./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-semi1.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-semi1.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3d25acf6 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/weaver/test-semi1.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-semi1.wvr.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-dev-3d25acf-m [2024-01-30 14:26:01,678 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:26:01,744 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:26:01,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:26:01,750 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:26:01,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:26:01,774 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:26:01,774 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:26:01,775 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:26:01,778 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:26:01,778 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:26:01,778 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:26:01,779 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:26:01,780 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:26:01,780 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:26:01,781 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:26:01,781 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:26:01,781 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:26:01,781 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:26:01,781 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:26:01,782 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:26:01,783 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:26:01,783 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:26:01,783 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:26:01,783 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:26:01,784 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:26:01,784 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:26:01,784 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:26:01,785 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:26:01,785 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:26:01,785 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:26:01,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:26:01,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:26:01,786 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:26:01,786 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:26:01,786 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:26:01,787 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:26:01,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:26:01,787 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:26:01,787 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:26:01,787 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:26:01,787 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:26:01,788 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:26:01,788 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:26:02,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:26:02,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:26:02,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:26:02,053 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:26:02,054 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:26:02,054 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-semi1.wvr.c [2024-01-30 14:26:03,132 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:26:03,288 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:26:03,289 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-semi1.wvr.c [2024-01-30 14:26:03,297 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23cd64ec2/6980bd5e39df4eb685f19b8b0fe8e995/FLAG273cfd6c8 [2024-01-30 14:26:03,311 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23cd64ec2/6980bd5e39df4eb685f19b8b0fe8e995 [2024-01-30 14:26:03,313 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:26:03,314 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:26:03,316 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-semi1.wvr.yml/witness.yml [2024-01-30 14:26:03,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:26:03,396 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:26:03,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:26:03,397 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:26:03,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:26:03,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:26:03" (1/2) ... [2024-01-30 14:26:03,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40668b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:03, skipping insertion in model container [2024-01-30 14:26:03,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:26:03" (1/2) ... [2024-01-30 14:26:03,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a787bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:03, skipping insertion in model container [2024-01-30 14:26:03,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:26:03" (2/2) ... [2024-01-30 14:26:03,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40668b5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:03, skipping insertion in model container [2024-01-30 14:26:03,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:26:03" (2/2) ... [2024-01-30 14:26:03,405 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:26:03,420 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:26:03,421 INFO L98 nessWitnessExtractor]: Location invariant before [L41-L41] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,422 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L54] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,422 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] y == 0 [2024-01-30 14:26:03,422 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] (-2147483647 <= x) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:26:03,422 INFO L98 nessWitnessExtractor]: Location invariant before [L22-L25] y == 0 [2024-01-30 14:26:03,422 INFO L98 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,422 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,422 INFO L98 nessWitnessExtractor]: Location invariant before [L49-L49] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,423 INFO L98 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,423 INFO L98 nessWitnessExtractor]: Location invariant before [L52-L52] (x <= 2147483646) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:26:03,423 INFO L98 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,423 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] (x == 0) && (y == 0) [2024-01-30 14:26:03,439 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:26:03,568 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-semi1.wvr.c[2005,2018] [2024-01-30 14:26:03,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:26:03,579 INFO L202 MainTranslator]: Completed pre-run [2024-01-30 14:26:03,595 WARN L424 MainDispatcher]: Unable to annotate extern int pthread_create (pthread_t *__restrict __newthread, const pthread_attr_t *__restrict __attr, void *(*__start_routine) (void *), void *__restrict __arg) __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 3))); with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-30 14:26:03,647 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-semi1.wvr.c[2005,2018] [2024-01-30 14:26:03,648 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:26:03,659 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:26:03,659 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:03 WrapperNode [2024-01-30 14:26:03,659 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:26:03,660 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:26:03,661 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:26:03,661 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:26:03,666 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 30.01 02:26:03" (1/1) ... [2024-01-30 14:26:03,679 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 30.01 02:26:03" (1/1) ... [2024-01-30 14:26:03,701 INFO L138 Inliner]: procedures = 21, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 80 [2024-01-30 14:26:03,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:26:03,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:26:03,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:26:03,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:26:03,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:03" (1/1) ... [2024-01-30 14:26:03,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:03" (1/1) ... [2024-01-30 14:26:03,716 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:03" (1/1) ... [2024-01-30 14:26:03,734 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-30 14:26:03,735 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:03" (1/1) ... [2024-01-30 14:26:03,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:03" (1/1) ... [2024-01-30 14:26:03,746 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:03" (1/1) ... [2024-01-30 14:26:03,748 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:03" (1/1) ... [2024-01-30 14:26:03,751 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:03" (1/1) ... [2024-01-30 14:26:03,752 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:03" (1/1) ... [2024-01-30 14:26:03,755 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:26:03,756 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:26:03,756 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:26:03,756 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:26:03,757 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:03" (1/1) ... [2024-01-30 14:26:03,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:26:03,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:26:03,786 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) [2024-01-30 14:26:03,802 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 [2024-01-30 14:26:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:26:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-30 14:26:03,816 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-30 14:26:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-30 14:26:03,817 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-30 14:26:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:26:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:26:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:26:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:26:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:26:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:26:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:26:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-30 14:26:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-30 14:26:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:26:03,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:26:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:26:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:26:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:26:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:26:03,821 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:26:03,917 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:26:03,919 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:26:04,141 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:26:04,142 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:26:04,278 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:26:04,278 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-30 14:26:04,279 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:26:04 BoogieIcfgContainer [2024-01-30 14:26:04,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:26:04,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:26:04,282 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:26:04,284 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:26:04,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:26:03" (1/4) ... [2024-01-30 14:26:04,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c027cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:26:04, skipping insertion in model container [2024-01-30 14:26:04,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:26:03" (2/4) ... [2024-01-30 14:26:04,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c027cf3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:26:04, skipping insertion in model container [2024-01-30 14:26:04,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:03" (3/4) ... [2024-01-30 14:26:04,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c027cf3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:26:04, skipping insertion in model container [2024-01-30 14:26:04,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:26:04" (4/4) ... [2024-01-30 14:26:04,288 INFO L112 eAbstractionObserver]: Analyzing ICFG test-semi1.wvr.c [2024-01-30 14:26:04,303 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:26:04,303 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-01-30 14:26:04,304 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:26:04,348 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-30 14:26:04,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 34 transitions, 82 flow [2024-01-30 14:26:04,429 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2024-01-30 14:26:04,430 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-30 14:26:04,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 32 events. 0/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-30 14:26:04,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 34 transitions, 82 flow [2024-01-30 14:26:04,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 31 transitions, 74 flow [2024-01-30 14:26:04,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:26:04,450 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;@486060d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:26:04,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-01-30 14:26:04,454 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:26:04,454 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:26:04,454 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:26:04,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:04,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:26:04,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-01-30 14:26:04,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:04,461 INFO L85 PathProgramCache]: Analyzing trace with hash 9044, now seen corresponding path program 1 times [2024-01-30 14:26:04,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:04,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785811031] [2024-01-30 14:26:04,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:04,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:04,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:04,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785811031] [2024-01-30 14:26:04,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785811031] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:04,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:04,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:26:04,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833558664] [2024-01-30 14:26:04,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:04,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:26:04,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:04,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:26:04,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:26:04,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 34 [2024-01-30 14:26:04,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:04,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:04,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 34 [2024-01-30 14:26:04,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:04,816 INFO L124 PetriNetUnfolderBase]: 72/169 cut-off events. [2024-01-30 14:26:04,816 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-01-30 14:26:04,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 169 events. 72/169 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 826 event pairs, 72 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 276. Up to 148 conditions per place. [2024-01-30 14:26:04,820 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 18 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-01-30 14:26:04,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 110 flow [2024-01-30 14:26:04,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:26:04,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:26:04,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-01-30 14:26:04,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5392156862745098 [2024-01-30 14:26:04,835 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 74 flow. Second operand 3 states and 55 transitions. [2024-01-30 14:26:04,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 110 flow [2024-01-30 14:26:04,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 102 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:26:04,839 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 66 flow [2024-01-30 14:26:04,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2024-01-30 14:26:04,846 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -4 predicate places. [2024-01-30 14:26:04,847 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 66 flow [2024-01-30 14:26:04,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:04,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:04,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-30 14:26:04,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:26:04,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-01-30 14:26:04,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:04,849 INFO L85 PathProgramCache]: Analyzing trace with hash 280624, now seen corresponding path program 1 times [2024-01-30 14:26:04,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:04,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061856255] [2024-01-30 14:26:04,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:04,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:04,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:04,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061856255] [2024-01-30 14:26:04,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061856255] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:04,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:04,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:26:04,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736180099] [2024-01-30 14:26:04,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:04,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:26:04,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:04,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:26:04,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:26:04,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2024-01-30 14:26:04,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:04,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:04,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2024-01-30 14:26:04,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:04,989 INFO L124 PetriNetUnfolderBase]: 72/168 cut-off events. [2024-01-30 14:26:04,990 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-30 14:26:04,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 168 events. 72/168 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 840 event pairs, 72 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 317. Up to 146 conditions per place. [2024-01-30 14:26:04,995 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 17 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2024-01-30 14:26:04,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 102 flow [2024-01-30 14:26:04,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:26:05,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:26:05,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-01-30 14:26:05,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2024-01-30 14:26:05,001 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 66 flow. Second operand 3 states and 56 transitions. [2024-01-30 14:26:05,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 102 flow [2024-01-30 14:26:05,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:26:05,003 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 64 flow [2024-01-30 14:26:05,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-01-30 14:26:05,006 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2024-01-30 14:26:05,006 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 64 flow [2024-01-30 14:26:05,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:05,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:05,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-30 14:26:05,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:26:05,007 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-01-30 14:26:05,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:05,008 INFO L85 PathProgramCache]: Analyzing trace with hash -229563710, now seen corresponding path program 1 times [2024-01-30 14:26:05,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:05,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365587487] [2024-01-30 14:26:05,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:05,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:05,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:05,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365587487] [2024-01-30 14:26:05,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365587487] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:05,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:05,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:26:05,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851685493] [2024-01-30 14:26:05,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:05,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:26:05,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:05,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:26:05,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:26:05,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-01-30 14:26:05,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:05,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:05,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-01-30 14:26:05,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:05,182 INFO L124 PetriNetUnfolderBase]: 72/164 cut-off events. [2024-01-30 14:26:05,183 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:26:05,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 164 events. 72/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 756 event pairs, 4 based on Foata normal form. 12/137 useless extension candidates. Maximal degree in co-relation 311. Up to 128 conditions per place. [2024-01-30 14:26:05,184 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 24 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2024-01-30 14:26:05,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 125 flow [2024-01-30 14:26:05,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:26:05,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:26:05,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-01-30 14:26:05,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073529411764706 [2024-01-30 14:26:05,185 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 64 flow. Second operand 4 states and 69 transitions. [2024-01-30 14:26:05,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 125 flow [2024-01-30 14:26:05,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 121 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:26:05,187 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 58 flow [2024-01-30 14:26:05,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-01-30 14:26:05,187 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2024-01-30 14:26:05,188 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 58 flow [2024-01-30 14:26:05,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:05,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:05,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:05,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:26:05,188 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-01-30 14:26:05,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:05,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1473459873, now seen corresponding path program 1 times [2024-01-30 14:26:05,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:05,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121453196] [2024-01-30 14:26:05,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:05,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:05,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:05,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:05,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121453196] [2024-01-30 14:26:05,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121453196] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:05,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:05,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:26:05,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754693856] [2024-01-30 14:26:05,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:05,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:26:05,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:05,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:26:05,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:26:05,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 34 [2024-01-30 14:26:05,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:05,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:05,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 34 [2024-01-30 14:26:05,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:05,284 INFO L124 PetriNetUnfolderBase]: 72/156 cut-off events. [2024-01-30 14:26:05,284 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-01-30 14:26:05,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 156 events. 72/156 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 662 event pairs, 19 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 241. Up to 101 conditions per place. [2024-01-30 14:26:05,285 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 24 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2024-01-30 14:26:05,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 123 flow [2024-01-30 14:26:05,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:26:05,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:26:05,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-01-30 14:26:05,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632352941176471 [2024-01-30 14:26:05,287 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 58 flow. Second operand 4 states and 63 transitions. [2024-01-30 14:26:05,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 123 flow [2024-01-30 14:26:05,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:26:05,288 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 57 flow [2024-01-30 14:26:05,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=57, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2024-01-30 14:26:05,288 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2024-01-30 14:26:05,289 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 57 flow [2024-01-30 14:26:05,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:05,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:05,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:05,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-30 14:26:05,289 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-01-30 14:26:05,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:05,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1567634625, now seen corresponding path program 1 times [2024-01-30 14:26:05,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:05,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314531549] [2024-01-30 14:26:05,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:05,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:05,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:05,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314531549] [2024-01-30 14:26:05,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314531549] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:05,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:05,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:26:05,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253080400] [2024-01-30 14:26:05,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:05,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:26:05,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:05,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:26:05,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:26:05,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-01-30 14:26:05,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:05,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:05,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-01-30 14:26:05,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:05,423 INFO L124 PetriNetUnfolderBase]: 42/104 cut-off events. [2024-01-30 14:26:05,423 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-30 14:26:05,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 104 events. 42/104 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 356 event pairs, 2 based on Foata normal form. 8/103 useless extension candidates. Maximal degree in co-relation 192. Up to 70 conditions per place. [2024-01-30 14:26:05,424 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 22 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2024-01-30 14:26:05,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 114 flow [2024-01-30 14:26:05,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:26:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:26:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-01-30 14:26:05,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49264705882352944 [2024-01-30 14:26:05,426 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 57 flow. Second operand 4 states and 67 transitions. [2024-01-30 14:26:05,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 114 flow [2024-01-30 14:26:05,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 111 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:26:05,427 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 52 flow [2024-01-30 14:26:05,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=52, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2024-01-30 14:26:05,428 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -9 predicate places. [2024-01-30 14:26:05,428 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 52 flow [2024-01-30 14:26:05,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:05,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:05,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:05,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-30 14:26:05,429 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-01-30 14:26:05,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:05,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1352032819, now seen corresponding path program 1 times [2024-01-30 14:26:05,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:05,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149605807] [2024-01-30 14:26:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:05,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:05,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:05,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:05,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149605807] [2024-01-30 14:26:05,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149605807] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:05,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:05,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:26:05,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473871979] [2024-01-30 14:26:05,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:05,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:26:05,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:05,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:26:05,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:26:05,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 34 [2024-01-30 14:26:05,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:05,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:05,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 34 [2024-01-30 14:26:05,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:05,524 INFO L124 PetriNetUnfolderBase]: 54/129 cut-off events. [2024-01-30 14:26:05,525 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-01-30 14:26:05,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 129 events. 54/129 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 392 event pairs, 9 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 260. Up to 82 conditions per place. [2024-01-30 14:26:05,526 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 25 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2024-01-30 14:26:05,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 35 transitions, 151 flow [2024-01-30 14:26:05,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:26:05,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:26:05,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-01-30 14:26:05,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073529411764706 [2024-01-30 14:26:05,527 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 52 flow. Second operand 4 states and 69 transitions. [2024-01-30 14:26:05,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 35 transitions, 151 flow [2024-01-30 14:26:05,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 35 transitions, 145 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:26:05,528 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 89 flow [2024-01-30 14:26:05,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2024-01-30 14:26:05,529 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2024-01-30 14:26:05,529 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 89 flow [2024-01-30 14:26:05,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:05,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:05,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:05,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-30 14:26:05,530 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-01-30 14:26:05,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:05,531 INFO L85 PathProgramCache]: Analyzing trace with hash -973532160, now seen corresponding path program 1 times [2024-01-30 14:26:05,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:05,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306464751] [2024-01-30 14:26:05,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:05,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:05,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:05,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306464751] [2024-01-30 14:26:05,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306464751] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:05,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:05,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:26:05,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313235163] [2024-01-30 14:26:05,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:05,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:26:05,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:05,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:26:05,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:26:05,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 34 [2024-01-30 14:26:05,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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) [2024-01-30 14:26:05,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:05,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 34 [2024-01-30 14:26:05,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:05,672 INFO L124 PetriNetUnfolderBase]: 48/117 cut-off events. [2024-01-30 14:26:05,672 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-01-30 14:26:05,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 117 events. 48/117 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 333 event pairs, 1 based on Foata normal form. 6/122 useless extension candidates. Maximal degree in co-relation 281. Up to 38 conditions per place. [2024-01-30 14:26:05,673 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 27 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2024-01-30 14:26:05,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 190 flow [2024-01-30 14:26:05,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:26:05,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:26:05,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2024-01-30 14:26:05,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2024-01-30 14:26:05,675 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 89 flow. Second operand 6 states and 90 transitions. [2024-01-30 14:26:05,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 190 flow [2024-01-30 14:26:05,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:26:05,676 INFO L231 Difference]: Finished difference. Result has 36 places, 23 transitions, 98 flow [2024-01-30 14:26:05,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=98, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2024-01-30 14:26:05,677 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2024-01-30 14:26:05,677 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 98 flow [2024-01-30 14:26:05,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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) [2024-01-30 14:26:05,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:05,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:05,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-30 14:26:05,678 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-01-30 14:26:05,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:05,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1417446104, now seen corresponding path program 1 times [2024-01-30 14:26:05,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:05,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513628716] [2024-01-30 14:26:05,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:05,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:05,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:05,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513628716] [2024-01-30 14:26:05,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513628716] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:05,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:05,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:26:05,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410144464] [2024-01-30 14:26:05,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:05,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:26:05,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:05,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:26:05,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:26:05,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-01-30 14:26:05,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 23 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:05,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:05,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-01-30 14:26:05,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:05,796 INFO L124 PetriNetUnfolderBase]: 32/87 cut-off events. [2024-01-30 14:26:05,796 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-01-30 14:26:05,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 87 events. 32/87 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 247 event pairs, 10 based on Foata normal form. 1/83 useless extension candidates. Maximal degree in co-relation 214. Up to 32 conditions per place. [2024-01-30 14:26:05,797 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 12 selfloop transitions, 4 changer transitions 15/36 dead transitions. [2024-01-30 14:26:05,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 36 transitions, 193 flow [2024-01-30 14:26:05,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:26:05,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:26:05,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-01-30 14:26:05,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6029411764705882 [2024-01-30 14:26:05,798 INFO L175 Difference]: Start difference. First operand has 36 places, 23 transitions, 98 flow. Second operand 4 states and 82 transitions. [2024-01-30 14:26:05,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 36 transitions, 193 flow [2024-01-30 14:26:05,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 169 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-30 14:26:05,800 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 78 flow [2024-01-30 14:26:05,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2024-01-30 14:26:05,800 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2024-01-30 14:26:05,800 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 78 flow [2024-01-30 14:26:05,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:05,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:05,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:05,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-30 14:26:05,801 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-01-30 14:26:05,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:05,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1204300714, now seen corresponding path program 2 times [2024-01-30 14:26:05,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:05,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134518173] [2024-01-30 14:26:05,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:05,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:05,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:05,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134518173] [2024-01-30 14:26:05,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134518173] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:05,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:05,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:26:05,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815887330] [2024-01-30 14:26:05,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:05,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:26:05,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:05,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:26:05,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:26:05,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-01-30 14:26:05,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:05,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:05,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-01-30 14:26:05,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:05,901 INFO L124 PetriNetUnfolderBase]: 12/40 cut-off events. [2024-01-30 14:26:05,901 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-01-30 14:26:05,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 40 events. 12/40 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 4 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 85. Up to 29 conditions per place. [2024-01-30 14:26:05,902 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2024-01-30 14:26:05,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 20 transitions, 108 flow [2024-01-30 14:26:05,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:26:05,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:26:05,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-01-30 14:26:05,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073529411764706 [2024-01-30 14:26:05,903 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 78 flow. Second operand 4 states and 69 transitions. [2024-01-30 14:26:05,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 20 transitions, 108 flow [2024-01-30 14:26:05,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 92 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-30 14:26:05,904 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2024-01-30 14:26:05,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2024-01-30 14:26:05,904 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2024-01-30 14:26:05,905 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2024-01-30 14:26:05,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:05,907 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 23 remaining) [2024-01-30 14:26:05,907 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 23 remaining) [2024-01-30 14:26:05,907 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 23 remaining) [2024-01-30 14:26:05,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 23 remaining) [2024-01-30 14:26:05,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 23 remaining) [2024-01-30 14:26:05,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 23 remaining) [2024-01-30 14:26:05,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 23 remaining) [2024-01-30 14:26:05,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 23 remaining) [2024-01-30 14:26:05,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 23 remaining) [2024-01-30 14:26:05,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 23 remaining) [2024-01-30 14:26:05,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 23 remaining) [2024-01-30 14:26:05,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (11 of 23 remaining) [2024-01-30 14:26:05,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 23 remaining) [2024-01-30 14:26:05,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 23 remaining) [2024-01-30 14:26:05,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 23 remaining) [2024-01-30 14:26:05,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 23 remaining) [2024-01-30 14:26:05,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 23 remaining) [2024-01-30 14:26:05,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 23 remaining) [2024-01-30 14:26:05,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 23 remaining) [2024-01-30 14:26:05,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 23 remaining) [2024-01-30 14:26:05,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 23 remaining) [2024-01-30 14:26:05,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 23 remaining) [2024-01-30 14:26:05,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 23 remaining) [2024-01-30 14:26:05,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-30 14:26:05,911 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:05,915 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-30 14:26:05,915 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-30 14:26:05,918 INFO L503 ceAbstractionStarter]: Automizer considered 11 witness invariants [2024-01-30 14:26:05,918 INFO L504 ceAbstractionStarter]: WitnessConsidered=11 [2024-01-30 14:26:05,919 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:26:05 BasicIcfg [2024-01-30 14:26:05,919 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-30 14:26:05,919 INFO L158 Benchmark]: Toolchain (without parser) took 2523.38ms. Allocated memory was 178.3MB in the beginning and 237.0MB in the end (delta: 58.7MB). Free memory was 140.5MB in the beginning and 199.2MB in the end (delta: -58.7MB). Peak memory consumption was 110.7MB. Max. memory is 16.1GB. [2024-01-30 14:26:05,920 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:26:05,920 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 143.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:26:05,920 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.39ms. Allocated memory is still 178.3MB. Free memory was 140.5MB in the beginning and 126.5MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-01-30 14:26:05,920 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.16ms. Allocated memory is still 178.3MB. Free memory was 126.5MB in the beginning and 125.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:26:05,921 INFO L158 Benchmark]: Boogie Preprocessor took 52.17ms. Allocated memory is still 178.3MB. Free memory was 125.1MB in the beginning and 123.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:26:05,921 INFO L158 Benchmark]: RCFGBuilder took 523.60ms. Allocated memory is still 178.3MB. Free memory was 123.0MB in the beginning and 95.8MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-01-30 14:26:05,921 INFO L158 Benchmark]: TraceAbstraction took 1637.41ms. Allocated memory was 178.3MB in the beginning and 237.0MB in the end (delta: 58.7MB). Free memory was 95.1MB in the beginning and 199.2MB in the end (delta: -104.1MB). Peak memory consumption was 66.7MB. Max. memory is 16.1GB. [2024-01-30 14:26:05,922 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 143.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.39ms. Allocated memory is still 178.3MB. Free memory was 140.5MB in the beginning and 126.5MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.16ms. Allocated memory is still 178.3MB. Free memory was 126.5MB in the beginning and 125.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.17ms. Allocated memory is still 178.3MB. Free memory was 125.1MB in the beginning and 123.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 523.60ms. Allocated memory is still 178.3MB. Free memory was 123.0MB in the beginning and 95.8MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1637.41ms. Allocated memory was 178.3MB in the beginning and 237.0MB in the end (delta: 58.7MB). Free memory was 95.1MB in the beginning and 199.2MB in the end (delta: -104.1MB). Peak memory consumption was 66.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 42]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 43]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 45]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 49]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 50]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 51]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 52]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 54]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 60]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 61]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 72]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 56 locations, 23 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 183 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 138 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 438 IncrementalHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 14 mSDtfsCounter, 438 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=7, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-30 14:26:05,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE