./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_27-multiple-protecting2_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3d25acf6 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_27-multiple-protecting2_true.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-3d25acf-m [2024-01-30 14:21:30,145 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:21:30,211 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:21:30,217 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:21:30,217 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:21:30,242 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:21:30,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:21:30,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:21:30,245 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:21:30,249 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:21:30,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:21:30,249 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:21:30,250 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:21:30,252 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:21:30,252 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:21:30,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:21:30,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:21:30,252 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:21:30,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:21:30,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:21:30,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:21:30,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:21:30,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:21:30,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:21:30,254 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:21:30,254 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:21:30,255 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:21:30,255 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:21:30,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:21:30,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:21:30,256 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:21:30,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:21:30,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:21:30,257 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:21:30,257 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:21:30,257 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:21:30,257 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:21:30,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:21:30,258 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:21:30,258 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:21:30,258 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:21:30,258 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:21:30,259 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:21:30,259 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:21:30,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:21:30,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:21:30,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:21:30,510 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:21:30,511 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:21:30,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-01-30 14:21:31,635 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:21:31,822 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:21:31,822 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-01-30 14:21:31,844 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5674712fc/048cd9b72dc247229c7580b8902e1d48/FLAG20baf6820 [2024-01-30 14:21:31,854 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5674712fc/048cd9b72dc247229c7580b8902e1d48 [2024-01-30 14:21:31,856 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:21:31,857 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:21:31,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_27-multiple-protecting2_true.yml/witness.yml [2024-01-30 14:21:32,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:21:32,011 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:21:32,012 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:21:32,012 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:21:32,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:21:32,017 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:21:31" (1/2) ... [2024-01-30 14:21:32,019 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c2155a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:21:32, skipping insertion in model container [2024-01-30 14:21:32,019 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:21:31" (1/2) ... [2024-01-30 14:21:32,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b34fcc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:21:32, skipping insertion in model container [2024-01-30 14:21:32,021 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:21:32" (2/2) ... [2024-01-30 14:21:32,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c2155a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:32, skipping insertion in model container [2024-01-30 14:21:32,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:21:32" (2/2) ... [2024-01-30 14:21:32,022 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:21:32,096 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:21:32,097 INFO L98 nessWitnessExtractor]: Location invariant before [L714-L714] (g1 == 0) && (g2 == 0) [2024-01-30 14:21:32,097 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] (g1 == 0) && (g2 == 0) [2024-01-30 14:21:32,098 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (g1 == 0) && (g2 == 0) [2024-01-30 14:21:32,098 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (g1 == 0) && (g2 == 0) [2024-01-30 14:21:32,098 INFO L98 nessWitnessExtractor]: Location invariant before [L704-L704] (g2 == 0) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:32,098 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] ((g1 == 0) && (g2 == 1)) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:32,099 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] ((g1 == 0) && (g2 == 0)) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:32,099 INFO L98 nessWitnessExtractor]: Location invariant before [L716-L716] g1 == 0 [2024-01-30 14:21:32,099 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (g1 == 1) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:32,099 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] g1 == 0 [2024-01-30 14:21:32,099 INFO L98 nessWitnessExtractor]: Location invariant before [L701-L701] (g2 == 1) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:32,099 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] ((g1 == 0) && (g2 == 1)) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:32,099 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] (unsigned long )arg == 0UL [2024-01-30 14:21:32,100 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] (g1 == 0) && (g2 == 0) [2024-01-30 14:21:32,100 INFO L98 nessWitnessExtractor]: Location invariant before [L713-L713] g1 == 0 [2024-01-30 14:21:32,100 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] (g1 == 0) && (g2 == 0) [2024-01-30 14:21:32,100 INFO L98 nessWitnessExtractor]: Location invariant before [L715-L715] (g1 == 0) && (g2 == 0) [2024-01-30 14:21:32,100 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] (g1 == 0) && (g2 == 0) [2024-01-30 14:21:32,100 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (g1 == 0) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:32,100 INFO L98 nessWitnessExtractor]: Location invariant before [L703-L703] ((g1 == 0) && (g2 == 0)) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:32,100 INFO L98 nessWitnessExtractor]: Location invariant before [L688-L688] ((g1 == 0) && (g2 == 0)) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:32,101 INFO L98 nessWitnessExtractor]: Location invariant before [L705-L705] (unsigned long )arg == 0UL [2024-01-30 14:21:32,101 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L699] ((g1 == 0) && (g2 == 0)) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:32,101 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (g1 == 0) && (g2 == 0) [2024-01-30 14:21:32,101 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] (g1 == 0) && (g2 == 0) [2024-01-30 14:21:32,101 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] (g1 == 0) && (g2 == 0) [2024-01-30 14:21:32,102 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] g1 == 0 [2024-01-30 14:21:32,102 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] (g2 == 0) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:32,102 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] (unsigned long )arg == 0UL [2024-01-30 14:21:32,102 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] ((g1 == 1) && (g2 == 0)) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:32,102 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] (g1 == 0) && (g2 == 0) [2024-01-30 14:21:32,102 INFO L98 nessWitnessExtractor]: Location invariant before [L687-L687] (g1 == 0) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:32,102 INFO L98 nessWitnessExtractor]: Location invariant before [L689-L689] ((g1 == 1) && (g2 == 0)) && ((unsigned long )arg == 0UL) [2024-01-30 14:21:32,102 INFO L98 nessWitnessExtractor]: Location invariant before [L686-L686] (unsigned long )arg == 0UL [2024-01-30 14:21:32,103 INFO L98 nessWitnessExtractor]: Location invariant before [L19-L19] (((g1 == 0) && (g2 == 0)) && (g1 == 0)) && (g2 == 0) [2024-01-30 14:21:32,134 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:21:32,260 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2024-01-30 14:21:32,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:21:32,402 INFO L202 MainTranslator]: Completed pre-run [2024-01-30 14:21:32,413 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2024-01-30 14:21:32,414 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_assert(int cond) { if(!(cond)) { ERROR: {reach_error();abort();} } } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-30 14:21:32,524 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:21:32,551 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:21:32,551 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:32 WrapperNode [2024-01-30 14:21:32,551 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:21:32,552 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:21:32,552 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:21:32,552 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:21:32,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:32" (1/1) ... [2024-01-30 14:21:32,570 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:32" (1/1) ... [2024-01-30 14:21:32,589 INFO L138 Inliner]: procedures = 164, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 137 [2024-01-30 14:21:32,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:21:32,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:21:32,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:21:32,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:21:32,599 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:32" (1/1) ... [2024-01-30 14:21:32,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:32" (1/1) ... [2024-01-30 14:21:32,604 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:32" (1/1) ... [2024-01-30 14:21:32,618 INFO L175 MemorySlicer]: Split 21 memory accesses to 6 slices as follows [2, 2, 5, 5, 5, 2]. 24 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 5, 5, 5, 0]. The 2 writes are split as follows [0, 1, 0, 0, 0, 1]. [2024-01-30 14:21:32,618 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:32" (1/1) ... [2024-01-30 14:21:32,619 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:32" (1/1) ... [2024-01-30 14:21:32,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:32" (1/1) ... [2024-01-30 14:21:32,630 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:32" (1/1) ... [2024-01-30 14:21:32,631 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:32" (1/1) ... [2024-01-30 14:21:32,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:32" (1/1) ... [2024-01-30 14:21:32,635 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:21:32,636 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:21:32,636 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:21:32,636 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:21:32,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:32" (1/1) ... [2024-01-30 14:21:32,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:21:32,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:21:32,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-30 14:21:32,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-30 14:21:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:21:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:21:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:21:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-30 14:21:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-30 14:21:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-30 14:21:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-01-30 14:21:32,709 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-01-30 14:21:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:21:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:21:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:21:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:21:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-30 14:21:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-30 14:21:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-30 14:21:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:21:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:21:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-30 14:21:32,710 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-30 14:21:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:21:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:21:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:21:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:21:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:21:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-30 14:21:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-30 14:21:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-30 14:21:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:21:32,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:21:32,713 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:21:32,813 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:21:32,814 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:21:33,109 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:21:33,110 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:21:33,338 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:21:33,338 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-30 14:21:33,338 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:21:33 BoogieIcfgContainer [2024-01-30 14:21:33,339 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:21:33,340 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:21:33,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:21:33,344 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:21:33,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:21:31" (1/4) ... [2024-01-30 14:21:33,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3353ef9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:21:33, skipping insertion in model container [2024-01-30 14:21:33,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:21:32" (2/4) ... [2024-01-30 14:21:33,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3353ef9d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:21:33, skipping insertion in model container [2024-01-30 14:21:33,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:21:32" (3/4) ... [2024-01-30 14:21:33,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3353ef9d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:21:33, skipping insertion in model container [2024-01-30 14:21:33,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:21:33" (4/4) ... [2024-01-30 14:21:33,348 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2024-01-30 14:21:33,367 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:21:33,367 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-01-30 14:21:33,367 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:21:33,449 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-30 14:21:33,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 149 transitions, 312 flow [2024-01-30 14:21:33,556 INFO L124 PetriNetUnfolderBase]: 4/147 cut-off events. [2024-01-30 14:21:33,557 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-30 14:21:33,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 147 events. 4/147 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 303 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2024-01-30 14:21:33,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 149 transitions, 312 flow [2024-01-30 14:21:33,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 145 transitions, 299 flow [2024-01-30 14:21:33,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:21:33,588 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;@45083156, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:21:33,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2024-01-30 14:21:33,592 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:21:33,592 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:21:33,592 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:21:33,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:33,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:21:33,593 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-30 14:21:33,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:33,599 INFO L85 PathProgramCache]: Analyzing trace with hash 16376, now seen corresponding path program 1 times [2024-01-30 14:21:33,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:33,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295395126] [2024-01-30 14:21:33,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:33,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:33,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:33,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295395126] [2024-01-30 14:21:33,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295395126] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:33,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:33,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:21:33,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238221649] [2024-01-30 14:21:33,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:33,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:21:33,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:33,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:21:33,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:21:33,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 149 [2024-01-30 14:21:33,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 145 transitions, 299 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:33,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:33,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 149 [2024-01-30 14:21:33,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:37,176 INFO L124 PetriNetUnfolderBase]: 16286/37468 cut-off events. [2024-01-30 14:21:37,177 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-01-30 14:21:37,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65018 conditions, 37468 events. 16286/37468 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 395402 event pairs, 8415 based on Foata normal form. 4321/39359 useless extension candidates. Maximal degree in co-relation 64850. Up to 15725 conditions per place. [2024-01-30 14:21:37,409 INFO L140 encePairwiseOnDemand]: 107/149 looper letters, 108 selfloop transitions, 18 changer transitions 0/191 dead transitions. [2024-01-30 14:21:37,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 191 transitions, 649 flow [2024-01-30 14:21:37,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:21:37,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:21:37,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2024-01-30 14:21:37,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7986577181208053 [2024-01-30 14:21:37,427 INFO L175 Difference]: Start difference. First operand has 148 places, 145 transitions, 299 flow. Second operand 3 states and 357 transitions. [2024-01-30 14:21:37,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 191 transitions, 649 flow [2024-01-30 14:21:37,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 191 transitions, 641 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:21:37,441 INFO L231 Difference]: Finished difference. Result has 148 places, 155 transitions, 454 flow [2024-01-30 14:21:37,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=148, PETRI_TRANSITIONS=155} [2024-01-30 14:21:37,447 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, 0 predicate places. [2024-01-30 14:21:37,449 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 155 transitions, 454 flow [2024-01-30 14:21:37,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:37,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:37,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-30 14:21:37,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:21:37,455 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-30 14:21:37,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:37,456 INFO L85 PathProgramCache]: Analyzing trace with hash 488530577, now seen corresponding path program 1 times [2024-01-30 14:21:37,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:37,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216430184] [2024-01-30 14:21:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:37,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:37,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:37,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216430184] [2024-01-30 14:21:37,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216430184] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:37,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:37,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:21:37,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825736174] [2024-01-30 14:21:37,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:37,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:21:37,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:37,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:21:37,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:21:37,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 149 [2024-01-30 14:21:37,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 155 transitions, 454 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:37,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:37,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 149 [2024-01-30 14:21:37,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:40,237 INFO L124 PetriNetUnfolderBase]: 11973/33809 cut-off events. [2024-01-30 14:21:40,238 INFO L125 PetriNetUnfolderBase]: For 9650/9906 co-relation queries the response was YES. [2024-01-30 14:21:40,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63722 conditions, 33809 events. 11973/33809 cut-off events. For 9650/9906 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 397834 event pairs, 2735 based on Foata normal form. 474/31163 useless extension candidates. Maximal degree in co-relation 63551. Up to 16987 conditions per place. [2024-01-30 14:21:40,410 INFO L140 encePairwiseOnDemand]: 145/149 looper letters, 89 selfloop transitions, 2 changer transitions 0/190 dead transitions. [2024-01-30 14:21:40,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 190 transitions, 740 flow [2024-01-30 14:21:40,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:40,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:40,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2024-01-30 14:21:40,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7634228187919463 [2024-01-30 14:21:40,414 INFO L175 Difference]: Start difference. First operand has 148 places, 155 transitions, 454 flow. Second operand 4 states and 455 transitions. [2024-01-30 14:21:40,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 190 transitions, 740 flow [2024-01-30 14:21:40,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 190 transitions, 692 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:21:40,443 INFO L231 Difference]: Finished difference. Result has 147 places, 153 transitions, 418 flow [2024-01-30 14:21:40,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=418, PETRI_PLACES=147, PETRI_TRANSITIONS=153} [2024-01-30 14:21:40,444 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, -1 predicate places. [2024-01-30 14:21:40,445 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 153 transitions, 418 flow [2024-01-30 14:21:40,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:40,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:40,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:40,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:21:40,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-30 14:21:40,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:40,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1324322970, now seen corresponding path program 1 times [2024-01-30 14:21:40,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:40,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304670500] [2024-01-30 14:21:40,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:40,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:40,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:40,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:40,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304670500] [2024-01-30 14:21:40,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304670500] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:40,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:40,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:21:40,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502760829] [2024-01-30 14:21:40,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:40,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:21:40,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:40,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:21:40,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:21:40,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 149 [2024-01-30 14:21:40,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 153 transitions, 418 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:40,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:40,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 149 [2024-01-30 14:21:40,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:42,653 INFO L124 PetriNetUnfolderBase]: 12383/32881 cut-off events. [2024-01-30 14:21:42,653 INFO L125 PetriNetUnfolderBase]: For 3648/3690 co-relation queries the response was YES. [2024-01-30 14:21:42,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60063 conditions, 32881 events. 12383/32881 cut-off events. For 3648/3690 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 371758 event pairs, 9049 based on Foata normal form. 414/29643 useless extension candidates. Maximal degree in co-relation 60048. Up to 16903 conditions per place. [2024-01-30 14:21:42,776 INFO L140 encePairwiseOnDemand]: 145/149 looper letters, 98 selfloop transitions, 2 changer transitions 0/197 dead transitions. [2024-01-30 14:21:42,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 197 transitions, 731 flow [2024-01-30 14:21:42,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:42,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:42,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 464 transitions. [2024-01-30 14:21:42,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7785234899328859 [2024-01-30 14:21:42,778 INFO L175 Difference]: Start difference. First operand has 147 places, 153 transitions, 418 flow. Second operand 4 states and 464 transitions. [2024-01-30 14:21:42,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 197 transitions, 731 flow [2024-01-30 14:21:42,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 197 transitions, 728 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:21:42,785 INFO L231 Difference]: Finished difference. Result has 146 places, 151 transitions, 415 flow [2024-01-30 14:21:42,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=415, PETRI_PLACES=146, PETRI_TRANSITIONS=151} [2024-01-30 14:21:42,786 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, -2 predicate places. [2024-01-30 14:21:42,786 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 151 transitions, 415 flow [2024-01-30 14:21:42,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:42,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:42,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:42,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:21:42,787 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-30 14:21:42,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:42,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1829103239, now seen corresponding path program 1 times [2024-01-30 14:21:42,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:42,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634400369] [2024-01-30 14:21:42,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:42,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:42,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:42,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634400369] [2024-01-30 14:21:42,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634400369] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:42,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:42,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:21:42,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723867530] [2024-01-30 14:21:42,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:42,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:21:42,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:42,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:21:42,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:21:42,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 149 [2024-01-30 14:21:42,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 151 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:42,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:42,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 149 [2024-01-30 14:21:42,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:46,107 INFO L124 PetriNetUnfolderBase]: 22383/49203 cut-off events. [2024-01-30 14:21:46,107 INFO L125 PetriNetUnfolderBase]: For 9674/10209 co-relation queries the response was YES. [2024-01-30 14:21:46,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100451 conditions, 49203 events. 22383/49203 cut-off events. For 9674/10209 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 521071 event pairs, 5419 based on Foata normal form. 1242/48939 useless extension candidates. Maximal degree in co-relation 95460. Up to 19072 conditions per place. [2024-01-30 14:21:46,322 INFO L140 encePairwiseOnDemand]: 118/149 looper letters, 167 selfloop transitions, 24 changer transitions 0/254 dead transitions. [2024-01-30 14:21:46,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 254 transitions, 1093 flow [2024-01-30 14:21:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:46,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:46,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 450 transitions. [2024-01-30 14:21:46,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7550335570469798 [2024-01-30 14:21:46,325 INFO L175 Difference]: Start difference. First operand has 146 places, 151 transitions, 415 flow. Second operand 4 states and 450 transitions. [2024-01-30 14:21:46,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 254 transitions, 1093 flow [2024-01-30 14:21:46,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 254 transitions, 1086 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:21:46,328 INFO L231 Difference]: Finished difference. Result has 148 places, 168 transitions, 630 flow [2024-01-30 14:21:46,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=630, PETRI_PLACES=148, PETRI_TRANSITIONS=168} [2024-01-30 14:21:46,329 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, 0 predicate places. [2024-01-30 14:21:46,329 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 168 transitions, 630 flow [2024-01-30 14:21:46,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:46,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:46,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:46,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-30 14:21:46,330 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-30 14:21:46,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:46,330 INFO L85 PathProgramCache]: Analyzing trace with hash -663369071, now seen corresponding path program 1 times [2024-01-30 14:21:46,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:46,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623529480] [2024-01-30 14:21:46,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:46,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:46,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:46,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:46,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623529480] [2024-01-30 14:21:46,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623529480] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:46,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:46,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:21:46,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17515765] [2024-01-30 14:21:46,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:46,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:21:46,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:46,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:21:46,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:21:46,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 149 [2024-01-30 14:21:46,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 168 transitions, 630 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:46,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:46,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 149 [2024-01-30 14:21:46,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:50,343 INFO L124 PetriNetUnfolderBase]: 20795/47496 cut-off events. [2024-01-30 14:21:50,343 INFO L125 PetriNetUnfolderBase]: For 31068/32245 co-relation queries the response was YES. [2024-01-30 14:21:50,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107117 conditions, 47496 events. 20795/47496 cut-off events. For 31068/32245 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 514285 event pairs, 5053 based on Foata normal form. 840/46477 useless extension candidates. Maximal degree in co-relation 107099. Up to 19117 conditions per place. [2024-01-30 14:21:50,569 INFO L140 encePairwiseOnDemand]: 128/149 looper letters, 160 selfloop transitions, 19 changer transitions 0/252 dead transitions. [2024-01-30 14:21:50,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 252 transitions, 1276 flow [2024-01-30 14:21:50,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:50,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:50,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 456 transitions. [2024-01-30 14:21:50,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7651006711409396 [2024-01-30 14:21:50,577 INFO L175 Difference]: Start difference. First operand has 148 places, 168 transitions, 630 flow. Second operand 4 states and 456 transitions. [2024-01-30 14:21:50,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 252 transitions, 1276 flow [2024-01-30 14:21:50,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 252 transitions, 1240 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:21:50,608 INFO L231 Difference]: Finished difference. Result has 149 places, 167 transitions, 686 flow [2024-01-30 14:21:50,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=686, PETRI_PLACES=149, PETRI_TRANSITIONS=167} [2024-01-30 14:21:50,610 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, 1 predicate places. [2024-01-30 14:21:50,610 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 167 transitions, 686 flow [2024-01-30 14:21:50,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:50,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:50,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:50,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-30 14:21:50,611 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-30 14:21:50,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:50,611 INFO L85 PathProgramCache]: Analyzing trace with hash -563861227, now seen corresponding path program 1 times [2024-01-30 14:21:50,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:50,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979297768] [2024-01-30 14:21:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:50,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:50,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:50,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:50,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979297768] [2024-01-30 14:21:50,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979297768] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:50,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:50,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:21:50,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20922842] [2024-01-30 14:21:50,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:50,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:21:50,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:50,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:21:50,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:21:50,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 149 [2024-01-30 14:21:50,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 167 transitions, 686 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:50,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:50,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 149 [2024-01-30 14:21:50,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:55,882 INFO L124 PetriNetUnfolderBase]: 28992/63725 cut-off events. [2024-01-30 14:21:55,882 INFO L125 PetriNetUnfolderBase]: For 39718/39819 co-relation queries the response was YES. [2024-01-30 14:21:56,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149076 conditions, 63725 events. 28992/63725 cut-off events. For 39718/39819 co-relation queries the response was YES. Maximal size of possible extension queue 1072. Compared 690685 event pairs, 7150 based on Foata normal form. 1094/63338 useless extension candidates. Maximal degree in co-relation 143487. Up to 18517 conditions per place. [2024-01-30 14:21:56,258 INFO L140 encePairwiseOnDemand]: 125/149 looper letters, 165 selfloop transitions, 40 changer transitions 0/260 dead transitions. [2024-01-30 14:21:56,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 260 transitions, 1327 flow [2024-01-30 14:21:56,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:21:56,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:21:56,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 419 transitions. [2024-01-30 14:21:56,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7030201342281879 [2024-01-30 14:21:56,261 INFO L175 Difference]: Start difference. First operand has 149 places, 167 transitions, 686 flow. Second operand 4 states and 419 transitions. [2024-01-30 14:21:56,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 260 transitions, 1327 flow [2024-01-30 14:21:56,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 260 transitions, 1306 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:21:56,355 INFO L231 Difference]: Finished difference. Result has 152 places, 174 transitions, 832 flow [2024-01-30 14:21:56,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=832, PETRI_PLACES=152, PETRI_TRANSITIONS=174} [2024-01-30 14:21:56,357 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, 4 predicate places. [2024-01-30 14:21:56,357 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 174 transitions, 832 flow [2024-01-30 14:21:56,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:56,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:56,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:21:56,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-30 14:21:56,358 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-30 14:21:56,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:56,359 INFO L85 PathProgramCache]: Analyzing trace with hash -299828196, now seen corresponding path program 1 times [2024-01-30 14:21:56,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:56,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270450004] [2024-01-30 14:21:56,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:56,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:56,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:56,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270450004] [2024-01-30 14:21:56,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270450004] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:56,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:56,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:21:56,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796142358] [2024-01-30 14:21:56,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:56,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:21:56,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:56,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:21:56,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:21:56,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 149 [2024-01-30 14:21:56,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 174 transitions, 832 flow. Second operand has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:56,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:56,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 149 [2024-01-30 14:21:56,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:22:01,311 INFO L124 PetriNetUnfolderBase]: 25343/52863 cut-off events. [2024-01-30 14:22:01,311 INFO L125 PetriNetUnfolderBase]: For 71186/71189 co-relation queries the response was YES. [2024-01-30 14:22:01,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136066 conditions, 52863 events. 25343/52863 cut-off events. For 71186/71189 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 536714 event pairs, 4390 based on Foata normal form. 3384/55655 useless extension candidates. Maximal degree in co-relation 129977. Up to 15343 conditions per place. [2024-01-30 14:22:01,550 INFO L140 encePairwiseOnDemand]: 120/149 looper letters, 203 selfloop transitions, 25 changer transitions 0/272 dead transitions. [2024-01-30 14:22:01,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 272 transitions, 1408 flow [2024-01-30 14:22:01,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:22:01,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:22:01,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 498 transitions. [2024-01-30 14:22:01,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6684563758389261 [2024-01-30 14:22:01,552 INFO L175 Difference]: Start difference. First operand has 152 places, 174 transitions, 832 flow. Second operand 5 states and 498 transitions. [2024-01-30 14:22:01,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 272 transitions, 1408 flow [2024-01-30 14:22:01,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 272 transitions, 1367 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:22:01,564 INFO L231 Difference]: Finished difference. Result has 150 places, 149 transitions, 636 flow [2024-01-30 14:22:01,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=636, PETRI_PLACES=150, PETRI_TRANSITIONS=149} [2024-01-30 14:22:01,565 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, 2 predicate places. [2024-01-30 14:22:01,565 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 149 transitions, 636 flow [2024-01-30 14:22:01,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:01,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:22:01,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:22:01,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-30 14:22:01,566 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-30 14:22:01,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:22:01,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1282848578, now seen corresponding path program 1 times [2024-01-30 14:22:01,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:22:01,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370836096] [2024-01-30 14:22:01,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:22:01,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:22:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:22:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:22:01,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:22:01,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370836096] [2024-01-30 14:22:01,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370836096] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:22:01,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:22:01,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:22:01,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956345785] [2024-01-30 14:22:01,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:22:01,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:22:01,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:22:01,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:22:01,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:22:01,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 149 [2024-01-30 14:22:01,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 149 transitions, 636 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:01,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:22:01,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 149 [2024-01-30 14:22:01,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:22:06,104 INFO L124 PetriNetUnfolderBase]: 26046/55374 cut-off events. [2024-01-30 14:22:06,104 INFO L125 PetriNetUnfolderBase]: For 57879/58477 co-relation queries the response was YES. [2024-01-30 14:22:06,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139286 conditions, 55374 events. 26046/55374 cut-off events. For 57879/58477 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 570108 event pairs, 7776 based on Foata normal form. 1058/55039 useless extension candidates. Maximal degree in co-relation 139263. Up to 15898 conditions per place. [2024-01-30 14:22:06,370 INFO L140 encePairwiseOnDemand]: 125/149 looper letters, 161 selfloop transitions, 27 changer transitions 0/239 dead transitions. [2024-01-30 14:22:06,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 239 transitions, 1267 flow [2024-01-30 14:22:06,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:22:06,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:22:06,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 411 transitions. [2024-01-30 14:22:06,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6895973154362416 [2024-01-30 14:22:06,371 INFO L175 Difference]: Start difference. First operand has 150 places, 149 transitions, 636 flow. Second operand 4 states and 411 transitions. [2024-01-30 14:22:06,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 239 transitions, 1267 flow [2024-01-30 14:22:06,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 239 transitions, 1207 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:22:06,397 INFO L231 Difference]: Finished difference. Result has 151 places, 157 transitions, 722 flow [2024-01-30 14:22:06,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=722, PETRI_PLACES=151, PETRI_TRANSITIONS=157} [2024-01-30 14:22:06,398 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, 3 predicate places. [2024-01-30 14:22:06,398 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 157 transitions, 722 flow [2024-01-30 14:22:06,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:06,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:22:06,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:22:06,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-30 14:22:06,398 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-30 14:22:06,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:22:06,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1113599628, now seen corresponding path program 1 times [2024-01-30 14:22:06,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:22:06,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427055829] [2024-01-30 14:22:06,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:22:06,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:22:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:22:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:22:06,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:22:06,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427055829] [2024-01-30 14:22:06,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427055829] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:22:06,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:22:06,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:22:06,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261978046] [2024-01-30 14:22:06,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:22:06,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:22:06,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:22:06,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:22:06,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:22:06,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 149 [2024-01-30 14:22:06,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 157 transitions, 722 flow. Second operand has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:06,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:22:06,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 149 [2024-01-30 14:22:06,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:22:10,167 INFO L124 PetriNetUnfolderBase]: 20692/42373 cut-off events. [2024-01-30 14:22:10,167 INFO L125 PetriNetUnfolderBase]: For 66397/66857 co-relation queries the response was YES. [2024-01-30 14:22:10,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113620 conditions, 42373 events. 20692/42373 cut-off events. For 66397/66857 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 408965 event pairs, 5370 based on Foata normal form. 2110/43601 useless extension candidates. Maximal degree in co-relation 113595. Up to 14929 conditions per place. [2024-01-30 14:22:10,405 INFO L140 encePairwiseOnDemand]: 124/149 looper letters, 181 selfloop transitions, 14 changer transitions 4/247 dead transitions. [2024-01-30 14:22:10,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 247 transitions, 1222 flow [2024-01-30 14:22:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:22:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:22:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 481 transitions. [2024-01-30 14:22:10,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6456375838926175 [2024-01-30 14:22:10,407 INFO L175 Difference]: Start difference. First operand has 151 places, 157 transitions, 722 flow. Second operand 5 states and 481 transitions. [2024-01-30 14:22:10,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 247 transitions, 1222 flow [2024-01-30 14:22:10,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 247 transitions, 1201 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-30 14:22:10,619 INFO L231 Difference]: Finished difference. Result has 149 places, 140 transitions, 550 flow [2024-01-30 14:22:10,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=550, PETRI_PLACES=149, PETRI_TRANSITIONS=140} [2024-01-30 14:22:10,620 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, 1 predicate places. [2024-01-30 14:22:10,620 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 140 transitions, 550 flow [2024-01-30 14:22:10,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:10,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:22:10,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:22:10,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-30 14:22:10,621 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-30 14:22:10,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:22:10,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1124207429, now seen corresponding path program 1 times [2024-01-30 14:22:10,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:22:10,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041372495] [2024-01-30 14:22:10,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:22:10,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:22:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:22:10,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:22:10,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:22:10,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041372495] [2024-01-30 14:22:10,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041372495] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:22:10,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:22:10,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:22:10,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154729295] [2024-01-30 14:22:10,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:22:10,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:22:10,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:22:10,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:22:10,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:22:10,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 149 [2024-01-30 14:22:10,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 140 transitions, 550 flow. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:22:10,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:22:10,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 149 [2024-01-30 14:22:10,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand