./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/14_spin2003-pthread.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/14_spin2003-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ab2e0ac4 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-ext/14_spin2003-pthread.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/14_spin2003-pthread.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-ab2e0ac-m [2024-01-29 14:12:05,521 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 14:12:05,582 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 14:12:05,586 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 14:12:05,587 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 14:12:05,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 14:12:05,612 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 14:12:05,613 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 14:12:05,613 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 14:12:05,616 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 14:12:05,616 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 14:12:05,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 14:12:05,617 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 14:12:05,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 14:12:05,618 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 14:12:05,619 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 14:12:05,619 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 14:12:05,619 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 14:12:05,619 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 14:12:05,619 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 14:12:05,620 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 14:12:05,620 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 14:12:05,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 14:12:05,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 14:12:05,621 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 14:12:05,621 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 14:12:05,621 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 14:12:05,621 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 14:12:05,622 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 14:12:05,622 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 14:12:05,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 14:12:05,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 14:12:05,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:12:05,623 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 14:12:05,623 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 14:12:05,624 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 14:12:05,624 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 14:12:05,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 14:12:05,624 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 14:12:05,624 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 14:12:05,624 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 14:12:05,625 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 14:12:05,625 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 14:12:05,625 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 14:12:05,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 14:12:05,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 14:12:05,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 14:12:05,855 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 14:12:05,856 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 14:12:05,856 INFO L431 ainManager$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/14_spin2003-pthread.yml/witness.yml [2024-01-29 14:12:05,993 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 14:12:05,993 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 14:12:05,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/14_spin2003-pthread.i [2024-01-29 14:12:07,177 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 14:12:07,359 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 14:12:07,360 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/14_spin2003-pthread.i [2024-01-29 14:12:07,398 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c494adb8c/e15f260c02ca42a28b1851035a332aaf/FLAG160b3b5c3 [2024-01-29 14:12:07,408 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c494adb8c/e15f260c02ca42a28b1851035a332aaf [2024-01-29 14:12:07,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 14:12:07,410 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 14:12:07,411 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 14:12:07,411 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 14:12:07,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 14:12:07,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:12:05" (1/2) ... [2024-01-29 14:12:07,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df57dd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:12:07, skipping insertion in model container [2024-01-29 14:12:07,416 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:12:05" (1/2) ... [2024-01-29 14:12:07,416 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@30d17744 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:12:07, skipping insertion in model container [2024-01-29 14:12:07,417 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:12:07" (2/2) ... [2024-01-29 14:12:07,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df57dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:12:07, skipping insertion in model container [2024-01-29 14:12:07,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:12:07" (2/2) ... [2024-01-29 14:12:07,417 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 14:12:07,436 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 14:12:07,437 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] x == 1 [2024-01-29 14:12:07,437 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] (unsigned long )arg == 0UL [2024-01-29 14:12:07,437 INFO L98 nessWitnessExtractor]: Location invariant before [L689-L689] x == 1 [2024-01-29 14:12:07,437 INFO L98 nessWitnessExtractor]: Location invariant before [L689-L689] (unsigned long )arg == 0UL [2024-01-29 14:12:07,438 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] x == 1 [2024-01-29 14:12:07,438 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] (unsigned long )arg == 0UL [2024-01-29 14:12:07,438 INFO L98 nessWitnessExtractor]: Location invariant before [L688-L688] (unsigned long )arg == 0UL [2024-01-29 14:12:07,438 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-29 14:12:07,438 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] x == 0 [2024-01-29 14:12:07,438 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (unsigned long )arg == 0UL [2024-01-29 14:12:07,438 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] x == 1 [2024-01-29 14:12:07,438 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] (unsigned long )arg == 0UL [2024-01-29 14:12:07,465 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 14:12:07,710 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/14_spin2003-pthread.i[30427,30440] [2024-01-29 14:12:07,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:12:07,727 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 14:12:07,802 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/14_spin2003-pthread.i[30427,30440] Start Parsing Local Start Parsing Local [2024-01-29 14:12:07,805 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 14:12:07,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:12:07,834 INFO L206 MainTranslator]: Completed translation [2024-01-29 14:12:07,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:12:07 WrapperNode [2024-01-29 14:12:07,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 14:12:07,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 14:12:07,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 14:12:07,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 14:12:07,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:12:07" (1/1) ... [2024-01-29 14:12:07,871 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:12:07" (1/1) ... [2024-01-29 14:12:07,884 INFO L138 Inliner]: procedures = 162, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2024-01-29 14:12:07,885 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 14:12:07,886 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 14:12:07,886 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 14:12:07,886 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 14:12:07,894 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:12:07" (1/1) ... [2024-01-29 14:12:07,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:12:07" (1/1) ... [2024-01-29 14:12:07,896 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:12:07" (1/1) ... [2024-01-29 14:12:07,906 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 1, 5]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 1 writes are split as follows [0, 1, 0]. [2024-01-29 14:12:07,907 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:12:07" (1/1) ... [2024-01-29 14:12:07,907 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:12:07" (1/1) ... [2024-01-29 14:12:07,911 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:12:07" (1/1) ... [2024-01-29 14:12:07,914 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:12:07" (1/1) ... [2024-01-29 14:12:07,915 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:12:07" (1/1) ... [2024-01-29 14:12:07,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:12:07" (1/1) ... [2024-01-29 14:12:07,918 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 14:12:07,918 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 14:12:07,918 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 14:12:07,918 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 14:12:07,919 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:12:07" (1/1) ... [2024-01-29 14:12:07,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:12:07,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:12:07,942 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) [2024-01-29 14:12:07,951 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 [2024-01-29 14:12:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-29 14:12:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-29 14:12:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 14:12:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 14:12:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 14:12:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-29 14:12:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 14:12:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 14:12:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 14:12:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 14:12:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 14:12:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 14:12:07,973 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-29 14:12:07,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 14:12:07,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 14:12:07,974 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-29 14:12:08,097 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 14:12:08,099 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 14:12:08,309 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 14:12:08,309 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 14:12:08,384 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 14:12:08,385 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-01-29 14:12:08,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:12:08 BoogieIcfgContainer [2024-01-29 14:12:08,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 14:12:08,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 14:12:08,389 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 14:12:08,391 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 14:12:08,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:12:05" (1/4) ... [2024-01-29 14:12:08,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc0af94 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 02:12:08, skipping insertion in model container [2024-01-29 14:12:08,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 02:12:07" (2/4) ... [2024-01-29 14:12:08,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc0af94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 02:12:08, skipping insertion in model container [2024-01-29 14:12:08,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:12:07" (3/4) ... [2024-01-29 14:12:08,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc0af94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 02:12:08, skipping insertion in model container [2024-01-29 14:12:08,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:12:08" (4/4) ... [2024-01-29 14:12:08,394 INFO L112 eAbstractionObserver]: Analyzing ICFG 14_spin2003-pthread.i [2024-01-29 14:12:08,408 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 14:12:08,408 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2024-01-29 14:12:08,408 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 14:12:08,466 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 14:12:08,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 72 flow [2024-01-29 14:12:08,521 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-01-29 14:12:08,521 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:12:08,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-01-29 14:12:08,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 34 transitions, 72 flow [2024-01-29 14:12:08,527 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 34 transitions, 72 flow [2024-01-29 14:12:08,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 14:12:08,544 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;@7a7610e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 14:12:08,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-01-29 14:12:08,553 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 14:12:08,553 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-01-29 14:12:08,553 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:12:08,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:12:08,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 14:12:08,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-01-29 14:12:08,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:12:08,565 INFO L85 PathProgramCache]: Analyzing trace with hash 169599198, now seen corresponding path program 1 times [2024-01-29 14:12:08,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:12:08,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17683190] [2024-01-29 14:12:08,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:12:08,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:12:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:12:08,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:12:08,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:12:08,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17683190] [2024-01-29 14:12:08,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17683190] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:12:08,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:12:08,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:12:08,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219633547] [2024-01-29 14:12:08,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:12:08,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:12:08,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:12:09,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:12:09,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:12:09,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 34 [2024-01-29 14:12:09,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:09,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:12:09,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 34 [2024-01-29 14:12:09,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:12:09,078 INFO L124 PetriNetUnfolderBase]: 6/55 cut-off events. [2024-01-29 14:12:09,079 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:12:09,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 55 events. 6/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 12/61 useless extension candidates. Maximal degree in co-relation 70. Up to 18 conditions per place. [2024-01-29 14:12:09,080 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 9 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2024-01-29 14:12:09,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 82 flow [2024-01-29 14:12:09,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:12:09,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:12:09,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-01-29 14:12:09,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6544117647058824 [2024-01-29 14:12:09,091 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 72 flow. Second operand 4 states and 89 transitions. [2024-01-29 14:12:09,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 82 flow [2024-01-29 14:12:09,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 28 transitions, 82 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-29 14:12:09,095 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 60 flow [2024-01-29 14:12:09,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-01-29 14:12:09,099 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2024-01-29 14:12:09,099 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 60 flow [2024-01-29 14:12:09,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:09,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:12:09,099 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-01-29 14:12:09,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 14:12:09,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-01-29 14:12:09,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:12:09,100 INFO L85 PathProgramCache]: Analyzing trace with hash 169598854, now seen corresponding path program 1 times [2024-01-29 14:12:09,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:12:09,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628029464] [2024-01-29 14:12:09,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:12:09,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:12:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 14:12:09,113 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 14:12:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 14:12:09,132 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 14:12:09,133 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 14:12:09,134 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-01-29 14:12:09,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 23 remaining) [2024-01-29 14:12:09,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 23 remaining) [2024-01-29 14:12:09,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 23 remaining) [2024-01-29 14:12:09,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 23 remaining) [2024-01-29 14:12:09,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 23 remaining) [2024-01-29 14:12:09,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 23 remaining) [2024-01-29 14:12:09,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 23 remaining) [2024-01-29 14:12:09,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (14 of 23 remaining) [2024-01-29 14:12:09,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 23 remaining) [2024-01-29 14:12:09,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 23 remaining) [2024-01-29 14:12:09,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 23 remaining) [2024-01-29 14:12:09,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 23 remaining) [2024-01-29 14:12:09,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 23 remaining) [2024-01-29 14:12:09,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 23 remaining) [2024-01-29 14:12:09,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 23 remaining) [2024-01-29 14:12:09,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 23 remaining) [2024-01-29 14:12:09,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 23 remaining) [2024-01-29 14:12:09,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 23 remaining) [2024-01-29 14:12:09,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (3 of 23 remaining) [2024-01-29 14:12:09,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 23 remaining) [2024-01-29 14:12:09,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 23 remaining) [2024-01-29 14:12:09,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 23 remaining) [2024-01-29 14:12:09,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 14:12:09,142 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-01-29 14:12:09,144 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-29 14:12:09,144 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-29 14:12:09,163 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 14:12:09,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 64 transitions, 138 flow [2024-01-29 14:12:09,176 INFO L124 PetriNetUnfolderBase]: 2/68 cut-off events. [2024-01-29 14:12:09,176 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 14:12:09,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 2/68 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 60. Up to 3 conditions per place. [2024-01-29 14:12:09,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 64 transitions, 138 flow [2024-01-29 14:12:09,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 64 transitions, 138 flow [2024-01-29 14:12:09,180 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 14:12:09,181 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;@7a7610e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 14:12:09,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2024-01-29 14:12:09,183 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 14:12:09,183 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-01-29 14:12:09,183 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-29 14:12:09,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:12:09,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 14:12:09,184 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-29 14:12:09,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:12:09,184 INFO L85 PathProgramCache]: Analyzing trace with hash 230703515, now seen corresponding path program 1 times [2024-01-29 14:12:09,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:12:09,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398274894] [2024-01-29 14:12:09,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:12:09,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:12:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:12:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:12:09,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:12:09,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398274894] [2024-01-29 14:12:09,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398274894] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:12:09,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:12:09,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:12:09,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412518402] [2024-01-29 14:12:09,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:12:09,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:12:09,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:12:09,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:12:09,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:12:09,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 64 [2024-01-29 14:12:09,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:09,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:12:09,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 64 [2024-01-29 14:12:09,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:12:09,460 INFO L124 PetriNetUnfolderBase]: 113/546 cut-off events. [2024-01-29 14:12:09,471 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-01-29 14:12:09,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 546 events. 113/546 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3434 event pairs, 55 based on Foata normal form. 93/527 useless extension candidates. Maximal degree in co-relation 663. Up to 192 conditions per place. [2024-01-29 14:12:09,512 INFO L140 encePairwiseOnDemand]: 53/64 looper letters, 21 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-01-29 14:12:09,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 187 flow [2024-01-29 14:12:09,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:12:09,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:12:09,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-01-29 14:12:09,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.76171875 [2024-01-29 14:12:09,530 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 138 flow. Second operand 4 states and 195 transitions. [2024-01-29 14:12:09,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 187 flow [2024-01-29 14:12:09,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 187 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-29 14:12:09,534 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 124 flow [2024-01-29 14:12:09,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-01-29 14:12:09,537 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -4 predicate places. [2024-01-29 14:12:09,537 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 124 flow [2024-01-29 14:12:09,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:09,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:12:09,537 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2024-01-29 14:12:09,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 14:12:09,538 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-29 14:12:09,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:12:09,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1633407544, now seen corresponding path program 1 times [2024-01-29 14:12:09,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:12:09,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770129594] [2024-01-29 14:12:09,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:12:09,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:12:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 14:12:09,562 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 14:12:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 14:12:09,573 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 14:12:09,575 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 14:12:09,575 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 34 remaining) [2024-01-29 14:12:09,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 34 remaining) [2024-01-29 14:12:09,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 34 remaining) [2024-01-29 14:12:09,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 34 remaining) [2024-01-29 14:12:09,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 34 remaining) [2024-01-29 14:12:09,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 34 remaining) [2024-01-29 14:12:09,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 34 remaining) [2024-01-29 14:12:09,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 34 remaining) [2024-01-29 14:12:09,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (25 of 34 remaining) [2024-01-29 14:12:09,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 34 remaining) [2024-01-29 14:12:09,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 34 remaining) [2024-01-29 14:12:09,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 34 remaining) [2024-01-29 14:12:09,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 34 remaining) [2024-01-29 14:12:09,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 34 remaining) [2024-01-29 14:12:09,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 34 remaining) [2024-01-29 14:12:09,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 34 remaining) [2024-01-29 14:12:09,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 34 remaining) [2024-01-29 14:12:09,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 34 remaining) [2024-01-29 14:12:09,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 34 remaining) [2024-01-29 14:12:09,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (14 of 34 remaining) [2024-01-29 14:12:09,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 34 remaining) [2024-01-29 14:12:09,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 34 remaining) [2024-01-29 14:12:09,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 34 remaining) [2024-01-29 14:12:09,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 34 remaining) [2024-01-29 14:12:09,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 34 remaining) [2024-01-29 14:12:09,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 34 remaining) [2024-01-29 14:12:09,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 34 remaining) [2024-01-29 14:12:09,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 34 remaining) [2024-01-29 14:12:09,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 34 remaining) [2024-01-29 14:12:09,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 34 remaining) [2024-01-29 14:12:09,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (3 of 34 remaining) [2024-01-29 14:12:09,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 34 remaining) [2024-01-29 14:12:09,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 34 remaining) [2024-01-29 14:12:09,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 34 remaining) [2024-01-29 14:12:09,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 14:12:09,586 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-01-29 14:12:09,587 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-29 14:12:09,587 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-29 14:12:09,620 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 14:12:09,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 94 transitions, 206 flow [2024-01-29 14:12:09,633 INFO L124 PetriNetUnfolderBase]: 3/100 cut-off events. [2024-01-29 14:12:09,635 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-29 14:12:09,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 100 events. 3/100 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 338 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2024-01-29 14:12:09,637 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 94 transitions, 206 flow [2024-01-29 14:12:09,638 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 94 transitions, 206 flow [2024-01-29 14:12:09,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 14:12:09,641 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;@7a7610e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 14:12:09,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2024-01-29 14:12:09,643 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 14:12:09,645 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-01-29 14:12:09,645 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-29 14:12:09,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:12:09,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 14:12:09,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 42 more)] === [2024-01-29 14:12:09,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:12:09,650 INFO L85 PathProgramCache]: Analyzing trace with hash 320436054, now seen corresponding path program 1 times [2024-01-29 14:12:09,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:12:09,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457239664] [2024-01-29 14:12:09,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:12:09,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:12:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:12:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:12:09,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:12:09,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457239664] [2024-01-29 14:12:09,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457239664] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:12:09,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:12:09,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:12:09,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132368691] [2024-01-29 14:12:09,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:12:09,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:12:09,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:12:09,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:12:09,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:12:09,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2024-01-29 14:12:09,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:09,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:12:09,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2024-01-29 14:12:09,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:12:10,179 INFO L124 PetriNetUnfolderBase]: 1175/3992 cut-off events. [2024-01-29 14:12:10,180 INFO L125 PetriNetUnfolderBase]: For 361/361 co-relation queries the response was YES. [2024-01-29 14:12:10,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5967 conditions, 3992 events. 1175/3992 cut-off events. For 361/361 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 37781 event pairs, 795 based on Foata normal form. 665/3851 useless extension candidates. Maximal degree in co-relation 4410. Up to 1596 conditions per place. [2024-01-29 14:12:10,204 INFO L140 encePairwiseOnDemand]: 82/94 looper letters, 33 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2024-01-29 14:12:10,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 98 transitions, 296 flow [2024-01-29 14:12:10,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:12:10,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:12:10,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 301 transitions. [2024-01-29 14:12:10,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.800531914893617 [2024-01-29 14:12:10,208 INFO L175 Difference]: Start difference. First operand has 98 places, 94 transitions, 206 flow. Second operand 4 states and 301 transitions. [2024-01-29 14:12:10,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 98 transitions, 296 flow [2024-01-29 14:12:10,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 98 transitions, 292 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-29 14:12:10,211 INFO L231 Difference]: Finished difference. Result has 94 places, 84 transitions, 188 flow [2024-01-29 14:12:10,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=94, PETRI_TRANSITIONS=84} [2024-01-29 14:12:10,213 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -4 predicate places. [2024-01-29 14:12:10,213 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 84 transitions, 188 flow [2024-01-29 14:12:10,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:10,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:12:10,213 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-01-29 14:12:10,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 14:12:10,214 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 42 more)] === [2024-01-29 14:12:10,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:12:10,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1299750437, now seen corresponding path program 1 times [2024-01-29 14:12:10,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:12:10,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817917267] [2024-01-29 14:12:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:12:10,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:12:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:12:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-29 14:12:10,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:12:10,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817917267] [2024-01-29 14:12:10,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817917267] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:12:10,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:12:10,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:12:10,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092831123] [2024-01-29 14:12:10,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:12:10,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:12:10,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:12:10,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:12:10,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:12:10,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2024-01-29 14:12:10,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 84 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:10,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:12:10,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2024-01-29 14:12:10,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:12:10,666 INFO L124 PetriNetUnfolderBase]: 1173/3612 cut-off events. [2024-01-29 14:12:10,666 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2024-01-29 14:12:10,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5541 conditions, 3612 events. 1173/3612 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 32414 event pairs, 720 based on Foata normal form. 412/3441 useless extension candidates. Maximal degree in co-relation 5524. Up to 1572 conditions per place. [2024-01-29 14:12:10,686 INFO L140 encePairwiseOnDemand]: 86/94 looper letters, 37 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-01-29 14:12:10,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 96 transitions, 295 flow [2024-01-29 14:12:10,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:12:10,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:12:10,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2024-01-29 14:12:10,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7898936170212766 [2024-01-29 14:12:10,688 INFO L175 Difference]: Start difference. First operand has 94 places, 84 transitions, 188 flow. Second operand 4 states and 297 transitions. [2024-01-29 14:12:10,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 96 transitions, 295 flow [2024-01-29 14:12:10,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 96 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:12:10,690 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 177 flow [2024-01-29 14:12:10,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2024-01-29 14:12:10,691 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -9 predicate places. [2024-01-29 14:12:10,691 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 177 flow [2024-01-29 14:12:10,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:10,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:12:10,691 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2024-01-29 14:12:10,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 14:12:10,691 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 42 more)] === [2024-01-29 14:12:10,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:12:10,692 INFO L85 PathProgramCache]: Analyzing trace with hash 773267171, now seen corresponding path program 1 times [2024-01-29 14:12:10,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:12:10,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132634560] [2024-01-29 14:12:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:12:10,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:12:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 14:12:10,700 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 14:12:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 14:12:10,707 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 14:12:10,707 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 14:12:10,707 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (44 of 45 remaining) [2024-01-29 14:12:10,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 45 remaining) [2024-01-29 14:12:10,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 45 remaining) [2024-01-29 14:12:10,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 45 remaining) [2024-01-29 14:12:10,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 45 remaining) [2024-01-29 14:12:10,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 45 remaining) [2024-01-29 14:12:10,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 45 remaining) [2024-01-29 14:12:10,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 45 remaining) [2024-01-29 14:12:10,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (36 of 45 remaining) [2024-01-29 14:12:10,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 45 remaining) [2024-01-29 14:12:10,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 45 remaining) [2024-01-29 14:12:10,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 45 remaining) [2024-01-29 14:12:10,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 45 remaining) [2024-01-29 14:12:10,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 45 remaining) [2024-01-29 14:12:10,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 45 remaining) [2024-01-29 14:12:10,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 45 remaining) [2024-01-29 14:12:10,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 45 remaining) [2024-01-29 14:12:10,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 45 remaining) [2024-01-29 14:12:10,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 45 remaining) [2024-01-29 14:12:10,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (25 of 45 remaining) [2024-01-29 14:12:10,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 45 remaining) [2024-01-29 14:12:10,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 45 remaining) [2024-01-29 14:12:10,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 45 remaining) [2024-01-29 14:12:10,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 45 remaining) [2024-01-29 14:12:10,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 45 remaining) [2024-01-29 14:12:10,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 45 remaining) [2024-01-29 14:12:10,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 45 remaining) [2024-01-29 14:12:10,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 45 remaining) [2024-01-29 14:12:10,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 45 remaining) [2024-01-29 14:12:10,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 45 remaining) [2024-01-29 14:12:10,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (14 of 45 remaining) [2024-01-29 14:12:10,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 45 remaining) [2024-01-29 14:12:10,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 45 remaining) [2024-01-29 14:12:10,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 45 remaining) [2024-01-29 14:12:10,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 45 remaining) [2024-01-29 14:12:10,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 45 remaining) [2024-01-29 14:12:10,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 45 remaining) [2024-01-29 14:12:10,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 45 remaining) [2024-01-29 14:12:10,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 45 remaining) [2024-01-29 14:12:10,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 45 remaining) [2024-01-29 14:12:10,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 45 remaining) [2024-01-29 14:12:10,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (3 of 45 remaining) [2024-01-29 14:12:10,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 45 remaining) [2024-01-29 14:12:10,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 45 remaining) [2024-01-29 14:12:10,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 45 remaining) [2024-01-29 14:12:10,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-29 14:12:10,711 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-01-29 14:12:10,712 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-29 14:12:10,712 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-01-29 14:12:10,730 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 14:12:10,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 124 transitions, 276 flow [2024-01-29 14:12:10,740 INFO L124 PetriNetUnfolderBase]: 4/132 cut-off events. [2024-01-29 14:12:10,740 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-01-29 14:12:10,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 132 events. 4/132 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 522 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 118. Up to 5 conditions per place. [2024-01-29 14:12:10,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 124 transitions, 276 flow [2024-01-29 14:12:10,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 124 transitions, 276 flow [2024-01-29 14:12:10,742 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 14:12:10,742 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;@7a7610e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 14:12:10,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2024-01-29 14:12:10,743 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 14:12:10,743 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-01-29 14:12:10,743 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-29 14:12:10,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:12:10,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 14:12:10,743 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-29 14:12:10,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:12:10,744 INFO L85 PathProgramCache]: Analyzing trace with hash 438798671, now seen corresponding path program 1 times [2024-01-29 14:12:10,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:12:10,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768568247] [2024-01-29 14:12:10,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:12:10,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:12:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:12:10,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:12:10,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:12:10,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768568247] [2024-01-29 14:12:10,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768568247] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:12:10,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:12:10,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:12:10,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521463718] [2024-01-29 14:12:10,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:12:10,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:12:10,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:12:10,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:12:10,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:12:10,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2024-01-29 14:12:10,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 124 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:10,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:12:10,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2024-01-29 14:12:10,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:12:13,010 INFO L124 PetriNetUnfolderBase]: 10067/27268 cut-off events. [2024-01-29 14:12:13,011 INFO L125 PetriNetUnfolderBase]: For 3925/3925 co-relation queries the response was YES. [2024-01-29 14:12:13,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42420 conditions, 27268 events. 10067/27268 cut-off events. For 3925/3925 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 321875 event pairs, 7745 based on Foata normal form. 4613/26854 useless extension candidates. Maximal degree in co-relation 30357. Up to 12180 conditions per place. [2024-01-29 14:12:13,183 INFO L140 encePairwiseOnDemand]: 111/124 looper letters, 45 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-01-29 14:12:13,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 133 transitions, 409 flow [2024-01-29 14:12:13,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:12:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:12:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2024-01-29 14:12:13,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8205645161290323 [2024-01-29 14:12:13,185 INFO L175 Difference]: Start difference. First operand has 129 places, 124 transitions, 276 flow. Second operand 4 states and 407 transitions. [2024-01-29 14:12:13,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 133 transitions, 409 flow [2024-01-29 14:12:13,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 133 transitions, 397 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-01-29 14:12:13,192 INFO L231 Difference]: Finished difference. Result has 125 places, 113 transitions, 252 flow [2024-01-29 14:12:13,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=125, PETRI_TRANSITIONS=113} [2024-01-29 14:12:13,193 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -4 predicate places. [2024-01-29 14:12:13,193 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 113 transitions, 252 flow [2024-01-29 14:12:13,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:13,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:12:13,194 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-01-29 14:12:13,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-29 14:12:13,194 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-29 14:12:13,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:12:13,194 INFO L85 PathProgramCache]: Analyzing trace with hash 776715761, now seen corresponding path program 1 times [2024-01-29 14:12:13,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:12:13,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873917707] [2024-01-29 14:12:13,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:12:13,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:12:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:12:13,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-29 14:12:13,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:12:13,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873917707] [2024-01-29 14:12:13,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873917707] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:12:13,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:12:13,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:12:13,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538471837] [2024-01-29 14:12:13,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:12:13,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:12:13,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:12:13,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:12:13,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:12:13,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2024-01-29 14:12:13,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 113 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:13,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:12:13,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2024-01-29 14:12:13,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:12:15,031 INFO L124 PetriNetUnfolderBase]: 10065/23146 cut-off events. [2024-01-29 14:12:15,031 INFO L125 PetriNetUnfolderBase]: For 2101/2101 co-relation queries the response was YES. [2024-01-29 14:12:15,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37748 conditions, 23146 events. 10065/23146 cut-off events. For 2101/2101 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 247596 event pairs, 575 based on Foata normal form. 2580/23360 useless extension candidates. Maximal degree in co-relation 37730. Up to 12156 conditions per place. [2024-01-29 14:12:15,177 INFO L140 encePairwiseOnDemand]: 116/124 looper letters, 49 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2024-01-29 14:12:15,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 131 transitions, 400 flow [2024-01-29 14:12:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:12:15,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:12:15,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 401 transitions. [2024-01-29 14:12:15,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8084677419354839 [2024-01-29 14:12:15,180 INFO L175 Difference]: Start difference. First operand has 125 places, 113 transitions, 252 flow. Second operand 4 states and 401 transitions. [2024-01-29 14:12:15,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 131 transitions, 400 flow [2024-01-29 14:12:15,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 131 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:12:15,183 INFO L231 Difference]: Finished difference. Result has 120 places, 107 transitions, 241 flow [2024-01-29 14:12:15,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=120, PETRI_TRANSITIONS=107} [2024-01-29 14:12:15,184 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -9 predicate places. [2024-01-29 14:12:15,184 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 107 transitions, 241 flow [2024-01-29 14:12:15,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:15,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:12:15,185 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2024-01-29 14:12:15,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-29 14:12:15,185 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-29 14:12:15,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:12:15,185 INFO L85 PathProgramCache]: Analyzing trace with hash -903368876, now seen corresponding path program 1 times [2024-01-29 14:12:15,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:12:15,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787730576] [2024-01-29 14:12:15,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:12:15,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:12:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:12:15,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-29 14:12:15,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:12:15,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787730576] [2024-01-29 14:12:15,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787730576] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:12:15,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:12:15,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:12:15,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765488557] [2024-01-29 14:12:15,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:12:15,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:12:15,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:12:15,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:12:15,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:12:15,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2024-01-29 14:12:15,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 107 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:15,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:12:15,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2024-01-29 14:12:15,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:12:16,795 INFO L124 PetriNetUnfolderBase]: 10043/22884 cut-off events. [2024-01-29 14:12:16,796 INFO L125 PetriNetUnfolderBase]: For 2034/2034 co-relation queries the response was YES. [2024-01-29 14:12:16,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37445 conditions, 22884 events. 10043/22884 cut-off events. For 2034/2034 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 243658 event pairs, 275 based on Foata normal form. 2520/23146 useless extension candidates. Maximal degree in co-relation 37428. Up to 11952 conditions per place. [2024-01-29 14:12:16,959 INFO L140 encePairwiseOnDemand]: 116/124 looper letters, 53 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2024-01-29 14:12:16,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 129 transitions, 400 flow [2024-01-29 14:12:16,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:12:16,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:12:16,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 405 transitions. [2024-01-29 14:12:16,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8165322580645161 [2024-01-29 14:12:16,961 INFO L175 Difference]: Start difference. First operand has 120 places, 107 transitions, 241 flow. Second operand 4 states and 405 transitions. [2024-01-29 14:12:16,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 129 transitions, 400 flow [2024-01-29 14:12:16,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 129 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:12:16,964 INFO L231 Difference]: Finished difference. Result has 115 places, 101 transitions, 230 flow [2024-01-29 14:12:16,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=115, PETRI_TRANSITIONS=101} [2024-01-29 14:12:16,965 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -14 predicate places. [2024-01-29 14:12:16,965 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 101 transitions, 230 flow [2024-01-29 14:12:16,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:16,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:12:16,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:12:16,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-29 14:12:16,966 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-29 14:12:16,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:12:16,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1049229490, now seen corresponding path program 1 times [2024-01-29 14:12:16,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:12:16,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957230050] [2024-01-29 14:12:16,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:12:16,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:12:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:12:16,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:12:16,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:12:16,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957230050] [2024-01-29 14:12:16,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957230050] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:12:16,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:12:16,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:12:16,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491777457] [2024-01-29 14:12:16,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:12:16,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:12:16,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:12:16,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:12:16,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:12:17,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 124 [2024-01-29 14:12:17,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 101 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:17,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:12:17,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 124 [2024-01-29 14:12:17,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:12:31,727 INFO L124 PetriNetUnfolderBase]: 105961/205372 cut-off events. [2024-01-29 14:12:31,727 INFO L125 PetriNetUnfolderBase]: For 24981/24981 co-relation queries the response was YES. [2024-01-29 14:12:32,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370003 conditions, 205372 events. 105961/205372 cut-off events. For 24981/24981 co-relation queries the response was YES. Maximal size of possible extension queue 7662. Compared 2554148 event pairs, 79416 based on Foata normal form. 26408/213188 useless extension candidates. Maximal degree in co-relation 369986. Up to 113446 conditions per place. [2024-01-29 14:12:33,398 INFO L140 encePairwiseOnDemand]: 91/124 looper letters, 61 selfloop transitions, 17 changer transitions 0/129 dead transitions. [2024-01-29 14:12:33,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 129 transitions, 459 flow [2024-01-29 14:12:33,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:12:33,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:12:33,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2024-01-29 14:12:33,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8198924731182796 [2024-01-29 14:12:33,400 INFO L175 Difference]: Start difference. First operand has 115 places, 101 transitions, 230 flow. Second operand 3 states and 305 transitions. [2024-01-29 14:12:33,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 129 transitions, 459 flow [2024-01-29 14:12:33,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 129 transitions, 454 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:12:33,486 INFO L231 Difference]: Finished difference. Result has 117 places, 113 transitions, 375 flow [2024-01-29 14:12:33,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=375, PETRI_PLACES=117, PETRI_TRANSITIONS=113} [2024-01-29 14:12:33,487 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -12 predicate places. [2024-01-29 14:12:33,487 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 113 transitions, 375 flow [2024-01-29 14:12:33,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:33,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:12:33,488 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2024-01-29 14:12:33,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-29 14:12:33,488 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-29 14:12:33,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:12:33,488 INFO L85 PathProgramCache]: Analyzing trace with hash -554325609, now seen corresponding path program 1 times [2024-01-29 14:12:33,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:12:33,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102988488] [2024-01-29 14:12:33,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:12:33,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:12:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 14:12:33,504 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 14:12:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 14:12:33,518 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 14:12:33,518 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 14:12:33,518 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (55 of 56 remaining) [2024-01-29 14:12:33,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 56 remaining) [2024-01-29 14:12:33,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 56 remaining) [2024-01-29 14:12:33,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 56 remaining) [2024-01-29 14:12:33,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 56 remaining) [2024-01-29 14:12:33,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 56 remaining) [2024-01-29 14:12:33,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 56 remaining) [2024-01-29 14:12:33,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 56 remaining) [2024-01-29 14:12:33,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (47 of 56 remaining) [2024-01-29 14:12:33,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 56 remaining) [2024-01-29 14:12:33,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 56 remaining) [2024-01-29 14:12:33,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 56 remaining) [2024-01-29 14:12:33,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 56 remaining) [2024-01-29 14:12:33,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 56 remaining) [2024-01-29 14:12:33,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 56 remaining) [2024-01-29 14:12:33,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 56 remaining) [2024-01-29 14:12:33,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 56 remaining) [2024-01-29 14:12:33,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 56 remaining) [2024-01-29 14:12:33,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 56 remaining) [2024-01-29 14:12:33,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (36 of 56 remaining) [2024-01-29 14:12:33,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 56 remaining) [2024-01-29 14:12:33,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 56 remaining) [2024-01-29 14:12:33,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 56 remaining) [2024-01-29 14:12:33,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 56 remaining) [2024-01-29 14:12:33,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 56 remaining) [2024-01-29 14:12:33,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 56 remaining) [2024-01-29 14:12:33,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 56 remaining) [2024-01-29 14:12:33,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 56 remaining) [2024-01-29 14:12:33,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 56 remaining) [2024-01-29 14:12:33,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 56 remaining) [2024-01-29 14:12:33,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (25 of 56 remaining) [2024-01-29 14:12:33,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 56 remaining) [2024-01-29 14:12:33,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 56 remaining) [2024-01-29 14:12:33,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 56 remaining) [2024-01-29 14:12:33,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 56 remaining) [2024-01-29 14:12:33,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 56 remaining) [2024-01-29 14:12:33,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 56 remaining) [2024-01-29 14:12:33,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 56 remaining) [2024-01-29 14:12:33,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 56 remaining) [2024-01-29 14:12:33,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 56 remaining) [2024-01-29 14:12:33,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 56 remaining) [2024-01-29 14:12:33,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (14 of 56 remaining) [2024-01-29 14:12:33,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 56 remaining) [2024-01-29 14:12:33,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 56 remaining) [2024-01-29 14:12:33,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 56 remaining) [2024-01-29 14:12:33,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 56 remaining) [2024-01-29 14:12:33,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 56 remaining) [2024-01-29 14:12:33,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 56 remaining) [2024-01-29 14:12:33,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 56 remaining) [2024-01-29 14:12:33,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 56 remaining) [2024-01-29 14:12:33,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 56 remaining) [2024-01-29 14:12:33,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 56 remaining) [2024-01-29 14:12:33,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (3 of 56 remaining) [2024-01-29 14:12:33,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 56 remaining) [2024-01-29 14:12:33,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 56 remaining) [2024-01-29 14:12:33,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 56 remaining) [2024-01-29 14:12:33,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-29 14:12:33,526 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-01-29 14:12:33,527 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-29 14:12:33,527 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-01-29 14:12:33,550 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 14:12:33,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 154 transitions, 348 flow [2024-01-29 14:12:33,565 INFO L124 PetriNetUnfolderBase]: 5/164 cut-off events. [2024-01-29 14:12:33,566 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-01-29 14:12:33,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 164 events. 5/164 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 720 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 149. Up to 6 conditions per place. [2024-01-29 14:12:33,566 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 154 transitions, 348 flow [2024-01-29 14:12:33,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 154 transitions, 348 flow [2024-01-29 14:12:33,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 14:12:33,569 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;@7a7610e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 14:12:33,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2024-01-29 14:12:33,571 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 14:12:33,571 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-01-29 14:12:33,571 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-29 14:12:33,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:12:33,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 14:12:33,571 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 64 more)] === [2024-01-29 14:12:33,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:12:33,572 INFO L85 PathProgramCache]: Analyzing trace with hash 585788582, now seen corresponding path program 1 times [2024-01-29 14:12:33,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:12:33,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781014478] [2024-01-29 14:12:33,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:12:33,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:12:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:12:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:12:33,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:12:33,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781014478] [2024-01-29 14:12:33,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781014478] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:12:33,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:12:33,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:12:33,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489685412] [2024-01-29 14:12:33,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:12:33,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:12:33,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:12:33,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:12:33,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:12:33,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 154 [2024-01-29 14:12:33,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 154 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:33,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:12:33,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 154 [2024-01-29 14:12:33,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:12:48,129 INFO L124 PetriNetUnfolderBase]: 78539/157324 cut-off events. [2024-01-29 14:12:48,129 INFO L125 PetriNetUnfolderBase]: For 37189/37189 co-relation queries the response was YES. [2024-01-29 14:12:48,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268165 conditions, 157324 events. 78539/157324 cut-off events. For 37189/37189 co-relation queries the response was YES. Maximal size of possible extension queue 4668. Compared 1911439 event pairs, 8555 based on Foata normal form. 31544/174511 useless extension candidates. Maximal degree in co-relation 38627. Up to 88644 conditions per place. [2024-01-29 14:12:50,020 INFO L140 encePairwiseOnDemand]: 140/154 looper letters, 57 selfloop transitions, 2 changer transitions 0/168 dead transitions. [2024-01-29 14:12:50,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 168 transitions, 526 flow [2024-01-29 14:12:50,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:12:50,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:12:50,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 513 transitions. [2024-01-29 14:12:50,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8327922077922078 [2024-01-29 14:12:50,022 INFO L175 Difference]: Start difference. First operand has 160 places, 154 transitions, 348 flow. Second operand 4 states and 513 transitions. [2024-01-29 14:12:50,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 168 transitions, 526 flow [2024-01-29 14:12:50,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 168 transitions, 502 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-01-29 14:12:50,034 INFO L231 Difference]: Finished difference. Result has 156 places, 142 transitions, 316 flow [2024-01-29 14:12:50,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=316, PETRI_PLACES=156, PETRI_TRANSITIONS=142} [2024-01-29 14:12:50,035 INFO L281 CegarLoopForPetriNet]: 160 programPoint places, -4 predicate places. [2024-01-29 14:12:50,036 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 142 transitions, 316 flow [2024-01-29 14:12:50,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:50,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:12:50,036 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-01-29 14:12:50,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-29 14:12:50,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 64 more)] === [2024-01-29 14:12:50,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:12:50,037 INFO L85 PathProgramCache]: Analyzing trace with hash 301021285, now seen corresponding path program 1 times [2024-01-29 14:12:50,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:12:50,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119869981] [2024-01-29 14:12:50,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:12:50,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:12:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:12:50,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-29 14:12:50,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:12:50,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119869981] [2024-01-29 14:12:50,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119869981] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:12:50,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:12:50,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:12:50,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007760658] [2024-01-29 14:12:50,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:12:50,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:12:50,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:12:50,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:12:50,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:12:50,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 154 [2024-01-29 14:12:50,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 142 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:12:50,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:12:50,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 154 [2024-01-29 14:12:50,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand