./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/test-hard1.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/test-hard1.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 18:17:42,229 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 18:17:42,309 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 18:17:42,327 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 18:17:42,327 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 18:17:42,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 18:17:42,359 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 18:17:42,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 18:17:42,360 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 18:17:42,363 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 18:17:42,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 18:17:42,364 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 18:17:42,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 18:17:42,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 18:17:42,366 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 18:17:42,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 18:17:42,366 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 18:17:42,366 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 18:17:42,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 18:17:42,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 18:17:42,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 18:17:42,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 18:17:42,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 18:17:42,368 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 18:17:42,368 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 18:17:42,368 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 18:17:42,368 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 18:17:42,368 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 18:17:42,369 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 18:17:42,369 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 18:17:42,370 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 18:17:42,370 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 18:17:42,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:17:42,371 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 18:17:42,371 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 18:17:42,371 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 18:17:42,371 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 18:17:42,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 18:17:42,371 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 18:17:42,372 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 18:17:42,372 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 18:17:42,372 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 18:17:42,372 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 18:17:42,372 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 18:17:42,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 18:17:42,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 18:17:42,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 18:17:42,752 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 18:17:42,753 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 18:17:42,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/test-hard1.wvr.yml/witness.yml [2024-06-21 18:17:42,869 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 18:17:42,869 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 18:17:42,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c [2024-06-21 18:17:44,469 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 18:17:44,749 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 18:17:44,750 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c [2024-06-21 18:17:44,756 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0afa486a2/ee67c80c594740cb99d951eb3a21d4ef/FLAG953f03354 [2024-06-21 18:17:44,785 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0afa486a2/ee67c80c594740cb99d951eb3a21d4ef [2024-06-21 18:17:44,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 18:17:44,786 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 18:17:44,789 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 18:17:44,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 18:17:44,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 18:17:44,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:17:42" (1/2) ... [2024-06-21 18:17:44,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c057d65 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:17:44, skipping insertion in model container [2024-06-21 18:17:44,797 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:17:42" (1/2) ... [2024-06-21 18:17:44,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10d4514c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:17:44, skipping insertion in model container [2024-06-21 18:17:44,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:17:44" (2/2) ... [2024-06-21 18:17:44,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c057d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:17:44, skipping insertion in model container [2024-06-21 18:17:44,816 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:17:44" (2/2) ... [2024-06-21 18:17:44,817 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 18:17:44,833 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 18:17:44,837 INFO L97 edCorrectnessWitness]: Location invariant before [L132-L132] ! multithreaded || (((((((2147483648LL + (long long )m) + (long long )n1 >= 0LL && (2147483648LL + (long long )m) + (long long )n2 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n1) + (long long )n2 >= 0LL) && (6442450943LL - (long long )m) + (long long )n1 >= 0LL) && (6442450943LL - (long long )m) + (long long )n2 >= 0LL) && (4294967295LL + (long long )n1) - (long long )n2 >= 0LL) [2024-06-21 18:17:44,837 INFO L97 edCorrectnessWitness]: Location invariant before [L131-L131] ! multithreaded || (((((((2147483648LL + (long long )m) + (long long )n1 >= 0LL && (2147483648LL + (long long )m) + (long long )n2 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n1) + (long long )n2 >= 0LL) && (6442450943LL - (long long )m) + (long long )n1 >= 0LL) && (6442450943LL - (long long )m) + (long long )n2 >= 0LL) && (4294967295LL + (long long )n1) - (long long )n2 >= 0LL) [2024-06-21 18:17:44,837 INFO L97 edCorrectnessWitness]: Location invariant before [L130-L130] ! multithreaded || (((((((2147483648LL + (long long )m) + (long long )n1 >= 0LL && (2147483648LL + (long long )m) + (long long )n2 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n1) + (long long )n2 >= 0LL) && (6442450943LL - (long long )m) + (long long )n1 >= 0LL) && (6442450943LL - (long long )m) + (long long )n2 >= 0LL) && (4294967295LL + (long long )n1) - (long long )n2 >= 0LL) [2024-06-21 18:17:44,837 INFO L97 edCorrectnessWitness]: Location invariant before [L133-L133] ! multithreaded || (((((((2147483648LL + (long long )m) + (long long )n1 >= 0LL && (2147483648LL + (long long )m) + (long long )n2 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n1) + (long long )n2 >= 0LL) && (6442450943LL - (long long )m) + (long long )n1 >= 0LL) && (6442450943LL - (long long )m) + (long long )n2 >= 0LL) && (4294967295LL + (long long )n1) - (long long )n2 >= 0LL) [2024-06-21 18:17:44,837 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 18:17:44,838 INFO L106 edCorrectnessWitness]: ghost_update [L129-L129] multithreaded = 1; [2024-06-21 18:17:44,866 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 18:17:45,161 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:17:45,171 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 18:17:45,334 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:17:45,360 INFO L206 MainTranslator]: Completed translation [2024-06-21 18:17:45,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:17:45 WrapperNode [2024-06-21 18:17:45,371 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 18:17:45,373 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 18:17:45,374 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 18:17:45,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 18:17:45,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:17:45" (1/1) ... [2024-06-21 18:17:45,402 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:17:45" (1/1) ... [2024-06-21 18:17:45,454 INFO L138 Inliner]: procedures = 23, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 82 [2024-06-21 18:17:45,456 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 18:17:45,457 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 18:17:45,457 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 18:17:45,457 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 18:17:45,469 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:17:45" (1/1) ... [2024-06-21 18:17:45,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:17:45" (1/1) ... [2024-06-21 18:17:45,493 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:17:45" (1/1) ... [2024-06-21 18:17:45,512 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-21 18:17:45,513 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:17:45" (1/1) ... [2024-06-21 18:17:45,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:17:45" (1/1) ... [2024-06-21 18:17:45,533 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:17:45" (1/1) ... [2024-06-21 18:17:45,539 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:17:45" (1/1) ... [2024-06-21 18:17:45,542 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:17:45" (1/1) ... [2024-06-21 18:17:45,544 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:17:45" (1/1) ... [2024-06-21 18:17:45,546 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 18:17:45,547 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 18:17:45,547 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 18:17:45,548 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 18:17:45,548 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:17:45" (1/1) ... [2024-06-21 18:17:45,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:17:45,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 18:17:45,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-21 18:17:45,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-21 18:17:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 18:17:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-21 18:17:45,718 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-21 18:17:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-21 18:17:45,718 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-21 18:17:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-21 18:17:45,719 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-21 18:17:45,719 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-21 18:17:45,719 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-21 18:17:45,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 18:17:45,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 18:17:45,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 18:17:45,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 18:17:45,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 18:17:45,732 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 18:17:45,863 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 18:17:45,865 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 18:17:46,335 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 18:17:46,339 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 18:17:46,618 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 18:17:46,618 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-21 18:17:46,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:17:46 BoogieIcfgContainer [2024-06-21 18:17:46,619 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 18:17:46,620 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 18:17:46,620 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 18:17:46,623 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 18:17:46,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:17:42" (1/4) ... [2024-06-21 18:17:46,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e10bdac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:17:46, skipping insertion in model container [2024-06-21 18:17:46,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 06:17:44" (2/4) ... [2024-06-21 18:17:46,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e10bdac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:17:46, skipping insertion in model container [2024-06-21 18:17:46,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:17:45" (3/4) ... [2024-06-21 18:17:46,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e10bdac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:17:46, skipping insertion in model container [2024-06-21 18:17:46,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:17:46" (4/4) ... [2024-06-21 18:17:46,625 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2024-06-21 18:17:46,662 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 18:17:46,663 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 18:17:46,663 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 18:17:46,745 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-21 18:17:46,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 51 transitions, 130 flow [2024-06-21 18:17:46,841 INFO L124 PetriNetUnfolderBase]: 4/47 cut-off events. [2024-06-21 18:17:46,852 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-21 18:17:46,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 47 events. 4/47 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-21 18:17:46,859 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 51 transitions, 130 flow [2024-06-21 18:17:46,862 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 111 flow [2024-06-21 18:17:46,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 18:17:46,880 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;@61ec3965, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 18:17:46,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 18:17:46,895 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 18:17:46,896 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 18:17:46,896 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:17:46,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:17:46,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 18:17:46,897 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:17:46,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:17:46,918 INFO L85 PathProgramCache]: Analyzing trace with hash 379578807, now seen corresponding path program 1 times [2024-06-21 18:17:46,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:17:46,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742813505] [2024-06-21 18:17:46,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:17:46,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:17:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:17:47,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:17:47,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:17:47,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742813505] [2024-06-21 18:17:47,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742813505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:17:47,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:17:47,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 18:17:47,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075405565] [2024-06-21 18:17:47,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:17:47,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 18:17:47,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:17:47,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 18:17:47,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 18:17:47,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-06-21 18:17:47,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:17:47,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:17:47,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-06-21 18:17:47,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:17:48,339 INFO L124 PetriNetUnfolderBase]: 2073/3107 cut-off events. [2024-06-21 18:17:48,339 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2024-06-21 18:17:48,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5853 conditions, 3107 events. 2073/3107 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 15714 event pairs, 219 based on Foata normal form. 16/2954 useless extension candidates. Maximal degree in co-relation 5291. Up to 2380 conditions per place. [2024-06-21 18:17:48,397 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 37 selfloop transitions, 5 changer transitions 6/66 dead transitions. [2024-06-21 18:17:48,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 66 transitions, 267 flow [2024-06-21 18:17:48,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 18:17:48,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 18:17:48,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2024-06-21 18:17:48,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7712418300653595 [2024-06-21 18:17:48,419 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 111 flow. Second operand 3 states and 118 transitions. [2024-06-21 18:17:48,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 66 transitions, 267 flow [2024-06-21 18:17:48,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 66 transitions, 243 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-21 18:17:48,433 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 128 flow [2024-06-21 18:17:48,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-06-21 18:17:48,451 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2024-06-21 18:17:48,451 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 128 flow [2024-06-21 18:17:48,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:17:48,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:17:48,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:17:48,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 18:17:48,452 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:17:48,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:17:48,454 INFO L85 PathProgramCache]: Analyzing trace with hash -737100480, now seen corresponding path program 1 times [2024-06-21 18:17:48,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:17:48,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239537558] [2024-06-21 18:17:48,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:17:48,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:17:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:17:48,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:17:48,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:17:48,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239537558] [2024-06-21 18:17:48,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239537558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:17:48,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:17:48,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 18:17:48,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15905110] [2024-06-21 18:17:48,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:17:48,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 18:17:48,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:17:48,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 18:17:48,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 18:17:48,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-06-21 18:17:48,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 128 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) [2024-06-21 18:17:48,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:17:48,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-06-21 18:17:48,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:17:49,422 INFO L124 PetriNetUnfolderBase]: 2117/3196 cut-off events. [2024-06-21 18:17:49,422 INFO L125 PetriNetUnfolderBase]: For 616/796 co-relation queries the response was YES. [2024-06-21 18:17:49,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7303 conditions, 3196 events. 2117/3196 cut-off events. For 616/796 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 16739 event pairs, 159 based on Foata normal form. 30/3093 useless extension candidates. Maximal degree in co-relation 1921. Up to 2266 conditions per place. [2024-06-21 18:17:49,467 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 51 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2024-06-21 18:17:49,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 78 transitions, 328 flow [2024-06-21 18:17:49,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 18:17:49,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 18:17:49,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-06-21 18:17:49,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7450980392156863 [2024-06-21 18:17:49,474 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 128 flow. Second operand 4 states and 152 transitions. [2024-06-21 18:17:49,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 78 transitions, 328 flow [2024-06-21 18:17:49,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 78 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 18:17:49,486 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 178 flow [2024-06-21 18:17:49,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2024-06-21 18:17:49,487 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2024-06-21 18:17:49,488 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 178 flow [2024-06-21 18:17:49,489 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) [2024-06-21 18:17:49,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:17:49,490 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:17:49,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 18:17:49,491 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:17:49,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:17:49,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1208325204, now seen corresponding path program 1 times [2024-06-21 18:17:49,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:17:49,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814176283] [2024-06-21 18:17:49,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:17:49,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:17:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:17:49,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:17:49,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:17:49,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814176283] [2024-06-21 18:17:49,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814176283] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-21 18:17:49,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473279485] [2024-06-21 18:17:49,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:17:49,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-21 18:17:49,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 18:17:49,960 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-21 18:17:50,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-21 18:17:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:17:50,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-21 18:17:50,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-21 18:17:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:17:50,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-21 18:17:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:17:51,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473279485] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-21 18:17:51,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-21 18:17:51,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-06-21 18:17:51,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144028401] [2024-06-21 18:17:51,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-21 18:17:51,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:17:51,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:17:51,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:17:51,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:17:51,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-06-21 18:17:51,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 178 flow. Second operand has 11 states, 11 states have (on average 23.636363636363637) internal successors, (260), 11 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:17:51,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:17:51,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-06-21 18:17:51,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:17:54,228 INFO L124 PetriNetUnfolderBase]: 10043/14780 cut-off events. [2024-06-21 18:17:54,229 INFO L125 PetriNetUnfolderBase]: For 10603/11199 co-relation queries the response was YES. [2024-06-21 18:17:54,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39379 conditions, 14780 events. 10043/14780 cut-off events. For 10603/11199 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 95605 event pairs, 380 based on Foata normal form. 454/14995 useless extension candidates. Maximal degree in co-relation 16606. Up to 5742 conditions per place. [2024-06-21 18:17:54,424 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 148 selfloop transitions, 49 changer transitions 0/215 dead transitions. [2024-06-21 18:17:54,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 215 transitions, 1119 flow [2024-06-21 18:17:54,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:17:54,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:17:54,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 476 transitions. [2024-06-21 18:17:54,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-06-21 18:17:54,427 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 178 flow. Second operand 12 states and 476 transitions. [2024-06-21 18:17:54,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 215 transitions, 1119 flow [2024-06-21 18:17:54,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 215 transitions, 1098 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-21 18:17:54,446 INFO L231 Difference]: Finished difference. Result has 66 places, 90 transitions, 617 flow [2024-06-21 18:17:54,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=617, PETRI_PLACES=66, PETRI_TRANSITIONS=90} [2024-06-21 18:17:54,448 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2024-06-21 18:17:54,448 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 90 transitions, 617 flow [2024-06-21 18:17:54,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.636363636363637) internal successors, (260), 11 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:17:54,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:17:54,448 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:17:54,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-21 18:17:54,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-21 18:17:54,660 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:17:54,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:17:54,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1359423132, now seen corresponding path program 1 times [2024-06-21 18:17:54,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:17:54,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597107327] [2024-06-21 18:17:54,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:17:54,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:17:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:17:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:17:55,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:17:55,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597107327] [2024-06-21 18:17:55,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597107327] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-21 18:17:55,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73960419] [2024-06-21 18:17:55,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:17:55,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-21 18:17:55,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 18:17:55,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-21 18:17:55,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-21 18:17:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:17:55,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-21 18:17:55,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-21 18:17:55,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:17:55,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-21 18:17:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:17:56,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73960419] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-21 18:17:56,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-21 18:17:56,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 4] total 13 [2024-06-21 18:17:56,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146209433] [2024-06-21 18:17:56,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-21 18:17:56,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 18:17:56,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:17:56,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 18:17:56,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-06-21 18:17:56,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-21 18:17:56,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 90 transitions, 617 flow. Second operand has 15 states, 15 states have (on average 20.4) internal successors, (306), 15 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:17:56,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:17:56,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-21 18:17:56,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:18:11,939 INFO L124 PetriNetUnfolderBase]: 96251/134239 cut-off events. [2024-06-21 18:18:11,939 INFO L125 PetriNetUnfolderBase]: For 370111/377771 co-relation queries the response was YES. [2024-06-21 18:18:12,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427117 conditions, 134239 events. 96251/134239 cut-off events. For 370111/377771 co-relation queries the response was YES. Maximal size of possible extension queue 7026. Compared 1027704 event pairs, 4094 based on Foata normal form. 3064/130227 useless extension candidates. Maximal degree in co-relation 292324. Up to 46263 conditions per place. [2024-06-21 18:18:12,878 INFO L140 encePairwiseOnDemand]: 34/51 looper letters, 290 selfloop transitions, 407 changer transitions 65/775 dead transitions. [2024-06-21 18:18:12,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 775 transitions, 6314 flow [2024-06-21 18:18:12,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-06-21 18:18:12,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-06-21 18:18:12,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 938 transitions. [2024-06-21 18:18:12,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-06-21 18:18:12,881 INFO L175 Difference]: Start difference. First operand has 66 places, 90 transitions, 617 flow. Second operand 28 states and 938 transitions. [2024-06-21 18:18:12,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 775 transitions, 6314 flow [2024-06-21 18:18:15,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 775 transitions, 5518 flow, removed 398 selfloop flow, removed 0 redundant places. [2024-06-21 18:18:15,983 INFO L231 Difference]: Finished difference. Result has 101 places, 472 transitions, 4463 flow [2024-06-21 18:18:15,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4463, PETRI_PLACES=101, PETRI_TRANSITIONS=472} [2024-06-21 18:18:15,984 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 47 predicate places. [2024-06-21 18:18:15,984 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 472 transitions, 4463 flow [2024-06-21 18:18:15,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.4) internal successors, (306), 15 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:18:15,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:18:15,985 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:18:15,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-06-21 18:18:16,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-06-21 18:18:16,196 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:18:16,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:18:16,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1730557247, now seen corresponding path program 1 times [2024-06-21 18:18:16,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:18:16,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274266652] [2024-06-21 18:18:16,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:18:16,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:18:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:18:17,227 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 18:18:17,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:18:17,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274266652] [2024-06-21 18:18:17,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274266652] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-21 18:18:17,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216737048] [2024-06-21 18:18:17,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:18:17,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-21 18:18:17,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 18:18:17,493 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-21 18:18:17,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-21 18:18:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:18:17,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2024-06-21 18:18:17,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-21 18:18:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:18:17,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-21 18:18:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:18:20,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216737048] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-21 18:18:20,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-21 18:18:20,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 17 [2024-06-21 18:18:20,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853489100] [2024-06-21 18:18:20,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-21 18:18:20,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-06-21 18:18:20,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:18:20,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-06-21 18:18:20,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-06-21 18:18:20,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-21 18:18:20,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 472 transitions, 4463 flow. Second operand has 19 states, 19 states have (on average 20.05263157894737) internal successors, (381), 19 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:18:20,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:18:20,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-21 18:18:20,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand