./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:24:09,399 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:24:09,525 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-27 23:24:09,537 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:24:09,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:24:09,581 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:24:09,582 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:24:09,583 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:24:09,583 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:24:09,584 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:24:09,584 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:24:09,585 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:24:09,586 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:24:09,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:24:09,586 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:24:09,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:24:09,587 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:24:09,587 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:24:09,588 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:24:09,588 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:24:09,588 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:24:09,588 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:24:09,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:24:09,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:24:09,589 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 23:24:09,589 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:24:09,589 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:24:09,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:24:09,589 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:24:09,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:24:09,590 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:24:09,591 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:24:09,591 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:24:09,591 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:24:09,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:24:09,591 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:24:09,592 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:24:09,592 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:24:09,592 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:24:09,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:24:09,592 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:24:09,592 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:24:09,592 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:24:09,593 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:24:09,593 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:24:09,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:24:09,593 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:24:09,593 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:24:09,593 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:24:09,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:24:09,593 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e [2024-11-27 23:24:10,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:24:10,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:24:10,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:24:10,044 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:24:10,044 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:24:10,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2024-11-27 23:24:13,235 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/data/2074ff763/3624a664ef3c496bbd27efca1ee5a5c7/FLAG5168b58c5 [2024-11-27 23:24:13,868 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:24:13,868 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2024-11-27 23:24:13,905 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/data/2074ff763/3624a664ef3c496bbd27efca1ee5a5c7/FLAG5168b58c5 [2024-11-27 23:24:13,930 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/data/2074ff763/3624a664ef3c496bbd27efca1ee5a5c7 [2024-11-27 23:24:13,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:24:13,934 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:24:13,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:24:13,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:24:13,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:24:13,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:24:13" (1/1) ... [2024-11-27 23:24:13,945 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57c7744e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:13, skipping insertion in model container [2024-11-27 23:24:13,945 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:24:13" (1/1) ... [2024-11-27 23:24:14,009 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:24:15,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:24:15,361 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:24:15,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:24:15,733 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:24:15,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:15 WrapperNode [2024-11-27 23:24:15,734 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:24:15,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:24:15,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:24:15,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:24:15,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:15" (1/1) ... [2024-11-27 23:24:15,787 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:15" (1/1) ... [2024-11-27 23:24:15,819 INFO L138 Inliner]: procedures = 525, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 107 [2024-11-27 23:24:15,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:24:15,824 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:24:15,824 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:24:15,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:24:15,836 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:15" (1/1) ... [2024-11-27 23:24:15,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:15" (1/1) ... [2024-11-27 23:24:15,846 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:15" (1/1) ... [2024-11-27 23:24:15,879 INFO L175 MemorySlicer]: Split 13 memory accesses to 9 slices as follows [5, 1, 1, 1, 1, 1, 1, 1, 1]. 38 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [5, 0, 0, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 1, 1, 1, 1, 1, 1]. [2024-11-27 23:24:15,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:15" (1/1) ... [2024-11-27 23:24:15,880 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:15" (1/1) ... [2024-11-27 23:24:15,896 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:15" (1/1) ... [2024-11-27 23:24:15,897 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:15" (1/1) ... [2024-11-27 23:24:15,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:15" (1/1) ... [2024-11-27 23:24:15,909 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:15" (1/1) ... [2024-11-27 23:24:15,912 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:15" (1/1) ... [2024-11-27 23:24:15,918 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:24:15,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:24:15,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:24:15,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:24:15,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:15" (1/1) ... [2024-11-27 23:24:15,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:24:15,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:15,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:24:15,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:24:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2024-11-27 23:24:16,015 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2024-11-27 23:24:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2024-11-27 23:24:16,016 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2024-11-27 23:24:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-27 23:24:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 23:24:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:24:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:24:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:24:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-11-27 23:24:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-27 23:24:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 23:24:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 23:24:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 23:24:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-27 23:24:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-27 23:24:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-27 23:24:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-27 23:24:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-27 23:24:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-27 23:24:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:24:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 23:24:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 23:24:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 23:24:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 23:24:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-27 23:24:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-27 23:24:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-27 23:24:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-27 23:24:16,023 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 23:24:16,521 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:24:16,524 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:24:17,004 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 23:24:17,004 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:24:17,289 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:24:17,290 INFO L312 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-27 23:24:17,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:24:17 BoogieIcfgContainer [2024-11-27 23:24:17,291 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:24:17,294 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:24:17,294 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:24:17,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:24:17,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:24:13" (1/3) ... [2024-11-27 23:24:17,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4cefb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:24:17, skipping insertion in model container [2024-11-27 23:24:17,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:15" (2/3) ... [2024-11-27 23:24:17,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4cefb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:24:17, skipping insertion in model container [2024-11-27 23:24:17,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:24:17" (3/3) ... [2024-11-27 23:24:17,304 INFO L128 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2024-11-27 23:24:17,318 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:24:17,320 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04-mutex_36-trylock_nr.i that has 3 procedures, 81 locations, 1 initial locations, 11 loop locations, and 10 error locations. [2024-11-27 23:24:17,320 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 23:24:17,416 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 23:24:17,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 111 transitions, 236 flow [2024-11-27 23:24:17,564 INFO L124 PetriNetUnfolderBase]: 31/109 cut-off events. [2024-11-27 23:24:17,570 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 23:24:17,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 109 events. 31/109 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 267 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 85. Up to 5 conditions per place. [2024-11-27 23:24:17,578 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 111 transitions, 236 flow [2024-11-27 23:24:17,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 98 transitions, 205 flow [2024-11-27 23:24:17,594 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:24:17,609 INFO L333 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, 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;@72e178c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:24:17,610 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-27 23:24:17,613 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:24:17,614 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-27 23:24:17,614 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:24:17,614 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:17,615 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-27 23:24:17,615 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 23:24:17,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:17,622 INFO L85 PathProgramCache]: Analyzing trace with hash 631742, now seen corresponding path program 1 times [2024-11-27 23:24:17,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:17,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260310010] [2024-11-27 23:24:17,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:17,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:18,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:18,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260310010] [2024-11-27 23:24:18,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260310010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:18,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:18,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 23:24:18,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125868133] [2024-11-27 23:24:18,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:18,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:24:18,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:18,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:24:18,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:24:18,169 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-27 23:24:18,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 98 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-11-27 23:24:18,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:18,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-27 23:24:18,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:18,707 INFO L124 PetriNetUnfolderBase]: 627/1435 cut-off events. [2024-11-27 23:24:18,707 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-11-27 23:24:18,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2445 conditions, 1435 events. 627/1435 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8963 event pairs, 498 based on Foata normal form. 285/1434 useless extension candidates. Maximal degree in co-relation 2351. Up to 966 conditions per place. [2024-11-27 23:24:18,735 INFO L140 encePairwiseOnDemand]: 93/111 looper letters, 33 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2024-11-27 23:24:18,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 211 flow [2024-11-27 23:24:18,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:24:18,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:24:18,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2024-11-27 23:24:18,758 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5765765765765766 [2024-11-27 23:24:18,761 INFO L175 Difference]: Start difference. First operand has 78 places, 98 transitions, 205 flow. Second operand 3 states and 192 transitions. [2024-11-27 23:24:18,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 211 flow [2024-11-27 23:24:18,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 206 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 23:24:18,777 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 140 flow [2024-11-27 23:24:18,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2024-11-27 23:24:18,788 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2024-11-27 23:24:18,789 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 140 flow [2024-11-27 23:24:18,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-11-27 23:24:18,790 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:18,790 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-27 23:24:18,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:24:18,791 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 23:24:18,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:18,793 INFO L85 PathProgramCache]: Analyzing trace with hash 19584659, now seen corresponding path program 1 times [2024-11-27 23:24:18,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:18,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431462316] [2024-11-27 23:24:18,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:18,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:18,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:18,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:18,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431462316] [2024-11-27 23:24:18,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431462316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:18,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:18,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:24:18,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264244152] [2024-11-27 23:24:18,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:18,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:24:18,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:18,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:24:18,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:24:18,954 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-27 23:24:18,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-11-27 23:24:18,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:18,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-27 23:24:18,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:19,217 INFO L124 PetriNetUnfolderBase]: 627/1434 cut-off events. [2024-11-27 23:24:19,217 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-27 23:24:19,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2431 conditions, 1434 events. 627/1434 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8968 event pairs, 498 based on Foata normal form. 0/1149 useless extension candidates. Maximal degree in co-relation 2425. Up to 965 conditions per place. [2024-11-27 23:24:19,229 INFO L140 encePairwiseOnDemand]: 109/111 looper letters, 33 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2024-11-27 23:24:19,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 206 flow [2024-11-27 23:24:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:24:19,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:24:19,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2024-11-27 23:24:19,232 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5195195195195195 [2024-11-27 23:24:19,232 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 140 flow. Second operand 3 states and 173 transitions. [2024-11-27 23:24:19,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 206 flow [2024-11-27 23:24:19,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:24:19,236 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 139 flow [2024-11-27 23:24:19,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-11-27 23:24:19,238 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2024-11-27 23:24:19,239 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 139 flow [2024-11-27 23:24:19,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-11-27 23:24:19,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:19,240 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:19,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:24:19,240 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 23:24:19,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:19,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1313237703, now seen corresponding path program 1 times [2024-11-27 23:24:19,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:19,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771059241] [2024-11-27 23:24:19,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:19,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:19,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:19,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:19,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771059241] [2024-11-27 23:24:19,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771059241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:19,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:19,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:24:19,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793490207] [2024-11-27 23:24:19,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:19,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:19,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:19,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:19,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:24:19,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-27 23:24:19,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2024-11-27 23:24:19,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:19,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-27 23:24:19,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:20,191 INFO L124 PetriNetUnfolderBase]: 1740/3794 cut-off events. [2024-11-27 23:24:20,191 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-27 23:24:20,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 3794 events. 1740/3794 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 26040 event pairs, 434 based on Foata normal form. 50/3178 useless extension candidates. Maximal degree in co-relation 6643. Up to 1124 conditions per place. [2024-11-27 23:24:20,215 INFO L140 encePairwiseOnDemand]: 104/111 looper letters, 107 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2024-11-27 23:24:20,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 140 transitions, 517 flow [2024-11-27 23:24:20,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:24:20,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:24:20,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 342 transitions. [2024-11-27 23:24:20,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6162162162162163 [2024-11-27 23:24:20,218 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 139 flow. Second operand 5 states and 342 transitions. [2024-11-27 23:24:20,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 140 transitions, 517 flow [2024-11-27 23:24:20,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 140 transitions, 516 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:24:20,222 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 172 flow [2024-11-27 23:24:20,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2024-11-27 23:24:20,223 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -4 predicate places. [2024-11-27 23:24:20,223 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 172 flow [2024-11-27 23:24:20,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2024-11-27 23:24:20,223 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:20,223 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:20,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:24:20,224 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 23:24:20,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:20,224 INFO L85 PathProgramCache]: Analyzing trace with hash 698976764, now seen corresponding path program 1 times [2024-11-27 23:24:20,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:20,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098683437] [2024-11-27 23:24:20,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:20,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:20,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:20,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098683437] [2024-11-27 23:24:20,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098683437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:20,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:20,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:24:20,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141700474] [2024-11-27 23:24:20,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:20,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:20,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:20,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:20,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:24:20,401 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-27 23:24:20,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2024-11-27 23:24:20,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:20,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-27 23:24:20,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:20,975 INFO L124 PetriNetUnfolderBase]: 1759/3801 cut-off events. [2024-11-27 23:24:20,976 INFO L125 PetriNetUnfolderBase]: For 199/225 co-relation queries the response was YES. [2024-11-27 23:24:20,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7191 conditions, 3801 events. 1759/3801 cut-off events. For 199/225 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 25793 event pairs, 1243 based on Foata normal form. 143/3444 useless extension candidates. Maximal degree in co-relation 7182. Up to 2305 conditions per place. [2024-11-27 23:24:20,999 INFO L140 encePairwiseOnDemand]: 105/111 looper letters, 71 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2024-11-27 23:24:21,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 105 transitions, 404 flow [2024-11-27 23:24:21,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:24:21,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:24:21,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2024-11-27 23:24:21,004 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-11-27 23:24:21,005 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 172 flow. Second operand 4 states and 258 transitions. [2024-11-27 23:24:21,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 105 transitions, 404 flow [2024-11-27 23:24:21,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 105 transitions, 404 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:24:21,010 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 202 flow [2024-11-27 23:24:21,010 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2024-11-27 23:24:21,011 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 1 predicate places. [2024-11-27 23:24:21,011 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 202 flow [2024-11-27 23:24:21,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2024-11-27 23:24:21,012 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:21,012 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:21,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:24:21,012 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 23:24:21,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:21,014 INFO L85 PathProgramCache]: Analyzing trace with hash -997830137, now seen corresponding path program 1 times [2024-11-27 23:24:21,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:21,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125098760] [2024-11-27 23:24:21,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:21,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:21,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:21,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125098760] [2024-11-27 23:24:21,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125098760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:21,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:21,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:24:21,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169807967] [2024-11-27 23:24:21,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:21,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:21,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:21,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:21,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:24:21,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-27 23:24:21,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-11-27 23:24:21,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:21,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-27 23:24:21,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:22,437 INFO L124 PetriNetUnfolderBase]: 4209/8910 cut-off events. [2024-11-27 23:24:22,437 INFO L125 PetriNetUnfolderBase]: For 3216/3731 co-relation queries the response was YES. [2024-11-27 23:24:22,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18053 conditions, 8910 events. 4209/8910 cut-off events. For 3216/3731 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 69045 event pairs, 1527 based on Foata normal form. 244/8030 useless extension candidates. Maximal degree in co-relation 18041. Up to 2742 conditions per place. [2024-11-27 23:24:22,527 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 117 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2024-11-27 23:24:22,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 152 transitions, 705 flow [2024-11-27 23:24:22,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:24:22,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:24:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2024-11-27 23:24:22,530 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609009009009009 [2024-11-27 23:24:22,531 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 202 flow. Second operand 5 states and 338 transitions. [2024-11-27 23:24:22,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 152 transitions, 705 flow [2024-11-27 23:24:22,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 152 transitions, 700 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:24:22,550 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 224 flow [2024-11-27 23:24:22,550 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-11-27 23:24:22,551 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-11-27 23:24:22,552 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 224 flow [2024-11-27 23:24:22,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-11-27 23:24:22,553 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:22,553 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:22,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:24:22,553 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 23:24:22,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:22,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1216086534, now seen corresponding path program 1 times [2024-11-27 23:24:22,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:22,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116267219] [2024-11-27 23:24:22,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:22,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:22,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:22,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116267219] [2024-11-27 23:24:22,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116267219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:22,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372823225] [2024-11-27 23:24:22,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:22,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:22,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:22,772 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:22,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:24:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:22,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:24:22,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:23,023 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:23,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372823225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:23,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:23,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 23:24:23,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726462399] [2024-11-27 23:24:23,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:23,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:24:23,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:23,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:24:23,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:24:23,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-27 23:24:23,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 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) [2024-11-27 23:24:23,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:23,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-27 23:24:23,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:24,521 INFO L124 PetriNetUnfolderBase]: 4222/9091 cut-off events. [2024-11-27 23:24:24,521 INFO L125 PetriNetUnfolderBase]: For 3291/3492 co-relation queries the response was YES. [2024-11-27 23:24:24,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18913 conditions, 9091 events. 4222/9091 cut-off events. For 3291/3492 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 71165 event pairs, 827 based on Foata normal form. 403/8552 useless extension candidates. Maximal degree in co-relation 18900. Up to 3273 conditions per place. [2024-11-27 23:24:24,591 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 115 selfloop transitions, 4 changer transitions 0/148 dead transitions. [2024-11-27 23:24:24,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 148 transitions, 662 flow [2024-11-27 23:24:24,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:24:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:24:24,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 378 transitions. [2024-11-27 23:24:24,594 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-11-27 23:24:24,594 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 224 flow. Second operand 6 states and 378 transitions. [2024-11-27 23:24:24,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 148 transitions, 662 flow [2024-11-27 23:24:24,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 148 transitions, 662 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:24:24,611 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 222 flow [2024-11-27 23:24:24,611 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2024-11-27 23:24:24,612 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2024-11-27 23:24:24,614 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 222 flow [2024-11-27 23:24:24,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 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) [2024-11-27 23:24:24,615 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:24,615 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:24,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:24:24,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-27 23:24:24,816 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 23:24:24,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:24,817 INFO L85 PathProgramCache]: Analyzing trace with hash -956022350, now seen corresponding path program 1 times [2024-11-27 23:24:24,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:24,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895199491] [2024-11-27 23:24:24,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:24,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:25,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:25,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895199491] [2024-11-27 23:24:25,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895199491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:25,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788155746] [2024-11-27 23:24:25,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:25,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:25,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:25,004 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:25,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:24:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:25,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:24:25,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:25,227 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:24:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:25,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788155746] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:24:25,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:24:25,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-27 23:24:25,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076216662] [2024-11-27 23:24:25,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:24:25,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 23:24:25,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:25,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 23:24:25,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:24:25,375 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-27 23:24:25,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 222 flow. Second operand has 12 states, 12 states have (on average 48.0) internal successors, (576), 12 states have internal predecessors, (576), 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) [2024-11-27 23:24:25,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:25,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-27 23:24:25,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:27,888 INFO L124 PetriNetUnfolderBase]: 7378/16237 cut-off events. [2024-11-27 23:24:27,889 INFO L125 PetriNetUnfolderBase]: For 7216/7541 co-relation queries the response was YES. [2024-11-27 23:24:27,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34013 conditions, 16237 events. 7378/16237 cut-off events. For 7216/7541 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 139255 event pairs, 827 based on Foata normal form. 742/15392 useless extension candidates. Maximal degree in co-relation 33998. Up to 2517 conditions per place. [2024-11-27 23:24:27,990 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 250 selfloop transitions, 15 changer transitions 0/294 dead transitions. [2024-11-27 23:24:27,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 294 transitions, 1398 flow [2024-11-27 23:24:27,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:24:27,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 23:24:27,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 732 transitions. [2024-11-27 23:24:27,999 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5995085995085995 [2024-11-27 23:24:28,001 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 222 flow. Second operand 11 states and 732 transitions. [2024-11-27 23:24:28,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 294 transitions, 1398 flow [2024-11-27 23:24:28,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 294 transitions, 1391 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 23:24:28,019 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 330 flow [2024-11-27 23:24:28,020 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=330, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2024-11-27 23:24:28,022 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-27 23:24:28,022 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 330 flow [2024-11-27 23:24:28,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 48.0) internal successors, (576), 12 states have internal predecessors, (576), 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) [2024-11-27 23:24:28,023 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:28,023 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:28,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:24:28,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 23:24:28,224 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 23:24:28,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:28,228 INFO L85 PathProgramCache]: Analyzing trace with hash 428078985, now seen corresponding path program 1 times [2024-11-27 23:24:28,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:28,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618555261] [2024-11-27 23:24:28,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:28,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:28,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:28,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:28,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618555261] [2024-11-27 23:24:28,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618555261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:28,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246683224] [2024-11-27 23:24:28,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:28,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:28,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:28,374 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:28,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:24:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:28,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:24:28,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:28,540 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:28,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246683224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:28,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:28,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-27 23:24:28,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167294805] [2024-11-27 23:24:28,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:28,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:24:28,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:28,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:24:28,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:24:28,552 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-27 23:24:28,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 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) [2024-11-27 23:24:28,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:28,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-27 23:24:28,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:30,572 INFO L124 PetriNetUnfolderBase]: 7861/16464 cut-off events. [2024-11-27 23:24:30,572 INFO L125 PetriNetUnfolderBase]: For 11764/12134 co-relation queries the response was YES. [2024-11-27 23:24:30,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37338 conditions, 16464 events. 7861/16464 cut-off events. For 11764/12134 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 135326 event pairs, 776 based on Foata normal form. 219/14852 useless extension candidates. Maximal degree in co-relation 37317. Up to 7995 conditions per place. [2024-11-27 23:24:30,700 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 126 selfloop transitions, 13 changer transitions 0/167 dead transitions. [2024-11-27 23:24:30,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 167 transitions, 870 flow [2024-11-27 23:24:30,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:24:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:24:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 387 transitions. [2024-11-27 23:24:30,703 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-11-27 23:24:30,704 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 330 flow. Second operand 6 states and 387 transitions. [2024-11-27 23:24:30,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 167 transitions, 870 flow [2024-11-27 23:24:30,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 167 transitions, 836 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-27 23:24:30,771 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 330 flow [2024-11-27 23:24:30,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=330, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2024-11-27 23:24:30,772 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-27 23:24:30,772 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 330 flow [2024-11-27 23:24:30,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 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) [2024-11-27 23:24:30,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:30,775 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:30,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:24:30,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-27 23:24:30,980 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting counter_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 23:24:30,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:30,981 INFO L85 PathProgramCache]: Analyzing trace with hash 385547414, now seen corresponding path program 1 times [2024-11-27 23:24:30,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:30,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630423419] [2024-11-27 23:24:30,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:30,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:31,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:24:31,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:31,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630423419] [2024-11-27 23:24:31,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630423419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:31,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:31,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:24:31,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606112452] [2024-11-27 23:24:31,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:31,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:24:31,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:31,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:24:31,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:24:31,123 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-27 23:24:31,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2024-11-27 23:24:31,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:31,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-27 23:24:31,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:33,044 INFO L124 PetriNetUnfolderBase]: 7681/16175 cut-off events. [2024-11-27 23:24:33,044 INFO L125 PetriNetUnfolderBase]: For 13519/13789 co-relation queries the response was YES. [2024-11-27 23:24:33,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36721 conditions, 16175 events. 7681/16175 cut-off events. For 13519/13789 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 135461 event pairs, 4904 based on Foata normal form. 237/14746 useless extension candidates. Maximal degree in co-relation 36701. Up to 8680 conditions per place. [2024-11-27 23:24:33,116 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 76 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2024-11-27 23:24:33,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 121 transitions, 643 flow [2024-11-27 23:24:33,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:24:33,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:24:33,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2024-11-27 23:24:33,118 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-11-27 23:24:33,118 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 330 flow. Second operand 4 states and 252 transitions. [2024-11-27 23:24:33,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 121 transitions, 643 flow [2024-11-27 23:24:33,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 121 transitions, 622 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-27 23:24:33,163 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 378 flow [2024-11-27 23:24:33,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=378, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2024-11-27 23:24:33,164 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-27 23:24:33,164 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 378 flow [2024-11-27 23:24:33,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2024-11-27 23:24:33,165 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:33,165 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:33,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:24:33,165 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 23:24:33,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:33,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1410598508, now seen corresponding path program 1 times [2024-11-27 23:24:33,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:33,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429191288] [2024-11-27 23:24:33,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:33,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:33,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:33,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429191288] [2024-11-27 23:24:33,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429191288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:33,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504490799] [2024-11-27 23:24:33,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:33,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:33,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:33,354 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:33,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:24:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:33,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:24:33,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:33,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:33,532 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:24:33,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504490799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:33,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:24:33,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-27 23:24:33,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468956526] [2024-11-27 23:24:33,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:33,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:24:33,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:33,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:24:33,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:24:33,546 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-27 23:24:33,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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) [2024-11-27 23:24:33,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:33,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-27 23:24:33,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:35,259 INFO L124 PetriNetUnfolderBase]: 7598/15430 cut-off events. [2024-11-27 23:24:35,260 INFO L125 PetriNetUnfolderBase]: For 18644/19399 co-relation queries the response was YES. [2024-11-27 23:24:35,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36152 conditions, 15430 events. 7598/15430 cut-off events. For 18644/19399 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 124665 event pairs, 309 based on Foata normal form. 692/14301 useless extension candidates. Maximal degree in co-relation 36132. Up to 4193 conditions per place. [2024-11-27 23:24:35,343 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 196 selfloop transitions, 4 changer transitions 0/228 dead transitions. [2024-11-27 23:24:35,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 228 transitions, 1666 flow [2024-11-27 23:24:35,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:24:35,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:24:35,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 398 transitions. [2024-11-27 23:24:35,346 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5975975975975976 [2024-11-27 23:24:35,346 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 378 flow. Second operand 6 states and 398 transitions. [2024-11-27 23:24:35,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 228 transitions, 1666 flow [2024-11-27 23:24:35,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 228 transitions, 1544 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 23:24:35,369 INFO L231 Difference]: Finished difference. Result has 100 places, 82 transitions, 356 flow [2024-11-27 23:24:35,369 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=100, PETRI_TRANSITIONS=82} [2024-11-27 23:24:35,370 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2024-11-27 23:24:35,370 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 82 transitions, 356 flow [2024-11-27 23:24:35,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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) [2024-11-27 23:24:35,371 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:35,371 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:35,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:24:35,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:35,572 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 23:24:35,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:35,572 INFO L85 PathProgramCache]: Analyzing trace with hash -778880064, now seen corresponding path program 1 times [2024-11-27 23:24:35,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:35,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40946645] [2024-11-27 23:24:35,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:35,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:35,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:35,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:35,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40946645] [2024-11-27 23:24:35,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40946645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:35,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843838887] [2024-11-27 23:24:35,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:35,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:35,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:35,760 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:35,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:24:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:35,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:24:35,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:35,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:24:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:36,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843838887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:24:36,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:24:36,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-27 23:24:36,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435288621] [2024-11-27 23:24:36,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:24:36,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 23:24:36,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:36,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 23:24:36,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:24:36,096 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-27 23:24:36,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 82 transitions, 356 flow. Second operand has 12 states, 12 states have (on average 50.25) internal successors, (603), 12 states have internal predecessors, (603), 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) [2024-11-27 23:24:36,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:36,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-27 23:24:36,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:38,863 INFO L124 PetriNetUnfolderBase]: 12595/25565 cut-off events. [2024-11-27 23:24:38,863 INFO L125 PetriNetUnfolderBase]: For 24251/25520 co-relation queries the response was YES. [2024-11-27 23:24:38,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58652 conditions, 25565 events. 12595/25565 cut-off events. For 24251/25520 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 218064 event pairs, 662 based on Foata normal form. 941/23614 useless extension candidates. Maximal degree in co-relation 58631. Up to 3648 conditions per place. [2024-11-27 23:24:39,216 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 372 selfloop transitions, 11 changer transitions 0/411 dead transitions. [2024-11-27 23:24:39,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 411 transitions, 2924 flow [2024-11-27 23:24:39,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:24:39,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 23:24:39,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 733 transitions. [2024-11-27 23:24:39,220 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6003276003276004 [2024-11-27 23:24:39,220 INFO L175 Difference]: Start difference. First operand has 100 places, 82 transitions, 356 flow. Second operand 11 states and 733 transitions. [2024-11-27 23:24:39,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 411 transitions, 2924 flow [2024-11-27 23:24:39,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 411 transitions, 2917 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 23:24:39,256 INFO L231 Difference]: Finished difference. Result has 109 places, 87 transitions, 403 flow [2024-11-27 23:24:39,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=403, PETRI_PLACES=109, PETRI_TRANSITIONS=87} [2024-11-27 23:24:39,257 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 31 predicate places. [2024-11-27 23:24:39,257 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 87 transitions, 403 flow [2024-11-27 23:24:39,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.25) internal successors, (603), 12 states have internal predecessors, (603), 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) [2024-11-27 23:24:39,258 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:39,258 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:39,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 23:24:39,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:39,463 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 23:24:39,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:39,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1830278303, now seen corresponding path program 2 times [2024-11-27 23:24:39,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:39,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708650407] [2024-11-27 23:24:39,464 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:24:39,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:39,489 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:24:39,489 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:39,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:39,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708650407] [2024-11-27 23:24:39,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708650407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:39,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788357856] [2024-11-27 23:24:39,868 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:24:39,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:39,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:39,873 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:39,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:24:39,998 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:24:39,998 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:40,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 23:24:40,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:40,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:24:40,319 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:40,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788357856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:24:40,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:24:40,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-27 23:24:40,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846710880] [2024-11-27 23:24:40,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:24:40,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 23:24:40,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:40,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 23:24:40,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:24:40,379 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-27 23:24:40,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 87 transitions, 403 flow. Second operand has 24 states, 24 states have (on average 47.25) internal successors, (1134), 24 states have internal predecessors, (1134), 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) [2024-11-27 23:24:40,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:40,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-27 23:24:40,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:48,423 INFO L124 PetriNetUnfolderBase]: 27757/59703 cut-off events. [2024-11-27 23:24:48,424 INFO L125 PetriNetUnfolderBase]: For 97443/97864 co-relation queries the response was YES. [2024-11-27 23:24:48,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139945 conditions, 59703 events. 27757/59703 cut-off events. For 97443/97864 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 576273 event pairs, 1398 based on Foata normal form. 2377/56175 useless extension candidates. Maximal degree in co-relation 139921. Up to 8480 conditions per place. [2024-11-27 23:24:48,711 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 660 selfloop transitions, 43 changer transitions 0/730 dead transitions. [2024-11-27 23:24:48,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 730 transitions, 4500 flow [2024-11-27 23:24:48,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 23:24:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-27 23:24:48,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1551 transitions. [2024-11-27 23:24:48,717 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6075205640423031 [2024-11-27 23:24:48,718 INFO L175 Difference]: Start difference. First operand has 109 places, 87 transitions, 403 flow. Second operand 23 states and 1551 transitions. [2024-11-27 23:24:48,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 730 transitions, 4500 flow [2024-11-27 23:24:48,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 730 transitions, 4060 flow, removed 132 selfloop flow, removed 4 redundant places. [2024-11-27 23:24:48,801 INFO L231 Difference]: Finished difference. Result has 139 places, 111 transitions, 739 flow [2024-11-27 23:24:48,801 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=739, PETRI_PLACES=139, PETRI_TRANSITIONS=111} [2024-11-27 23:24:48,802 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 61 predicate places. [2024-11-27 23:24:48,802 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 111 transitions, 739 flow [2024-11-27 23:24:48,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 47.25) internal successors, (1134), 24 states have internal predecessors, (1134), 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) [2024-11-27 23:24:48,803 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:48,803 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:48,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 23:24:49,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:49,004 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 23:24:49,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:49,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1326547693, now seen corresponding path program 2 times [2024-11-27 23:24:49,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:49,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901538470] [2024-11-27 23:24:49,004 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:24:49,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:49,046 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:24:49,046 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:49,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:49,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901538470] [2024-11-27 23:24:49,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901538470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:49,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471151097] [2024-11-27 23:24:49,451 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:24:49,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:49,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:49,453 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:49,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:24:49,580 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:24:49,580 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:49,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 23:24:49,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:49,682 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:49,682 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:24:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:49,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471151097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:24:49,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:24:49,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-27 23:24:49,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799602164] [2024-11-27 23:24:49,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:24:49,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 23:24:49,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:49,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 23:24:49,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:24:49,936 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-27 23:24:49,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 111 transitions, 739 flow. Second operand has 24 states, 24 states have (on average 50.125) internal successors, (1203), 24 states have internal predecessors, (1203), 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) [2024-11-27 23:24:49,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:49,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-27 23:24:49,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:25:08,974 INFO L124 PetriNetUnfolderBase]: 62365/125369 cut-off events. [2024-11-27 23:25:08,974 INFO L125 PetriNetUnfolderBase]: For 257443/263668 co-relation queries the response was YES. [2024-11-27 23:25:09,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304866 conditions, 125369 events. 62365/125369 cut-off events. For 257443/263668 co-relation queries the response was YES. Maximal size of possible extension queue 1046. Compared 1229169 event pairs, 1538 based on Foata normal form. 6803/118938 useless extension candidates. Maximal degree in co-relation 304829. Up to 18204 conditions per place. [2024-11-27 23:25:09,979 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 1338 selfloop transitions, 23 changer transitions 0/1389 dead transitions. [2024-11-27 23:25:09,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 1389 transitions, 14369 flow [2024-11-27 23:25:09,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 23:25:09,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-27 23:25:09,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1546 transitions. [2024-11-27 23:25:09,985 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6055620838229534 [2024-11-27 23:25:09,986 INFO L175 Difference]: Start difference. First operand has 139 places, 111 transitions, 739 flow. Second operand 23 states and 1546 transitions. [2024-11-27 23:25:09,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 1389 transitions, 14369 flow [2024-11-27 23:25:10,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 1389 transitions, 11991 flow, removed 264 selfloop flow, removed 10 redundant places. [2024-11-27 23:25:10,315 INFO L231 Difference]: Finished difference. Result has 157 places, 123 transitions, 759 flow [2024-11-27 23:25:10,316 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=759, PETRI_PLACES=157, PETRI_TRANSITIONS=123} [2024-11-27 23:25:10,316 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 79 predicate places. [2024-11-27 23:25:10,317 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 123 transitions, 759 flow [2024-11-27 23:25:10,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 50.125) internal successors, (1203), 24 states have internal predecessors, (1203), 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) [2024-11-27 23:25:10,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:25:10,317 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:10,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 23:25:10,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 23:25:10,518 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 23:25:10,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:10,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1547575233, now seen corresponding path program 3 times [2024-11-27 23:25:10,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:10,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878148852] [2024-11-27 23:25:10,519 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:25:10,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:10,601 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-27 23:25:10,602 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:25:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:11,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:11,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878148852] [2024-11-27 23:25:11,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878148852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:11,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372341326] [2024-11-27 23:25:11,840 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:25:11,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:11,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:11,842 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:11,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae0b0fee-b9ad-4848-b8b0-d1a771897e76/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:25:11,994 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-27 23:25:11,994 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:25:12,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-27 23:25:12,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:12,154 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:12,154 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:25:12,918 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:12,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372341326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:25:12,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:25:12,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 46 [2024-11-27 23:25:12,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830884596] [2024-11-27 23:25:12,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:25:12,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-27 23:25:12,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:12,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-27 23:25:12,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2024-11-27 23:25:13,040 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-27 23:25:13,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 123 transitions, 759 flow. Second operand has 48 states, 48 states have (on average 46.875) internal successors, (2250), 48 states have internal predecessors, (2250), 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) [2024-11-27 23:25:13,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:25:13,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-27 23:25:13,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand