./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_1_neg.i --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/13-privatized_18-first-reads_unknown_1_neg.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/goblint-regression/13-privatized_18-first-reads_unknown_1_neg.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_18-first-reads_unknown_1_neg.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 14:40:06,635 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:40:06,729 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:40:06,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:40:06,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:40:06,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:40:06,761 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:40:06,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:40:06,762 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:40:06,764 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:40:06,765 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:40:06,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:40:06,766 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:40:06,767 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:40:06,767 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:40:06,767 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:40:06,767 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:40:06,768 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:40:06,768 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:40:06,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:40:06,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:40:06,768 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:40:06,769 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:40:06,769 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:40:06,769 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:40:06,769 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:40:06,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:40:06,770 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:40:06,770 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:40:06,770 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:40:06,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:40:06,771 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:40:06,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:40:06,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:40:06,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:40:06,772 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:40:06,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:40:06,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:40:06,772 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:40:06,772 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:40:06,773 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:40:06,773 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:40:06,773 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:40:06,773 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:40:06,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:40:06,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:40:06,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:40:06,996 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:40:06,997 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:40:06,997 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_1_neg.i [2024-01-30 14:40:08,050 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:40:08,256 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:40:08,256 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_1_neg.i [2024-01-30 14:40:08,271 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eba004bad/480dc5a7fd2d48f3b785e53f0276055e/FLAGad6617cb5 [2024-01-30 14:40:08,280 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eba004bad/480dc5a7fd2d48f3b785e53f0276055e [2024-01-30 14:40:08,282 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:40:08,282 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:40:08,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_18-first-reads_unknown_1_neg.yml/witness.yml [2024-01-30 14:40:08,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:40:08,363 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:40:08,364 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:40:08,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:40:08,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:40:08,368 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:40:08" (1/2) ... [2024-01-30 14:40:08,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cebf7ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:40:08, skipping insertion in model container [2024-01-30 14:40:08,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:40:08" (1/2) ... [2024-01-30 14:40:08,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@268527ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:40:08, skipping insertion in model container [2024-01-30 14:40:08,372 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:40:08" (2/2) ... [2024-01-30 14:40:08,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cebf7ed and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:40:08, skipping insertion in model container [2024-01-30 14:40:08,372 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:40:08" (2/2) ... [2024-01-30 14:40:08,373 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:40:08,418 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:40:08,420 INFO L98 nessWitnessExtractor]: Location invariant before [L688-L688] ((glob1 == 0) && (t == 42)) && ((unsigned long )arg == 0UL) [2024-01-30 14:40:08,420 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] ((((((0 <= glob1) && (0 <= t)) && (glob1 <= 1)) && (t <= 1)) && ((unsigned long )arg == 0UL)) && (glob1 == 0 || glob1 == 1)) && (t == 0 || t == 1) [2024-01-30 14:40:08,420 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] glob1 == 0 [2024-01-30 14:40:08,420 INFO L98 nessWitnessExtractor]: Location invariant before [L19-L19] ((((((((0 <= glob1) && (glob1 <= 1)) && (glob1 == 0 || glob1 == 1)) && (0 <= glob1)) && (glob1 <= 1)) && (glob1 == 0 || glob1 == 1)) && (0 <= glob1)) && (glob1 <= 1)) && (glob1 == 0 || glob1 == 1) [2024-01-30 14:40:08,420 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] ((((0 <= t) && (t <= 1)) && (glob1 == 0)) && ((unsigned long )arg == 0UL)) && (t == 0 || t == 1) [2024-01-30 14:40:08,421 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (((0 <= glob1) && (glob1 <= 1)) && ((unsigned long )arg == 0UL)) && (glob1 == 0 || glob1 == 1) [2024-01-30 14:40:08,421 INFO L98 nessWitnessExtractor]: Location invariant before [L686-L686] (unsigned long )arg == 0UL [2024-01-30 14:40:08,421 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] (((0 <= t) && (t <= 1)) && ((unsigned long )arg == 0UL)) && (t == 0 || t == 1) [2024-01-30 14:40:08,421 INFO L98 nessWitnessExtractor]: Location invariant before [L685-L685] (unsigned long )arg == 0UL [2024-01-30 14:40:08,421 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] ((((((0 <= glob1) && (0 <= t)) && (glob1 <= 1)) && (t <= 1)) && ((unsigned long )arg == 0UL)) && (glob1 == 0 || glob1 == 1)) && (t == 0 || t == 1) [2024-01-30 14:40:08,422 INFO L98 nessWitnessExtractor]: Location invariant before [L687-L689] (glob1 == 0) && ((unsigned long )arg == 0UL) [2024-01-30 14:40:08,422 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] glob1 == 0 [2024-01-30 14:40:08,453 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:40:08,596 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_1_neg.i[1097,1110] [2024-01-30 14:40:08,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:40:08,719 INFO L202 MainTranslator]: Completed pre-run [2024-01-30 14:40:08,728 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_1_neg.i[1097,1110] [2024-01-30 14:40:08,728 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_assert(int cond) { if(!(cond)) { ERROR: {reach_error();abort();} } } 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 14:40:08,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:40:08,805 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:40:08,806 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:40:08 WrapperNode [2024-01-30 14:40:08,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:40:08,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:40:08,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:40:08,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:40:08,812 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 02:40:08" (1/1) ... [2024-01-30 14:40:08,820 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 02:40:08" (1/1) ... [2024-01-30 14:40:08,836 INFO L138 Inliner]: procedures = 164, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 72 [2024-01-30 14:40:08,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:40:08,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:40:08,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:40:08,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:40:08,844 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 02:40:08" (1/1) ... [2024-01-30 14:40:08,845 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 02:40:08" (1/1) ... [2024-01-30 14:40:08,847 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 02:40:08" (1/1) ... [2024-01-30 14:40:08,859 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-01-30 14:40:08,859 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 02:40:08" (1/1) ... [2024-01-30 14:40:08,859 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 02:40:08" (1/1) ... [2024-01-30 14:40:08,863 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 02:40:08" (1/1) ... [2024-01-30 14:40:08,864 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 02:40:08" (1/1) ... [2024-01-30 14:40:08,865 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 02:40:08" (1/1) ... [2024-01-30 14:40:08,866 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 02:40:08" (1/1) ... [2024-01-30 14:40:08,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:40:08,868 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:40:08,868 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:40:08,869 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:40:08,869 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 02:40:08" (1/1) ... [2024-01-30 14:40:08,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:40:08,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:40:08,889 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 14:40:08,901 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 14:40:08,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:40:08,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:40:08,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:40:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:40:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:40:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:40:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-30 14:40:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:40:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:40:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-30 14:40:08,918 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-30 14:40:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:40:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:40:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:40:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:40:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-30 14:40:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:40:08,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:40:08,920 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 14:40:09,014 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:40:09,015 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:40:09,183 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:40:09,183 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:40:09,286 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:40:09,287 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-30 14:40:09,288 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:40:09 BoogieIcfgContainer [2024-01-30 14:40:09,288 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:40:09,290 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:40:09,290 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:40:09,293 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:40:09,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:40:08" (1/4) ... [2024-01-30 14:40:09,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352c481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:40:09, skipping insertion in model container [2024-01-30 14:40:09,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:40:08" (2/4) ... [2024-01-30 14:40:09,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352c481 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:40:09, skipping insertion in model container [2024-01-30 14:40:09,295 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 02:40:08" (3/4) ... [2024-01-30 14:40:09,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352c481 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:40:09, skipping insertion in model container [2024-01-30 14:40:09,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:40:09" (4/4) ... [2024-01-30 14:40:09,296 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_18-first-reads_unknown_1_neg.i [2024-01-30 14:40:09,309 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:40:09,310 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-01-30 14:40:09,310 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:40:09,396 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-01-30 14:40:09,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 44 transitions, 95 flow [2024-01-30 14:40:09,456 INFO L124 PetriNetUnfolderBase]: 2/43 cut-off events. [2024-01-30 14:40:09,456 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-30 14:40:09,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 43 events. 2/43 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-01-30 14:40:09,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 44 transitions, 95 flow [2024-01-30 14:40:09,463 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 41 transitions, 85 flow [2024-01-30 14:40:09,473 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:40:09,479 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;@5b6ade7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:40:09,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-01-30 14:40:09,482 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:40:09,482 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:40:09,482 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:40:09,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:40:09,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:40:09,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2024-01-30 14:40:09,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:40:09,487 INFO L85 PathProgramCache]: Analyzing trace with hash 6990, now seen corresponding path program 1 times [2024-01-30 14:40:09,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:40:09,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919485337] [2024-01-30 14:40:09,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:40:09,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:40:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:40:09,687 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 14:40:09,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:40:09,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919485337] [2024-01-30 14:40:09,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919485337] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:40:09,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:40:09,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:40:09,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326393852] [2024-01-30 14:40:09,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:40:09,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:40:09,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:40:09,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:40:09,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:40:09,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-01-30 14:40:09,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 14:40:09,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:40:09,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-01-30 14:40:09,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:40:09,852 INFO L124 PetriNetUnfolderBase]: 81/281 cut-off events. [2024-01-30 14:40:09,853 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:40:09,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 281 events. 81/281 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1413 event pairs, 53 based on Foata normal form. 13/271 useless extension candidates. Maximal degree in co-relation 459. Up to 137 conditions per place. [2024-01-30 14:40:09,857 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 25 selfloop transitions, 4 changer transitions 0/48 dead transitions. [2024-01-30 14:40:09,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 157 flow [2024-01-30 14:40:09,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:40:09,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:40:09,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-01-30 14:40:09,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2024-01-30 14:40:09,868 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 85 flow. Second operand 3 states and 93 transitions. [2024-01-30 14:40:09,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 157 flow [2024-01-30 14:40:09,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:40:09,875 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 106 flow [2024-01-30 14:40:09,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2024-01-30 14:40:09,882 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-01-30 14:40:09,882 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 106 flow [2024-01-30 14:40:09,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 14:40:09,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:40:09,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-30 14:40:09,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:40:09,884 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2024-01-30 14:40:09,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:40:09,885 INFO L85 PathProgramCache]: Analyzing trace with hash 208492308, now seen corresponding path program 1 times [2024-01-30 14:40:09,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:40:09,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874454999] [2024-01-30 14:40:09,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:40:09,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:40:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:40:10,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:40:10,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:40:10,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874454999] [2024-01-30 14:40:10,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874454999] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:40:10,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:40:10,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:40:10,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410409878] [2024-01-30 14:40:10,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:40:10,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:40:10,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:40:10,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:40:10,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:40:10,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 44 [2024-01-30 14:40:10,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:40:10,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:40:10,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 44 [2024-01-30 14:40:10,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:40:10,103 INFO L124 PetriNetUnfolderBase]: 64/259 cut-off events. [2024-01-30 14:40:10,104 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-01-30 14:40:10,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448 conditions, 259 events. 64/259 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1295 event pairs, 25 based on Foata normal form. 5/234 useless extension candidates. Maximal degree in co-relation 434. Up to 136 conditions per place. [2024-01-30 14:40:10,107 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 20 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-01-30 14:40:10,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 43 transitions, 154 flow [2024-01-30 14:40:10,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:40:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:40:10,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-01-30 14:40:10,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6306818181818182 [2024-01-30 14:40:10,117 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 106 flow. Second operand 4 states and 111 transitions. [2024-01-30 14:40:10,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 43 transitions, 154 flow [2024-01-30 14:40:10,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:40:10,119 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 98 flow [2024-01-30 14:40:10,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-01-30 14:40:10,121 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-01-30 14:40:10,121 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 98 flow [2024-01-30 14:40:10,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:40:10,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:40:10,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:40:10,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:40:10,122 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2024-01-30 14:40:10,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:40:10,123 INFO L85 PathProgramCache]: Analyzing trace with hash -647019945, now seen corresponding path program 1 times [2024-01-30 14:40:10,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:40:10,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033594822] [2024-01-30 14:40:10,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:40:10,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:40:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:40:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:40:10,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:40:10,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033594822] [2024-01-30 14:40:10,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033594822] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:40:10,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:40:10,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:40:10,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723896856] [2024-01-30 14:40:10,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:40:10,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:40:10,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:40:10,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:40:10,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:40:10,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-01-30 14:40:10,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:40:10,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:40:10,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-01-30 14:40:10,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:40:10,408 INFO L124 PetriNetUnfolderBase]: 105/346 cut-off events. [2024-01-30 14:40:10,408 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-01-30 14:40:10,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 644 conditions, 346 events. 105/346 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1798 event pairs, 9 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 630. Up to 140 conditions per place. [2024-01-30 14:40:10,411 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 34 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2024-01-30 14:40:10,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 218 flow [2024-01-30 14:40:10,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:40:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:40:10,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-01-30 14:40:10,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2024-01-30 14:40:10,416 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 98 flow. Second operand 4 states and 100 transitions. [2024-01-30 14:40:10,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 218 flow [2024-01-30 14:40:10,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 215 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:40:10,418 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 137 flow [2024-01-30 14:40:10,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-01-30 14:40:10,420 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-01-30 14:40:10,420 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 137 flow [2024-01-30 14:40:10,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:40:10,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:40:10,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:40:10,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:40:10,421 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2024-01-30 14:40:10,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:40:10,422 INFO L85 PathProgramCache]: Analyzing trace with hash 984098266, now seen corresponding path program 1 times [2024-01-30 14:40:10,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:40:10,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772935822] [2024-01-30 14:40:10,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:40:10,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:40:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:40:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:40:10,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:40:10,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772935822] [2024-01-30 14:40:10,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772935822] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:40:10,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:40:10,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:40:10,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858817975] [2024-01-30 14:40:10,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:40:10,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:40:10,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:40:10,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:40:10,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:40:10,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-01-30 14:40:10,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:40:10,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:40:10,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-01-30 14:40:10,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:40:10,623 INFO L124 PetriNetUnfolderBase]: 115/350 cut-off events. [2024-01-30 14:40:10,623 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-01-30 14:40:10,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 350 events. 115/350 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1759 event pairs, 9 based on Foata normal form. 6/338 useless extension candidates. Maximal degree in co-relation 754. Up to 151 conditions per place. [2024-01-30 14:40:10,627 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 40 selfloop transitions, 9 changer transitions 0/59 dead transitions. [2024-01-30 14:40:10,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 281 flow [2024-01-30 14:40:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:40:10,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:40:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-01-30 14:40:10,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-01-30 14:40:10,629 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 137 flow. Second operand 5 states and 105 transitions. [2024-01-30 14:40:10,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 281 flow [2024-01-30 14:40:10,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 271 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:40:10,633 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 143 flow [2024-01-30 14:40:10,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-01-30 14:40:10,634 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-01-30 14:40:10,634 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 143 flow [2024-01-30 14:40:10,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:40:10,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:40:10,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:40:10,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-30 14:40:10,635 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2024-01-30 14:40:10,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:40:10,636 INFO L85 PathProgramCache]: Analyzing trace with hash 442276438, now seen corresponding path program 1 times [2024-01-30 14:40:10,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:40:10,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484051427] [2024-01-30 14:40:10,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:40:10,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:40:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:40:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:40:10,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:40:10,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484051427] [2024-01-30 14:40:10,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484051427] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:40:10,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:40:10,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:40:10,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313109846] [2024-01-30 14:40:10,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:40:10,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:40:10,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:40:10,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:40:10,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:40:10,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-01-30 14:40:10,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 143 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 14:40:10,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:40:10,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-01-30 14:40:10,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:40:10,914 INFO L124 PetriNetUnfolderBase]: 156/435 cut-off events. [2024-01-30 14:40:10,915 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-01-30 14:40:10,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 435 events. 156/435 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2230 event pairs, 11 based on Foata normal form. 12/418 useless extension candidates. Maximal degree in co-relation 971. Up to 148 conditions per place. [2024-01-30 14:40:10,917 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 46 selfloop transitions, 9 changer transitions 5/67 dead transitions. [2024-01-30 14:40:10,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 331 flow [2024-01-30 14:40:10,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:40:10,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:40:10,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-01-30 14:40:10,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954545454545455 [2024-01-30 14:40:10,918 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 143 flow. Second operand 5 states and 109 transitions. [2024-01-30 14:40:10,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 331 flow [2024-01-30 14:40:10,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 67 transitions, 313 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:40:10,920 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 165 flow [2024-01-30 14:40:10,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2024-01-30 14:40:10,921 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-01-30 14:40:10,921 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 165 flow [2024-01-30 14:40:10,921 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 14:40:10,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:40:10,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:40:10,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-30 14:40:10,922 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2024-01-30 14:40:10,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:40:10,922 INFO L85 PathProgramCache]: Analyzing trace with hash 442275413, now seen corresponding path program 1 times [2024-01-30 14:40:10,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:40:10,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043149049] [2024-01-30 14:40:10,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:40:10,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:40:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:40:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:40:10,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:40:10,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043149049] [2024-01-30 14:40:10,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043149049] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:40:10,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:40:10,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:40:10,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762038392] [2024-01-30 14:40:10,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:40:10,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:40:10,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:40:10,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:40:10,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:40:11,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2024-01-30 14:40:11,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 14:40:11,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:40:11,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2024-01-30 14:40:11,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:40:11,092 INFO L124 PetriNetUnfolderBase]: 96/324 cut-off events. [2024-01-30 14:40:11,092 INFO L125 PetriNetUnfolderBase]: For 185/187 co-relation queries the response was YES. [2024-01-30 14:40:11,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 324 events. 96/324 cut-off events. For 185/187 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1568 event pairs, 5 based on Foata normal form. 10/315 useless extension candidates. Maximal degree in co-relation 700. Up to 169 conditions per place. [2024-01-30 14:40:11,094 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 29 selfloop transitions, 3 changer transitions 2/47 dead transitions. [2024-01-30 14:40:11,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 221 flow [2024-01-30 14:40:11,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:40:11,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:40:11,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-01-30 14:40:11,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-01-30 14:40:11,095 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 165 flow. Second operand 4 states and 104 transitions. [2024-01-30 14:40:11,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 221 flow [2024-01-30 14:40:11,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 199 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-01-30 14:40:11,098 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 109 flow [2024-01-30 14:40:11,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-01-30 14:40:11,098 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-01-30 14:40:11,099 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 109 flow [2024-01-30 14:40:11,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 14:40:11,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:40:11,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:40:11,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-30 14:40:11,099 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2024-01-30 14:40:11,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:40:11,099 INFO L85 PathProgramCache]: Analyzing trace with hash 825636156, now seen corresponding path program 1 times [2024-01-30 14:40:11,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:40:11,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027593487] [2024-01-30 14:40:11,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:40:11,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:40:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:40:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:40:11,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:40:11,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027593487] [2024-01-30 14:40:11,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027593487] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:40:11,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:40:11,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:40:11,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949797490] [2024-01-30 14:40:11,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:40:11,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:40:11,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:40:11,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:40:11,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:40:11,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-01-30 14:40:11,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 109 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:40:11,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:40:11,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-01-30 14:40:11,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:40:11,275 INFO L124 PetriNetUnfolderBase]: 86/272 cut-off events. [2024-01-30 14:40:11,275 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-01-30 14:40:11,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 272 events. 86/272 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1166 event pairs, 5 based on Foata normal form. 12/271 useless extension candidates. Maximal degree in co-relation 578. Up to 148 conditions per place. [2024-01-30 14:40:11,276 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 34 selfloop transitions, 4 changer transitions 1/48 dead transitions. [2024-01-30 14:40:11,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 211 flow [2024-01-30 14:40:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:40:11,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:40:11,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-01-30 14:40:11,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2024-01-30 14:40:11,278 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 109 flow. Second operand 5 states and 106 transitions. [2024-01-30 14:40:11,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 211 flow [2024-01-30 14:40:11,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 202 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-30 14:40:11,279 INFO L231 Difference]: Finished difference. Result has 45 places, 33 transitions, 100 flow [2024-01-30 14:40:11,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2024-01-30 14:40:11,280 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-01-30 14:40:11,280 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 100 flow [2024-01-30 14:40:11,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:40:11,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:40:11,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:40:11,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-30 14:40:11,280 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2024-01-30 14:40:11,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:40:11,281 INFO L85 PathProgramCache]: Analyzing trace with hash -174097639, now seen corresponding path program 1 times [2024-01-30 14:40:11,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:40:11,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814755865] [2024-01-30 14:40:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:40:11,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:40:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-30 14:40:11,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-30 14:40:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-30 14:40:11,308 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-30 14:40:11,308 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-30 14:40:11,309 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr6ASSERT_VIOLATIONERROR_FUNCTION (22 of 23 remaining) [2024-01-30 14:40:11,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 23 remaining) [2024-01-30 14:40:11,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 23 remaining) [2024-01-30 14:40:11,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 23 remaining) [2024-01-30 14:40:11,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 23 remaining) [2024-01-30 14:40:11,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 23 remaining) [2024-01-30 14:40:11,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 23 remaining) [2024-01-30 14:40:11,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 23 remaining) [2024-01-30 14:40:11,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 23 remaining) [2024-01-30 14:40:11,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 23 remaining) [2024-01-30 14:40:11,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONERROR_FUNCTION (12 of 23 remaining) [2024-01-30 14:40:11,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 23 remaining) [2024-01-30 14:40:11,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 23 remaining) [2024-01-30 14:40:11,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 23 remaining) [2024-01-30 14:40:11,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 23 remaining) [2024-01-30 14:40:11,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 23 remaining) [2024-01-30 14:40:11,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 23 remaining) [2024-01-30 14:40:11,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 23 remaining) [2024-01-30 14:40:11,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 23 remaining) [2024-01-30 14:40:11,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 23 remaining) [2024-01-30 14:40:11,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 23 remaining) [2024-01-30 14:40:11,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 23 remaining) [2024-01-30 14:40:11,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 23 remaining) [2024-01-30 14:40:11,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-30 14:40:11,313 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:40:11,320 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-30 14:40:11,320 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-30 14:40:11,335 INFO L503 ceAbstractionStarter]: Automizer considered 11 witness invariants [2024-01-30 14:40:11,336 INFO L504 ceAbstractionStarter]: WitnessConsidered=11 [2024-01-30 14:40:11,336 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:40:11 BasicIcfg [2024-01-30 14:40:11,336 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-30 14:40:11,337 INFO L158 Benchmark]: Toolchain (without parser) took 2973.69ms. Allocated memory was 180.4MB in the beginning and 245.4MB in the end (delta: 65.0MB). Free memory was 146.6MB in the beginning and 135.0MB in the end (delta: 11.6MB). Peak memory consumption was 75.2MB. Max. memory is 16.1GB. [2024-01-30 14:40:11,337 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory was 86.6MB in the beginning and 86.5MB in the end (delta: 78.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:40:11,337 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 180.4MB. Free memory is still 150.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:40:11,337 INFO L158 Benchmark]: CACSL2BoogieTranslator took 442.31ms. Allocated memory is still 180.4MB. Free memory was 146.6MB in the beginning and 123.4MB in the end (delta: 23.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-01-30 14:40:11,337 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.58ms. Allocated memory is still 180.4MB. Free memory was 123.4MB in the beginning and 121.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:40:11,338 INFO L158 Benchmark]: Boogie Preprocessor took 30.61ms. Allocated memory is still 180.4MB. Free memory was 121.4MB in the beginning and 119.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:40:11,338 INFO L158 Benchmark]: RCFGBuilder took 419.92ms. Allocated memory is still 180.4MB. Free memory was 119.4MB in the beginning and 94.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-01-30 14:40:11,338 INFO L158 Benchmark]: TraceAbstraction took 2045.98ms. Allocated memory was 180.4MB in the beginning and 245.4MB in the end (delta: 65.0MB). Free memory was 93.5MB in the beginning and 135.0MB in the end (delta: -41.5MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2024-01-30 14:40:11,339 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory was 86.6MB in the beginning and 86.5MB in the end (delta: 78.8kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 180.4MB. Free memory is still 150.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 442.31ms. Allocated memory is still 180.4MB. Free memory was 146.6MB in the beginning and 123.4MB in the end (delta: 23.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.58ms. Allocated memory is still 180.4MB. Free memory was 123.4MB in the beginning and 121.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.61ms. Allocated memory is still 180.4MB. Free memory was 121.4MB in the beginning and 119.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 419.92ms. Allocated memory is still 180.4MB. Free memory was 119.4MB in the beginning and 94.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2045.98ms. Allocated memory was 180.4MB in the beginning and 245.4MB in the end (delta: 65.0MB). Free memory was 93.5MB in the beginning and 135.0MB in the end (delta: -41.5MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L682] 0 int glob1 = 0; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L697] 0 pthread_t id; VAL [glob1=0, id={5:0}, mutex1={3:0}] [L698] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[glob1],IntegerLiteral[0]]]] [L698] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [glob1=0, id={5:0}, mutex1={3:0}] [L685] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] [L685] 1 int t = __VERIFIER_nondet_int(); [L686] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, glob1=0, mutex1={3:0}, t=0] [L687] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[glob1],IntegerLiteral[0]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]]] VAL [arg={0:0}, arg={0:0}, glob1=0, mutex1={3:0}, t=0] [L687] COND FALSE 1 !(t == 42) VAL [arg={0:0}, arg={0:0}, glob1=0, mutex1={3:0}, t=0] [L690] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[glob1]],BinaryExpression[COMPLEQ,IdentifierExpression[glob1],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[glob1],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[glob1],IntegerLiteral[1]]]]]] [L690] 1 t = glob1 VAL [arg={0:0}, arg={0:0}, glob1=0, mutex1={3:0}, t=0] [L691] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[glob1]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[t]]],BinaryExpression[COMPLEQ,IdentifierExpression[glob1],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[t],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[glob1],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[glob1],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[t],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[t],IntegerLiteral[1]]]]]] [L691] CALL 1 __VERIFIER_assert(!(t == 0)) [L19] COND TRUE 1 !(cond) VAL [\old(cond)=0, cond=0, glob1=0, mutex1={3:0}] [L19] 1 reach_error() VAL [\old(cond)=0, cond=0, glob1=0, mutex1={3:0}] - UnprovableResult [Line: 698]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 687]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 688]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 690]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 691]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 73 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: 1.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 433 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 299 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 576 IncrementalHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 32 mSDtfsCounter, 576 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=5, InterpolantAutomatonStates: 30, 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, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 504 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 RESULT: Ultimate proved your program to be incorrect! [2024-01-30 14:40:11,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE