./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC --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 8cea87724a542982ff884c708bfc22195aa1904db80300e5b965108c3d86cb2f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:21:00,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:21:00,605 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-24 00:21:00,610 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:21:00,611 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:21:00,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:21:00,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:21:00,636 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:21:00,637 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:21:00,637 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:21:00,637 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:21:00,637 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:21:00,637 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:21:00,638 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:21:00,638 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:21:00,638 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:21:00,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:21:00,638 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:21:00,640 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:21:00,640 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:21:00,640 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:21:00,640 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:21:00,641 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:21:00,641 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:21:00,641 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 00:21:00,641 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 00:21:00,641 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:21:00,641 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:21:00,641 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:21:00,641 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:21:00,642 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:21:00,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:21:00,642 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:21:00,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:21:00,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:21:00,642 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:21:00,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:21:00,642 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:21:00,643 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:21:00,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:21:00,644 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:21:00,644 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:21:00,644 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:21:00,644 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:21:00,644 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:21:00,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:21:00,644 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:21:00,644 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:21:00,645 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:21:00,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:21:00,645 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_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC 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 -> 8cea87724a542982ff884c708bfc22195aa1904db80300e5b965108c3d86cb2f [2024-11-24 00:21:00,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:21:00,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:21:00,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:21:00,963 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:21:00,964 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:21:00,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2024-11-24 00:21:04,057 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/data/bf3b8e7ae/8031a758e23b4a7e891eb9039f7c9e38/FLAG787f8631b [2024-11-24 00:21:04,314 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:21:04,315 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2024-11-24 00:21:04,322 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/data/bf3b8e7ae/8031a758e23b4a7e891eb9039f7c9e38/FLAG787f8631b [2024-11-24 00:21:04,336 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/data/bf3b8e7ae/8031a758e23b4a7e891eb9039f7c9e38 [2024-11-24 00:21:04,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:21:04,340 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:21:04,341 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:21:04,341 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:21:04,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:21:04,347 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:21:04" (1/1) ... [2024-11-24 00:21:04,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76225d85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:04, skipping insertion in model container [2024-11-24 00:21:04,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:21:04" (1/1) ... [2024-11-24 00:21:04,366 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:21:04,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:21:04,584 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:21:04,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:21:04,619 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:21:04,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:04 WrapperNode [2024-11-24 00:21:04,619 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:21:04,620 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:21:04,620 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:21:04,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:21:04,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:04" (1/1) ... [2024-11-24 00:21:04,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:04" (1/1) ... [2024-11-24 00:21:04,654 INFO L138 Inliner]: procedures = 19, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2024-11-24 00:21:04,655 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:21:04,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:21:04,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:21:04,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:21:04,666 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:04" (1/1) ... [2024-11-24 00:21:04,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:04" (1/1) ... [2024-11-24 00:21:04,671 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:04" (1/1) ... [2024-11-24 00:21:04,684 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]. [2024-11-24 00:21:04,684 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:04" (1/1) ... [2024-11-24 00:21:04,685 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:04" (1/1) ... [2024-11-24 00:21:04,690 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:04" (1/1) ... [2024-11-24 00:21:04,691 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:04" (1/1) ... [2024-11-24 00:21:04,696 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:04" (1/1) ... [2024-11-24 00:21:04,698 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:04" (1/1) ... [2024-11-24 00:21:04,699 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:04" (1/1) ... [2024-11-24 00:21:04,701 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:21:04,702 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:21:04,702 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:21:04,702 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:21:04,703 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:04" (1/1) ... [2024-11-24 00:21:04,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:21:04,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:21:04,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:21:04,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:21:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:21:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-24 00:21:04,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-24 00:21:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-24 00:21:04,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-24 00:21:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-24 00:21:04,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-24 00:21:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:21:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:21:04,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:21:04,787 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 00:21:04,904 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:21:04,906 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:21:05,261 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 00:21:05,261 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:21:05,456 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:21:05,457 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-24 00:21:05,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:21:05 BoogieIcfgContainer [2024-11-24 00:21:05,457 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:21:05,460 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:21:05,460 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:21:05,466 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:21:05,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:21:04" (1/3) ... [2024-11-24 00:21:05,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b19c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:21:05, skipping insertion in model container [2024-11-24 00:21:05,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:04" (2/3) ... [2024-11-24 00:21:05,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b19c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:21:05, skipping insertion in model container [2024-11-24 00:21:05,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:21:05" (3/3) ... [2024-11-24 00:21:05,468 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2024-11-24 00:21:05,483 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:21:05,484 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-3-extended.wvr.c that has 4 procedures, 47 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2024-11-24 00:21:05,485 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 00:21:05,607 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-24 00:21:05,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 52 transitions, 125 flow [2024-11-24 00:21:05,721 INFO L124 PetriNetUnfolderBase]: 6/49 cut-off events. [2024-11-24 00:21:05,725 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-24 00:21:05,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 6/49 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 155 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-11-24 00:21:05,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 52 transitions, 125 flow [2024-11-24 00:21:05,743 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 47 transitions, 109 flow [2024-11-24 00:21:05,755 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:21:05,768 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;@7101d3d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:21:05,768 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-11-24 00:21:05,774 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 00:21:05,774 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-24 00:21:05,774 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 00:21:05,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:21:05,775 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-24 00:21:05,776 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-24 00:21:05,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:05,782 INFO L85 PathProgramCache]: Analyzing trace with hash -446796878, now seen corresponding path program 1 times [2024-11-24 00:21:05,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:05,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516374296] [2024-11-24 00:21:05,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:05,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:06,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:06,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516374296] [2024-11-24 00:21:06,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516374296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:06,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:06,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-24 00:21:06,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042676400] [2024-11-24 00:21:06,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:06,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:21:06,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:06,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:21:06,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:21:06,149 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-11-24 00:21:06,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-24 00:21:06,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:21:06,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-11-24 00:21:06,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:21:07,564 INFO L124 PetriNetUnfolderBase]: 6500/8815 cut-off events. [2024-11-24 00:21:07,564 INFO L125 PetriNetUnfolderBase]: For 295/295 co-relation queries the response was YES. [2024-11-24 00:21:07,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16971 conditions, 8815 events. 6500/8815 cut-off events. For 295/295 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 47863 event pairs, 1294 based on Foata normal form. 0/4755 useless extension candidates. Maximal degree in co-relation 16153. Up to 7835 conditions per place. [2024-11-24 00:21:07,652 INFO L140 encePairwiseOnDemand]: 33/52 looper letters, 42 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2024-11-24 00:21:07,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 251 flow [2024-11-24 00:21:07,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:21:07,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:21:07,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-11-24 00:21:07,671 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.717948717948718 [2024-11-24 00:21:07,673 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 109 flow. Second operand 3 states and 112 transitions. [2024-11-24 00:21:07,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 251 flow [2024-11-24 00:21:07,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 63 transitions, 235 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-24 00:21:07,689 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 169 flow [2024-11-24 00:21:07,692 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2024-11-24 00:21:07,697 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2024-11-24 00:21:07,699 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 169 flow [2024-11-24 00:21:07,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-24 00:21:07,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:21:07,700 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:07,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:21:07,700 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-24 00:21:07,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:07,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1507921065, now seen corresponding path program 1 times [2024-11-24 00:21:07,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:07,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310443414] [2024-11-24 00:21:07,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:07,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:07,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:07,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:07,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310443414] [2024-11-24 00:21:07,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310443414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:21:07,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228607113] [2024-11-24 00:21:07,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:07,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:07,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:21:07,962 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:21:07,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:21:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:08,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:21:08,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:21:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:08,138 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:21:08,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228607113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:08,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:21:08,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-24 00:21:08,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38097659] [2024-11-24 00:21:08,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:08,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:21:08,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:08,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:21:08,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:21:08,142 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-11-24 00:21:08,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-11-24 00:21:08,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:21:08,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-11-24 00:21:08,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:21:08,894 INFO L124 PetriNetUnfolderBase]: 4110/5733 cut-off events. [2024-11-24 00:21:08,895 INFO L125 PetriNetUnfolderBase]: For 1039/1039 co-relation queries the response was YES. [2024-11-24 00:21:08,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14453 conditions, 5733 events. 4110/5733 cut-off events. For 1039/1039 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 31778 event pairs, 1597 based on Foata normal form. 0/3332 useless extension candidates. Maximal degree in co-relation 4511. Up to 5076 conditions per place. [2024-11-24 00:21:08,951 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 35 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2024-11-24 00:21:08,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 50 transitions, 229 flow [2024-11-24 00:21:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:21:08,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:21:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-24 00:21:08,953 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-11-24 00:21:08,953 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 169 flow. Second operand 3 states and 84 transitions. [2024-11-24 00:21:08,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 50 transitions, 229 flow [2024-11-24 00:21:08,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:21:08,958 INFO L231 Difference]: Finished difference. Result has 47 places, 50 transitions, 152 flow [2024-11-24 00:21:08,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=47, PETRI_TRANSITIONS=50} [2024-11-24 00:21:08,961 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2024-11-24 00:21:08,962 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 50 transitions, 152 flow [2024-11-24 00:21:08,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-11-24 00:21:08,963 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:21:08,963 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:08,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 00:21:09,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:09,164 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-24 00:21:09,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:09,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1507921064, now seen corresponding path program 1 times [2024-11-24 00:21:09,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:09,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805352936] [2024-11-24 00:21:09,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:09,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:09,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:09,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805352936] [2024-11-24 00:21:09,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805352936] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:21:09,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873823955] [2024-11-24 00:21:09,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:09,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:09,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:21:09,269 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:21:09,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:21:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:09,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:21:09,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:21:09,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:09,392 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:21:09,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:09,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873823955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:21:09,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:21:09,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-24 00:21:09,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631214978] [2024-11-24 00:21:09,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:21:09,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:21:09,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:09,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:21:09,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:21:09,449 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-11-24 00:21:09,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 50 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 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) [2024-11-24 00:21:09,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:21:09,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-11-24 00:21:09,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:21:11,350 INFO L124 PetriNetUnfolderBase]: 10503/15324 cut-off events. [2024-11-24 00:21:11,351 INFO L125 PetriNetUnfolderBase]: For 2900/2900 co-relation queries the response was YES. [2024-11-24 00:21:11,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36679 conditions, 15324 events. 10503/15324 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 91998 event pairs, 531 based on Foata normal form. 0/10902 useless extension candidates. Maximal degree in co-relation 36671. Up to 7945 conditions per place. [2024-11-24 00:21:11,451 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 99 selfloop transitions, 37 changer transitions 0/150 dead transitions. [2024-11-24 00:21:11,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 150 transitions, 725 flow [2024-11-24 00:21:11,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:21:11,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 00:21:11,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 277 transitions. [2024-11-24 00:21:11,456 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.760989010989011 [2024-11-24 00:21:11,458 INFO L175 Difference]: Start difference. First operand has 47 places, 50 transitions, 152 flow. Second operand 7 states and 277 transitions. [2024-11-24 00:21:11,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 150 transitions, 725 flow [2024-11-24 00:21:11,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 150 transitions, 724 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:21:11,464 INFO L231 Difference]: Finished difference. Result has 56 places, 80 transitions, 471 flow [2024-11-24 00:21:11,465 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=471, PETRI_PLACES=56, PETRI_TRANSITIONS=80} [2024-11-24 00:21:11,466 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2024-11-24 00:21:11,467 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 80 transitions, 471 flow [2024-11-24 00:21:11,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 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) [2024-11-24 00:21:11,467 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:21:11,468 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:11,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:21:11,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:11,668 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-24 00:21:11,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:11,669 INFO L85 PathProgramCache]: Analyzing trace with hash -676988031, now seen corresponding path program 1 times [2024-11-24 00:21:11,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:11,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862838643] [2024-11-24 00:21:11,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:11,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:11,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:11,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862838643] [2024-11-24 00:21:11,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862838643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:11,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:11,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:21:11,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397109569] [2024-11-24 00:21:11,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:11,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:21:11,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:11,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:21:11,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:21:11,785 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-11-24 00:21:11,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 80 transitions, 471 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:11,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:21:11,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-11-24 00:21:11,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:21:14,155 INFO L124 PetriNetUnfolderBase]: 15658/23320 cut-off events. [2024-11-24 00:21:14,156 INFO L125 PetriNetUnfolderBase]: For 62316/62316 co-relation queries the response was YES. [2024-11-24 00:21:14,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79958 conditions, 23320 events. 15658/23320 cut-off events. For 62316/62316 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 149863 event pairs, 1078 based on Foata normal form. 1146/22795 useless extension candidates. Maximal degree in co-relation 79945. Up to 12242 conditions per place. [2024-11-24 00:21:14,379 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 97 selfloop transitions, 22 changer transitions 0/133 dead transitions. [2024-11-24 00:21:14,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 133 transitions, 1014 flow [2024-11-24 00:21:14,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:21:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:21:14,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2024-11-24 00:21:14,382 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6826923076923077 [2024-11-24 00:21:14,382 INFO L175 Difference]: Start difference. First operand has 56 places, 80 transitions, 471 flow. Second operand 4 states and 142 transitions. [2024-11-24 00:21:14,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 133 transitions, 1014 flow [2024-11-24 00:21:14,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 133 transitions, 977 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-11-24 00:21:14,534 INFO L231 Difference]: Finished difference. Result has 60 places, 95 transitions, 721 flow [2024-11-24 00:21:14,534 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=721, PETRI_PLACES=60, PETRI_TRANSITIONS=95} [2024-11-24 00:21:14,535 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2024-11-24 00:21:14,536 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 95 transitions, 721 flow [2024-11-24 00:21:14,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:21:14,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:21:14,536 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:14,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:21:14,537 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-24 00:21:14,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:14,538 INFO L85 PathProgramCache]: Analyzing trace with hash 428189995, now seen corresponding path program 1 times [2024-11-24 00:21:14,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:14,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590712096] [2024-11-24 00:21:14,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:14,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:14,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:14,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590712096] [2024-11-24 00:21:14,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590712096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:21:14,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836436954] [2024-11-24 00:21:14,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:14,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:14,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:21:14,710 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:21:14,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:21:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:14,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:21:14,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:21:14,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:14,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:21:15,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:15,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836436954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:21:15,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:21:15,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-24 00:21:15,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522826339] [2024-11-24 00:21:15,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:21:15,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:21:15,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:15,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:21:15,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:21:15,062 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-11-24 00:21:15,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 95 transitions, 721 flow. Second operand has 9 states, 9 states have (on average 19.333333333333332) internal successors, (174), 9 states have internal predecessors, (174), 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) [2024-11-24 00:21:15,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:21:15,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-11-24 00:21:15,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:21:22,159 INFO L124 PetriNetUnfolderBase]: 54288/82221 cut-off events. [2024-11-24 00:21:22,159 INFO L125 PetriNetUnfolderBase]: For 415578/415578 co-relation queries the response was YES. [2024-11-24 00:21:22,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310750 conditions, 82221 events. 54288/82221 cut-off events. For 415578/415578 co-relation queries the response was YES. Maximal size of possible extension queue 1609. Compared 596416 event pairs, 2547 based on Foata normal form. 6538/83400 useless extension candidates. Maximal degree in co-relation 310734. Up to 35551 conditions per place. [2024-11-24 00:21:22,886 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 210 selfloop transitions, 158 changer transitions 0/382 dead transitions. [2024-11-24 00:21:22,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 382 transitions, 3566 flow [2024-11-24 00:21:22,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:21:22,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-24 00:21:22,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 367 transitions. [2024-11-24 00:21:22,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7841880341880342 [2024-11-24 00:21:22,889 INFO L175 Difference]: Start difference. First operand has 60 places, 95 transitions, 721 flow. Second operand 9 states and 367 transitions. [2024-11-24 00:21:22,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 382 transitions, 3566 flow [2024-11-24 00:21:23,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 382 transitions, 3559 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:21:23,577 INFO L231 Difference]: Finished difference. Result has 73 places, 255 transitions, 3175 flow [2024-11-24 00:21:23,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3175, PETRI_PLACES=73, PETRI_TRANSITIONS=255} [2024-11-24 00:21:23,578 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 22 predicate places. [2024-11-24 00:21:23,578 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 255 transitions, 3175 flow [2024-11-24 00:21:23,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.333333333333332) internal successors, (174), 9 states have internal predecessors, (174), 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) [2024-11-24 00:21:23,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:21:23,579 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:23,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:21:23,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:23,779 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-24 00:21:23,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:23,780 INFO L85 PathProgramCache]: Analyzing trace with hash -690612414, now seen corresponding path program 1 times [2024-11-24 00:21:23,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:23,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732302081] [2024-11-24 00:21:23,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:23,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:23,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:23,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:23,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732302081] [2024-11-24 00:21:23,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732302081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:23,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:23,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:21:23,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647228072] [2024-11-24 00:21:23,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:23,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:21:23,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:23,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:21:23,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:21:23,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-11-24 00:21:23,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 255 transitions, 3175 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2024-11-24 00:21:23,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:21:23,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-11-24 00:21:23,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:21:34,840 INFO L124 PetriNetUnfolderBase]: 64387/97229 cut-off events. [2024-11-24 00:21:34,841 INFO L125 PetriNetUnfolderBase]: For 844602/844602 co-relation queries the response was YES. [2024-11-24 00:21:35,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442871 conditions, 97229 events. 64387/97229 cut-off events. For 844602/844602 co-relation queries the response was YES. Maximal size of possible extension queue 1940. Compared 720138 event pairs, 3411 based on Foata normal form. 834/92128 useless extension candidates. Maximal degree in co-relation 442848. Up to 55766 conditions per place. [2024-11-24 00:21:35,608 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 236 selfloop transitions, 129 changer transitions 0/379 dead transitions. [2024-11-24 00:21:35,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 379 transitions, 5125 flow [2024-11-24 00:21:35,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:21:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 00:21:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 177 transitions. [2024-11-24 00:21:35,610 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6807692307692308 [2024-11-24 00:21:35,610 INFO L175 Difference]: Start difference. First operand has 73 places, 255 transitions, 3175 flow. Second operand 5 states and 177 transitions. [2024-11-24 00:21:35,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 379 transitions, 5125 flow [2024-11-24 00:21:39,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 379 transitions, 5028 flow, removed 45 selfloop flow, removed 1 redundant places. [2024-11-24 00:21:39,032 INFO L231 Difference]: Finished difference. Result has 79 places, 319 transitions, 4541 flow [2024-11-24 00:21:39,032 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3114, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4541, PETRI_PLACES=79, PETRI_TRANSITIONS=319} [2024-11-24 00:21:39,033 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 28 predicate places. [2024-11-24 00:21:39,033 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 319 transitions, 4541 flow [2024-11-24 00:21:39,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2024-11-24 00:21:39,033 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:21:39,033 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:39,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:21:39,034 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-24 00:21:39,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:39,034 INFO L85 PathProgramCache]: Analyzing trace with hash 671351268, now seen corresponding path program 1 times [2024-11-24 00:21:39,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:39,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328029658] [2024-11-24 00:21:39,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:39,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:39,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:39,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:39,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328029658] [2024-11-24 00:21:39,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328029658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:21:39,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11680931] [2024-11-24 00:21:39,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:39,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:39,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:21:39,153 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:21:39,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138bed2a-49c4-4ce8-8e2e-230faf2c74ef/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:21:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:39,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:21:39,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:21:39,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:39,259 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:21:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:39,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11680931] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:21:39,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:21:39,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-24 00:21:39,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99615834] [2024-11-24 00:21:39,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:21:39,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:21:39,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:39,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:21:39,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:21:39,315 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-11-24 00:21:39,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 319 transitions, 4541 flow. Second operand has 9 states, 9 states have (on average 20.0) internal successors, (180), 9 states have internal predecessors, (180), 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) [2024-11-24 00:21:39,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:21:39,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-11-24 00:21:39,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand