./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c --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_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/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_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/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_090774e9-e069-443c-a11d-194ac3e1d836/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 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:02:56,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:02:56,702 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 03:02:56,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:02:56,707 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:02:56,736 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:02:56,737 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:02:56,737 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:02:56,737 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:02:56,737 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:02:56,737 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:02:56,737 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:02:56,738 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:02:56,738 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:02:56,738 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:02:56,738 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:02:56,738 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:02:56,738 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:02:56,738 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:02:56,738 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:02:56,738 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:02:56,739 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:02:56,739 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:02:56,739 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:02:56,739 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 03:02:56,739 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:02:56,739 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:02:56,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:02:56,739 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:02:56,739 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:02:56,739 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:02:56,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:02:56,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:02:56,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:02:56,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:02:56,740 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:02:56,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:02:56,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:02:56,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:02:56,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:02:56,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:02:56,741 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:02:56,741 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:02:56,741 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:02:56,741 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:02:56,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:02:56,741 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:02:56,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:02:56,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:02:56,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:02:56,742 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_090774e9-e069-443c-a11d-194ac3e1d836/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 -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2024-11-28 03:02:57,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:02:57,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:02:57,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:02:57,056 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:02:57,057 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:02:57,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-11-28 03:03:00,308 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/data/1e7135617/cc99e45bf56046e180a7ab1093d48e86/FLAGa8258fb4c [2024-11-28 03:03:00,557 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:03:00,558 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-11-28 03:03:00,566 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/data/1e7135617/cc99e45bf56046e180a7ab1093d48e86/FLAGa8258fb4c [2024-11-28 03:03:00,581 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/data/1e7135617/cc99e45bf56046e180a7ab1093d48e86 [2024-11-28 03:03:00,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:03:00,586 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:03:00,587 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:03:00,587 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:03:00,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:03:00,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:00" (1/1) ... [2024-11-28 03:03:00,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ccad6f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:00, skipping insertion in model container [2024-11-28 03:03:00,594 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:00" (1/1) ... [2024-11-28 03:03:00,612 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:03:00,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:03:00,826 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:03:00,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:03:00,875 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:03:00,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:00 WrapperNode [2024-11-28 03:03:00,875 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:03:00,877 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:03:00,877 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:03:00,877 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:03:00,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:00" (1/1) ... [2024-11-28 03:03:00,893 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:00" (1/1) ... [2024-11-28 03:03:00,917 INFO L138 Inliner]: procedures = 21, calls = 31, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 151 [2024-11-28 03:03:00,918 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:03:00,918 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:03:00,918 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:03:00,919 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:03:00,928 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:00" (1/1) ... [2024-11-28 03:03:00,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:00" (1/1) ... [2024-11-28 03:03:00,930 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:00" (1/1) ... [2024-11-28 03:03:00,950 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:03:00,950 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:00" (1/1) ... [2024-11-28 03:03:00,950 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:00" (1/1) ... [2024-11-28 03:03:00,955 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:00" (1/1) ... [2024-11-28 03:03:00,956 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:00" (1/1) ... [2024-11-28 03:03:00,959 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:00" (1/1) ... [2024-11-28 03:03:00,961 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:00" (1/1) ... [2024-11-28 03:03:00,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:00" (1/1) ... [2024-11-28 03:03:00,967 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:03:00,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:03:00,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:03:00,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:03:00,969 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:00" (1/1) ... [2024-11-28 03:03:00,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:03:00,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:01,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:03:01,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:03:01,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:03:01,044 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 03:03:01,044 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 03:03:01,044 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 03:03:01,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 03:03:01,045 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 03:03:01,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 03:03:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:03:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 03:03:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 03:03:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:03:01,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:03:01,048 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:03:01,153 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:03:01,156 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:03:01,567 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:03:01,568 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:03:01,963 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:03:01,965 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:03:01,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:01 BoogieIcfgContainer [2024-11-28 03:03:01,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:03:01,969 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:03:01,969 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:03:01,974 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:03:01,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:03:00" (1/3) ... [2024-11-28 03:03:01,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5d0573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:01, skipping insertion in model container [2024-11-28 03:03:01,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:00" (2/3) ... [2024-11-28 03:03:01,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5d0573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:01, skipping insertion in model container [2024-11-28 03:03:01,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:01" (3/3) ... [2024-11-28 03:03:01,977 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2024-11-28 03:03:01,992 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:03:01,994 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-5.wvr.c that has 4 procedures, 48 locations, 1 initial locations, 2 loop locations, and 16 error locations. [2024-11-28 03:03:01,994 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:03:02,071 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 03:03:02,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 51 transitions, 123 flow [2024-11-28 03:03:02,144 INFO L124 PetriNetUnfolderBase]: 4/48 cut-off events. [2024-11-28 03:03:02,146 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 03:03:02,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 4/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 184 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-11-28 03:03:02,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 51 transitions, 123 flow [2024-11-28 03:03:02,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 45 transitions, 102 flow [2024-11-28 03:03:02,162 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:03:02,174 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;@6e4e7f8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:03:02,175 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-11-28 03:03:02,189 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:03:02,189 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-11-28 03:03:02,189 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 03:03:02,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:03:02,190 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:02,190 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-28 03:03:02,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:02,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2002882150, now seen corresponding path program 1 times [2024-11-28 03:03:02,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:02,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215211916] [2024-11-28 03:03:02,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:02,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:02,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:02,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215211916] [2024-11-28 03:03:02,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215211916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:02,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:02,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:03:02,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226730062] [2024-11-28 03:03:02,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:02,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:02,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:02,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:02,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:03:02,534 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-28 03:03:02,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-11-28 03:03:02,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:03:02,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-28 03:03:02,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:03:03,682 INFO L124 PetriNetUnfolderBase]: 3956/5895 cut-off events. [2024-11-28 03:03:03,682 INFO L125 PetriNetUnfolderBase]: For 394/394 co-relation queries the response was YES. [2024-11-28 03:03:03,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12203 conditions, 5895 events. 3956/5895 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 35769 event pairs, 1289 based on Foata normal form. 0/3272 useless extension candidates. Maximal degree in co-relation 11894. Up to 3272 conditions per place. [2024-11-28 03:03:03,742 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 55 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-11-28 03:03:03,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 72 transitions, 293 flow [2024-11-28 03:03:03,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:03,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:03:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-28 03:03:03,777 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2024-11-28 03:03:03,780 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 102 flow. Second operand 3 states and 105 transitions. [2024-11-28 03:03:03,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 72 transitions, 293 flow [2024-11-28 03:03:03,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 72 transitions, 283 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 03:03:03,798 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 168 flow [2024-11-28 03:03:03,801 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2024-11-28 03:03:03,806 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2024-11-28 03:03:03,808 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 168 flow [2024-11-28 03:03:03,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-11-28 03:03:03,809 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:03:03,809 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:03,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:03:03,810 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-28 03:03:03,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:03,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2002882149, now seen corresponding path program 1 times [2024-11-28 03:03:03,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:03,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431198088] [2024-11-28 03:03:03,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:03,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:03,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:03,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431198088] [2024-11-28 03:03:03,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431198088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:03,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:03,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:03:03,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703622537] [2024-11-28 03:03:03,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:03,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:03,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:03,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:03,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:03:03,990 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-28 03:03:03,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-11-28 03:03:03,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:03:03,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-28 03:03:03,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:03:05,188 INFO L124 PetriNetUnfolderBase]: 5902/8593 cut-off events. [2024-11-28 03:03:05,189 INFO L125 PetriNetUnfolderBase]: For 1474/1474 co-relation queries the response was YES. [2024-11-28 03:03:05,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20433 conditions, 8593 events. 5902/8593 cut-off events. For 1474/1474 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 51567 event pairs, 1257 based on Foata normal form. 352/5988 useless extension candidates. Maximal degree in co-relation 17394. Up to 5702 conditions per place. [2024-11-28 03:03:05,250 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 65 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2024-11-28 03:03:05,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 84 transitions, 423 flow [2024-11-28 03:03:05,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:05,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:03:05,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-28 03:03:05,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6601307189542484 [2024-11-28 03:03:05,256 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 168 flow. Second operand 3 states and 101 transitions. [2024-11-28 03:03:05,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 84 transitions, 423 flow [2024-11-28 03:03:05,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:03:05,318 INFO L231 Difference]: Finished difference. Result has 51 places, 61 transitions, 258 flow [2024-11-28 03:03:05,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=51, PETRI_TRANSITIONS=61} [2024-11-28 03:03:05,320 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-11-28 03:03:05,320 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 61 transitions, 258 flow [2024-11-28 03:03:05,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-11-28 03:03:05,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:03:05,320 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:05,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:03:05,321 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-28 03:03:05,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:05,322 INFO L85 PathProgramCache]: Analyzing trace with hash -2002882148, now seen corresponding path program 1 times [2024-11-28 03:03:05,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:05,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612730727] [2024-11-28 03:03:05,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:05,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:05,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:05,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612730727] [2024-11-28 03:03:05,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612730727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:05,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:05,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:03:05,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540171121] [2024-11-28 03:03:05,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:05,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:05,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:05,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:05,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:03:05,449 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-28 03:03:05,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 61 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-11-28 03:03:05,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:03:05,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-28 03:03:05,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:03:06,376 INFO L124 PetriNetUnfolderBase]: 5504/8007 cut-off events. [2024-11-28 03:03:06,376 INFO L125 PetriNetUnfolderBase]: For 2242/2242 co-relation queries the response was YES. [2024-11-28 03:03:06,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21425 conditions, 8007 events. 5504/8007 cut-off events. For 2242/2242 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 48103 event pairs, 3350 based on Foata normal form. 0/5612 useless extension candidates. Maximal degree in co-relation 18550. Up to 7741 conditions per place. [2024-11-28 03:03:06,439 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 50 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2024-11-28 03:03:06,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 350 flow [2024-11-28 03:03:06,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:06,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:03:06,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-11-28 03:03:06,441 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-28 03:03:06,441 INFO L175 Difference]: Start difference. First operand has 51 places, 61 transitions, 258 flow. Second operand 3 states and 68 transitions. [2024-11-28 03:03:06,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 350 flow [2024-11-28 03:03:06,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:03:06,471 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 230 flow [2024-11-28 03:03:06,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2024-11-28 03:03:06,473 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2024-11-28 03:03:06,473 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 230 flow [2024-11-28 03:03:06,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-11-28 03:03:06,474 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:03:06,474 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:06,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:03:06,474 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-28 03:03:06,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:06,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2002882147, now seen corresponding path program 1 times [2024-11-28 03:03:06,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:06,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11802196] [2024-11-28 03:03:06,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:06,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:06,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:06,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:06,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11802196] [2024-11-28 03:03:06,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11802196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:06,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:06,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:03:06,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362535105] [2024-11-28 03:03:06,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:06,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:06,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:06,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:06,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:03:06,630 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-28 03:03:06,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-11-28 03:03:06,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:03:06,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-28 03:03:06,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:03:07,647 INFO L124 PetriNetUnfolderBase]: 6338/9493 cut-off events. [2024-11-28 03:03:07,648 INFO L125 PetriNetUnfolderBase]: For 1946/1946 co-relation queries the response was YES. [2024-11-28 03:03:07,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24619 conditions, 9493 events. 6338/9493 cut-off events. For 1946/1946 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 60399 event pairs, 2385 based on Foata normal form. 332/6854 useless extension candidates. Maximal degree in co-relation 24609. Up to 5324 conditions per place. [2024-11-28 03:03:07,703 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 87 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-11-28 03:03:07,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 98 transitions, 565 flow [2024-11-28 03:03:07,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:07,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:03:07,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-11-28 03:03:07,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-11-28 03:03:07,708 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 230 flow. Second operand 3 states and 99 transitions. [2024-11-28 03:03:07,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 98 transitions, 565 flow [2024-11-28 03:03:07,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 98 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:03:07,713 INFO L231 Difference]: Finished difference. Result has 52 places, 61 transitions, 270 flow [2024-11-28 03:03:07,714 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=52, PETRI_TRANSITIONS=61} [2024-11-28 03:03:07,715 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2024-11-28 03:03:07,715 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 61 transitions, 270 flow [2024-11-28 03:03:07,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-11-28 03:03:07,715 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:03:07,715 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:07,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:03:07,715 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-28 03:03:07,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:07,717 INFO L85 PathProgramCache]: Analyzing trace with hash -894013937, now seen corresponding path program 1 times [2024-11-28 03:03:07,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:07,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58850776] [2024-11-28 03:03:07,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:07,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:07,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:07,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:07,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58850776] [2024-11-28 03:03:07,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58850776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:07,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:07,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:03:07,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922518116] [2024-11-28 03:03:07,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:07,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:07,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:07,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:07,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:03:07,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-28 03:03:07,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 61 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-11-28 03:03:07,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:03:07,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-28 03:03:07,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:03:09,014 INFO L124 PetriNetUnfolderBase]: 7046/10659 cut-off events. [2024-11-28 03:03:09,014 INFO L125 PetriNetUnfolderBase]: For 3196/3196 co-relation queries the response was YES. [2024-11-28 03:03:09,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29377 conditions, 10659 events. 7046/10659 cut-off events. For 3196/3196 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 69490 event pairs, 1998 based on Foata normal form. 244/7597 useless extension candidates. Maximal degree in co-relation 29365. Up to 6755 conditions per place. [2024-11-28 03:03:09,091 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 87 selfloop transitions, 5 changer transitions 0/100 dead transitions. [2024-11-28 03:03:09,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 100 transitions, 641 flow [2024-11-28 03:03:09,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:09,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:03:09,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-11-28 03:03:09,092 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6339869281045751 [2024-11-28 03:03:09,092 INFO L175 Difference]: Start difference. First operand has 52 places, 61 transitions, 270 flow. Second operand 3 states and 97 transitions. [2024-11-28 03:03:09,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 100 transitions, 641 flow [2024-11-28 03:03:09,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 100 transitions, 636 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:03:09,097 INFO L231 Difference]: Finished difference. Result has 55 places, 65 transitions, 331 flow [2024-11-28 03:03:09,097 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=55, PETRI_TRANSITIONS=65} [2024-11-28 03:03:09,098 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-11-28 03:03:09,098 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 65 transitions, 331 flow [2024-11-28 03:03:09,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-11-28 03:03:09,098 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:03:09,099 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:09,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:03:09,099 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-28 03:03:09,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:09,100 INFO L85 PathProgramCache]: Analyzing trace with hash -894013938, now seen corresponding path program 1 times [2024-11-28 03:03:09,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:09,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820022384] [2024-11-28 03:03:09,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:09,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:09,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:09,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820022384] [2024-11-28 03:03:09,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820022384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:09,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:09,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:03:09,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341977809] [2024-11-28 03:03:09,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:09,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:09,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:09,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:09,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:03:09,188 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-28 03:03:09,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 65 transitions, 331 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-11-28 03:03:09,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:03:09,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-28 03:03:09,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:03:10,152 INFO L124 PetriNetUnfolderBase]: 6476/9869 cut-off events. [2024-11-28 03:03:10,153 INFO L125 PetriNetUnfolderBase]: For 5134/5134 co-relation queries the response was YES. [2024-11-28 03:03:10,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28462 conditions, 9869 events. 6476/9869 cut-off events. For 5134/5134 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 65281 event pairs, 4876 based on Foata normal form. 356/7365 useless extension candidates. Maximal degree in co-relation 28447. Up to 9563 conditions per place. [2024-11-28 03:03:10,334 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 52 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2024-11-28 03:03:10,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 61 transitions, 409 flow [2024-11-28 03:03:10,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:10,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:03:10,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-11-28 03:03:10,336 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43790849673202614 [2024-11-28 03:03:10,337 INFO L175 Difference]: Start difference. First operand has 55 places, 65 transitions, 331 flow. Second operand 3 states and 67 transitions. [2024-11-28 03:03:10,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 61 transitions, 409 flow [2024-11-28 03:03:10,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 403 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:03:10,340 INFO L231 Difference]: Finished difference. Result has 54 places, 61 transitions, 299 flow [2024-11-28 03:03:10,341 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=54, PETRI_TRANSITIONS=61} [2024-11-28 03:03:10,343 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2024-11-28 03:03:10,344 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 61 transitions, 299 flow [2024-11-28 03:03:10,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-11-28 03:03:10,344 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:03:10,344 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:10,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:03:10,344 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-28 03:03:10,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:10,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1266516435, now seen corresponding path program 1 times [2024-11-28 03:03:10,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:10,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094860779] [2024-11-28 03:03:10,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:10,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:10,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:10,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:10,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094860779] [2024-11-28 03:03:10,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094860779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:10,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076720572] [2024-11-28 03:03:10,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:10,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:10,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:10,457 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:10,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:03:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:10,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:03:10,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:10,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:10,612 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:10,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076720572] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:03:10,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:03:10,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-28 03:03:10,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911013070] [2024-11-28 03:03:10,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:03:10,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:03:10,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:10,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:03:10,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:03:10,674 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-28 03:03:10,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 61 transitions, 299 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 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) [2024-11-28 03:03:10,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:03:10,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-28 03:03:10,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:03:12,956 INFO L124 PetriNetUnfolderBase]: 19566/29017 cut-off events. [2024-11-28 03:03:12,956 INFO L125 PetriNetUnfolderBase]: For 14298/14298 co-relation queries the response was YES. [2024-11-28 03:03:13,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81518 conditions, 29017 events. 19566/29017 cut-off events. For 14298/14298 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 200467 event pairs, 762 based on Foata normal form. 866/21714 useless extension candidates. Maximal degree in co-relation 81503. Up to 8318 conditions per place. [2024-11-28 03:03:13,126 INFO L140 encePairwiseOnDemand]: 34/51 looper letters, 133 selfloop transitions, 65 changer transitions 0/206 dead transitions. [2024-11-28 03:03:13,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 206 transitions, 1306 flow [2024-11-28 03:03:13,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:03:13,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:03:13,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 251 transitions. [2024-11-28 03:03:13,132 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7030812324929971 [2024-11-28 03:03:13,132 INFO L175 Difference]: Start difference. First operand has 54 places, 61 transitions, 299 flow. Second operand 7 states and 251 transitions. [2024-11-28 03:03:13,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 206 transitions, 1306 flow [2024-11-28 03:03:13,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 206 transitions, 1305 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:03:13,139 INFO L231 Difference]: Finished difference. Result has 63 places, 119 transitions, 1016 flow [2024-11-28 03:03:13,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1016, PETRI_PLACES=63, PETRI_TRANSITIONS=119} [2024-11-28 03:03:13,140 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2024-11-28 03:03:13,141 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 119 transitions, 1016 flow [2024-11-28 03:03:13,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 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) [2024-11-28 03:03:13,141 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:03:13,141 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:13,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:03:13,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:13,342 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-28 03:03:13,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:13,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1266516437, now seen corresponding path program 1 times [2024-11-28 03:03:13,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:13,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213831833] [2024-11-28 03:03:13,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:13,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:13,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:13,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213831833] [2024-11-28 03:03:13,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213831833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:13,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983691177] [2024-11-28 03:03:13,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:13,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:13,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:13,465 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:13,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:03:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:13,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:03:13,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:13,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:13,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:13,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983691177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:03:13,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:03:13,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-28 03:03:13,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139568843] [2024-11-28 03:03:13,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:03:13,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:03:13,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:13,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:03:13,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:03:13,811 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-28 03:03:13,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 119 transitions, 1016 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 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) [2024-11-28 03:03:13,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:03:13,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-28 03:03:13,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:03:19,376 INFO L124 PetriNetUnfolderBase]: 44700/66413 cut-off events. [2024-11-28 03:03:19,376 INFO L125 PetriNetUnfolderBase]: For 148418/148418 co-relation queries the response was YES. [2024-11-28 03:03:19,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235779 conditions, 66413 events. 44700/66413 cut-off events. For 148418/148418 co-relation queries the response was YES. Maximal size of possible extension queue 2514. Compared 503451 event pairs, 2756 based on Foata normal form. 634/50942 useless extension candidates. Maximal degree in co-relation 235759. Up to 15834 conditions per place. [2024-11-28 03:03:19,701 INFO L140 encePairwiseOnDemand]: 34/51 looper letters, 380 selfloop transitions, 154 changer transitions 0/542 dead transitions. [2024-11-28 03:03:19,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 542 transitions, 5459 flow [2024-11-28 03:03:19,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:03:19,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 03:03:19,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 367 transitions. [2024-11-28 03:03:19,853 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7196078431372549 [2024-11-28 03:03:19,853 INFO L175 Difference]: Start difference. First operand has 63 places, 119 transitions, 1016 flow. Second operand 10 states and 367 transitions. [2024-11-28 03:03:19,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 542 transitions, 5459 flow [2024-11-28 03:03:21,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 542 transitions, 5301 flow, removed 79 selfloop flow, removed 0 redundant places. [2024-11-28 03:03:21,617 INFO L231 Difference]: Finished difference. Result has 80 places, 256 transitions, 3203 flow [2024-11-28 03:03:21,618 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3203, PETRI_PLACES=80, PETRI_TRANSITIONS=256} [2024-11-28 03:03:21,618 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 29 predicate places. [2024-11-28 03:03:21,618 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 256 transitions, 3203 flow [2024-11-28 03:03:21,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 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) [2024-11-28 03:03:21,619 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:03:21,619 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:21,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:03:21,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:21,823 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-28 03:03:21,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:21,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1887047289, now seen corresponding path program 1 times [2024-11-28 03:03:21,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:21,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734532341] [2024-11-28 03:03:21,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:21,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:21,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:21,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:21,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734532341] [2024-11-28 03:03:21,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734532341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:21,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154993783] [2024-11-28 03:03:21,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:21,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:21,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:21,940 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:21,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_090774e9-e069-443c-a11d-194ac3e1d836/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:03:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:21,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:03:21,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:22,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:22,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:22,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:22,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154993783] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:03:22,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:03:22,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-28 03:03:22,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320138650] [2024-11-28 03:03:22,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:03:22,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:03:22,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:22,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:03:22,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:03:22,067 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-11-28 03:03:22,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 256 transitions, 3203 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 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) [2024-11-28 03:03:22,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:03:22,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-11-28 03:03:22,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand