./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/48_ticket_lock_low_contention_vs-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cb09d658 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/48_ticket_lock_low_contention_vs-pthread.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-cb09d65-m [2024-01-27 23:02:57,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 23:02:57,965 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 23:02:57,968 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 23:02:57,968 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 23:02:57,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 23:02:57,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 23:02:57,983 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 23:02:57,984 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 23:02:57,985 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 23:02:57,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 23:02:57,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 23:02:57,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 23:02:57,989 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 23:02:57,989 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 23:02:57,989 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 23:02:57,989 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 23:02:57,990 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 23:02:57,990 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 23:02:57,990 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 23:02:57,991 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 23:02:57,991 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 23:02:57,991 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 23:02:57,991 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 23:02:57,991 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 23:02:57,992 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 23:02:57,992 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 23:02:57,992 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 23:02:57,992 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 23:02:57,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 23:02:57,993 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 23:02:57,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 23:02:57,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 23:02:57,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 23:02:57,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 23:02:57,994 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 23:02:57,994 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 23:02:57,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 23:02:57,995 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 23:02:57,995 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 23:02:57,995 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 23:02:57,996 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 23:02:57,996 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 23:02:57,996 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-27 23:02:58,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 23:02:58,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 23:02:58,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 23:02:58,244 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 23:02:58,244 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 23:02:58,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2024-01-27 23:02:59,309 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 23:02:59,488 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 23:02:59,488 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2024-01-27 23:02:59,497 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fc0ae223/fadd112648cc4c64bab6a6d9e1258649/FLAG0477746a8 [2024-01-27 23:02:59,506 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fc0ae223/fadd112648cc4c64bab6a6d9e1258649 [2024-01-27 23:02:59,508 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-27 23:02:59,509 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-27 23:02:59,509 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/48_ticket_lock_low_contention_vs-pthread.yml/witness.yml [2024-01-27 23:02:59,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 23:02:59,589 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-27 23:02:59,591 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 23:02:59,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 23:02:59,595 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 23:02:59,595 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:02:59" (1/2) ... [2024-01-27 23:02:59,597 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7264d64a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:02:59, skipping insertion in model container [2024-01-27 23:02:59,598 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:02:59" (1/2) ... [2024-01-27 23:02:59,599 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21d7ea56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:02:59, skipping insertion in model container [2024-01-27 23:02:59,599 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 11:02:59" (2/2) ... [2024-01-27 23:02:59,600 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7264d64a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:02:59, skipping insertion in model container [2024-01-27 23:02:59,600 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 11:02:59" (2/2) ... [2024-01-27 23:02:59,600 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-27 23:02:59,620 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-27 23:02:59,622 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 23:02:59,622 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 23:02:59,622 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-27 23:02:59,623 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 0U [2024-01-27 23:02:59,623 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-27 23:02:59,623 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 23:02:59,624 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-27 23:02:59,624 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 23:02:59,624 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 0U [2024-01-27 23:02:59,624 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-27 23:02:59,624 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 23:02:59,624 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 23:02:59,624 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-27 23:02:59,624 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-27 23:02:59,625 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 23:02:59,625 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 23:02:59,625 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 0U [2024-01-27 23:02:59,625 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 23:02:59,625 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] (unsigned long )arg == 0UL [2024-01-27 23:02:59,625 INFO L98 nessWitnessExtractor]: Location invariant before [L695-L695] (unsigned long )arg == 0UL [2024-01-27 23:02:59,626 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 23:02:59,626 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 23:02:59,626 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-27 23:02:59,626 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 23:02:59,626 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 0U [2024-01-27 23:02:59,626 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-27 23:02:59,626 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] c == 0U [2024-01-27 23:02:59,627 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] (unsigned long )arg == 0UL [2024-01-27 23:02:59,718 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 23:02:59,966 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i[30570,30583] [2024-01-27 23:02:59,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 23:02:59,981 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-27 23:03:00,023 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i[30570,30583] [2024-01-27 23:03:00,024 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-27 23:03:00,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 23:03:00,049 INFO L206 MainTranslator]: Completed translation [2024-01-27 23:03:00,050 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:03:00 WrapperNode [2024-01-27 23:03:00,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 23:03:00,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 23:03:00,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 23:03:00,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 23:03:00,057 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 27.01 11:03:00" (1/1) ... [2024-01-27 23:03:00,081 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 27.01 11:03:00" (1/1) ... [2024-01-27 23:03:00,103 INFO L138 Inliner]: procedures = 165, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2024-01-27 23:03:00,105 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 23:03:00,106 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 23:03:00,106 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 23:03:00,106 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 23:03:00,114 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:03:00" (1/1) ... [2024-01-27 23:03:00,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:03:00" (1/1) ... [2024-01-27 23:03:00,121 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:03:00" (1/1) ... [2024-01-27 23:03:00,140 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 5, 1]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-01-27 23:03:00,141 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:03:00" (1/1) ... [2024-01-27 23:03:00,141 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:03:00" (1/1) ... [2024-01-27 23:03:00,153 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:03:00" (1/1) ... [2024-01-27 23:03:00,156 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:03:00" (1/1) ... [2024-01-27 23:03:00,163 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:03:00" (1/1) ... [2024-01-27 23:03:00,165 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:03:00" (1/1) ... [2024-01-27 23:03:00,167 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 23:03:00,171 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 23:03:00,172 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 23:03:00,172 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 23:03:00,173 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:03:00" (1/1) ... [2024-01-27 23:03:00,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 23:03:00,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 23:03:00,201 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) [2024-01-27 23:03:00,202 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 [2024-01-27 23:03:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-27 23:03:00,228 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-27 23:03:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 23:03:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 23:03:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 23:03:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-27 23:03:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 23:03:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 23:03:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 23:03:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 23:03:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 23:03:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 23:03:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-27 23:03:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 23:03:00,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 23:03:00,231 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 23:03:00,323 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 23:03:00,325 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 23:03:00,485 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 23:03:00,485 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 23:03:00,576 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 23:03:00,576 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-01-27 23:03:00,577 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:03:00 BoogieIcfgContainer [2024-01-27 23:03:00,577 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 23:03:00,578 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 23:03:00,578 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 23:03:00,580 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 23:03:00,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:02:59" (1/4) ... [2024-01-27 23:03:00,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170c0a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:03:00, skipping insertion in model container [2024-01-27 23:03:00,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 11:02:59" (2/4) ... [2024-01-27 23:03:00,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170c0a36 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 11:03:00, skipping insertion in model container [2024-01-27 23:03:00,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 11:03:00" (3/4) ... [2024-01-27 23:03:00,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170c0a36 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 11:03:00, skipping insertion in model container [2024-01-27 23:03:00,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:03:00" (4/4) ... [2024-01-27 23:03:00,583 INFO L112 eAbstractionObserver]: Analyzing ICFG 48_ticket_lock_low_contention_vs-pthread.i [2024-01-27 23:03:00,598 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 23:03:00,599 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-01-27 23:03:00,599 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 23:03:00,653 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 23:03:00,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 67 transitions, 138 flow [2024-01-27 23:03:00,740 INFO L124 PetriNetUnfolderBase]: 5/101 cut-off events. [2024-01-27 23:03:00,741 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 23:03:00,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 101 events. 5/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 324 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2024-01-27 23:03:00,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 67 transitions, 138 flow [2024-01-27 23:03:00,747 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 67 transitions, 138 flow [2024-01-27 23:03:00,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 23:03:00,764 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;@11fe1ce2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 23:03:00,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2024-01-27 23:03:00,766 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 23:03:00,767 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-01-27 23:03:00,767 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 23:03:00,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:03:00,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 23:03:00,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-27 23:03:00,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:03:00,773 INFO L85 PathProgramCache]: Analyzing trace with hash 7499457, now seen corresponding path program 1 times [2024-01-27 23:03:00,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:03:00,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120116613] [2024-01-27 23:03:00,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:03:00,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:03:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:03:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:03:00,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:03:00,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120116613] [2024-01-27 23:03:00,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120116613] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:03:00,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:03:00,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 23:03:00,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616054109] [2024-01-27 23:03:00,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:03:00,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-27 23:03:00,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:03:00,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-27 23:03:00,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-27 23:03:00,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 67 [2024-01-27 23:03:00,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 138 flow. Second operand has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 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) [2024-01-27 23:03:00,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:03:00,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 67 [2024-01-27 23:03:00,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:03:01,053 INFO L124 PetriNetUnfolderBase]: 32/260 cut-off events. [2024-01-27 23:03:01,053 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 23:03:01,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 260 events. 32/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1303 event pairs, 32 based on Foata normal form. 14/192 useless extension candidates. Maximal degree in co-relation 297. Up to 87 conditions per place. [2024-01-27 23:03:01,057 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 14 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2024-01-27 23:03:01,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 160 flow [2024-01-27 23:03:01,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-27 23:03:01,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-27 23:03:01,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 117 transitions. [2024-01-27 23:03:01,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8731343283582089 [2024-01-27 23:03:01,069 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 138 flow. Second operand 2 states and 117 transitions. [2024-01-27 23:03:01,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 160 flow [2024-01-27 23:03:01,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 64 transitions, 160 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 23:03:01,078 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 132 flow [2024-01-27 23:03:01,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=132, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-01-27 23:03:01,083 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2024-01-27 23:03:01,083 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 132 flow [2024-01-27 23:03:01,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 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) [2024-01-27 23:03:01,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:03:01,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-27 23:03:01,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 23:03:01,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-27 23:03:01,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:03:01,086 INFO L85 PathProgramCache]: Analyzing trace with hash 232556047, now seen corresponding path program 1 times [2024-01-27 23:03:01,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:03:01,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256869651] [2024-01-27 23:03:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:03:01,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:03:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:03:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:03:01,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:03:01,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256869651] [2024-01-27 23:03:01,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256869651] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:03:01,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:03:01,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 23:03:01,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369075301] [2024-01-27 23:03:01,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:03:01,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 23:03:01,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:03:01,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 23:03:01,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 23:03:01,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 67 [2024-01-27 23:03:01,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2024-01-27 23:03:01,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:03:01,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 67 [2024-01-27 23:03:01,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:03:01,362 INFO L124 PetriNetUnfolderBase]: 32/224 cut-off events. [2024-01-27 23:03:01,363 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 23:03:01,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 224 events. 32/224 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1040 event pairs, 16 based on Foata normal form. 30/204 useless extension candidates. Maximal degree in co-relation 312. Up to 47 conditions per place. [2024-01-27 23:03:01,366 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 16 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2024-01-27 23:03:01,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 164 flow [2024-01-27 23:03:01,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 23:03:01,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 23:03:01,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-01-27 23:03:01,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7761194029850746 [2024-01-27 23:03:01,372 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 132 flow. Second operand 3 states and 156 transitions. [2024-01-27 23:03:01,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 164 flow [2024-01-27 23:03:01,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 23:03:01,375 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 124 flow [2024-01-27 23:03:01,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-01-27 23:03:01,375 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2024-01-27 23:03:01,376 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 124 flow [2024-01-27 23:03:01,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2024-01-27 23:03:01,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:03:01,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-27 23:03:01,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 23:03:01,376 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-27 23:03:01,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:03:01,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1380588070, now seen corresponding path program 1 times [2024-01-27 23:03:01,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:03:01,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722951291] [2024-01-27 23:03:01,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:03:01,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:03:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:03:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:03:01,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:03:01,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722951291] [2024-01-27 23:03:01,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722951291] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:03:01,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:03:01,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 23:03:01,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412810210] [2024-01-27 23:03:01,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:03:01,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:03:01,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:03:01,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:03:01,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:03:01,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 67 [2024-01-27 23:03:01,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2024-01-27 23:03:01,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:03:01,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 67 [2024-01-27 23:03:01,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:03:01,606 INFO L124 PetriNetUnfolderBase]: 40/302 cut-off events. [2024-01-27 23:03:01,607 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-01-27 23:03:01,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 302 events. 40/302 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1562 event pairs, 0 based on Foata normal form. 45/294 useless extension candidates. Maximal degree in co-relation 421. Up to 85 conditions per place. [2024-01-27 23:03:01,609 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 27 selfloop transitions, 2 changer transitions 2/68 dead transitions. [2024-01-27 23:03:01,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 214 flow [2024-01-27 23:03:01,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 23:03:01,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 23:03:01,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-01-27 23:03:01,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7798507462686567 [2024-01-27 23:03:01,613 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 124 flow. Second operand 4 states and 209 transitions. [2024-01-27 23:03:01,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 214 flow [2024-01-27 23:03:01,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 68 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 23:03:01,615 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 112 flow [2024-01-27 23:03:01,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-01-27 23:03:01,617 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -8 predicate places. [2024-01-27 23:03:01,618 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 112 flow [2024-01-27 23:03:01,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2024-01-27 23:03:01,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:03:01,618 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-01-27 23:03:01,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 23:03:01,619 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-27 23:03:01,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:03:01,619 INFO L85 PathProgramCache]: Analyzing trace with hash 151393908, now seen corresponding path program 1 times [2024-01-27 23:03:01,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:03:01,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317491909] [2024-01-27 23:03:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:03:01,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:03:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 23:03:01,647 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 23:03:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 23:03:01,676 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-27 23:03:01,677 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 23:03:01,678 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 34 remaining) [2024-01-27 23:03:01,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 34 remaining) [2024-01-27 23:03:01,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 34 remaining) [2024-01-27 23:03:01,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 34 remaining) [2024-01-27 23:03:01,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 34 remaining) [2024-01-27 23:03:01,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 34 remaining) [2024-01-27 23:03:01,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 34 remaining) [2024-01-27 23:03:01,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 34 remaining) [2024-01-27 23:03:01,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (25 of 34 remaining) [2024-01-27 23:03:01,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 34 remaining) [2024-01-27 23:03:01,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 34 remaining) [2024-01-27 23:03:01,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 34 remaining) [2024-01-27 23:03:01,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 34 remaining) [2024-01-27 23:03:01,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 34 remaining) [2024-01-27 23:03:01,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 34 remaining) [2024-01-27 23:03:01,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 34 remaining) [2024-01-27 23:03:01,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 34 remaining) [2024-01-27 23:03:01,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 34 remaining) [2024-01-27 23:03:01,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 34 remaining) [2024-01-27 23:03:01,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (14 of 34 remaining) [2024-01-27 23:03:01,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 34 remaining) [2024-01-27 23:03:01,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 34 remaining) [2024-01-27 23:03:01,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 34 remaining) [2024-01-27 23:03:01,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 34 remaining) [2024-01-27 23:03:01,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 34 remaining) [2024-01-27 23:03:01,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 34 remaining) [2024-01-27 23:03:01,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 34 remaining) [2024-01-27 23:03:01,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 34 remaining) [2024-01-27 23:03:01,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 34 remaining) [2024-01-27 23:03:01,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 34 remaining) [2024-01-27 23:03:01,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (3 of 34 remaining) [2024-01-27 23:03:01,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 34 remaining) [2024-01-27 23:03:01,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 34 remaining) [2024-01-27 23:03:01,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 34 remaining) [2024-01-27 23:03:01,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 23:03:01,689 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-01-27 23:03:01,692 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-27 23:03:01,692 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-27 23:03:01,744 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 23:03:01,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 98 transitions, 206 flow [2024-01-27 23:03:01,760 INFO L124 PetriNetUnfolderBase]: 8/166 cut-off events. [2024-01-27 23:03:01,762 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 23:03:01,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 166 events. 8/166 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 740 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2024-01-27 23:03:01,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 98 transitions, 206 flow [2024-01-27 23:03:01,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 98 transitions, 206 flow [2024-01-27 23:03:01,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 23:03:01,769 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;@11fe1ce2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 23:03:01,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2024-01-27 23:03:01,770 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 23:03:01,770 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-01-27 23:03:01,770 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 23:03:01,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:03:01,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 23:03:01,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 42 more)] === [2024-01-27 23:03:01,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:03:01,771 INFO L85 PathProgramCache]: Analyzing trace with hash 10516289, now seen corresponding path program 1 times [2024-01-27 23:03:01,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:03:01,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110357483] [2024-01-27 23:03:01,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:03:01,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:03:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:03:01,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:03:01,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:03:01,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110357483] [2024-01-27 23:03:01,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110357483] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:03:01,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:03:01,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 23:03:01,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588319697] [2024-01-27 23:03:01,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:03:01,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-27 23:03:01,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:03:01,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-27 23:03:01,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-27 23:03:01,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 98 [2024-01-27 23:03:01,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 98 transitions, 206 flow. Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2024-01-27 23:03:01,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:03:01,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 98 [2024-01-27 23:03:01,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:03:01,952 INFO L124 PetriNetUnfolderBase]: 372/1570 cut-off events. [2024-01-27 23:03:01,952 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-01-27 23:03:01,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 1570 events. 372/1570 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 13098 event pairs, 372 based on Foata normal form. 124/1244 useless extension candidates. Maximal degree in co-relation 399. Up to 652 conditions per place. [2024-01-27 23:03:01,962 INFO L140 encePairwiseOnDemand]: 94/98 looper letters, 19 selfloop transitions, 0 changer transitions 0/94 dead transitions. [2024-01-27 23:03:01,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 236 flow [2024-01-27 23:03:01,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-27 23:03:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-27 23:03:01,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 173 transitions. [2024-01-27 23:03:01,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8826530612244898 [2024-01-27 23:03:01,964 INFO L175 Difference]: Start difference. First operand has 99 places, 98 transitions, 206 flow. Second operand 2 states and 173 transitions. [2024-01-27 23:03:01,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 236 flow [2024-01-27 23:03:01,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 94 transitions, 236 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 23:03:01,967 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 198 flow [2024-01-27 23:03:01,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=198, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2024-01-27 23:03:01,968 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 1 predicate places. [2024-01-27 23:03:01,969 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 198 flow [2024-01-27 23:03:01,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2024-01-27 23:03:01,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:03:01,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-27 23:03:01,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 23:03:01,970 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 42 more)] === [2024-01-27 23:03:01,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:03:01,970 INFO L85 PathProgramCache]: Analyzing trace with hash 326077937, now seen corresponding path program 1 times [2024-01-27 23:03:01,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:03:01,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400880720] [2024-01-27 23:03:01,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:03:01,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:03:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:03:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:03:02,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:03:02,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400880720] [2024-01-27 23:03:02,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400880720] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:03:02,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:03:02,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 23:03:02,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197916932] [2024-01-27 23:03:02,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:03:02,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 23:03:02,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:03:02,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 23:03:02,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 23:03:02,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2024-01-27 23:03:02,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:03:02,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:03:02,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2024-01-27 23:03:02,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:03:02,180 INFO L124 PetriNetUnfolderBase]: 372/1353 cut-off events. [2024-01-27 23:03:02,180 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-01-27 23:03:02,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2026 conditions, 1353 events. 372/1353 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 10621 event pairs, 275 based on Foata normal form. 155/1216 useless extension candidates. Maximal degree in co-relation 2021. Up to 352 conditions per place. [2024-01-27 23:03:02,188 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 25 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-01-27 23:03:02,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 96 transitions, 256 flow [2024-01-27 23:03:02,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 23:03:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 23:03:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2024-01-27 23:03:02,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8163265306122449 [2024-01-27 23:03:02,189 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 198 flow. Second operand 3 states and 240 transitions. [2024-01-27 23:03:02,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 96 transitions, 256 flow [2024-01-27 23:03:02,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 96 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 23:03:02,191 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 190 flow [2024-01-27 23:03:02,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2024-01-27 23:03:02,192 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -3 predicate places. [2024-01-27 23:03:02,192 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 190 flow [2024-01-27 23:03:02,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 23:03:02,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:03:02,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-27 23:03:02,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 23:03:02,193 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 42 more)] === [2024-01-27 23:03:02,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:03:02,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1518620408, now seen corresponding path program 1 times [2024-01-27 23:03:02,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:03:02,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461245303] [2024-01-27 23:03:02,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:03:02,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:03:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:03:02,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:03:02,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:03:02,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461245303] [2024-01-27 23:03:02,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461245303] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:03:02,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:03:02,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 23:03:02,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570007374] [2024-01-27 23:03:02,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:03:02,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:03:02,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:03:02,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:03:02,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:03:02,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2024-01-27 23:03:02,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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) [2024-01-27 23:03:02,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:03:02,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2024-01-27 23:03:02,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:03:02,439 INFO L124 PetriNetUnfolderBase]: 457/2270 cut-off events. [2024-01-27 23:03:02,439 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-01-27 23:03:02,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3160 conditions, 2270 events. 457/2270 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 20580 event pairs, 260 based on Foata normal form. 261/1982 useless extension candidates. Maximal degree in co-relation 3154. Up to 695 conditions per place. [2024-01-27 23:03:02,450 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 37 selfloop transitions, 2 changer transitions 2/103 dead transitions. [2024-01-27 23:03:02,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 103 transitions, 315 flow [2024-01-27 23:03:02,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 23:03:02,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 23:03:02,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2024-01-27 23:03:02,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8137755102040817 [2024-01-27 23:03:02,452 INFO L175 Difference]: Start difference. First operand has 96 places, 88 transitions, 190 flow. Second operand 4 states and 319 transitions. [2024-01-27 23:03:02,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 103 transitions, 315 flow [2024-01-27 23:03:02,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 103 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 23:03:02,456 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 178 flow [2024-01-27 23:03:02,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2024-01-27 23:03:02,458 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -8 predicate places. [2024-01-27 23:03:02,458 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 178 flow [2024-01-27 23:03:02,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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) [2024-01-27 23:03:02,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:03:02,458 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-01-27 23:03:02,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 23:03:02,459 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 42 more)] === [2024-01-27 23:03:02,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:03:02,459 INFO L85 PathProgramCache]: Analyzing trace with hash -2040360103, now seen corresponding path program 1 times [2024-01-27 23:03:02,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:03:02,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499487305] [2024-01-27 23:03:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:03:02,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:03:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:03:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 23:03:02,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:03:02,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499487305] [2024-01-27 23:03:02,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499487305] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:03:02,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:03:02,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 23:03:02,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268161468] [2024-01-27 23:03:02,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:03:02,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:03:02,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:03:02,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:03:02,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:03:02,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2024-01-27 23:03:02,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 82 transitions, 178 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) [2024-01-27 23:03:02,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:03:02,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2024-01-27 23:03:02,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:03:02,724 INFO L124 PetriNetUnfolderBase]: 448/1812 cut-off events. [2024-01-27 23:03:02,724 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-01-27 23:03:02,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2609 conditions, 1812 events. 448/1812 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 15487 event pairs, 56 based on Foata normal form. 225/1729 useless extension candidates. Maximal degree in co-relation 2603. Up to 605 conditions per place. [2024-01-27 23:03:02,733 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 42 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2024-01-27 23:03:02,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 100 transitions, 302 flow [2024-01-27 23:03:02,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 23:03:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 23:03:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 322 transitions. [2024-01-27 23:03:02,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8214285714285714 [2024-01-27 23:03:02,735 INFO L175 Difference]: Start difference. First operand has 91 places, 82 transitions, 178 flow. Second operand 4 states and 322 transitions. [2024-01-27 23:03:02,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 100 transitions, 302 flow [2024-01-27 23:03:02,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 100 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 23:03:02,737 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 167 flow [2024-01-27 23:03:02,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2024-01-27 23:03:02,738 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -13 predicate places. [2024-01-27 23:03:02,738 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 167 flow [2024-01-27 23:03:02,739 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) [2024-01-27 23:03:02,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:03:02,739 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1] [2024-01-27 23:03:02,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 23:03:02,739 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 42 more)] === [2024-01-27 23:03:02,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:03:02,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1173297493, now seen corresponding path program 1 times [2024-01-27 23:03:02,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:03:02,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607079317] [2024-01-27 23:03:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:03:02,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:03:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 23:03:02,752 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 23:03:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 23:03:02,762 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-27 23:03:02,763 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 23:03:02,763 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (44 of 45 remaining) [2024-01-27 23:03:02,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 45 remaining) [2024-01-27 23:03:02,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 45 remaining) [2024-01-27 23:03:02,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 45 remaining) [2024-01-27 23:03:02,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 45 remaining) [2024-01-27 23:03:02,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 45 remaining) [2024-01-27 23:03:02,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 45 remaining) [2024-01-27 23:03:02,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 45 remaining) [2024-01-27 23:03:02,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (36 of 45 remaining) [2024-01-27 23:03:02,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 45 remaining) [2024-01-27 23:03:02,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 45 remaining) [2024-01-27 23:03:02,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 45 remaining) [2024-01-27 23:03:02,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 45 remaining) [2024-01-27 23:03:02,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 45 remaining) [2024-01-27 23:03:02,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 45 remaining) [2024-01-27 23:03:02,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 45 remaining) [2024-01-27 23:03:02,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 45 remaining) [2024-01-27 23:03:02,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 45 remaining) [2024-01-27 23:03:02,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 45 remaining) [2024-01-27 23:03:02,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (25 of 45 remaining) [2024-01-27 23:03:02,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 45 remaining) [2024-01-27 23:03:02,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 45 remaining) [2024-01-27 23:03:02,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 45 remaining) [2024-01-27 23:03:02,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 45 remaining) [2024-01-27 23:03:02,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 45 remaining) [2024-01-27 23:03:02,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 45 remaining) [2024-01-27 23:03:02,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 45 remaining) [2024-01-27 23:03:02,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 45 remaining) [2024-01-27 23:03:02,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 45 remaining) [2024-01-27 23:03:02,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 45 remaining) [2024-01-27 23:03:02,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (14 of 45 remaining) [2024-01-27 23:03:02,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 45 remaining) [2024-01-27 23:03:02,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 45 remaining) [2024-01-27 23:03:02,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 45 remaining) [2024-01-27 23:03:02,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 45 remaining) [2024-01-27 23:03:02,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 45 remaining) [2024-01-27 23:03:02,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 45 remaining) [2024-01-27 23:03:02,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 45 remaining) [2024-01-27 23:03:02,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 45 remaining) [2024-01-27 23:03:02,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 45 remaining) [2024-01-27 23:03:02,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 45 remaining) [2024-01-27 23:03:02,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (3 of 45 remaining) [2024-01-27 23:03:02,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 45 remaining) [2024-01-27 23:03:02,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 45 remaining) [2024-01-27 23:03:02,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 45 remaining) [2024-01-27 23:03:02,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 23:03:02,769 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-01-27 23:03:02,770 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-27 23:03:02,771 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-27 23:03:02,797 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 23:03:02,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 129 transitions, 276 flow [2024-01-27 23:03:02,815 INFO L124 PetriNetUnfolderBase]: 11/231 cut-off events. [2024-01-27 23:03:02,815 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-27 23:03:02,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 231 events. 11/231 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1215 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 172. Up to 8 conditions per place. [2024-01-27 23:03:02,816 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 129 transitions, 276 flow [2024-01-27 23:03:02,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 129 transitions, 276 flow [2024-01-27 23:03:02,824 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 23:03:02,826 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;@11fe1ce2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 23:03:02,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2024-01-27 23:03:02,827 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 23:03:02,827 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-01-27 23:03:02,827 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 23:03:02,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:03:02,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 23:03:02,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:03:02,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:03:02,828 INFO L85 PathProgramCache]: Analyzing trace with hash 14487425, now seen corresponding path program 1 times [2024-01-27 23:03:02,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:03:02,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095638329] [2024-01-27 23:03:02,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:03:02,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:03:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:03:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:03:02,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:03:02,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095638329] [2024-01-27 23:03:02,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095638329] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:03:02,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:03:02,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 23:03:02,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820522327] [2024-01-27 23:03:02,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:03:02,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-27 23:03:02,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:03:02,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-27 23:03:02,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-27 23:03:02,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 129 [2024-01-27 23:03:02,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 129 transitions, 276 flow. Second operand has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 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) [2024-01-27 23:03:02,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:03:02,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 129 [2024-01-27 23:03:02,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:03:03,727 INFO L124 PetriNetUnfolderBase]: 2972/9020 cut-off events. [2024-01-27 23:03:03,728 INFO L125 PetriNetUnfolderBase]: For 455/455 co-relation queries the response was YES. [2024-01-27 23:03:03,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13518 conditions, 9020 events. 2972/9020 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 96226 event pairs, 2972 based on Foata normal form. 899/7628 useless extension candidates. Maximal degree in co-relation 2242. Up to 4377 conditions per place. [2024-01-27 23:03:03,789 INFO L140 encePairwiseOnDemand]: 124/129 looper letters, 24 selfloop transitions, 0 changer transitions 0/124 dead transitions. [2024-01-27 23:03:03,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 124 transitions, 314 flow [2024-01-27 23:03:03,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-27 23:03:03,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-27 23:03:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 229 transitions. [2024-01-27 23:03:03,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8875968992248062 [2024-01-27 23:03:03,790 INFO L175 Difference]: Start difference. First operand has 131 places, 129 transitions, 276 flow. Second operand 2 states and 229 transitions. [2024-01-27 23:03:03,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 124 transitions, 314 flow [2024-01-27 23:03:03,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 124 transitions, 312 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-01-27 23:03:03,793 INFO L231 Difference]: Finished difference. Result has 132 places, 124 transitions, 264 flow [2024-01-27 23:03:03,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=264, PETRI_PLACES=132, PETRI_TRANSITIONS=124} [2024-01-27 23:03:03,795 INFO L281 CegarLoopForPetriNet]: 131 programPoint places, 1 predicate places. [2024-01-27 23:03:03,795 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 124 transitions, 264 flow [2024-01-27 23:03:03,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 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) [2024-01-27 23:03:03,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:03:03,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-27 23:03:03,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 23:03:03,796 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:03:03,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:03:03,796 INFO L85 PathProgramCache]: Analyzing trace with hash 449183282, now seen corresponding path program 1 times [2024-01-27 23:03:03,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:03:03,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254099186] [2024-01-27 23:03:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:03:03,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:03:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:03:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:03:03,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:03:03,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254099186] [2024-01-27 23:03:03,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254099186] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:03:03,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:03:03,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 23:03:03,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150997753] [2024-01-27 23:03:03,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:03:03,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 23:03:03,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:03:03,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 23:03:03,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 23:03:03,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 129 [2024-01-27 23:03:03,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 124 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2024-01-27 23:03:03,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:03:03,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 129 [2024-01-27 23:03:03,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:03:04,624 INFO L124 PetriNetUnfolderBase]: 2972/8084 cut-off events. [2024-01-27 23:03:04,624 INFO L125 PetriNetUnfolderBase]: For 405/405 co-relation queries the response was YES. [2024-01-27 23:03:04,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12558 conditions, 8084 events. 2972/8084 cut-off events. For 405/405 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 81795 event pairs, 1596 based on Foata normal form. 780/7415 useless extension candidates. Maximal degree in co-relation 12552. Up to 2377 conditions per place. [2024-01-27 23:03:04,673 INFO L140 encePairwiseOnDemand]: 121/129 looper letters, 34 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2024-01-27 23:03:04,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 130 transitions, 348 flow [2024-01-27 23:03:04,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 23:03:04,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 23:03:04,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2024-01-27 23:03:04,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8372093023255814 [2024-01-27 23:03:04,675 INFO L175 Difference]: Start difference. First operand has 132 places, 124 transitions, 264 flow. Second operand 3 states and 324 transitions. [2024-01-27 23:03:04,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 130 transitions, 348 flow [2024-01-27 23:03:04,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 130 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 23:03:04,679 INFO L231 Difference]: Finished difference. Result has 128 places, 118 transitions, 256 flow [2024-01-27 23:03:04,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=128, PETRI_TRANSITIONS=118} [2024-01-27 23:03:04,680 INFO L281 CegarLoopForPetriNet]: 131 programPoint places, -3 predicate places. [2024-01-27 23:03:04,680 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 118 transitions, 256 flow [2024-01-27 23:03:04,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2024-01-27 23:03:04,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:03:04,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-27 23:03:04,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 23:03:04,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:03:04,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:03:04,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1039947766, now seen corresponding path program 1 times [2024-01-27 23:03:04,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:03:04,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329647790] [2024-01-27 23:03:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:03:04,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:03:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:03:04,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 23:03:04,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:03:04,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329647790] [2024-01-27 23:03:04,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329647790] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:03:04,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:03:04,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 23:03:04,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479748906] [2024-01-27 23:03:04,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:03:04,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:03:04,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:03:04,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:03:04,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:03:04,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 129 [2024-01-27 23:03:04,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 118 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 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) [2024-01-27 23:03:04,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:03:04,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 129 [2024-01-27 23:03:04,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:03:05,617 INFO L124 PetriNetUnfolderBase]: 3622/11078 cut-off events. [2024-01-27 23:03:05,618 INFO L125 PetriNetUnfolderBase]: For 513/513 co-relation queries the response was YES. [2024-01-27 23:03:05,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16874 conditions, 11078 events. 3622/11078 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 121197 event pairs, 372 based on Foata normal form. 1395/10732 useless extension candidates. Maximal degree in co-relation 16867. Up to 4645 conditions per place. [2024-01-27 23:03:05,681 INFO L140 encePairwiseOnDemand]: 121/129 looper letters, 47 selfloop transitions, 2 changer transitions 2/138 dead transitions. [2024-01-27 23:03:05,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 138 transitions, 416 flow [2024-01-27 23:03:05,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 23:03:05,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 23:03:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 429 transitions. [2024-01-27 23:03:05,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8313953488372093 [2024-01-27 23:03:05,683 INFO L175 Difference]: Start difference. First operand has 128 places, 118 transitions, 256 flow. Second operand 4 states and 429 transitions. [2024-01-27 23:03:05,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 138 transitions, 416 flow [2024-01-27 23:03:05,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 138 transitions, 404 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 23:03:05,687 INFO L231 Difference]: Finished difference. Result has 123 places, 112 transitions, 244 flow [2024-01-27 23:03:05,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=123, PETRI_TRANSITIONS=112} [2024-01-27 23:03:05,688 INFO L281 CegarLoopForPetriNet]: 131 programPoint places, -8 predicate places. [2024-01-27 23:03:05,688 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 112 transitions, 244 flow [2024-01-27 23:03:05,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 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) [2024-01-27 23:03:05,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:03:05,689 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-01-27 23:03:05,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-27 23:03:05,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:03:05,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:03:05,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1409510938, now seen corresponding path program 1 times [2024-01-27 23:03:05,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:03:05,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475018974] [2024-01-27 23:03:05,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:03:05,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:03:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 23:03:05,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 23:03:05,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 23:03:05,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475018974] [2024-01-27 23:03:05,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475018974] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 23:03:05,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 23:03:05,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 23:03:05,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173618755] [2024-01-27 23:03:05,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 23:03:05,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 23:03:05,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 23:03:05,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 23:03:05,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 23:03:05,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 129 [2024-01-27 23:03:05,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 112 transitions, 244 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) [2024-01-27 23:03:05,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 23:03:05,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 129 [2024-01-27 23:03:05,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 23:03:06,605 INFO L124 PetriNetUnfolderBase]: 3613/10964 cut-off events. [2024-01-27 23:03:06,605 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2024-01-27 23:03:06,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16367 conditions, 10964 events. 3613/10964 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 120269 event pairs, 192 based on Foata normal form. 1350/10622 useless extension candidates. Maximal degree in co-relation 16360. Up to 4555 conditions per place. [2024-01-27 23:03:06,692 INFO L140 encePairwiseOnDemand]: 121/129 looper letters, 52 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2024-01-27 23:03:06,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 135 transitions, 403 flow [2024-01-27 23:03:06,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 23:03:06,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 23:03:06,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 432 transitions. [2024-01-27 23:03:06,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8372093023255814 [2024-01-27 23:03:06,695 INFO L175 Difference]: Start difference. First operand has 123 places, 112 transitions, 244 flow. Second operand 4 states and 432 transitions. [2024-01-27 23:03:06,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 135 transitions, 403 flow [2024-01-27 23:03:06,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 135 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 23:03:06,697 INFO L231 Difference]: Finished difference. Result has 118 places, 106 transitions, 233 flow [2024-01-27 23:03:06,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=233, PETRI_PLACES=118, PETRI_TRANSITIONS=106} [2024-01-27 23:03:06,697 INFO L281 CegarLoopForPetriNet]: 131 programPoint places, -13 predicate places. [2024-01-27 23:03:06,698 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 106 transitions, 233 flow [2024-01-27 23:03:06,698 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) [2024-01-27 23:03:06,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 23:03:06,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 23:03:06,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-27 23:03:06,699 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-01-27 23:03:06,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 23:03:06,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1211123367, now seen corresponding path program 1 times [2024-01-27 23:03:06,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 23:03:06,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415108496] [2024-01-27 23:03:06,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 23:03:06,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 23:03:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 23:03:06,707 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 23:03:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 23:03:06,713 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-27 23:03:06,713 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 23:03:06,713 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 56 remaining) [2024-01-27 23:03:06,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 56 remaining) [2024-01-27 23:03:06,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 56 remaining) [2024-01-27 23:03:06,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 56 remaining) [2024-01-27 23:03:06,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 56 remaining) [2024-01-27 23:03:06,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 56 remaining) [2024-01-27 23:03:06,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 56 remaining) [2024-01-27 23:03:06,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 56 remaining) [2024-01-27 23:03:06,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (47 of 56 remaining) [2024-01-27 23:03:06,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 56 remaining) [2024-01-27 23:03:06,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 56 remaining) [2024-01-27 23:03:06,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 56 remaining) [2024-01-27 23:03:06,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 56 remaining) [2024-01-27 23:03:06,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 56 remaining) [2024-01-27 23:03:06,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 56 remaining) [2024-01-27 23:03:06,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 56 remaining) [2024-01-27 23:03:06,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 56 remaining) [2024-01-27 23:03:06,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 56 remaining) [2024-01-27 23:03:06,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (37 of 56 remaining) [2024-01-27 23:03:06,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 56 remaining) [2024-01-27 23:03:06,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 56 remaining) [2024-01-27 23:03:06,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 56 remaining) [2024-01-27 23:03:06,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 56 remaining) [2024-01-27 23:03:06,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 56 remaining) [2024-01-27 23:03:06,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 56 remaining) [2024-01-27 23:03:06,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 56 remaining) [2024-01-27 23:03:06,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 56 remaining) [2024-01-27 23:03:06,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 56 remaining) [2024-01-27 23:03:06,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 56 remaining) [2024-01-27 23:03:06,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 56 remaining) [2024-01-27 23:03:06,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (25 of 56 remaining) [2024-01-27 23:03:06,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 56 remaining) [2024-01-27 23:03:06,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 56 remaining) [2024-01-27 23:03:06,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 56 remaining) [2024-01-27 23:03:06,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 56 remaining) [2024-01-27 23:03:06,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 56 remaining) [2024-01-27 23:03:06,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 56 remaining) [2024-01-27 23:03:06,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 56 remaining) [2024-01-27 23:03:06,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 56 remaining) [2024-01-27 23:03:06,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 56 remaining) [2024-01-27 23:03:06,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 56 remaining) [2024-01-27 23:03:06,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (14 of 56 remaining) [2024-01-27 23:03:06,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 56 remaining) [2024-01-27 23:03:06,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 56 remaining) [2024-01-27 23:03:06,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 56 remaining) [2024-01-27 23:03:06,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 56 remaining) [2024-01-27 23:03:06,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 56 remaining) [2024-01-27 23:03:06,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 56 remaining) [2024-01-27 23:03:06,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 56 remaining) [2024-01-27 23:03:06,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 56 remaining) [2024-01-27 23:03:06,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 56 remaining) [2024-01-27 23:03:06,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 56 remaining) [2024-01-27 23:03:06,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (3 of 56 remaining) [2024-01-27 23:03:06,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 56 remaining) [2024-01-27 23:03:06,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 56 remaining) [2024-01-27 23:03:06,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 56 remaining) [2024-01-27 23:03:06,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-27 23:03:06,722 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-01-27 23:03:06,726 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2024-01-27 23:03:06,726 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 23:03:06,744 INFO L503 ceAbstractionStarter]: Automizer considered 20 witness invariants [2024-01-27 23:03:06,744 INFO L504 ceAbstractionStarter]: WitnessConsidered=20 [2024-01-27 23:03:06,745 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 11:03:06 BasicIcfg [2024-01-27 23:03:06,745 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 23:03:06,746 INFO L158 Benchmark]: Toolchain (without parser) took 7157.10ms. Allocated memory was 146.8MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 76.7MB in the beginning and 636.5MB in the end (delta: -559.8MB). Peak memory consumption was 515.6MB. Max. memory is 16.1GB. [2024-01-27 23:03:06,746 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 113.2MB. Free memory is still 75.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 23:03:06,746 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 146.8MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 23:03:06,746 INFO L158 Benchmark]: CACSL2BoogieTranslator took 459.21ms. Allocated memory is still 146.8MB. Free memory was 76.5MB in the beginning and 100.4MB in the end (delta: -24.0MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2024-01-27 23:03:06,746 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.06ms. Allocated memory is still 146.8MB. Free memory was 100.4MB in the beginning and 98.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 23:03:06,746 INFO L158 Benchmark]: Boogie Preprocessor took 64.70ms. Allocated memory is still 146.8MB. Free memory was 98.3MB in the beginning and 96.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 23:03:06,747 INFO L158 Benchmark]: RCFGBuilder took 405.55ms. Allocated memory is still 146.8MB. Free memory was 96.2MB in the beginning and 71.8MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-01-27 23:03:06,747 INFO L158 Benchmark]: TraceAbstraction took 6167.10ms. Allocated memory was 146.8MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 71.1MB in the beginning and 636.5MB in the end (delta: -565.4MB). Peak memory consumption was 510.4MB. Max. memory is 16.1GB. [2024-01-27 23:03:06,748 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 113.2MB. Free memory is still 75.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 146.8MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 459.21ms. Allocated memory is still 146.8MB. Free memory was 76.5MB in the beginning and 100.4MB in the end (delta: -24.0MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.06ms. Allocated memory is still 146.8MB. Free memory was 100.4MB in the beginning and 98.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.70ms. Allocated memory is still 146.8MB. Free memory was 98.3MB in the beginning and 96.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 405.55ms. Allocated memory is still 146.8MB. Free memory was 96.2MB in the beginning and 71.8MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 6167.10ms. Allocated memory was 146.8MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 71.1MB in the beginning and 636.5MB in the end (delta: -565.4MB). Peak memory consumption was 510.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 693]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L689] unsigned c = 0; [L699] pthread_t t; VAL [c=0, s={3:0}, t={5:0}] [L700] COND FALSE !(__VERIFIER_nondet_int()) [L701] CALL thr1(0) [L692] CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, c=0, s={3:0}] [L693] CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, c=0, s={3:0}] [L693] CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, c=0, s={3:0}] [L693] CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[c],IntegerLiteral[1U]]]] VAL [arg={0:0}, arg={0:0}, c=0, s={3:0}] - UnprovableResult [Line: 692]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 95 locations, 34 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 96 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 145 IncrementalHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 0 mSDtfsCounter, 145 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 125 locations, 45 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.0s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 168 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 255 IncrementalHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 11 mSDtfsCounter, 255 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 155 locations, 56 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 217 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 155 mSDsluCounter, 68 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 352 IncrementalHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 46 mSDtfsCounter, 352 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=276occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-01-27 23:03:06,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE