./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 287b872f435ea31dbbf77f267944e24b96122b5f745db0674c91555289f3b84c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:08:20,370 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:08:20,483 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-27 20:08:20,498 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:08:20,498 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:08:20,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:08:20,560 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:08:20,560 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:08:20,562 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:08:20,562 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:08:20,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:08:20,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:08:20,562 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:08:20,563 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:08:20,563 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:08:20,563 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:08:20,563 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:08:20,563 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:08:20,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:08:20,564 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:08:20,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:08:20,564 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:08:20,564 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:08:20,564 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:08:20,564 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 20:08:20,564 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:08:20,564 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:08:20,564 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:08:20,565 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:08:20,565 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:08:20,565 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:08:20,565 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:08:20,565 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:08:20,565 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:08:20,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:08:20,565 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:08:20,566 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:08:20,566 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:08:20,566 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:08:20,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:08:20,566 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:08:20,566 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:08:20,566 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:08:20,566 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:08:20,567 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:08:20,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:08:20,567 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:08:20,567 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:08:20,567 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:08:20,567 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:08:20,567 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_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 287b872f435ea31dbbf77f267944e24b96122b5f745db0674c91555289f3b84c [2024-11-27 20:08:20,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:08:20,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:08:20,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:08:20,926 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:08:20,926 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:08:20,928 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2024-11-27 20:08:24,552 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/data/9b2fd3435/f1d5aaa5641044c7a2bdb04e084609f7/FLAG481096e98 [2024-11-27 20:08:24,926 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:08:24,927 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2024-11-27 20:08:24,936 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/data/9b2fd3435/f1d5aaa5641044c7a2bdb04e084609f7/FLAG481096e98 [2024-11-27 20:08:24,968 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/data/9b2fd3435/f1d5aaa5641044c7a2bdb04e084609f7 [2024-11-27 20:08:24,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:08:24,973 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:08:24,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:08:24,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:08:24,983 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:08:24,984 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:08:24" (1/1) ... [2024-11-27 20:08:24,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29260e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:24, skipping insertion in model container [2024-11-27 20:08:24,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:08:24" (1/1) ... [2024-11-27 20:08:25,017 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:08:25,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:08:25,242 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:08:25,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:08:25,287 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:08:25,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:25 WrapperNode [2024-11-27 20:08:25,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:08:25,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:08:25,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:08:25,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:08:25,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:25" (1/1) ... [2024-11-27 20:08:25,306 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:25" (1/1) ... [2024-11-27 20:08:25,327 INFO L138 Inliner]: procedures = 19, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2024-11-27 20:08:25,327 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:08:25,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:08:25,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:08:25,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:08:25,339 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:25" (1/1) ... [2024-11-27 20:08:25,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:25" (1/1) ... [2024-11-27 20:08:25,341 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:25" (1/1) ... [2024-11-27 20:08:25,357 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]. [2024-11-27 20:08:25,357 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:25" (1/1) ... [2024-11-27 20:08:25,358 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:25" (1/1) ... [2024-11-27 20:08:25,363 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:25" (1/1) ... [2024-11-27 20:08:25,364 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:25" (1/1) ... [2024-11-27 20:08:25,368 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:25" (1/1) ... [2024-11-27 20:08:25,370 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:25" (1/1) ... [2024-11-27 20:08:25,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:25" (1/1) ... [2024-11-27 20:08:25,373 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:08:25,374 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:08:25,374 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:08:25,375 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:08:25,376 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:25" (1/1) ... [2024-11-27 20:08:25,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:08:25,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:08:25,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:08:25,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:08:25,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:08:25,467 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 20:08:25,467 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 20:08:25,467 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 20:08:25,468 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 20:08:25,468 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-27 20:08:25,468 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-27 20:08:25,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:08:25,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:08:25,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:08:25,470 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:08:25,592 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:08:25,595 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:08:25,931 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:08:25,931 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:08:26,201 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:08:26,205 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:08:26,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:08:26 BoogieIcfgContainer [2024-11-27 20:08:26,206 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:08:26,209 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:08:26,211 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:08:26,217 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:08:26,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:08:24" (1/3) ... [2024-11-27 20:08:26,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a46f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:08:26, skipping insertion in model container [2024-11-27 20:08:26,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:25" (2/3) ... [2024-11-27 20:08:26,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a46f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:08:26, skipping insertion in model container [2024-11-27 20:08:26,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:08:26" (3/3) ... [2024-11-27 20:08:26,220 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2024-11-27 20:08:26,240 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:08:26,242 INFO L151 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. [2024-11-27 20:08:26,242 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:08:26,361 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-27 20:08:26,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2024-11-27 20:08:26,487 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2024-11-27 20:08:26,492 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-27 20:08:26,502 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 120 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. [2024-11-27 20:08:26,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2024-11-27 20:08:26,507 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 41 transitions, 94 flow [2024-11-27 20:08:26,518 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:08:26,533 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;@48b3d865, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:08:26,533 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-27 20:08:26,545 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:08:26,545 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-11-27 20:08:26,546 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:08:26,546 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:08:26,547 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:08:26,547 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-27 20:08:26,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:26,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2132273043, now seen corresponding path program 1 times [2024-11-27 20:08:26,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:26,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770738463] [2024-11-27 20:08:26,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:26,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:26,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:26,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:26,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770738463] [2024-11-27 20:08:26,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770738463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:08:27,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:08:27,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:08:27,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921490438] [2024-11-27 20:08:27,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:08:27,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:08:27,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:27,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:08:27,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:27,073 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-27 20:08:27,077 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) [2024-11-27 20:08:27,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:08:27,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-27 20:08:27,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:08:27,934 INFO L124 PetriNetUnfolderBase]: 1427/2351 cut-off events. [2024-11-27 20:08:27,935 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-27 20:08:27,952 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 14674 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. [2024-11-27 20:08:27,978 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 34 selfloop transitions, 9 changer transitions 0/58 dead transitions. [2024-11-27 20:08:27,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 223 flow [2024-11-27 20:08:27,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:08:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:08:27,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-27 20:08:28,002 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7163120567375887 [2024-11-27 20:08:28,005 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 94 flow. Second operand 3 states and 101 transitions. [2024-11-27 20:08:28,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 223 flow [2024-11-27 20:08:28,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 213 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 20:08:28,033 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 156 flow [2024-11-27 20:08:28,037 INFO L262 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} [2024-11-27 20:08:28,045 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2024-11-27 20:08:28,046 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 156 flow [2024-11-27 20:08:28,047 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) [2024-11-27 20:08:28,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:08:28,048 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:08:28,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:08:28,048 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-27 20:08:28,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:28,050 INFO L85 PathProgramCache]: Analyzing trace with hash -2132273042, now seen corresponding path program 1 times [2024-11-27 20:08:28,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:28,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357944556] [2024-11-27 20:08:28,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:28,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:28,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:28,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357944556] [2024-11-27 20:08:28,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357944556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:08:28,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:08:28,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:08:28,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042955147] [2024-11-27 20:08:28,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:08:28,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:08:28,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:28,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:08:28,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:28,327 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-27 20:08:28,329 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) [2024-11-27 20:08:28,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:08:28,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-27 20:08:28,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:08:29,087 INFO L124 PetriNetUnfolderBase]: 2294/3620 cut-off events. [2024-11-27 20:08:29,088 INFO L125 PetriNetUnfolderBase]: For 2327/2327 co-relation queries the response was YES. [2024-11-27 20:08:29,101 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 20974 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. [2024-11-27 20:08:29,135 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 42 selfloop transitions, 9 changer transitions 0/66 dead transitions. [2024-11-27 20:08:29,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 66 transitions, 321 flow [2024-11-27 20:08:29,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:08:29,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:08:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-27 20:08:29,140 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7163120567375887 [2024-11-27 20:08:29,140 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 156 flow. Second operand 3 states and 101 transitions. [2024-11-27 20:08:29,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 66 transitions, 321 flow [2024-11-27 20:08:29,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:08:29,168 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 222 flow [2024-11-27 20:08:29,169 INFO L262 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} [2024-11-27 20:08:29,170 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-27 20:08:29,170 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 222 flow [2024-11-27 20:08:29,171 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) [2024-11-27 20:08:29,171 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:08:29,171 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:08:29,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:08:29,172 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-27 20:08:29,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:29,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1407799241, now seen corresponding path program 1 times [2024-11-27 20:08:29,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:29,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829473867] [2024-11-27 20:08:29,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:29,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:29,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:29,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829473867] [2024-11-27 20:08:29,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829473867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:08:29,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:08:29,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:08:29,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471520777] [2024-11-27 20:08:29,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:08:29,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:08:29,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:29,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:08:29,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:29,363 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-27 20:08:29,364 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) [2024-11-27 20:08:29,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:08:29,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-27 20:08:29,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:08:30,096 INFO L124 PetriNetUnfolderBase]: 2661/4080 cut-off events. [2024-11-27 20:08:30,097 INFO L125 PetriNetUnfolderBase]: For 3833/4463 co-relation queries the response was YES. [2024-11-27 20:08:30,108 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 23933 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. [2024-11-27 20:08:30,136 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 60 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-11-27 20:08:30,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 76 transitions, 445 flow [2024-11-27 20:08:30,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:08:30,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:08:30,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-11-27 20:08:30,138 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-27 20:08:30,138 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 222 flow. Second operand 3 states and 94 transitions. [2024-11-27 20:08:30,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 76 transitions, 445 flow [2024-11-27 20:08:30,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 76 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:08:30,150 INFO L231 Difference]: Finished difference. Result has 51 places, 55 transitions, 226 flow [2024-11-27 20:08:30,150 INFO L262 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} [2024-11-27 20:08:30,153 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2024-11-27 20:08:30,153 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 55 transitions, 226 flow [2024-11-27 20:08:30,153 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) [2024-11-27 20:08:30,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:08:30,154 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:08:30,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:08:30,154 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-27 20:08:30,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:30,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1842130872, now seen corresponding path program 1 times [2024-11-27 20:08:30,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:30,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460007656] [2024-11-27 20:08:30,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:30,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:30,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:30,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:30,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460007656] [2024-11-27 20:08:30,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460007656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:08:30,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906997224] [2024-11-27 20:08:30,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:30,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:08:30,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:08:30,369 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:08:30,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:08:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:30,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:08:30,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:08:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:30,606 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:08:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:30,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906997224] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:08:30,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:08:30,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-27 20:08:30,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74401978] [2024-11-27 20:08:30,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:08:30,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:08:30,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:30,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:08:30,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:08:30,696 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-27 20:08:30,697 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) [2024-11-27 20:08:30,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:08:30,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-27 20:08:30,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:08:31,929 INFO L124 PetriNetUnfolderBase]: 4322/7382 cut-off events. [2024-11-27 20:08:31,930 INFO L125 PetriNetUnfolderBase]: For 5320/5320 co-relation queries the response was YES. [2024-11-27 20:08:31,947 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 49134 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. [2024-11-27 20:08:32,003 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 86 selfloop transitions, 40 changer transitions 0/143 dead transitions. [2024-11-27 20:08:32,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 143 transitions, 801 flow [2024-11-27 20:08:32,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:08:32,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 20:08:32,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 248 transitions. [2024-11-27 20:08:32,010 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7537993920972644 [2024-11-27 20:08:32,010 INFO L175 Difference]: Start difference. First operand has 51 places, 55 transitions, 226 flow. Second operand 7 states and 248 transitions. [2024-11-27 20:08:32,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 143 transitions, 801 flow [2024-11-27 20:08:32,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 143 transitions, 795 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:08:32,021 INFO L231 Difference]: Finished difference. Result has 59 places, 91 transitions, 620 flow [2024-11-27 20:08:32,023 INFO L262 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} [2024-11-27 20:08:32,024 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2024-11-27 20:08:32,025 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 91 transitions, 620 flow [2024-11-27 20:08:32,025 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) [2024-11-27 20:08:32,025 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:08:32,026 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:08:32,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:08:32,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-27 20:08:32,226 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-27 20:08:32,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:32,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1935152813, now seen corresponding path program 1 times [2024-11-27 20:08:32,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:32,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635424950] [2024-11-27 20:08:32,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:32,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:32,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:32,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635424950] [2024-11-27 20:08:32,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635424950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:08:32,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:08:32,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:08:32,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390887279] [2024-11-27 20:08:32,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:08:32,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:08:32,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:32,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:08:32,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:32,363 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-27 20:08:32,363 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) [2024-11-27 20:08:32,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:08:32,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-27 20:08:32,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:08:33,653 INFO L124 PetriNetUnfolderBase]: 5708/8921 cut-off events. [2024-11-27 20:08:33,654 INFO L125 PetriNetUnfolderBase]: For 23783/23819 co-relation queries the response was YES. [2024-11-27 20:08:33,679 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 58726 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. [2024-11-27 20:08:33,743 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 104 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2024-11-27 20:08:33,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 122 transitions, 1057 flow [2024-11-27 20:08:33,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:08:33,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:08:33,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-11-27 20:08:33,749 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6524822695035462 [2024-11-27 20:08:33,749 INFO L175 Difference]: Start difference. First operand has 59 places, 91 transitions, 620 flow. Second operand 3 states and 92 transitions. [2024-11-27 20:08:33,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 122 transitions, 1057 flow [2024-11-27 20:08:33,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 122 transitions, 1045 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-27 20:08:33,812 INFO L231 Difference]: Finished difference. Result has 63 places, 88 transitions, 593 flow [2024-11-27 20:08:33,816 INFO L262 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} [2024-11-27 20:08:33,817 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 16 predicate places. [2024-11-27 20:08:33,817 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 88 transitions, 593 flow [2024-11-27 20:08:33,817 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) [2024-11-27 20:08:33,817 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:08:33,817 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:08:33,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:08:33,818 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-27 20:08:33,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:33,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1606657328, now seen corresponding path program 1 times [2024-11-27 20:08:33,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:33,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456316303] [2024-11-27 20:08:33,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:33,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:08:34,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:34,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456316303] [2024-11-27 20:08:34,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456316303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:08:34,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369032730] [2024-11-27 20:08:34,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:34,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:08:34,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:08:34,109 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:08:34,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:08:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:34,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:08:34,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:08:34,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:08:34,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:08:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:08:34,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369032730] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:08:34,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:08:34,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2024-11-27 20:08:34,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609907760] [2024-11-27 20:08:34,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:08:34,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:08:34,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:34,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:08:34,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:08:34,522 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-27 20:08:34,522 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) [2024-11-27 20:08:34,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:08:34,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-27 20:08:34,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:08:36,251 INFO L124 PetriNetUnfolderBase]: 6018/11458 cut-off events. [2024-11-27 20:08:36,251 INFO L125 PetriNetUnfolderBase]: For 46281/46281 co-relation queries the response was YES. [2024-11-27 20:08:36,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37274 conditions, 11458 events. 6018/11458 cut-off events. For 46281/46281 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 92856 event pairs, 396 based on Foata normal form. 1658/12484 useless extension candidates. Maximal degree in co-relation 25460. Up to 3214 conditions per place. [2024-11-27 20:08:36,359 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 76 selfloop transitions, 50 changer transitions 0/145 dead transitions. [2024-11-27 20:08:36,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 145 transitions, 1176 flow [2024-11-27 20:08:36,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:08:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 20:08:36,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 233 transitions. [2024-11-27 20:08:36,361 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6196808510638298 [2024-11-27 20:08:36,362 INFO L175 Difference]: Start difference. First operand has 63 places, 88 transitions, 593 flow. Second operand 8 states and 233 transitions. [2024-11-27 20:08:36,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 145 transitions, 1176 flow [2024-11-27 20:08:36,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 145 transitions, 1170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:08:36,460 INFO L231 Difference]: Finished difference. Result has 70 places, 108 transitions, 1038 flow [2024-11-27 20:08:36,460 INFO L262 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} [2024-11-27 20:08:36,461 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2024-11-27 20:08:36,461 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 108 transitions, 1038 flow [2024-11-27 20:08:36,461 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) [2024-11-27 20:08:36,462 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:08:36,462 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:08:36,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:08:36,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-27 20:08:36,679 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-27 20:08:36,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:36,680 INFO L85 PathProgramCache]: Analyzing trace with hash -753043994, now seen corresponding path program 1 times [2024-11-27 20:08:36,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:36,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756748997] [2024-11-27 20:08:36,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:36,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:36,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:36,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:36,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756748997] [2024-11-27 20:08:36,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756748997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:08:36,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453170196] [2024-11-27 20:08:36,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:36,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:08:36,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:08:36,908 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:08:36,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:08:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:37,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:08:37,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:08:37,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:37,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:08:37,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:37,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453170196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:08:37,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:08:37,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-27 20:08:37,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883718185] [2024-11-27 20:08:37,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:08:37,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:08:37,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:37,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:08:37,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:08:37,203 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-27 20:08:37,203 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) [2024-11-27 20:08:37,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:08:37,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-27 20:08:37,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:08:41,391 INFO L124 PetriNetUnfolderBase]: 16319/32379 cut-off events. [2024-11-27 20:08:41,391 INFO L125 PetriNetUnfolderBase]: For 244662/244662 co-relation queries the response was YES. [2024-11-27 20:08:41,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115132 conditions, 32379 events. 16319/32379 cut-off events. For 244662/244662 co-relation queries the response was YES. Maximal size of possible extension queue 1083. Compared 304338 event pairs, 347 based on Foata normal form. 4060/34077 useless extension candidates. Maximal degree in co-relation 105542. Up to 5214 conditions per place. [2024-11-27 20:08:41,784 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 182 selfloop transitions, 162 changer transitions 0/363 dead transitions. [2024-11-27 20:08:41,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 363 transitions, 3886 flow [2024-11-27 20:08:41,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:08:41,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 20:08:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 385 transitions. [2024-11-27 20:08:41,787 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7446808510638298 [2024-11-27 20:08:41,787 INFO L175 Difference]: Start difference. First operand has 70 places, 108 transitions, 1038 flow. Second operand 11 states and 385 transitions. [2024-11-27 20:08:41,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 363 transitions, 3886 flow [2024-11-27 20:08:42,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 363 transitions, 3695 flow, removed 93 selfloop flow, removed 3 redundant places. [2024-11-27 20:08:42,826 INFO L231 Difference]: Finished difference. Result has 85 places, 246 transitions, 3340 flow [2024-11-27 20:08:42,827 INFO L262 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} [2024-11-27 20:08:42,827 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 38 predicate places. [2024-11-27 20:08:42,828 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 246 transitions, 3340 flow [2024-11-27 20:08:42,828 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) [2024-11-27 20:08:42,828 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:08:42,829 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:08:42,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:08:43,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 20:08:43,029 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-27 20:08:43,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:43,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1816390510, now seen corresponding path program 1 times [2024-11-27 20:08:43,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:43,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048034219] [2024-11-27 20:08:43,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:43,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:43,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:08:43,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:43,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048034219] [2024-11-27 20:08:43,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048034219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:08:43,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506735739] [2024-11-27 20:08:43,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:43,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:08:43,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:08:43,146 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:08:43,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:08:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:43,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:08:43,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:08:43,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:43,282 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:08:43,342 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:08:43,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506735739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:08:43,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:08:43,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 6 [2024-11-27 20:08:43,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946072105] [2024-11-27 20:08:43,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:08:43,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:08:43,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:43,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:08:43,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:08:43,356 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-27 20:08:43,356 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) [2024-11-27 20:08:43,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:08:43,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-27 20:08:43,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:08:55,444 INFO L124 PetriNetUnfolderBase]: 42967/83841 cut-off events. [2024-11-27 20:08:55,444 INFO L125 PetriNetUnfolderBase]: For 820432/820432 co-relation queries the response was YES. [2024-11-27 20:08:55,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352369 conditions, 83841 events. 42967/83841 cut-off events. For 820432/820432 co-relation queries the response was YES. Maximal size of possible extension queue 2654. Compared 886369 event pairs, 1189 based on Foata normal form. 3574/80945 useless extension candidates. Maximal degree in co-relation 328514. Up to 20205 conditions per place. [2024-11-27 20:08:56,434 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 413 selfloop transitions, 320 changer transitions 0/752 dead transitions. [2024-11-27 20:08:56,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 752 transitions, 11783 flow [2024-11-27 20:08:56,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:08:56,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 20:08:56,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2024-11-27 20:08:56,436 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7173252279635258 [2024-11-27 20:08:56,436 INFO L175 Difference]: Start difference. First operand has 85 places, 246 transitions, 3340 flow. Second operand 7 states and 236 transitions. [2024-11-27 20:08:56,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 752 transitions, 11783 flow [2024-11-27 20:09:05,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 752 transitions, 11252 flow, removed 263 selfloop flow, removed 1 redundant places. [2024-11-27 20:09:05,682 INFO L231 Difference]: Finished difference. Result has 94 places, 541 transitions, 9411 flow [2024-11-27 20:09:05,682 INFO L262 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} [2024-11-27 20:09:05,683 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 47 predicate places. [2024-11-27 20:09:05,684 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 541 transitions, 9411 flow [2024-11-27 20:09:05,684 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) [2024-11-27 20:09:05,684 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:09:05,684 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:05,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:09:05,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:05,887 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-27 20:09:05,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:05,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2093783474, now seen corresponding path program 1 times [2024-11-27 20:09:05,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:05,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126574250] [2024-11-27 20:09:05,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:05,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:09:06,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:06,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126574250] [2024-11-27 20:09:06,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126574250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:06,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319209233] [2024-11-27 20:09:06,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:06,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:06,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:06,137 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:06,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbb98c32-c8d5-4f3e-86de-d5851075a02e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:09:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:06,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 20:09:06,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:09:06,341 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:09:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:09:06,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319209233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:09:06,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:09:06,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 10 [2024-11-27 20:09:06,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494962135] [2024-11-27 20:09:06,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:09:06,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:09:06,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:06,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:09:06,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:09:06,505 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-27 20:09:06,506 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) [2024-11-27 20:09:06,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:09:06,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-27 20:09:06,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand