705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:28,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:28,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:28,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637026413] [2024-06-27 22:33:28,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:28,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:28,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:28,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:28,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:28,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:28,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 363 transitions, 5441 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:28,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:28,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:28,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:30,165 INFO L124 PetriNetUnfolderBase]: 5987/10419 cut-off events. [2024-06-27 22:33:30,165 INFO L125 PetriNetUnfolderBase]: For 225213/225283 co-relation queries the response was YES. [2024-06-27 22:33:30,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67864 conditions, 10419 events. 5987/10419 cut-off events. For 225213/225283 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 80272 event pairs, 1379 based on Foata normal form. 1/9935 useless extension candidates. Maximal degree in co-relation 67752. Up to 6556 conditions per place. [2024-06-27 22:33:30,286 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 228 selfloop transitions, 166 changer transitions 0/409 dead transitions. [2024-06-27 22:33:30,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 409 transitions, 6894 flow [2024-06-27 22:33:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:33:30,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:33:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-06-27 22:33:30,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6055900621118012 [2024-06-27 22:33:30,288 INFO L175 Difference]: Start difference. First operand has 236 places, 363 transitions, 5441 flow. Second operand 7 states and 195 transitions. [2024-06-27 22:33:30,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 409 transitions, 6894 flow [2024-06-27 22:33:30,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 409 transitions, 6594 flow, removed 115 selfloop flow, removed 2 redundant places. [2024-06-27 22:33:30,847 INFO L231 Difference]: Finished difference. Result has 243 places, 376 transitions, 5963 flow [2024-06-27 22:33:30,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5205, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5963, PETRI_PLACES=243, PETRI_TRANSITIONS=376} [2024-06-27 22:33:30,847 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 191 predicate places. [2024-06-27 22:33:30,847 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 376 transitions, 5963 flow [2024-06-27 22:33:30,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:30,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:30,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:30,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:33:30,848 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:30,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:30,848 INFO L85 PathProgramCache]: Analyzing trace with hash -98713719, now seen corresponding path program 1 times [2024-06-27 22:33:30,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:30,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846888034] [2024-06-27 22:33:30,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:30,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:31,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:31,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:31,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846888034] [2024-06-27 22:33:31,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846888034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:31,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:31,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:31,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749000646] [2024-06-27 22:33:31,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:31,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:31,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:31,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:31,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:31,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:31,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 376 transitions, 5963 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:31,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:31,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:31,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:32,772 INFO L124 PetriNetUnfolderBase]: 5946/10284 cut-off events. [2024-06-27 22:33:32,772 INFO L125 PetriNetUnfolderBase]: For 224958/225045 co-relation queries the response was YES. [2024-06-27 22:33:32,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68174 conditions, 10284 events. 5946/10284 cut-off events. For 224958/225045 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 79332 event pairs, 2129 based on Foata normal form. 16/9880 useless extension candidates. Maximal degree in co-relation 68058. Up to 8579 conditions per place. [2024-06-27 22:33:32,891 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 347 selfloop transitions, 29 changer transitions 0/391 dead transitions. [2024-06-27 22:33:32,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 391 transitions, 6826 flow [2024-06-27 22:33:32,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:33:32,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:33:32,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-27 22:33:32,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-06-27 22:33:32,892 INFO L175 Difference]: Start difference. First operand has 243 places, 376 transitions, 5963 flow. Second operand 5 states and 130 transitions. [2024-06-27 22:33:32,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 391 transitions, 6826 flow [2024-06-27 22:33:33,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 391 transitions, 6581 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:33,512 INFO L231 Difference]: Finished difference. Result has 245 places, 379 transitions, 5877 flow [2024-06-27 22:33:33,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5718, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5877, PETRI_PLACES=245, PETRI_TRANSITIONS=379} [2024-06-27 22:33:33,513 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 193 predicate places. [2024-06-27 22:33:33,513 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 379 transitions, 5877 flow [2024-06-27 22:33:33,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:33,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:33,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:33,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:33:33,514 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:33,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:33,514 INFO L85 PathProgramCache]: Analyzing trace with hash 121075219, now seen corresponding path program 2 times [2024-06-27 22:33:33,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:33,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892031496] [2024-06-27 22:33:33,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:33,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:33,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:33,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:33,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892031496] [2024-06-27 22:33:33,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892031496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:33,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:33,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:33,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137495983] [2024-06-27 22:33:33,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:33,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:33,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:33,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:33,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:33,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:33,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 379 transitions, 5877 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:33,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:33,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:33,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:35,529 INFO L124 PetriNetUnfolderBase]: 5929/10248 cut-off events. [2024-06-27 22:33:35,530 INFO L125 PetriNetUnfolderBase]: For 219486/219571 co-relation queries the response was YES. [2024-06-27 22:33:35,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67098 conditions, 10248 events. 5929/10248 cut-off events. For 219486/219571 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 78882 event pairs, 2037 based on Foata normal form. 16/9853 useless extension candidates. Maximal degree in co-relation 66981. Up to 8528 conditions per place. [2024-06-27 22:33:35,636 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 348 selfloop transitions, 35 changer transitions 0/398 dead transitions. [2024-06-27 22:33:35,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 398 transitions, 6824 flow [2024-06-27 22:33:35,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:33:35,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:33:35,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-27 22:33:35,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5695652173913044 [2024-06-27 22:33:35,637 INFO L175 Difference]: Start difference. First operand has 245 places, 379 transitions, 5877 flow. Second operand 5 states and 131 transitions. [2024-06-27 22:33:35,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 398 transitions, 6824 flow [2024-06-27 22:33:36,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 398 transitions, 6722 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:36,148 INFO L231 Difference]: Finished difference. Result has 247 places, 385 transitions, 6038 flow [2024-06-27 22:33:36,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5775, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6038, PETRI_PLACES=247, PETRI_TRANSITIONS=385} [2024-06-27 22:33:36,149 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 195 predicate places. [2024-06-27 22:33:36,149 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 385 transitions, 6038 flow [2024-06-27 22:33:36,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:36,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:36,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:36,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:33:36,150 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:36,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:36,150 INFO L85 PathProgramCache]: Analyzing trace with hash 120658145, now seen corresponding path program 6 times [2024-06-27 22:33:36,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:36,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230186635] [2024-06-27 22:33:36,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:36,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:36,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:36,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:36,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230186635] [2024-06-27 22:33:36,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230186635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:36,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:36,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:36,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883167250] [2024-06-27 22:33:36,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:36,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:36,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:36,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:36,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:36,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:36,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 385 transitions, 6038 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:36,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:36,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:36,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:38,068 INFO L124 PetriNetUnfolderBase]: 5966/10382 cut-off events. [2024-06-27 22:33:38,069 INFO L125 PetriNetUnfolderBase]: For 214858/214928 co-relation queries the response was YES. [2024-06-27 22:33:38,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67542 conditions, 10382 events. 5966/10382 cut-off events. For 214858/214928 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 80055 event pairs, 1354 based on Foata normal form. 3/9911 useless extension candidates. Maximal degree in co-relation 67424. Up to 7401 conditions per place. [2024-06-27 22:33:38,192 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 320 selfloop transitions, 74 changer transitions 0/409 dead transitions. [2024-06-27 22:33:38,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 409 transitions, 6988 flow [2024-06-27 22:33:38,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:33:38,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:33:38,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-27 22:33:38,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 22:33:38,193 INFO L175 Difference]: Start difference. First operand has 247 places, 385 transitions, 6038 flow. Second operand 6 states and 161 transitions. [2024-06-27 22:33:38,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 409 transitions, 6988 flow [2024-06-27 22:33:38,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 409 transitions, 6846 flow, removed 52 selfloop flow, removed 2 redundant places. [2024-06-27 22:33:38,934 INFO L231 Difference]: Finished difference. Result has 251 places, 385 transitions, 6057 flow [2024-06-27 22:33:38,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5896, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6057, PETRI_PLACES=251, PETRI_TRANSITIONS=385} [2024-06-27 22:33:38,934 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 199 predicate places. [2024-06-27 22:33:38,934 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 385 transitions, 6057 flow [2024-06-27 22:33:38,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:38,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:38,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:38,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:33:38,935 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:38,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:38,935 INFO L85 PathProgramCache]: Analyzing trace with hash 120779262, now seen corresponding path program 2 times [2024-06-27 22:33:38,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:38,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762495194] [2024-06-27 22:33:38,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:38,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:39,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:39,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762495194] [2024-06-27 22:33:39,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762495194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:39,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:39,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:39,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010759492] [2024-06-27 22:33:39,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:39,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:39,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:39,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:39,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:39,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:39,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 385 transitions, 6057 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:39,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:39,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:39,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:41,039 INFO L124 PetriNetUnfolderBase]: 5925/10226 cut-off events. [2024-06-27 22:33:41,039 INFO L125 PetriNetUnfolderBase]: For 223307/223394 co-relation queries the response was YES. [2024-06-27 22:33:41,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67468 conditions, 10226 events. 5925/10226 cut-off events. For 223307/223394 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 78540 event pairs, 2118 based on Foata normal form. 17/9832 useless extension candidates. Maximal degree in co-relation 67349. Up to 8425 conditions per place. [2024-06-27 22:33:41,172 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 358 selfloop transitions, 31 changer transitions 0/404 dead transitions. [2024-06-27 22:33:41,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 404 transitions, 6975 flow [2024-06-27 22:33:41,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:33:41,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:33:41,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-27 22:33:41,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5615942028985508 [2024-06-27 22:33:41,174 INFO L175 Difference]: Start difference. First operand has 251 places, 385 transitions, 6057 flow. Second operand 6 states and 155 transitions. [2024-06-27 22:33:41,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 404 transitions, 6975 flow [2024-06-27 22:33:41,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 404 transitions, 6736 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:41,776 INFO L231 Difference]: Finished difference. Result has 252 places, 385 transitions, 5894 flow [2024-06-27 22:33:41,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5818, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5894, PETRI_PLACES=252, PETRI_TRANSITIONS=385} [2024-06-27 22:33:41,776 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 200 predicate places. [2024-06-27 22:33:41,777 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 385 transitions, 5894 flow [2024-06-27 22:33:41,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:41,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:41,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:41,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:33:41,777 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:41,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:41,778 INFO L85 PathProgramCache]: Analyzing trace with hash 120779045, now seen corresponding path program 7 times [2024-06-27 22:33:41,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:41,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934725742] [2024-06-27 22:33:41,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:41,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:41,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:41,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:41,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934725742] [2024-06-27 22:33:41,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934725742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:41,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:41,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:41,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293488129] [2024-06-27 22:33:41,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:41,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:41,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:41,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:41,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:41,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:41,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 385 transitions, 5894 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:41,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:41,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:41,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:43,745 INFO L124 PetriNetUnfolderBase]: 5949/10298 cut-off events. [2024-06-27 22:33:43,745 INFO L125 PetriNetUnfolderBase]: For 214574/214644 co-relation queries the response was YES. [2024-06-27 22:33:43,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66715 conditions, 10298 events. 5949/10298 cut-off events. For 214574/214644 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 78865 event pairs, 1397 based on Foata normal form. 3/9839 useless extension candidates. Maximal degree in co-relation 66595. Up to 6828 conditions per place. [2024-06-27 22:33:43,852 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 298 selfloop transitions, 99 changer transitions 0/412 dead transitions. [2024-06-27 22:33:43,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 412 transitions, 6955 flow [2024-06-27 22:33:43,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:33:43,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:33:43,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-06-27 22:33:43,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5978260869565217 [2024-06-27 22:33:43,853 INFO L175 Difference]: Start difference. First operand has 252 places, 385 transitions, 5894 flow. Second operand 6 states and 165 transitions. [2024-06-27 22:33:43,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 412 transitions, 6955 flow [2024-06-27 22:33:44,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 412 transitions, 6869 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:44,455 INFO L231 Difference]: Finished difference. Result has 256 places, 386 transitions, 6095 flow [2024-06-27 22:33:44,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5808, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6095, PETRI_PLACES=256, PETRI_TRANSITIONS=386} [2024-06-27 22:33:44,457 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 204 predicate places. [2024-06-27 22:33:44,457 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 386 transitions, 6095 flow [2024-06-27 22:33:44,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:44,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:44,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:44,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:33:44,459 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:44,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:44,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1216328923, now seen corresponding path program 8 times [2024-06-27 22:33:44,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:44,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364992424] [2024-06-27 22:33:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:44,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:44,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:44,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364992424] [2024-06-27 22:33:44,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364992424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:44,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:44,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:44,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37409992] [2024-06-27 22:33:44,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:44,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:44,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:44,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:44,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:44,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:44,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 386 transitions, 6095 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:44,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:44,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:44,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:46,490 INFO L124 PetriNetUnfolderBase]: 5985/10399 cut-off events. [2024-06-27 22:33:46,491 INFO L125 PetriNetUnfolderBase]: For 226270/226342 co-relation queries the response was YES. [2024-06-27 22:33:46,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68473 conditions, 10399 events. 5985/10399 cut-off events. For 226270/226342 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 80055 event pairs, 1510 based on Foata normal form. 1/9914 useless extension candidates. Maximal degree in co-relation 68351. Up to 8208 conditions per place. [2024-06-27 22:33:46,619 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 323 selfloop transitions, 100 changer transitions 0/438 dead transitions. [2024-06-27 22:33:46,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 438 transitions, 7537 flow [2024-06-27 22:33:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:46,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-27 22:33:46,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.572463768115942 [2024-06-27 22:33:46,620 INFO L175 Difference]: Start difference. First operand has 256 places, 386 transitions, 6095 flow. Second operand 9 states and 237 transitions. [2024-06-27 22:33:46,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 438 transitions, 7537 flow [2024-06-27 22:33:47,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 438 transitions, 7335 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:47,486 INFO L231 Difference]: Finished difference. Result has 263 places, 401 transitions, 6520 flow [2024-06-27 22:33:47,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5893, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6520, PETRI_PLACES=263, PETRI_TRANSITIONS=401} [2024-06-27 22:33:47,487 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 211 predicate places. [2024-06-27 22:33:47,487 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 401 transitions, 6520 flow [2024-06-27 22:33:47,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:47,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:47,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:47,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:33:47,488 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:47,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:47,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1216120386, now seen corresponding path program 3 times [2024-06-27 22:33:47,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:47,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830703158] [2024-06-27 22:33:47,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:47,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:47,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:47,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:47,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830703158] [2024-06-27 22:33:47,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830703158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:47,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:47,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:47,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165164287] [2024-06-27 22:33:47,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:47,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:47,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:47,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:47,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:47,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:47,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 401 transitions, 6520 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:47,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:47,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:47,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:49,913 INFO L124 PetriNetUnfolderBase]: 6066/10499 cut-off events. [2024-06-27 22:33:49,914 INFO L125 PetriNetUnfolderBase]: For 254741/254830 co-relation queries the response was YES. [2024-06-27 22:33:49,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71212 conditions, 10499 events. 6066/10499 cut-off events. For 254741/254830 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 81088 event pairs, 2131 based on Foata normal form. 19/10069 useless extension candidates. Maximal degree in co-relation 71088. Up to 8647 conditions per place. [2024-06-27 22:33:50,053 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 397 selfloop transitions, 30 changer transitions 0/442 dead transitions. [2024-06-27 22:33:50,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 442 transitions, 7707 flow [2024-06-27 22:33:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:50,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 22:33:50,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-27 22:33:50,055 INFO L175 Difference]: Start difference. First operand has 263 places, 401 transitions, 6520 flow. Second operand 8 states and 207 transitions. [2024-06-27 22:33:50,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 442 transitions, 7707 flow [2024-06-27 22:33:50,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 442 transitions, 7147 flow, removed 139 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:50,767 INFO L231 Difference]: Finished difference. Result has 269 places, 406 transitions, 6130 flow [2024-06-27 22:33:50,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5960, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6130, PETRI_PLACES=269, PETRI_TRANSITIONS=406} [2024-06-27 22:33:50,768 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 217 predicate places. [2024-06-27 22:33:50,768 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 406 transitions, 6130 flow [2024-06-27 22:33:50,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:50,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:50,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:50,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:33:50,768 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:50,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:50,769 INFO L85 PathProgramCache]: Analyzing trace with hash -959619876, now seen corresponding path program 4 times [2024-06-27 22:33:50,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:50,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643455685] [2024-06-27 22:33:50,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:50,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:51,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:51,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:51,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643455685] [2024-06-27 22:33:51,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643455685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:51,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:51,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:51,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067282966] [2024-06-27 22:33:51,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:51,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:51,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:51,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:51,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:51,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:51,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 406 transitions, 6130 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:51,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:51,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:51,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:53,218 INFO L124 PetriNetUnfolderBase]: 6325/10900 cut-off events. [2024-06-27 22:33:53,218 INFO L125 PetriNetUnfolderBase]: For 253898/253987 co-relation queries the response was YES. [2024-06-27 22:33:53,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72530 conditions, 10900 events. 6325/10900 cut-off events. For 253898/253987 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 83817 event pairs, 2221 based on Foata normal form. 17/10456 useless extension candidates. Maximal degree in co-relation 72404. Up to 8570 conditions per place. [2024-06-27 22:33:53,354 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 404 selfloop transitions, 41 changer transitions 0/460 dead transitions. [2024-06-27 22:33:53,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 460 transitions, 7445 flow [2024-06-27 22:33:53,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:53,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:53,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-06-27 22:33:53,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5978260869565217 [2024-06-27 22:33:53,356 INFO L175 Difference]: Start difference. First operand has 269 places, 406 transitions, 6130 flow. Second operand 8 states and 220 transitions. [2024-06-27 22:33:53,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 460 transitions, 7445 flow [2024-06-27 22:33:54,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 460 transitions, 7362 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:54,047 INFO L231 Difference]: Finished difference. Result has 272 places, 411 transitions, 6236 flow [2024-06-27 22:33:54,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6047, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6236, PETRI_PLACES=272, PETRI_TRANSITIONS=411} [2024-06-27 22:33:54,048 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 220 predicate places. [2024-06-27 22:33:54,048 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 411 transitions, 6236 flow [2024-06-27 22:33:54,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:54,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:54,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:54,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:33:54,049 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:54,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:54,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1215970873, now seen corresponding path program 9 times [2024-06-27 22:33:54,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:54,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640586529] [2024-06-27 22:33:54,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:54,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:54,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:54,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:54,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640586529] [2024-06-27 22:33:54,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640586529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:54,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:54,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:54,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645891177] [2024-06-27 22:33:54,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:54,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:54,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:54,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:54,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:54,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:54,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 411 transitions, 6236 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:54,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:54,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:54,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:56,369 INFO L124 PetriNetUnfolderBase]: 6356/11047 cut-off events. [2024-06-27 22:33:56,370 INFO L125 PetriNetUnfolderBase]: For 259226/259298 co-relation queries the response was YES. [2024-06-27 22:33:56,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73264 conditions, 11047 events. 6356/11047 cut-off events. For 259226/259298 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 85846 event pairs, 1611 based on Foata normal form. 1/10536 useless extension candidates. Maximal degree in co-relation 73137. Up to 8736 conditions per place. [2024-06-27 22:33:56,477 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 325 selfloop transitions, 98 changer transitions 0/438 dead transitions. [2024-06-27 22:33:56,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 438 transitions, 7186 flow [2024-06-27 22:33:56,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:33:56,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:33:56,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-27 22:33:56,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2024-06-27 22:33:56,479 INFO L175 Difference]: Start difference. First operand has 272 places, 411 transitions, 6236 flow. Second operand 7 states and 189 transitions. [2024-06-27 22:33:56,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 438 transitions, 7186 flow [2024-06-27 22:33:57,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 438 transitions, 7042 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:57,036 INFO L231 Difference]: Finished difference. Result has 275 places, 411 transitions, 6297 flow [2024-06-27 22:33:57,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6092, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6297, PETRI_PLACES=275, PETRI_TRANSITIONS=411} [2024-06-27 22:33:57,037 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 223 predicate places. [2024-06-27 22:33:57,037 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 411 transitions, 6297 flow [2024-06-27 22:33:57,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:57,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:57,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:57,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:33:57,037 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:33:57,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:57,038 INFO L85 PathProgramCache]: Analyzing trace with hash -946287396, now seen corresponding path program 5 times [2024-06-27 22:33:57,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:57,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671402854] [2024-06-27 22:33:57,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:57,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:57,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:57,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671402854] [2024-06-27 22:33:57,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671402854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:57,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:57,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:57,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668908627] [2024-06-27 22:33:57,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:57,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:57,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:57,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:57,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:57,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:33:57,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 411 transitions, 6297 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:57,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:57,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:33:57,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:59,472 INFO L124 PetriNetUnfolderBase]: 6459/11224 cut-off events. [2024-06-27 22:33:59,472 INFO L125 PetriNetUnfolderBase]: For 279024/279101 co-relation queries the response was YES. [2024-06-27 22:33:59,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75105 conditions, 11224 events. 6459/11224 cut-off events. For 279024/279101 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 87868 event pairs, 2022 based on Foata normal form. 19/10793 useless extension candidates. Maximal degree in co-relation 74977. Up to 8499 conditions per place. [2024-06-27 22:33:59,611 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 359 selfloop transitions, 87 changer transitions 0/461 dead transitions. [2024-06-27 22:33:59,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 461 transitions, 7799 flow [2024-06-27 22:33:59,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:59,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:59,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-27 22:33:59,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.572463768115942 [2024-06-27 22:33:59,612 INFO L175 Difference]: Start difference. First operand has 275 places, 411 transitions, 6297 flow. Second operand 9 states and 237 transitions. [2024-06-27 22:33:59,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 461 transitions, 7799 flow [2024-06-27 22:34:00,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 461 transitions, 7593 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:00,326 INFO L231 Difference]: Finished difference. Result has 277 places, 415 transitions, 6363 flow [2024-06-27 22:34:00,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6093, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6363, PETRI_PLACES=277, PETRI_TRANSITIONS=415} [2024-06-27 22:34:00,326 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 225 predicate places. [2024-06-27 22:34:00,327 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 415 transitions, 6363 flow [2024-06-27 22:34:00,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:00,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:00,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:00,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:34:00,327 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:34:00,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:00,328 INFO L85 PathProgramCache]: Analyzing trace with hash -719960675, now seen corresponding path program 10 times [2024-06-27 22:34:00,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:00,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565244531] [2024-06-27 22:34:00,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:00,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:00,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:00,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:00,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565244531] [2024-06-27 22:34:00,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565244531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:00,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:00,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:34:00,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607702124] [2024-06-27 22:34:00,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:00,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:34:00,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:00,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:34:00,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:34:00,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:34:00,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 415 transitions, 6363 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:00,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:00,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:34:00,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:02,506 INFO L124 PetriNetUnfolderBase]: 6745/11598 cut-off events. [2024-06-27 22:34:02,506 INFO L125 PetriNetUnfolderBase]: For 292813/292887 co-relation queries the response was YES. [2024-06-27 22:34:02,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79175 conditions, 11598 events. 6745/11598 cut-off events. For 292813/292887 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 90174 event pairs, 1698 based on Foata normal form. 1/11097 useless extension candidates. Maximal degree in co-relation 79047. Up to 7123 conditions per place. [2024-06-27 22:34:02,647 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 249 selfloop transitions, 198 changer transitions 0/462 dead transitions. [2024-06-27 22:34:02,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 462 transitions, 8049 flow [2024-06-27 22:34:02,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:34:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:34:02,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-27 22:34:02,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5962732919254659 [2024-06-27 22:34:02,649 INFO L175 Difference]: Start difference. First operand has 277 places, 415 transitions, 6363 flow. Second operand 7 states and 192 transitions. [2024-06-27 22:34:02,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 462 transitions, 8049 flow [2024-06-27 22:34:03,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 462 transitions, 7946 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 22:34:03,473 INFO L231 Difference]: Finished difference. Result has 282 places, 431 transitions, 7269 flow [2024-06-27 22:34:03,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6260, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7269, PETRI_PLACES=282, PETRI_TRANSITIONS=431} [2024-06-27 22:34:03,474 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 230 predicate places. [2024-06-27 22:34:03,474 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 431 transitions, 7269 flow [2024-06-27 22:34:03,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:03,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:03,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:03,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:34:03,475 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:34:03,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:03,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1814089917, now seen corresponding path program 3 times [2024-06-27 22:34:03,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:03,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609881465] [2024-06-27 22:34:03,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:03,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:03,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:03,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609881465] [2024-06-27 22:34:03,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609881465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:03,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:03,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:34:03,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873439327] [2024-06-27 22:34:03,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:03,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:34:03,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:03,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:34:03,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:34:03,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:34:03,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 431 transitions, 7269 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:03,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:03,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:34:03,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:05,826 INFO L124 PetriNetUnfolderBase]: 6682/11543 cut-off events. [2024-06-27 22:34:05,826 INFO L125 PetriNetUnfolderBase]: For 330153/330250 co-relation queries the response was YES. [2024-06-27 22:34:05,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82952 conditions, 11543 events. 6682/11543 cut-off events. For 330153/330250 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 90537 event pairs, 2177 based on Foata normal form. 16/11052 useless extension candidates. Maximal degree in co-relation 82820. Up to 9587 conditions per place. [2024-06-27 22:34:05,954 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 404 selfloop transitions, 34 changer transitions 0/453 dead transitions. [2024-06-27 22:34:05,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 453 transitions, 8346 flow [2024-06-27 22:34:05,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:34:05,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:34:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-27 22:34:05,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2024-06-27 22:34:05,956 INFO L175 Difference]: Start difference. First operand has 282 places, 431 transitions, 7269 flow. Second operand 6 states and 152 transitions. [2024-06-27 22:34:05,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 453 transitions, 8346 flow [2024-06-27 22:34:06,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 453 transitions, 8050 flow, removed 116 selfloop flow, removed 1 redundant places. [2024-06-27 22:34:06,812 INFO L231 Difference]: Finished difference. Result has 288 places, 437 transitions, 7233 flow [2024-06-27 22:34:06,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6977, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7233, PETRI_PLACES=288, PETRI_TRANSITIONS=437} [2024-06-27 22:34:06,813 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 236 predicate places. [2024-06-27 22:34:06,813 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 437 transitions, 7233 flow [2024-06-27 22:34:06,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:06,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:06,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:06,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:34:06,813 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:34:06,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:06,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1937244542, now seen corresponding path program 6 times [2024-06-27 22:34:06,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:06,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312698449] [2024-06-27 22:34:06,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:06,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:07,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:07,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312698449] [2024-06-27 22:34:07,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312698449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:07,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:07,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:34:07,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151866861] [2024-06-27 22:34:07,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:07,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:34:07,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:07,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:34:07,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:34:07,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:34:07,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 437 transitions, 7233 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:07,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:07,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:34:07,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:09,576 INFO L124 PetriNetUnfolderBase]: 6731/11644 cut-off events. [2024-06-27 22:34:09,576 INFO L125 PetriNetUnfolderBase]: For 342170/342265 co-relation queries the response was YES. [2024-06-27 22:34:09,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83782 conditions, 11644 events. 6731/11644 cut-off events. For 342170/342265 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 91469 event pairs, 2285 based on Foata normal form. 19/11156 useless extension candidates. Maximal degree in co-relation 83646. Up to 9366 conditions per place. [2024-06-27 22:34:09,690 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 408 selfloop transitions, 46 changer transitions 0/469 dead transitions. [2024-06-27 22:34:09,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 469 transitions, 8575 flow [2024-06-27 22:34:09,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:34:09,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:34:09,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 22:34:09,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489130434782609 [2024-06-27 22:34:09,691 INFO L175 Difference]: Start difference. First operand has 288 places, 437 transitions, 7233 flow. Second operand 8 states and 202 transitions. [2024-06-27 22:34:09,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 469 transitions, 8575 flow [2024-06-27 22:34:10,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 469 transitions, 8403 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-27 22:34:10,508 INFO L231 Difference]: Finished difference. Result has 292 places, 439 transitions, 7208 flow [2024-06-27 22:34:10,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7063, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7208, PETRI_PLACES=292, PETRI_TRANSITIONS=439} [2024-06-27 22:34:10,509 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 240 predicate places. [2024-06-27 22:34:10,509 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 439 transitions, 7208 flow [2024-06-27 22:34:10,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:10,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:10,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:10,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:34:10,510 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:34:10,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:10,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1936977415, now seen corresponding path program 11 times [2024-06-27 22:34:10,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:10,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430960440] [2024-06-27 22:34:10,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:10,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:10,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:10,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:10,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430960440] [2024-06-27 22:34:10,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430960440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:10,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:10,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:34:10,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486304125] [2024-06-27 22:34:10,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:10,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:34:10,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:10,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:34:10,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:34:10,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:34:10,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 439 transitions, 7208 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:10,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:10,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:34:10,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:12,852 INFO L124 PetriNetUnfolderBase]: 6862/11737 cut-off events. [2024-06-27 22:34:12,852 INFO L125 PetriNetUnfolderBase]: For 348263/348347 co-relation queries the response was YES. [2024-06-27 22:34:12,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85606 conditions, 11737 events. 6862/11737 cut-off events. For 348263/348347 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 90465 event pairs, 1800 based on Foata normal form. 3/11219 useless extension candidates. Maximal degree in co-relation 85470. Up to 7664 conditions per place. [2024-06-27 22:34:13,014 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 344 selfloop transitions, 121 changer transitions 0/480 dead transitions. [2024-06-27 22:34:13,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 480 transitions, 8841 flow [2024-06-27 22:34:13,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:34:13,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:34:13,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-27 22:34:13,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2024-06-27 22:34:13,025 INFO L175 Difference]: Start difference. First operand has 292 places, 439 transitions, 7208 flow. Second operand 7 states and 189 transitions. [2024-06-27 22:34:13,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 480 transitions, 8841 flow [2024-06-27 22:34:13,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 480 transitions, 8706 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 22:34:14,001 INFO L231 Difference]: Finished difference. Result has 294 places, 449 transitions, 7639 flow [2024-06-27 22:34:14,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7073, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7639, PETRI_PLACES=294, PETRI_TRANSITIONS=449} [2024-06-27 22:34:14,008 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 242 predicate places. [2024-06-27 22:34:14,008 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 449 transitions, 7639 flow [2024-06-27 22:34:14,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:14,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:14,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:14,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:34:14,008 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:34:14,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:14,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1758802435, now seen corresponding path program 12 times [2024-06-27 22:34:14,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:14,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884681586] [2024-06-27 22:34:14,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:14,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:14,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:14,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884681586] [2024-06-27 22:34:14,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884681586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:14,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:14,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:34:14,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342889925] [2024-06-27 22:34:14,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:14,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:34:14,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:14,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:34:14,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:34:14,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:34:14,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 449 transitions, 7639 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:14,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:14,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:34:14,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:16,384 INFO L124 PetriNetUnfolderBase]: 6947/12007 cut-off events. [2024-06-27 22:34:16,384 INFO L125 PetriNetUnfolderBase]: For 361110/361204 co-relation queries the response was YES. [2024-06-27 22:34:16,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88171 conditions, 12007 events. 6947/12007 cut-off events. For 361110/361204 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 94222 event pairs, 1520 based on Foata normal form. 3/11452 useless extension candidates. Maximal degree in co-relation 88033. Up to 8574 conditions per place. [2024-06-27 22:34:16,571 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 403 selfloop transitions, 71 changer transitions 0/489 dead transitions. [2024-06-27 22:34:16,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 489 transitions, 9125 flow [2024-06-27 22:34:16,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:34:16,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:34:16,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-27 22:34:16,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.577639751552795 [2024-06-27 22:34:16,573 INFO L175 Difference]: Start difference. First operand has 294 places, 449 transitions, 7639 flow. Second operand 7 states and 186 transitions. [2024-06-27 22:34:16,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 489 transitions, 9125 flow [2024-06-27 22:34:17,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 489 transitions, 8664 flow, removed 98 selfloop flow, removed 3 redundant places. [2024-06-27 22:34:17,752 INFO L231 Difference]: Finished difference. Result has 299 places, 458 transitions, 7625 flow [2024-06-27 22:34:17,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7207, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7625, PETRI_PLACES=299, PETRI_TRANSITIONS=458} [2024-06-27 22:34:17,753 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 247 predicate places. [2024-06-27 22:34:17,753 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 458 transitions, 7625 flow [2024-06-27 22:34:17,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:17,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:17,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:17,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:34:17,754 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:34:17,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:17,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1758923335, now seen corresponding path program 13 times [2024-06-27 22:34:17,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:17,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611945855] [2024-06-27 22:34:17,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:17,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:17,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:17,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611945855] [2024-06-27 22:34:17,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611945855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:17,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:17,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:34:17,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679062089] [2024-06-27 22:34:17,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:17,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:34:17,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:17,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:34:17,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:34:17,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:34:17,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 458 transitions, 7625 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:17,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:17,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:34:17,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:20,176 INFO L124 PetriNetUnfolderBase]: 7017/12068 cut-off events. [2024-06-27 22:34:20,177 INFO L125 PetriNetUnfolderBase]: For 369232/369330 co-relation queries the response was YES. [2024-06-27 22:34:20,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88152 conditions, 12068 events. 7017/12068 cut-off events. For 369232/369330 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 94467 event pairs, 1457 based on Foata normal form. 3/11522 useless extension candidates. Maximal degree in co-relation 88012. Up to 8451 conditions per place. [2024-06-27 22:34:20,330 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 398 selfloop transitions, 83 changer transitions 0/496 dead transitions. [2024-06-27 22:34:20,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 496 transitions, 9114 flow [2024-06-27 22:34:20,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:34:20,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:34:20,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-27 22:34:20,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2024-06-27 22:34:20,331 INFO L175 Difference]: Start difference. First operand has 299 places, 458 transitions, 7625 flow. Second operand 7 states and 189 transitions. [2024-06-27 22:34:20,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 496 transitions, 9114 flow [2024-06-27 22:34:21,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 496 transitions, 8761 flow, removed 79 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:21,455 INFO L231 Difference]: Finished difference. Result has 302 places, 464 transitions, 7652 flow [2024-06-27 22:34:21,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7272, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7652, PETRI_PLACES=302, PETRI_TRANSITIONS=464} [2024-06-27 22:34:21,455 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 250 predicate places. [2024-06-27 22:34:21,455 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 464 transitions, 7652 flow [2024-06-27 22:34:21,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:21,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:21,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:21,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:34:21,456 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:34:21,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:21,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1944602919, now seen corresponding path program 4 times [2024-06-27 22:34:21,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:21,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337486350] [2024-06-27 22:34:21,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:21,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:21,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:21,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:21,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337486350] [2024-06-27 22:34:21,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337486350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:21,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:21,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:34:21,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953900515] [2024-06-27 22:34:21,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:21,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:34:21,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:21,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:34:21,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:34:21,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:34:21,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 464 transitions, 7652 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:21,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:21,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:34:21,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:24,296 INFO L124 PetriNetUnfolderBase]: 7509/12712 cut-off events. [2024-06-27 22:34:24,296 INFO L125 PetriNetUnfolderBase]: For 376056/376077 co-relation queries the response was YES. [2024-06-27 22:34:24,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91667 conditions, 12712 events. 7509/12712 cut-off events. For 376056/376077 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 97878 event pairs, 2227 based on Foata normal form. 16/12348 useless extension candidates. Maximal degree in co-relation 91525. Up to 10722 conditions per place. [2024-06-27 22:34:24,440 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 420 selfloop transitions, 56 changer transitions 0/486 dead transitions. [2024-06-27 22:34:24,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 486 transitions, 8728 flow [2024-06-27 22:34:24,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:34:24,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:34:24,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-27 22:34:24,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031055900621118 [2024-06-27 22:34:24,444 INFO L175 Difference]: Start difference. First operand has 302 places, 464 transitions, 7652 flow. Second operand 7 states and 162 transitions. [2024-06-27 22:34:24,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 486 transitions, 8728 flow [2024-06-27 22:34:25,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 486 transitions, 8264 flow, removed 122 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:25,751 INFO L231 Difference]: Finished difference. Result has 304 places, 466 transitions, 7367 flow [2024-06-27 22:34:25,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7222, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7367, PETRI_PLACES=304, PETRI_TRANSITIONS=466} [2024-06-27 22:34:25,752 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 252 predicate places. [2024-06-27 22:34:25,752 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 466 transitions, 7367 flow [2024-06-27 22:34:25,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:25,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:25,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:25,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:34:25,753 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:34:25,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:25,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1758923552, now seen corresponding path program 7 times [2024-06-27 22:34:25,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:25,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533479102] [2024-06-27 22:34:25,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:25,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:26,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:26,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533479102] [2024-06-27 22:34:26,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533479102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:26,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:26,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:34:26,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822800941] [2024-06-27 22:34:26,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:26,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:34:26,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:26,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:34:26,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:34:26,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:34:26,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 466 transitions, 7367 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:26,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:26,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:34:26,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:28,488 INFO L124 PetriNetUnfolderBase]: 6938/11922 cut-off events. [2024-06-27 22:34:28,488 INFO L125 PetriNetUnfolderBase]: For 351454/351569 co-relation queries the response was YES. [2024-06-27 22:34:28,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83697 conditions, 11922 events. 6938/11922 cut-off events. For 351454/351569 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 93522 event pairs, 2299 based on Foata normal form. 19/11418 useless extension candidates. Maximal degree in co-relation 83554. Up to 9931 conditions per place. [2024-06-27 22:34:28,641 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 445 selfloop transitions, 27 changer transitions 0/487 dead transitions. [2024-06-27 22:34:28,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 487 transitions, 8477 flow [2024-06-27 22:34:28,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:34:28,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:34:28,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 22:34:28,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2024-06-27 22:34:28,642 INFO L175 Difference]: Start difference. First operand has 304 places, 466 transitions, 7367 flow. Second operand 7 states and 174 transitions. [2024-06-27 22:34:28,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 487 transitions, 8477 flow [2024-06-27 22:34:29,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 487 transitions, 8355 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 22:34:29,789 INFO L231 Difference]: Finished difference. Result has 305 places, 466 transitions, 7306 flow [2024-06-27 22:34:29,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7245, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7306, PETRI_PLACES=305, PETRI_TRANSITIONS=466} [2024-06-27 22:34:29,789 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 253 predicate places. [2024-06-27 22:34:29,790 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 466 transitions, 7306 flow [2024-06-27 22:34:29,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:29,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:29,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:29,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:34:29,790 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:34:29,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:29,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1944611847, now seen corresponding path program 1 times [2024-06-27 22:34:29,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:29,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954388421] [2024-06-27 22:34:29,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:29,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:30,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:30,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954388421] [2024-06-27 22:34:30,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954388421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:30,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:30,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:34:30,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113451617] [2024-06-27 22:34:30,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:30,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:34:30,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:30,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:34:30,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:34:30,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:34:30,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 466 transitions, 7306 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:30,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:30,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:34:30,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:32,545 INFO L124 PetriNetUnfolderBase]: 7002/12008 cut-off events. [2024-06-27 22:34:32,545 INFO L125 PetriNetUnfolderBase]: For 347897/347981 co-relation queries the response was YES. [2024-06-27 22:34:32,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83919 conditions, 12008 events. 7002/12008 cut-off events. For 347897/347981 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 93913 event pairs, 2558 based on Foata normal form. 6/11512 useless extension candidates. Maximal degree in co-relation 83777. Up to 9756 conditions per place. [2024-06-27 22:34:32,718 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 456 selfloop transitions, 26 changer transitions 0/497 dead transitions. [2024-06-27 22:34:32,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 497 transitions, 8566 flow [2024-06-27 22:34:32,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:34:32,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:34:32,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 22:34:32,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5527950310559007 [2024-06-27 22:34:32,720 INFO L175 Difference]: Start difference. First operand has 305 places, 466 transitions, 7306 flow. Second operand 7 states and 178 transitions. [2024-06-27 22:34:32,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 497 transitions, 8566 flow [2024-06-27 22:34:34,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 497 transitions, 8492 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 22:34:34,175 INFO L231 Difference]: Finished difference. Result has 306 places, 467 transitions, 7310 flow [2024-06-27 22:34:34,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7232, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7310, PETRI_PLACES=306, PETRI_TRANSITIONS=467} [2024-06-27 22:34:34,176 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 254 predicate places. [2024-06-27 22:34:34,176 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 467 transitions, 7310 flow [2024-06-27 22:34:34,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:34,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:34,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:34,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:34:34,177 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:34:34,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:34,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1608873284, now seen corresponding path program 1 times [2024-06-27 22:34:34,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:34,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62697658] [2024-06-27 22:34:34,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:34,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:34,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:34,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:34,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62697658] [2024-06-27 22:34:34,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62697658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:34,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:34,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:34:34,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252414939] [2024-06-27 22:34:34,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:34,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:34:34,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:34,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:34:34,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:34:34,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 46 [2024-06-27 22:34:34,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 467 transitions, 7310 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:34,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:34,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 46 [2024-06-27 22:34:34,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:37,168 INFO L124 PetriNetUnfolderBase]: 8687/14495 cut-off events. [2024-06-27 22:34:37,169 INFO L125 PetriNetUnfolderBase]: For 427784/428703 co-relation queries the response was YES. [2024-06-27 22:34:37,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101683 conditions, 14495 events. 8687/14495 cut-off events. For 427784/428703 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 114421 event pairs, 2689 based on Foata normal form. 350/14089 useless extension candidates. Maximal degree in co-relation 101540. Up to 7596 conditions per place. [2024-06-27 22:34:37,365 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 427 selfloop transitions, 28 changer transitions 255/844 dead transitions. [2024-06-27 22:34:37,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 844 transitions, 14195 flow [2024-06-27 22:34:37,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:34:37,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:34:37,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 236 transitions. [2024-06-27 22:34:37,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2024-06-27 22:34:37,366 INFO L175 Difference]: Start difference. First operand has 306 places, 467 transitions, 7310 flow. Second operand 8 states and 236 transitions. [2024-06-27 22:34:37,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 844 transitions, 14195 flow [2024-06-27 22:34:38,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 844 transitions, 14106 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:38,728 INFO L231 Difference]: Finished difference. Result has 314 places, 470 transitions, 7424 flow [2024-06-27 22:34:38,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7255, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7424, PETRI_PLACES=314, PETRI_TRANSITIONS=470} [2024-06-27 22:34:38,729 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 262 predicate places. [2024-06-27 22:34:38,729 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 470 transitions, 7424 flow [2024-06-27 22:34:38,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:38,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:38,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:38,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:34:38,730 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:34:38,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:38,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1114386828, now seen corresponding path program 1 times [2024-06-27 22:34:38,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:38,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863700815] [2024-06-27 22:34:38,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:38,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:39,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:39,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:39,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863700815] [2024-06-27 22:34:39,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863700815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:39,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:39,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:34:39,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781670419] [2024-06-27 22:34:39,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:39,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:34:39,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:39,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:34:39,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:34:39,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:34:39,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 470 transitions, 7424 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:39,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:39,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:34:39,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:42,338 INFO L124 PetriNetUnfolderBase]: 6992/12073 cut-off events. [2024-06-27 22:34:42,338 INFO L125 PetriNetUnfolderBase]: For 380824/380931 co-relation queries the response was YES. [2024-06-27 22:34:42,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88331 conditions, 12073 events. 6992/12073 cut-off events. For 380824/380931 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 94952 event pairs, 1923 based on Foata normal form. 31/11949 useless extension candidates. Maximal degree in co-relation 88183. Up to 8487 conditions per place. [2024-06-27 22:34:42,489 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 374 selfloop transitions, 135 changer transitions 3/527 dead transitions. [2024-06-27 22:34:42,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 527 transitions, 9071 flow [2024-06-27 22:34:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:42,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:42,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-27 22:34:42,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2024-06-27 22:34:42,490 INFO L175 Difference]: Start difference. First operand has 314 places, 470 transitions, 7424 flow. Second operand 9 states and 243 transitions. [2024-06-27 22:34:42,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 527 transitions, 9071 flow [2024-06-27 22:34:43,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 527 transitions, 9047 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 22:34:43,601 INFO L231 Difference]: Finished difference. Result has 322 places, 478 transitions, 8008 flow [2024-06-27 22:34:43,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7414, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8008, PETRI_PLACES=322, PETRI_TRANSITIONS=478} [2024-06-27 22:34:43,602 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 270 predicate places. [2024-06-27 22:34:43,602 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 478 transitions, 8008 flow [2024-06-27 22:34:43,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:43,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:43,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:43,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:34:43,602 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:34:43,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:43,603 INFO L85 PathProgramCache]: Analyzing trace with hash 665842220, now seen corresponding path program 1 times [2024-06-27 22:34:43,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:43,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786134632] [2024-06-27 22:34:43,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:43,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:43,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:43,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786134632] [2024-06-27 22:34:43,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786134632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:43,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:43,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:34:43,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96353333] [2024-06-27 22:34:43,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:43,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:34:43,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:43,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:34:43,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:34:43,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:34:43,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 478 transitions, 8008 flow. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:43,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:43,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:34:43,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:46,965 INFO L124 PetriNetUnfolderBase]: 7750/13111 cut-off events. [2024-06-27 22:34:46,966 INFO L125 PetriNetUnfolderBase]: For 394065/394077 co-relation queries the response was YES. [2024-06-27 22:34:47,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97152 conditions, 13111 events. 7750/13111 cut-off events. For 394065/394077 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 100696 event pairs, 1460 based on Foata normal form. 10/13101 useless extension candidates. Maximal degree in co-relation 96999. Up to 9267 conditions per place. [2024-06-27 22:34:47,124 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 359 selfloop transitions, 212 changer transitions 0/581 dead transitions. [2024-06-27 22:34:47,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 581 transitions, 10587 flow [2024-06-27 22:34:47,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:34:47,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:34:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-06-27 22:34:47,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6032608695652174 [2024-06-27 22:34:47,126 INFO L175 Difference]: Start difference. First operand has 322 places, 478 transitions, 8008 flow. Second operand 8 states and 222 transitions. [2024-06-27 22:34:47,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 581 transitions, 10587 flow [2024-06-27 22:34:48,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 581 transitions, 10250 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:48,660 INFO L231 Difference]: Finished difference. Result has 325 places, 534 transitions, 9565 flow [2024-06-27 22:34:48,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7706, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9565, PETRI_PLACES=325, PETRI_TRANSITIONS=534} [2024-06-27 22:34:48,660 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 273 predicate places. [2024-06-27 22:34:48,660 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 534 transitions, 9565 flow [2024-06-27 22:34:48,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:48,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:48,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:48,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:34:48,661 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:34:48,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:48,661 INFO L85 PathProgramCache]: Analyzing trace with hash 389255930, now seen corresponding path program 2 times [2024-06-27 22:34:48,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:48,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739081939] [2024-06-27 22:34:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:48,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:48,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:48,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:48,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739081939] [2024-06-27 22:34:48,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739081939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:48,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:48,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:34:48,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502741959] [2024-06-27 22:34:48,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:48,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:34:48,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:48,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:34:48,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:34:48,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:34:48,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 534 transitions, 9565 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:48,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:48,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:34:48,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:52,123 INFO L124 PetriNetUnfolderBase]: 7379/12664 cut-off events. [2024-06-27 22:34:52,123 INFO L125 PetriNetUnfolderBase]: For 417595/417708 co-relation queries the response was YES. [2024-06-27 22:34:52,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95545 conditions, 12664 events. 7379/12664 cut-off events. For 417595/417708 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 99416 event pairs, 1770 based on Foata normal form. 10/12139 useless extension candidates. Maximal degree in co-relation 95390. Up to 9003 conditions per place. [2024-06-27 22:34:52,279 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 453 selfloop transitions, 134 changer transitions 0/604 dead transitions. [2024-06-27 22:34:52,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 604 transitions, 11665 flow [2024-06-27 22:34:52,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:34:52,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:34:52,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-27 22:34:52,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2024-06-27 22:34:52,280 INFO L175 Difference]: Start difference. First operand has 325 places, 534 transitions, 9565 flow. Second operand 8 states and 216 transitions. [2024-06-27 22:34:52,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 604 transitions, 11665 flow [2024-06-27 22:34:53,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 604 transitions, 11363 flow, removed 76 selfloop flow, removed 3 redundant places. [2024-06-27 22:34:53,872 INFO L231 Difference]: Finished difference. Result has 330 places, 563 transitions, 10220 flow [2024-06-27 22:34:53,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9306, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10220, PETRI_PLACES=330, PETRI_TRANSITIONS=563} [2024-06-27 22:34:53,874 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 278 predicate places. [2024-06-27 22:34:53,874 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 563 transitions, 10220 flow [2024-06-27 22:34:53,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:53,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:53,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:53,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:34:53,875 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:34:53,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:53,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1361654244, now seen corresponding path program 3 times [2024-06-27 22:34:53,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:53,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167050174] [2024-06-27 22:34:53,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:53,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:54,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:54,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:54,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167050174] [2024-06-27 22:34:54,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167050174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:54,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:54,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:34:54,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70062745] [2024-06-27 22:34:54,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:54,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:34:54,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:54,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:34:54,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:34:54,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:34:54,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 563 transitions, 10220 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:54,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:54,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:34:54,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:58,596 INFO L124 PetriNetUnfolderBase]: 10184/17275 cut-off events. [2024-06-27 22:34:58,596 INFO L125 PetriNetUnfolderBase]: For 605099/605437 co-relation queries the response was YES. [2024-06-27 22:34:58,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133808 conditions, 17275 events. 10184/17275 cut-off events. For 605099/605437 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 140169 event pairs, 1291 based on Foata normal form. 306/17124 useless extension candidates. Maximal degree in co-relation 133652. Up to 6796 conditions per place. [2024-06-27 22:34:58,851 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 568 selfloop transitions, 158 changer transitions 0/783 dead transitions. [2024-06-27 22:34:58,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 783 transitions, 15541 flow [2024-06-27 22:34:58,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:34:58,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:34:58,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-27 22:34:58,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-06-27 22:34:58,852 INFO L175 Difference]: Start difference. First operand has 330 places, 563 transitions, 10220 flow. Second operand 8 states and 212 transitions. [2024-06-27 22:34:58,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 783 transitions, 15541 flow [2024-06-27 22:35:00,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 783 transitions, 15164 flow, removed 116 selfloop flow, removed 4 redundant places. [2024-06-27 22:35:00,886 INFO L231 Difference]: Finished difference. Result has 336 places, 614 transitions, 11275 flow [2024-06-27 22:35:00,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9929, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11275, PETRI_PLACES=336, PETRI_TRANSITIONS=614} [2024-06-27 22:35:00,886 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 284 predicate places. [2024-06-27 22:35:00,887 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 614 transitions, 11275 flow [2024-06-27 22:35:00,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:00,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:00,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:00,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:35:00,887 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:35:00,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:00,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1684364548, now seen corresponding path program 4 times [2024-06-27 22:35:00,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:00,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694861264] [2024-06-27 22:35:00,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:00,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:01,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:01,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694861264] [2024-06-27 22:35:01,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694861264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:01,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:01,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:01,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547532400] [2024-06-27 22:35:01,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:01,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:01,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:01,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:01,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:01,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:35:01,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 614 transitions, 11275 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:01,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:01,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:35:01,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:06,190 INFO L124 PetriNetUnfolderBase]: 10989/18628 cut-off events. [2024-06-27 22:35:06,190 INFO L125 PetriNetUnfolderBase]: For 629728/629745 co-relation queries the response was YES. [2024-06-27 22:35:06,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147664 conditions, 18628 events. 10989/18628 cut-off events. For 629728/629745 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 151266 event pairs, 2422 based on Foata normal form. 16/18078 useless extension candidates. Maximal degree in co-relation 147505. Up to 13563 conditions per place. [2024-06-27 22:35:06,419 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 528 selfloop transitions, 190 changer transitions 0/728 dead transitions. [2024-06-27 22:35:06,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 728 transitions, 14213 flow [2024-06-27 22:35:06,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:35:06,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:35:06,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 308 transitions. [2024-06-27 22:35:06,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2024-06-27 22:35:06,420 INFO L175 Difference]: Start difference. First operand has 336 places, 614 transitions, 11275 flow. Second operand 12 states and 308 transitions. [2024-06-27 22:35:06,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 728 transitions, 14213 flow [2024-06-27 22:35:08,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 728 transitions, 14076 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 22:35:08,796 INFO L231 Difference]: Finished difference. Result has 346 places, 640 transitions, 12298 flow [2024-06-27 22:35:08,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11154, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12298, PETRI_PLACES=346, PETRI_TRANSITIONS=640} [2024-06-27 22:35:08,797 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 294 predicate places. [2024-06-27 22:35:08,797 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 640 transitions, 12298 flow [2024-06-27 22:35:08,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:08,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:08,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:08,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:35:08,797 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:35:08,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:08,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1691473688, now seen corresponding path program 2 times [2024-06-27 22:35:08,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:08,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960229464] [2024-06-27 22:35:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:08,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:09,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:09,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960229464] [2024-06-27 22:35:09,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960229464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:09,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:09,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:35:09,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432012370] [2024-06-27 22:35:09,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:09,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:35:09,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:09,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:35:09,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:35:09,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:35:09,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 640 transitions, 12298 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:09,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:09,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:35:09,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand