./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-difference-det.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_2818364f-93d3-4449-855d-75c3a00d04bb/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2818364f-93d3-4449-855d-75c3a00d04bb/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_2818364f-93d3-4449-855d-75c3a00d04bb/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2818364f-93d3-4449-855d-75c3a00d04bb/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2818364f-93d3-4449-855d-75c3a00d04bb/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_2818364f-93d3-4449-855d-75c3a00d04bb/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 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:37:34,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:37:34,796 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2818364f-93d3-4449-855d-75c3a00d04bb/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 03:37:34,803 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:37:34,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:37:34,850 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:37:34,851 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:37:34,851 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:37:34,852 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:37:34,852 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:37:34,852 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:37:34,852 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:37:34,852 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:37:34,853 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:37:34,853 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:37:34,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:37:34,853 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:37:34,853 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:37:34,853 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:37:34,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:37:34,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:37:34,854 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:37:34,854 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:37:34,854 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:37:34,854 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 03:37:34,854 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:37:34,855 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:37:34,855 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:37:34,855 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:37:34,855 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:37:34,855 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:37:34,855 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:37:34,856 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:37:34,856 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:37:34,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:37:34,856 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:37:34,856 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:37:34,856 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:37:34,856 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:37:34,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:37:34,857 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:37:34,857 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:37:34,857 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:37:34,857 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:37:34,857 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:37:34,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:37:34,858 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:37:34,858 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:37:34,858 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:37:34,858 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:37:34,858 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_2818364f-93d3-4449-855d-75c3a00d04bb/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 -> 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 [2024-11-28 03:37:35,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:37:35,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:37:35,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:37:35,221 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:37:35,222 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:37:35,224 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2818364f-93d3-4449-855d-75c3a00d04bb/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-28 03:37:38,531 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2818364f-93d3-4449-855d-75c3a00d04bb/bin/uautomizer-verify-aQ6SnzHsRB/data/97f2a2e15/39a1fad64a0848319618b40c11a9e662/FLAG4d84e1a8e [2024-11-28 03:37:38,920 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:37:38,921 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2818364f-93d3-4449-855d-75c3a00d04bb/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-28 03:37:38,937 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2818364f-93d3-4449-855d-75c3a00d04bb/bin/uautomizer-verify-aQ6SnzHsRB/data/97f2a2e15/39a1fad64a0848319618b40c11a9e662/FLAG4d84e1a8e [2024-11-28 03:37:39,002 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2818364f-93d3-4449-855d-75c3a00d04bb/bin/uautomizer-verify-aQ6SnzHsRB/data/97f2a2e15/39a1fad64a0848319618b40c11a9e662 [2024-11-28 03:37:39,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:37:39,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:37:39,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:37:39,017 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:37:39,025 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:37:39,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:37:39" (1/1) ... [2024-11-28 03:37:39,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55ce27a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:39, skipping insertion in model container [2024-11-28 03:37:39,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:37:39" (1/1) ... [2024-11-28 03:37:39,055 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:37:39,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:37:39,307 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:37:39,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:37:39,347 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:37:39,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:39 WrapperNode [2024-11-28 03:37:39,348 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:37:39,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:37:39,349 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:37:39,349 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:37:39,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:39" (1/1) ... [2024-11-28 03:37:39,368 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:39" (1/1) ... [2024-11-28 03:37:39,386 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 107 [2024-11-28 03:37:39,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:37:39,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:37:39,387 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:37:39,387 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:37:39,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:39" (1/1) ... [2024-11-28 03:37:39,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:39" (1/1) ... [2024-11-28 03:37:39,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:39" (1/1) ... [2024-11-28 03:37:39,412 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 03:37:39,412 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:39" (1/1) ... [2024-11-28 03:37:39,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:39" (1/1) ... [2024-11-28 03:37:39,417 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:39" (1/1) ... [2024-11-28 03:37:39,418 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:39" (1/1) ... [2024-11-28 03:37:39,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:39" (1/1) ... [2024-11-28 03:37:39,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:39" (1/1) ... [2024-11-28 03:37:39,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:39" (1/1) ... [2024-11-28 03:37:39,426 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:37:39,427 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:37:39,427 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:37:39,427 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:37:39,428 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:39" (1/1) ... [2024-11-28 03:37:39,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:37:39,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2818364f-93d3-4449-855d-75c3a00d04bb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:37:39,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2818364f-93d3-4449-855d-75c3a00d04bb/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:37:39,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2818364f-93d3-4449-855d-75c3a00d04bb/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:37:39,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:37:39,494 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 03:37:39,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 03:37:39,494 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 03:37:39,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 03:37:39,494 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 03:37:39,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 03:37:39,495 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-28 03:37:39,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-28 03:37:39,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:37:39,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:37:39,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:37:39,496 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 03:37:39,602 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:37:39,604 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:37:40,061 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:37:40,061 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:37:40,333 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:37:40,334 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 03:37:40,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:37:40 BoogieIcfgContainer [2024-11-28 03:37:40,334 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:37:40,340 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:37:40,340 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:37:40,347 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:37:40,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:37:39" (1/3) ... [2024-11-28 03:37:40,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49feed86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:37:40, skipping insertion in model container [2024-11-28 03:37:40,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:37:39" (2/3) ... [2024-11-28 03:37:40,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49feed86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:37:40, skipping insertion in model container [2024-11-28 03:37:40,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:37:40" (3/3) ... [2024-11-28 03:37:40,350 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-11-28 03:37:40,370 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:37:40,372 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-difference-det.wvr.c that has 5 procedures, 59 locations, 1 initial locations, 4 loop locations, and 16 error locations. [2024-11-28 03:37:40,372 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:37:40,468 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 03:37:40,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 62 transitions, 152 flow [2024-11-28 03:37:40,570 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2024-11-28 03:37:40,572 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 03:37:40,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 4/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 169 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-11-28 03:37:40,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 62 transitions, 152 flow [2024-11-28 03:37:40,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 133 flow [2024-11-28 03:37:40,589 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:37:40,602 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;@3582f5f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:37:40,602 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-28 03:37:40,608 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:37:40,608 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-28 03:37:40,608 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:37:40,608 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:40,609 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 03:37:40,609 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 03:37:40,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:40,615 INFO L85 PathProgramCache]: Analyzing trace with hash 385184741, now seen corresponding path program 1 times [2024-11-28 03:37:40,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:40,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040057639] [2024-11-28 03:37:40,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:40,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:40,876 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 03:37:40,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:40,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040057639] [2024-11-28 03:37:40,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040057639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:40,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:40,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:37:40,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518670936] [2024-11-28 03:37:40,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:40,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:37:40,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:40,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:37:40,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:37:40,932 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-28 03:37:40,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 03:37:40,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:37:40,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-28 03:37:40,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:37:45,971 INFO L124 PetriNetUnfolderBase]: 26633/39153 cut-off events. [2024-11-28 03:37:45,971 INFO L125 PetriNetUnfolderBase]: For 1918/1918 co-relation queries the response was YES. [2024-11-28 03:37:46,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75527 conditions, 39153 events. 26633/39153 cut-off events. For 1918/1918 co-relation queries the response was YES. Maximal size of possible extension queue 1871. Compared 285012 event pairs, 6878 based on Foata normal form. 0/28295 useless extension candidates. Maximal degree in co-relation 69156. Up to 29555 conditions per place. [2024-11-28 03:37:46,273 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 69 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-11-28 03:37:46,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 85 transitions, 351 flow [2024-11-28 03:37:46,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:37:46,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:37:46,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2024-11-28 03:37:46,293 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6881720430107527 [2024-11-28 03:37:46,297 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 133 flow. Second operand 3 states and 128 transitions. [2024-11-28 03:37:46,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 85 transitions, 351 flow [2024-11-28 03:37:46,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 85 transitions, 327 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-28 03:37:46,486 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 136 flow [2024-11-28 03:37:46,489 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-11-28 03:37:46,495 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2024-11-28 03:37:46,495 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 136 flow [2024-11-28 03:37:46,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 03:37:46,497 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:46,497 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:46,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:37:46,497 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 03:37:46,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:46,499 INFO L85 PathProgramCache]: Analyzing trace with hash 795363784, now seen corresponding path program 1 times [2024-11-28 03:37:46,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:46,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80451461] [2024-11-28 03:37:46,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:46,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:46,611 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 03:37:46,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:46,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80451461] [2024-11-28 03:37:46,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80451461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:46,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:46,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:37:46,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954616458] [2024-11-28 03:37:46,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:46,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:37:46,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:46,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:37:46,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:37:46,629 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-28 03:37:46,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 03:37:46,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:37:46,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-28 03:37:46,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:37:51,421 INFO L124 PetriNetUnfolderBase]: 40657/59237 cut-off events. [2024-11-28 03:37:51,421 INFO L125 PetriNetUnfolderBase]: For 3180/3180 co-relation queries the response was YES. [2024-11-28 03:37:51,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118597 conditions, 59237 events. 40657/59237 cut-off events. For 3180/3180 co-relation queries the response was YES. Maximal size of possible extension queue 2684. Compared 435604 event pairs, 23154 based on Foata normal form. 1026/45352 useless extension candidates. Maximal degree in co-relation 52747. Up to 42823 conditions per place. [2024-11-28 03:37:51,949 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 104 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2024-11-28 03:37:51,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 120 transitions, 490 flow [2024-11-28 03:37:51,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:37:51,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:37:51,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 174 transitions. [2024-11-28 03:37:51,954 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7016129032258065 [2024-11-28 03:37:51,955 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 136 flow. Second operand 4 states and 174 transitions. [2024-11-28 03:37:51,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 120 transitions, 490 flow [2024-11-28 03:37:51,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 120 transitions, 488 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:37:51,965 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 163 flow [2024-11-28 03:37:51,966 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-11-28 03:37:51,967 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 0 predicate places. [2024-11-28 03:37:51,967 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 163 flow [2024-11-28 03:37:51,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 03:37:51,968 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:51,968 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:51,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:37:51,968 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 03:37:51,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:51,970 INFO L85 PathProgramCache]: Analyzing trace with hash 813088750, now seen corresponding path program 1 times [2024-11-28 03:37:51,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:51,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558808557] [2024-11-28 03:37:51,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:51,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:52,086 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 03:37:52,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:52,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558808557] [2024-11-28 03:37:52,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558808557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:52,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:52,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:37:52,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476046977] [2024-11-28 03:37:52,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:52,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:37:52,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:52,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:37:52,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:37:52,088 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-28 03:37:52,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 03:37:52,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:37:52,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-28 03:37:52,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:37:55,080 INFO L124 PetriNetUnfolderBase]: 34577/51726 cut-off events. [2024-11-28 03:37:55,080 INFO L125 PetriNetUnfolderBase]: For 12388/14116 co-relation queries the response was YES. [2024-11-28 03:37:55,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112182 conditions, 51726 events. 34577/51726 cut-off events. For 12388/14116 co-relation queries the response was YES. Maximal size of possible extension queue 1985. Compared 380845 event pairs, 8936 based on Foata normal form. 0/39797 useless extension candidates. Maximal degree in co-relation 56048. Up to 37724 conditions per place. [2024-11-28 03:37:55,439 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 72 selfloop transitions, 2 changer transitions 1/89 dead transitions. [2024-11-28 03:37:55,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 89 transitions, 405 flow [2024-11-28 03:37:55,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:37:55,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:37:55,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-28 03:37:55,441 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 03:37:55,441 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 163 flow. Second operand 3 states and 124 transitions. [2024-11-28 03:37:55,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 89 transitions, 405 flow [2024-11-28 03:37:55,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:37:55,461 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 176 flow [2024-11-28 03:37:55,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-11-28 03:37:55,463 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2024-11-28 03:37:55,463 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 176 flow [2024-11-28 03:37:55,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 03:37:55,463 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:55,463 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:55,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:37:55,464 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 03:37:55,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:55,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2025652031, now seen corresponding path program 1 times [2024-11-28 03:37:55,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:55,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33960776] [2024-11-28 03:37:55,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:55,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:55,539 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 03:37:55,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:55,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33960776] [2024-11-28 03:37:55,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33960776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:55,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:55,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:37:55,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895604821] [2024-11-28 03:37:55,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:55,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:37:55,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:55,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:37:55,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:37:55,542 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-28 03:37:55,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 03:37:55,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:37:55,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-28 03:37:55,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:37:58,436 INFO L124 PetriNetUnfolderBase]: 31801/47207 cut-off events. [2024-11-28 03:37:58,436 INFO L125 PetriNetUnfolderBase]: For 12756/13684 co-relation queries the response was YES. [2024-11-28 03:37:58,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107818 conditions, 47207 events. 31801/47207 cut-off events. For 12756/13684 co-relation queries the response was YES. Maximal size of possible extension queue 1791. Compared 343763 event pairs, 19145 based on Foata normal form. 0/38391 useless extension candidates. Maximal degree in co-relation 58111. Up to 29306 conditions per place. [2024-11-28 03:37:58,676 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 79 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-11-28 03:37:58,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 96 transitions, 444 flow [2024-11-28 03:37:58,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:37:58,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:37:58,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-28 03:37:58,678 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6989247311827957 [2024-11-28 03:37:58,678 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 176 flow. Second operand 3 states and 130 transitions. [2024-11-28 03:37:58,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 96 transitions, 444 flow [2024-11-28 03:37:58,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 96 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:37:58,724 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 198 flow [2024-11-28 03:37:58,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2024-11-28 03:37:58,725 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 4 predicate places. [2024-11-28 03:37:58,725 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 198 flow [2024-11-28 03:37:58,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 03:37:58,725 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:37:58,726 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:58,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:37:58,726 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 03:37:58,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:58,727 INFO L85 PathProgramCache]: Analyzing trace with hash -669750916, now seen corresponding path program 1 times [2024-11-28 03:37:58,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:58,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301154506] [2024-11-28 03:37:58,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:58,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:58,899 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 03:37:58,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:58,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301154506] [2024-11-28 03:37:58,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301154506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:58,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:37:58,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:37:58,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148583003] [2024-11-28 03:37:58,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:58,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:37:58,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:58,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:37:58,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:37:58,902 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-28 03:37:58,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 03:37:58,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:37:58,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-28 03:37:58,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:38:02,984 INFO L124 PetriNetUnfolderBase]: 37799/56460 cut-off events. [2024-11-28 03:38:02,984 INFO L125 PetriNetUnfolderBase]: For 31720/31854 co-relation queries the response was YES. [2024-11-28 03:38:03,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137154 conditions, 56460 events. 37799/56460 cut-off events. For 31720/31854 co-relation queries the response was YES. Maximal size of possible extension queue 1799. Compared 416693 event pairs, 5739 based on Foata normal form. 1533/51757 useless extension candidates. Maximal degree in co-relation 68027. Up to 24870 conditions per place. [2024-11-28 03:38:03,297 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 107 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2024-11-28 03:38:03,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 125 transitions, 598 flow [2024-11-28 03:38:03,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:38:03,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:38:03,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 180 transitions. [2024-11-28 03:38:03,299 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7258064516129032 [2024-11-28 03:38:03,299 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 198 flow. Second operand 4 states and 180 transitions. [2024-11-28 03:38:03,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 125 transitions, 598 flow [2024-11-28 03:38:03,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 125 transitions, 588 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:38:03,484 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 226 flow [2024-11-28 03:38:03,484 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2024-11-28 03:38:03,485 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2024-11-28 03:38:03,485 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 226 flow [2024-11-28 03:38:03,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 03:38:03,485 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:38:03,485 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:03,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:38:03,485 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 03:38:03,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:03,486 INFO L85 PathProgramCache]: Analyzing trace with hash -651639302, now seen corresponding path program 1 times [2024-11-28 03:38:03,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:03,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498716560] [2024-11-28 03:38:03,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:03,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:03,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:03,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498716560] [2024-11-28 03:38:03,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498716560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:03,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786591919] [2024-11-28 03:38:03,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:03,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:03,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2818364f-93d3-4449-855d-75c3a00d04bb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:03,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2818364f-93d3-4449-855d-75c3a00d04bb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:03,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2818364f-93d3-4449-855d-75c3a00d04bb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:38:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:03,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:38:03,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:03,708 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:03,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786591919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:03,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:03,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-28 03:38:03,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928984563] [2024-11-28 03:38:03,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:03,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:38:03,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:03,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:38:03,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:38:03,710 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-28 03:38:03,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 03:38:03,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:38:03,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-28 03:38:03,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:38:06,688 INFO L124 PetriNetUnfolderBase]: 34553/52242 cut-off events. [2024-11-28 03:38:06,688 INFO L125 PetriNetUnfolderBase]: For 42287/43129 co-relation queries the response was YES. [2024-11-28 03:38:06,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125561 conditions, 52242 events. 34553/52242 cut-off events. For 42287/43129 co-relation queries the response was YES. Maximal size of possible extension queue 1619. Compared 387039 event pairs, 29596 based on Foata normal form. 1344/46874 useless extension candidates. Maximal degree in co-relation 58598. Up to 45342 conditions per place. [2024-11-28 03:38:06,962 INFO L140 encePairwiseOnDemand]: 60/62 looper letters, 47 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2024-11-28 03:38:06,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 62 transitions, 304 flow [2024-11-28 03:38:06,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:38:06,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:38:06,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-28 03:38:06,964 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.510752688172043 [2024-11-28 03:38:06,964 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 226 flow. Second operand 3 states and 95 transitions. [2024-11-28 03:38:06,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 62 transitions, 304 flow [2024-11-28 03:38:06,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 298 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:38:06,991 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 204 flow [2024-11-28 03:38:06,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2024-11-28 03:38:06,992 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 5 predicate places. [2024-11-28 03:38:06,992 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 204 flow [2024-11-28 03:38:06,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 03:38:06,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:38:06,993 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:06,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2818364f-93d3-4449-855d-75c3a00d04bb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:38:07,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2818364f-93d3-4449-855d-75c3a00d04bb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:07,194 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 03:38:07,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:07,194 INFO L85 PathProgramCache]: Analyzing trace with hash -305743279, now seen corresponding path program 1 times [2024-11-28 03:38:07,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:07,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458710958] [2024-11-28 03:38:07,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:07,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:07,251 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 03:38:07,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:07,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458710958] [2024-11-28 03:38:07,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458710958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:07,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:07,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:38:07,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851157738] [2024-11-28 03:38:07,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:07,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:38:07,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:07,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:38:07,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:38:07,259 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-28 03:38:07,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 03:38:07,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:38:07,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-28 03:38:07,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:38:12,097 INFO L124 PetriNetUnfolderBase]: 53601/78312 cut-off events. [2024-11-28 03:38:12,097 INFO L125 PetriNetUnfolderBase]: For 42949/44351 co-relation queries the response was YES. [2024-11-28 03:38:12,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187244 conditions, 78312 events. 53601/78312 cut-off events. For 42949/44351 co-relation queries the response was YES. Maximal size of possible extension queue 2245. Compared 570032 event pairs, 30660 based on Foata normal form. 1448/71331 useless extension candidates. Maximal degree in co-relation 187230. Up to 56061 conditions per place. [2024-11-28 03:38:12,835 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 115 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-11-28 03:38:12,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 131 transitions, 696 flow [2024-11-28 03:38:12,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:38:12,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:38:12,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-28 03:38:12,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-28 03:38:12,837 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 204 flow. Second operand 4 states and 164 transitions. [2024-11-28 03:38:12,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 131 transitions, 696 flow [2024-11-28 03:38:12,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 131 transitions, 695 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:38:12,895 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 232 flow [2024-11-28 03:38:12,895 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-11-28 03:38:12,896 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 9 predicate places. [2024-11-28 03:38:12,896 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 232 flow [2024-11-28 03:38:12,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 03:38:12,896 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:38:12,896 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:12,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:38:12,897 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 03:38:12,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:12,898 INFO L85 PathProgramCache]: Analyzing trace with hash 614478654, now seen corresponding path program 1 times [2024-11-28 03:38:12,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:12,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844869734] [2024-11-28 03:38:12,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:12,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:12,965 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 03:38:12,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:12,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844869734] [2024-11-28 03:38:12,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844869734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:12,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:12,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:38:12,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720802320] [2024-11-28 03:38:12,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:12,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:38:12,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:12,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:38:12,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:38:12,978 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-28 03:38:12,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 03:38:12,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:38:12,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-28 03:38:12,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand