./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd --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 287b872f435ea31dbbf77f267944e24b96122b5f745db0674c91555289f3b84c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:52:55,979 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:52:56,094 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 13:52:56,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:52:56,101 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:52:56,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:52:56,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:52:56,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:52:56,132 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:52:56,133 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:52:56,133 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:52:56,133 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:52:56,134 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:52:56,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:52:56,134 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:52:56,134 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:52:56,134 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:52:56,135 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:52:56,135 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:52:56,135 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:52:56,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:52:56,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:52:56,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:52:56,136 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:52:56,136 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:52:56,136 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 13:52:56,136 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:52:56,136 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:52:56,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:52:56,136 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:52:56,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:52:56,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:52:56,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:52:56,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:52:56,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:52:56,137 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:52:56,137 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:52:56,137 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:52:56,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:52:56,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:52:56,138 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:52:56,138 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:52:56,138 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:52:56,138 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:52:56,138 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_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd 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 -> 287b872f435ea31dbbf77f267944e24b96122b5f745db0674c91555289f3b84c [2024-11-13 13:52:56,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:52:56,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:52:56,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:52:56,540 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:52:56,540 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:52:56,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c Unable to find full path for "g++" [2024-11-13 13:52:58,896 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:52:59,294 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:52:59,295 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2024-11-13 13:52:59,332 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/data/58f0a52ba/b075febe203740f7a4e70edb3d25bd5c/FLAG0c5b2364d [2024-11-13 13:52:59,367 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/data/58f0a52ba/b075febe203740f7a4e70edb3d25bd5c [2024-11-13 13:52:59,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:52:59,372 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:52:59,375 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:52:59,375 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:52:59,385 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:52:59,386 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:52:59" (1/1) ... [2024-11-13 13:52:59,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f262652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:59, skipping insertion in model container [2024-11-13 13:52:59,388 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:52:59" (1/1) ... [2024-11-13 13:52:59,410 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:52:59,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:52:59,679 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:52:59,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:52:59,740 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:52:59,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:59 WrapperNode [2024-11-13 13:52:59,741 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:52:59,742 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:52:59,743 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:52:59,743 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:52:59,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:59" (1/1) ... [2024-11-13 13:52:59,765 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:59" (1/1) ... [2024-11-13 13:52:59,794 INFO L138 Inliner]: procedures = 19, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2024-11-13 13:52:59,797 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:52:59,797 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:52:59,798 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:52:59,800 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:52:59,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:59" (1/1) ... [2024-11-13 13:52:59,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:59" (1/1) ... [2024-11-13 13:52:59,813 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:59" (1/1) ... [2024-11-13 13:52:59,838 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]. [2024-11-13 13:52:59,840 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:59" (1/1) ... [2024-11-13 13:52:59,840 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:59" (1/1) ... [2024-11-13 13:52:59,850 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:59" (1/1) ... [2024-11-13 13:52:59,858 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:59" (1/1) ... [2024-11-13 13:52:59,865 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:59" (1/1) ... [2024-11-13 13:52:59,866 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:59" (1/1) ... [2024-11-13 13:52:59,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:52:59,873 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:52:59,873 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:52:59,874 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:52:59,875 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:59" (1/1) ... [2024-11-13 13:52:59,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:52:59,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:52:59,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:52:59,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:52:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:52:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 13:52:59,952 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 13:52:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 13:52:59,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 13:52:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 13:52:59,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 13:52:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:52:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:52:59,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:52:59,955 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 13:53:00,068 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:53:00,071 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:53:00,419 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:53:00,419 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:53:00,680 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:53:00,684 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:53:00,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:53:00 BoogieIcfgContainer [2024-11-13 13:53:00,684 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:53:00,687 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:53:00,690 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:53:00,698 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:53:00,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:52:59" (1/3) ... [2024-11-13 13:53:00,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c7a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:53:00, skipping insertion in model container [2024-11-13 13:53:00,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:52:59" (2/3) ... [2024-11-13 13:53:00,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c7a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:53:00, skipping insertion in model container [2024-11-13 13:53:00,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:53:00" (3/3) ... [2024-11-13 13:53:00,702 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2024-11-13 13:53:00,724 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:53:00,727 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-4.wvr.c that has 4 procedures, 44 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2024-11-13 13:53:00,728 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:53:00,861 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 13:53:00,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2024-11-13 13:53:00,997 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2024-11-13 13:53:01,002 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 13:53:01,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 4/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 124 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-13 13:53:01,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2024-11-13 13:53:01,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 41 transitions, 94 flow [2024-11-13 13:53:01,032 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:53:01,049 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;@6805c16a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:53:01,049 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-13 13:53:01,061 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:53:01,062 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-11-13 13:53:01,062 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:53:01,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:53:01,064 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:01,064 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:53:01,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:01,072 INFO L85 PathProgramCache]: Analyzing trace with hash 587096491, now seen corresponding path program 1 times [2024-11-13 13:53:01,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:01,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158140826] [2024-11-13 13:53:01,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:01,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:01,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:01,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158140826] [2024-11-13 13:53:01,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158140826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:53:01,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:53:01,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:53:01,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270591404] [2024-11-13 13:53:01,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:53:01,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:53:01,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:01,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:53:01,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:53:01,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-13 13:53:01,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-13 13:53:01,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:53:01,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-13 13:53:01,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:53:02,249 INFO L124 PetriNetUnfolderBase]: 1427/2351 cut-off events. [2024-11-13 13:53:02,249 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-13 13:53:02,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4507 conditions, 2351 events. 1427/2351 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 14678 event pairs, 366 based on Foata normal form. 0/1476 useless extension candidates. Maximal degree in co-relation 4309. Up to 1112 conditions per place. [2024-11-13 13:53:02,286 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 34 selfloop transitions, 9 changer transitions 0/58 dead transitions. [2024-11-13 13:53:02,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 223 flow [2024-11-13 13:53:02,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:53:02,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:53:02,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-13 13:53:02,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7163120567375887 [2024-11-13 13:53:02,307 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 94 flow. Second operand 3 states and 101 transitions. [2024-11-13 13:53:02,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 223 flow [2024-11-13 13:53:02,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 213 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 13:53:02,335 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 156 flow [2024-11-13 13:53:02,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2024-11-13 13:53:02,345 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2024-11-13 13:53:02,346 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 156 flow [2024-11-13 13:53:02,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-13 13:53:02,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:53:02,348 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:02,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:53:02,349 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:53:02,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:02,350 INFO L85 PathProgramCache]: Analyzing trace with hash 587096492, now seen corresponding path program 1 times [2024-11-13 13:53:02,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:02,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986799813] [2024-11-13 13:53:02,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:02,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:02,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:02,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:02,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986799813] [2024-11-13 13:53:02,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986799813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:53:02,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:53:02,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:53:02,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533926513] [2024-11-13 13:53:02,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:53:02,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:53:02,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:02,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:53:02,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:53:02,581 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-13 13:53:02,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-13 13:53:02,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:53:02,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-13 13:53:02,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:53:03,421 INFO L124 PetriNetUnfolderBase]: 2294/3620 cut-off events. [2024-11-13 13:53:03,422 INFO L125 PetriNetUnfolderBase]: For 2327/2327 co-relation queries the response was YES. [2024-11-13 13:53:03,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8671 conditions, 3620 events. 2294/3620 cut-off events. For 2327/2327 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 20958 event pairs, 366 based on Foata normal form. 222/3345 useless extension candidates. Maximal degree in co-relation 5778. Up to 1903 conditions per place. [2024-11-13 13:53:03,473 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 42 selfloop transitions, 9 changer transitions 0/66 dead transitions. [2024-11-13 13:53:03,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 66 transitions, 321 flow [2024-11-13 13:53:03,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:53:03,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:53:03,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-13 13:53:03,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7163120567375887 [2024-11-13 13:53:03,479 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 156 flow. Second operand 3 states and 101 transitions. [2024-11-13 13:53:03,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 66 transitions, 321 flow [2024-11-13 13:53:03,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:53:03,511 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 222 flow [2024-11-13 13:53:03,511 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2024-11-13 13:53:03,514 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-13 13:53:03,515 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 222 flow [2024-11-13 13:53:03,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-13 13:53:03,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:53:03,515 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:03,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:53:03,516 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:53:03,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:03,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1204982345, now seen corresponding path program 1 times [2024-11-13 13:53:03,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:03,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698461208] [2024-11-13 13:53:03,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:03,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:03,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:03,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:03,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698461208] [2024-11-13 13:53:03,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698461208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:53:03,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:53:03,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:53:03,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057807840] [2024-11-13 13:53:03,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:53:03,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:53:03,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:03,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:53:03,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:53:03,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-13 13:53:03,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-13 13:53:03,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:53:03,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-13 13:53:03,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:53:04,474 INFO L124 PetriNetUnfolderBase]: 2661/4080 cut-off events. [2024-11-13 13:53:04,474 INFO L125 PetriNetUnfolderBase]: For 3833/4463 co-relation queries the response was YES. [2024-11-13 13:53:04,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11335 conditions, 4080 events. 2661/4080 cut-off events. For 3833/4463 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 24067 event pairs, 747 based on Foata normal form. 0/3676 useless extension candidates. Maximal degree in co-relation 9334. Up to 1838 conditions per place. [2024-11-13 13:53:04,515 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 60 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-11-13 13:53:04,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 76 transitions, 445 flow [2024-11-13 13:53:04,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:53:04,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:53:04,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-11-13 13:53:04,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-13 13:53:04,518 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 222 flow. Second operand 3 states and 94 transitions. [2024-11-13 13:53:04,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 76 transitions, 445 flow [2024-11-13 13:53:04,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 76 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:53:04,531 INFO L231 Difference]: Finished difference. Result has 51 places, 55 transitions, 226 flow [2024-11-13 13:53:04,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=51, PETRI_TRANSITIONS=55} [2024-11-13 13:53:04,533 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2024-11-13 13:53:04,534 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 55 transitions, 226 flow [2024-11-13 13:53:04,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-13 13:53:04,535 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:53:04,535 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:04,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:53:04,535 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:53:04,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:04,536 INFO L85 PathProgramCache]: Analyzing trace with hash -917373368, now seen corresponding path program 1 times [2024-11-13 13:53:04,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:04,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288591379] [2024-11-13 13:53:04,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:04,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:04,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:04,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:04,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288591379] [2024-11-13 13:53:04,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288591379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:53:04,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840557475] [2024-11-13 13:53:04,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:04,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:04,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:53:04,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:53:04,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:53:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:04,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:53:04,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:53:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:04,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:53:05,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:05,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840557475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:53:05,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:53:05,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-13 13:53:05,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024536472] [2024-11-13 13:53:05,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:53:05,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:53:05,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:05,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:53:05,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:53:05,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-13 13:53:05,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 55 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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) [2024-11-13 13:53:05,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:53:05,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-13 13:53:05,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:53:06,312 INFO L124 PetriNetUnfolderBase]: 4322/7382 cut-off events. [2024-11-13 13:53:06,312 INFO L125 PetriNetUnfolderBase]: For 5320/5320 co-relation queries the response was YES. [2024-11-13 13:53:06,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19446 conditions, 7382 events. 4322/7382 cut-off events. For 5320/5320 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 49210 event pairs, 161 based on Foata normal form. 272/7110 useless extension candidates. Maximal degree in co-relation 17616. Up to 2053 conditions per place. [2024-11-13 13:53:06,396 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 86 selfloop transitions, 40 changer transitions 0/143 dead transitions. [2024-11-13 13:53:06,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 143 transitions, 801 flow [2024-11-13 13:53:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:53:06,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 13:53:06,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 248 transitions. [2024-11-13 13:53:06,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7537993920972644 [2024-11-13 13:53:06,400 INFO L175 Difference]: Start difference. First operand has 51 places, 55 transitions, 226 flow. Second operand 7 states and 248 transitions. [2024-11-13 13:53:06,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 143 transitions, 801 flow [2024-11-13 13:53:06,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 143 transitions, 795 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:53:06,412 INFO L231 Difference]: Finished difference. Result has 59 places, 91 transitions, 620 flow [2024-11-13 13:53:06,414 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=620, PETRI_PLACES=59, PETRI_TRANSITIONS=91} [2024-11-13 13:53:06,415 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2024-11-13 13:53:06,415 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 91 transitions, 620 flow [2024-11-13 13:53:06,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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) [2024-11-13 13:53:06,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:53:06,416 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:06,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 13:53:06,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-13 13:53:06,621 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:53:06,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:06,622 INFO L85 PathProgramCache]: Analyzing trace with hash -301644141, now seen corresponding path program 1 times [2024-11-13 13:53:06,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:06,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640569513] [2024-11-13 13:53:06,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:06,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:06,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:06,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640569513] [2024-11-13 13:53:06,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640569513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:53:06,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:53:06,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:53:06,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101297932] [2024-11-13 13:53:06,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:53:06,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:53:06,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:06,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:53:06,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:53:06,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-13 13:53:06,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 91 transitions, 620 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) [2024-11-13 13:53:06,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:53:06,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-13 13:53:06,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:53:08,207 INFO L124 PetriNetUnfolderBase]: 5708/8921 cut-off events. [2024-11-13 13:53:08,208 INFO L125 PetriNetUnfolderBase]: For 23783/23819 co-relation queries the response was YES. [2024-11-13 13:53:08,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30051 conditions, 8921 events. 5708/8921 cut-off events. For 23783/23819 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 58777 event pairs, 1597 based on Foata normal form. 0/8134 useless extension candidates. Maximal degree in co-relation 14092. Up to 4064 conditions per place. [2024-11-13 13:53:08,290 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 104 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2024-11-13 13:53:08,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 122 transitions, 1057 flow [2024-11-13 13:53:08,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:53:08,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:53:08,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-11-13 13:53:08,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6524822695035462 [2024-11-13 13:53:08,292 INFO L175 Difference]: Start difference. First operand has 59 places, 91 transitions, 620 flow. Second operand 3 states and 92 transitions. [2024-11-13 13:53:08,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 122 transitions, 1057 flow [2024-11-13 13:53:08,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 122 transitions, 1045 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-13 13:53:08,347 INFO L231 Difference]: Finished difference. Result has 63 places, 88 transitions, 593 flow [2024-11-13 13:53:08,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=593, PETRI_PLACES=63, PETRI_TRANSITIONS=88} [2024-11-13 13:53:08,348 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 16 predicate places. [2024-11-13 13:53:08,348 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 88 transitions, 593 flow [2024-11-13 13:53:08,348 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) [2024-11-13 13:53:08,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:53:08,348 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:08,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:53:08,349 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:53:08,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:08,353 INFO L85 PathProgramCache]: Analyzing trace with hash 757606288, now seen corresponding path program 1 times [2024-11-13 13:53:08,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:08,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863409089] [2024-11-13 13:53:08,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:08,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:53:08,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:08,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863409089] [2024-11-13 13:53:08,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863409089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:53:08,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563155693] [2024-11-13 13:53:08,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:08,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:08,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:53:08,609 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:53:08,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:53:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:08,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:53:08,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:53:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:53:08,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:53:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:53:08,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563155693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:53:08,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:53:08,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2024-11-13 13:53:08,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644992610] [2024-11-13 13:53:08,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:53:08,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 13:53:08,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:08,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 13:53:08,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:53:08,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-13 13:53:08,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 88 transitions, 593 flow. Second operand has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 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) [2024-11-13 13:53:08,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:53:08,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-13 13:53:08,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:53:10,760 INFO L124 PetriNetUnfolderBase]: 6006/11446 cut-off events. [2024-11-13 13:53:10,761 INFO L125 PetriNetUnfolderBase]: For 45761/45761 co-relation queries the response was YES. [2024-11-13 13:53:10,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37206 conditions, 11446 events. 6006/11446 cut-off events. For 45761/45761 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 92578 event pairs, 396 based on Foata normal form. 1644/12458 useless extension candidates. Maximal degree in co-relation 25392. Up to 3246 conditions per place. [2024-11-13 13:53:10,870 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 76 selfloop transitions, 50 changer transitions 0/145 dead transitions. [2024-11-13 13:53:10,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 145 transitions, 1176 flow [2024-11-13 13:53:10,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:53:10,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 13:53:10,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 233 transitions. [2024-11-13 13:53:10,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6196808510638298 [2024-11-13 13:53:10,875 INFO L175 Difference]: Start difference. First operand has 63 places, 88 transitions, 593 flow. Second operand 8 states and 233 transitions. [2024-11-13 13:53:10,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 145 transitions, 1176 flow [2024-11-13 13:53:10,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 145 transitions, 1170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:53:10,940 INFO L231 Difference]: Finished difference. Result has 70 places, 108 transitions, 1038 flow [2024-11-13 13:53:10,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1038, PETRI_PLACES=70, PETRI_TRANSITIONS=108} [2024-11-13 13:53:10,943 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2024-11-13 13:53:10,943 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 108 transitions, 1038 flow [2024-11-13 13:53:10,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 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) [2024-11-13 13:53:10,945 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:53:10,945 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:10,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:53:11,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 13:53:11,146 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:53:11,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:11,146 INFO L85 PathProgramCache]: Analyzing trace with hash 963709942, now seen corresponding path program 1 times [2024-11-13 13:53:11,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:11,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733466471] [2024-11-13 13:53:11,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:11,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:11,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:11,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:11,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733466471] [2024-11-13 13:53:11,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733466471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:53:11,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399970869] [2024-11-13 13:53:11,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:11,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:11,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:53:11,301 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:53:11,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:53:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:11,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:53:11,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:53:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:11,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:53:11,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:11,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399970869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:53:11,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:53:11,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-13 13:53:11,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453898571] [2024-11-13 13:53:11,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:53:11,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:53:11,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:11,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:53:11,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:53:11,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-13 13:53:11,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 108 transitions, 1038 flow. Second operand has 11 states, 11 states have (on average 20.181818181818183) internal successors, (222), 11 states have internal predecessors, (222), 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) [2024-11-13 13:53:11,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:53:11,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-13 13:53:11,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:53:16,192 INFO L124 PetriNetUnfolderBase]: 16375/32435 cut-off events. [2024-11-13 13:53:16,192 INFO L125 PetriNetUnfolderBase]: For 246112/246112 co-relation queries the response was YES. [2024-11-13 13:53:16,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115452 conditions, 32435 events. 16375/32435 cut-off events. For 246112/246112 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 304445 event pairs, 347 based on Foata normal form. 4100/34173 useless extension candidates. Maximal degree in co-relation 105862. Up to 5242 conditions per place. [2024-11-13 13:53:16,536 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 182 selfloop transitions, 162 changer transitions 0/363 dead transitions. [2024-11-13 13:53:16,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 363 transitions, 3886 flow [2024-11-13 13:53:16,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:53:16,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 13:53:16,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 385 transitions. [2024-11-13 13:53:16,540 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7446808510638298 [2024-11-13 13:53:16,540 INFO L175 Difference]: Start difference. First operand has 70 places, 108 transitions, 1038 flow. Second operand 11 states and 385 transitions. [2024-11-13 13:53:16,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 363 transitions, 3886 flow [2024-11-13 13:53:17,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 363 transitions, 3695 flow, removed 93 selfloop flow, removed 3 redundant places. [2024-11-13 13:53:17,435 INFO L231 Difference]: Finished difference. Result has 85 places, 246 transitions, 3340 flow [2024-11-13 13:53:17,435 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3340, PETRI_PLACES=85, PETRI_TRANSITIONS=246} [2024-11-13 13:53:17,436 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 38 predicate places. [2024-11-13 13:53:17,436 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 246 transitions, 3340 flow [2024-11-13 13:53:17,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.181818181818183) internal successors, (222), 11 states have internal predecessors, (222), 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) [2024-11-13 13:53:17,436 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:53:17,436 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:17,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:53:17,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:17,637 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:53:17,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:17,638 INFO L85 PathProgramCache]: Analyzing trace with hash 175965968, now seen corresponding path program 1 times [2024-11-13 13:53:17,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:17,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925935460] [2024-11-13 13:53:17,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:17,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:53:17,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:17,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925935460] [2024-11-13 13:53:17,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925935460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:53:17,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630056] [2024-11-13 13:53:17,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:17,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:17,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:53:17,773 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:53:17,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:53:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:17,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:53:17,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:53:17,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:17,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:53:17,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:53:17,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:53:17,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:53:17,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 6 [2024-11-13 13:53:17,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436819948] [2024-11-13 13:53:17,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:53:17,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:53:17,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:17,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:53:17,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:53:18,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-13 13:53:18,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 246 transitions, 3340 flow. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 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) [2024-11-13 13:53:18,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:53:18,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-13 13:53:18,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:53:30,452 INFO L124 PetriNetUnfolderBase]: 42967/83805 cut-off events. [2024-11-13 13:53:30,453 INFO L125 PetriNetUnfolderBase]: For 820456/820456 co-relation queries the response was YES. [2024-11-13 13:53:31,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352315 conditions, 83805 events. 42967/83805 cut-off events. For 820456/820456 co-relation queries the response was YES. Maximal size of possible extension queue 2655. Compared 885391 event pairs, 1189 based on Foata normal form. 3574/80915 useless extension candidates. Maximal degree in co-relation 328460. Up to 20205 conditions per place. [2024-11-13 13:53:31,619 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 413 selfloop transitions, 320 changer transitions 0/752 dead transitions. [2024-11-13 13:53:31,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 752 transitions, 11783 flow [2024-11-13 13:53:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:53:31,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 13:53:31,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2024-11-13 13:53:31,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7173252279635258 [2024-11-13 13:53:31,622 INFO L175 Difference]: Start difference. First operand has 85 places, 246 transitions, 3340 flow. Second operand 7 states and 236 transitions. [2024-11-13 13:53:31,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 752 transitions, 11783 flow [2024-11-13 13:53:39,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 752 transitions, 11252 flow, removed 263 selfloop flow, removed 1 redundant places. [2024-11-13 13:53:39,481 INFO L231 Difference]: Finished difference. Result has 94 places, 541 transitions, 9411 flow [2024-11-13 13:53:39,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3191, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9411, PETRI_PLACES=94, PETRI_TRANSITIONS=541} [2024-11-13 13:53:39,482 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 47 predicate places. [2024-11-13 13:53:39,482 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 541 transitions, 9411 flow [2024-11-13 13:53:39,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 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) [2024-11-13 13:53:39,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:53:39,483 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:39,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 13:53:39,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:39,684 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:53:39,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:39,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1253281268, now seen corresponding path program 1 times [2024-11-13 13:53:39,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:39,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445296472] [2024-11-13 13:53:39,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:39,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:39,984 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:53:39,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:39,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445296472] [2024-11-13 13:53:39,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445296472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:53:39,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056214128] [2024-11-13 13:53:39,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:39,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:39,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:53:39,988 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:53:39,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b6454e-09f7-49c5-8831-5c872ef442e7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:53:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:40,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 13:53:40,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:53:40,176 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:40,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:53:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:53:40,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056214128] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:53:40,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:53:40,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 10 [2024-11-13 13:53:40,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102519614] [2024-11-13 13:53:40,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:53:40,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:53:40,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:40,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:53:40,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:53:40,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-13 13:53:40,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 541 transitions, 9411 flow. Second operand has 11 states, 11 states have (on average 19.818181818181817) internal successors, (218), 11 states have internal predecessors, (218), 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) [2024-11-13 13:53:40,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:53:40,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-13 13:53:40,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand