./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:57:24,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:57:24,486 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:57:24,493 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:57:24,494 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:57:24,525 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:57:24,526 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:57:24,527 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:57:24,528 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:57:24,529 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:57:24,530 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:57:24,531 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:57:24,531 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:57:24,532 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:57:24,533 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:57:24,534 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:57:24,534 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:57:24,535 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:57:24,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:57:24,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:57:24,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:57:24,538 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:57:24,538 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:57:24,539 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:57:24,539 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:57:24,540 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:57:24,540 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:57:24,541 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:57:24,541 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:57:24,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:57:24,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:57:24,543 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:57:24,544 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:57:24,544 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:57:24,545 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:57:24,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:57:24,546 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:57:24,546 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:57:24,547 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:57:24,548 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:57:24,548 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:57:24,549 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 [2023-11-06 22:57:24,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:57:24,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:57:24,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:57:24,900 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:57:24,902 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:57:24,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2023-11-06 22:57:28,139 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:57:28,375 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:57:28,375 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2023-11-06 22:57:28,384 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/data/a2bbe31b7/91e4da4cad9d4835993baa51e23a4893/FLAGc36f6a19e [2023-11-06 22:57:28,398 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/data/a2bbe31b7/91e4da4cad9d4835993baa51e23a4893 [2023-11-06 22:57:28,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:57:28,403 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:57:28,405 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:57:28,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:57:28,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:57:28,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:28" (1/1) ... [2023-11-06 22:57:28,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34adb634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:28, skipping insertion in model container [2023-11-06 22:57:28,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:28" (1/1) ... [2023-11-06 22:57:28,449 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:57:28,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:57:28,668 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:57:28,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:57:28,711 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:57:28,716 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:57:28,724 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:57:28,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:28 WrapperNode [2023-11-06 22:57:28,725 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:57:28,726 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:57:28,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:57:28,727 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:57:28,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:28" (1/1) ... [2023-11-06 22:57:28,758 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:28" (1/1) ... [2023-11-06 22:57:28,792 INFO L138 Inliner]: procedures = 26, calls = 56, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 289 [2023-11-06 22:57:28,792 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:57:28,793 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:57:28,794 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:57:28,794 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:57:28,803 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:28" (1/1) ... [2023-11-06 22:57:28,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:28" (1/1) ... [2023-11-06 22:57:28,808 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:28" (1/1) ... [2023-11-06 22:57:28,808 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:28" (1/1) ... [2023-11-06 22:57:28,818 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:28" (1/1) ... [2023-11-06 22:57:28,823 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:28" (1/1) ... [2023-11-06 22:57:28,826 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:28" (1/1) ... [2023-11-06 22:57:28,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:28" (1/1) ... [2023-11-06 22:57:28,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:57:28,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:57:28,833 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:57:28,833 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:57:28,834 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:28" (1/1) ... [2023-11-06 22:57:28,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:57:28,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:28,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:57:28,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:57:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:57:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:57:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:57:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:57:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:57:28,925 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:57:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:57:28,926 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:57:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:57:28,926 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:57:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:57:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:57:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:57:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:57:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:57:28,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:57:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:57:28,931 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:57:29,095 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:57:29,097 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:57:29,650 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:57:29,847 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:57:29,847 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-06 22:57:29,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:29 BoogieIcfgContainer [2023-11-06 22:57:29,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:57:29,853 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:57:29,853 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:57:29,856 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:57:29,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:57:28" (1/3) ... [2023-11-06 22:57:29,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6540c11f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:29, skipping insertion in model container [2023-11-06 22:57:29,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:28" (2/3) ... [2023-11-06 22:57:29,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6540c11f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:29, skipping insertion in model container [2023-11-06 22:57:29,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:29" (3/3) ... [2023-11-06 22:57:29,860 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2023-11-06 22:57:29,869 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:57:29,881 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:57:29,881 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-06 22:57:29,881 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:57:29,972 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:57:30,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 262 transitions, 545 flow [2023-11-06 22:57:30,177 INFO L124 PetriNetUnfolderBase]: 18/259 cut-off events. [2023-11-06 22:57:30,177 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:57:30,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 259 events. 18/259 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 256 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 211. Up to 3 conditions per place. [2023-11-06 22:57:30,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 262 transitions, 545 flow [2023-11-06 22:57:30,197 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 235 transitions, 485 flow [2023-11-06 22:57:30,201 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:57:30,219 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 235 transitions, 485 flow [2023-11-06 22:57:30,228 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 235 transitions, 485 flow [2023-11-06 22:57:30,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 235 transitions, 485 flow [2023-11-06 22:57:30,320 INFO L124 PetriNetUnfolderBase]: 17/235 cut-off events. [2023-11-06 22:57:30,321 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:57:30,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 235 events. 17/235 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 253 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 211. Up to 3 conditions per place. [2023-11-06 22:57:30,328 INFO L119 LiptonReduction]: Number of co-enabled transitions 3960 [2023-11-06 22:57:42,056 INFO L134 LiptonReduction]: Checked pairs total: 7333 [2023-11-06 22:57:42,056 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-11-06 22:57:42,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:57:42,078 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@50ee3922, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:57:42,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-11-06 22:57:42,084 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:57:42,084 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:57:42,084 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:57:42,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:42,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:57:42,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:57:42,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:42,092 INFO L85 PathProgramCache]: Analyzing trace with hash 37752, now seen corresponding path program 1 times [2023-11-06 22:57:42,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:42,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640376644] [2023-11-06 22:57:42,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:42,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:42,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:42,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:42,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640376644] [2023-11-06 22:57:42,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640376644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:42,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:42,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:57:42,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463098363] [2023-11-06 22:57:42,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:42,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:42,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:42,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:42,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:42,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 509 [2023-11-06 22:57:42,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 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) [2023-11-06 22:57:42,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:42,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 509 [2023-11-06 22:57:42,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:43,378 INFO L124 PetriNetUnfolderBase]: 2691/3606 cut-off events. [2023-11-06 22:57:43,378 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2023-11-06 22:57:43,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7398 conditions, 3606 events. 2691/3606 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 16201 event pairs, 1768 based on Foata normal form. 0/1393 useless extension candidates. Maximal degree in co-relation 6685. Up to 3603 conditions per place. [2023-11-06 22:57:43,415 INFO L140 encePairwiseOnDemand]: 494/509 looper letters, 38 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2023-11-06 22:57:43,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 189 flow [2023-11-06 22:57:43,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:43,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:43,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 704 transitions. [2023-11-06 22:57:43,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4610347085789129 [2023-11-06 22:57:43,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 704 transitions. [2023-11-06 22:57:43,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 704 transitions. [2023-11-06 22:57:43,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:43,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 704 transitions. [2023-11-06 22:57:43,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 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) [2023-11-06 22:57:43,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 509.0) internal successors, (2036), 4 states have internal predecessors, (2036), 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) [2023-11-06 22:57:43,471 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 509.0) internal successors, (2036), 4 states have internal predecessors, (2036), 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) [2023-11-06 22:57:43,473 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 107 flow. Second operand 3 states and 704 transitions. [2023-11-06 22:57:43,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 189 flow [2023-11-06 22:57:43,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 180 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:57:43,485 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 130 flow [2023-11-06 22:57:43,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2023-11-06 22:57:43,492 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -6 predicate places. [2023-11-06 22:57:43,492 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 130 flow [2023-11-06 22:57:43,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 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) [2023-11-06 22:57:43,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:43,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:57:43,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:57:43,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:57:43,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:43,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1172302, now seen corresponding path program 1 times [2023-11-06 22:57:43,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:43,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089519022] [2023-11-06 22:57:43,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:43,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:43,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:43,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:43,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089519022] [2023-11-06 22:57:43,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089519022] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:43,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475044271] [2023-11-06 22:57:43,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:43,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:43,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:43,639 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:43,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:57:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:43,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:57:43,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:43,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:43,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:43,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475044271] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:57:43,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:57:43,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:57:43,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305277987] [2023-11-06 22:57:43,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:57:43,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:57:43,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:43,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:57:43,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:57:43,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 509 [2023-11-06 22:57:43,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 130 flow. Second operand has 7 states, 7 states have (on average 218.14285714285714) internal successors, (1527), 7 states have internal predecessors, (1527), 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) [2023-11-06 22:57:43,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:43,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 509 [2023-11-06 22:57:43,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:44,706 INFO L124 PetriNetUnfolderBase]: 2703/3624 cut-off events. [2023-11-06 22:57:44,706 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-06 22:57:44,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7410 conditions, 3624 events. 2703/3624 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 16298 event pairs, 1768 based on Foata normal form. 0/1404 useless extension candidates. Maximal degree in co-relation 7305. Up to 3604 conditions per place. [2023-11-06 22:57:44,739 INFO L140 encePairwiseOnDemand]: 500/509 looper letters, 36 selfloop transitions, 25 changer transitions 0/62 dead transitions. [2023-11-06 22:57:44,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 330 flow [2023-11-06 22:57:44,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:57:44,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:57:44,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1586 transitions. [2023-11-06 22:57:44,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451305079988774 [2023-11-06 22:57:44,746 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1586 transitions. [2023-11-06 22:57:44,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1586 transitions. [2023-11-06 22:57:44,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:44,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1586 transitions. [2023-11-06 22:57:44,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 226.57142857142858) internal successors, (1586), 7 states have internal predecessors, (1586), 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) [2023-11-06 22:57:44,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 509.0) internal successors, (4072), 8 states have internal predecessors, (4072), 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) [2023-11-06 22:57:44,765 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 509.0) internal successors, (4072), 8 states have internal predecessors, (4072), 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) [2023-11-06 22:57:44,766 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 130 flow. Second operand 7 states and 1586 transitions. [2023-11-06 22:57:44,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 330 flow [2023-11-06 22:57:44,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:57:44,769 INFO L231 Difference]: Finished difference. Result has 51 places, 62 transitions, 284 flow [2023-11-06 22:57:44,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=284, PETRI_PLACES=51, PETRI_TRANSITIONS=62} [2023-11-06 22:57:44,770 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-11-06 22:57:44,770 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 62 transitions, 284 flow [2023-11-06 22:57:44,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 218.14285714285714) internal successors, (1527), 7 states have internal predecessors, (1527), 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) [2023-11-06 22:57:44,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:44,772 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-06 22:57:44,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:57:44,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:44,980 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:57:44,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:44,981 INFO L85 PathProgramCache]: Analyzing trace with hash 36342968, now seen corresponding path program 1 times [2023-11-06 22:57:44,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:44,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12190056] [2023-11-06 22:57:44,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:44,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:45,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:57:45,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:45,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12190056] [2023-11-06 22:57:45,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12190056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:45,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:45,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:45,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405258532] [2023-11-06 22:57:45,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:45,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:45,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:45,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:45,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:45,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 509 [2023-11-06 22:57:45,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 62 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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) [2023-11-06 22:57:45,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:45,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 509 [2023-11-06 22:57:45,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:45,760 INFO L124 PetriNetUnfolderBase]: 2697/3616 cut-off events. [2023-11-06 22:57:45,760 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-06 22:57:45,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7419 conditions, 3616 events. 2697/3616 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 16289 event pairs, 1768 based on Foata normal form. 0/1407 useless extension candidates. Maximal degree in co-relation 7354. Up to 3598 conditions per place. [2023-11-06 22:57:45,798 INFO L140 encePairwiseOnDemand]: 505/509 looper letters, 47 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2023-11-06 22:57:45,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 336 flow [2023-11-06 22:57:45,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:45,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:45,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 690 transitions. [2023-11-06 22:57:45,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518664047151277 [2023-11-06 22:57:45,802 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 690 transitions. [2023-11-06 22:57:45,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 690 transitions. [2023-11-06 22:57:45,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:45,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 690 transitions. [2023-11-06 22:57:45,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 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) [2023-11-06 22:57:45,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 509.0) internal successors, (2036), 4 states have internal predecessors, (2036), 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) [2023-11-06 22:57:45,813 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 509.0) internal successors, (2036), 4 states have internal predecessors, (2036), 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) [2023-11-06 22:57:45,813 INFO L175 Difference]: Start difference. First operand has 51 places, 62 transitions, 284 flow. Second operand 3 states and 690 transitions. [2023-11-06 22:57:45,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 336 flow [2023-11-06 22:57:45,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 54 transitions, 310 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 22:57:45,817 INFO L231 Difference]: Finished difference. Result has 49 places, 54 transitions, 216 flow [2023-11-06 22:57:45,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=49, PETRI_TRANSITIONS=54} [2023-11-06 22:57:45,819 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-11-06 22:57:45,819 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 54 transitions, 216 flow [2023-11-06 22:57:45,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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) [2023-11-06 22:57:45,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:45,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:57:45,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:57:45,821 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:57:45,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:45,821 INFO L85 PathProgramCache]: Analyzing trace with hash 574319380, now seen corresponding path program 1 times [2023-11-06 22:57:45,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:45,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142566660] [2023-11-06 22:57:45,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:45,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:45,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142566660] [2023-11-06 22:57:45,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142566660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:45,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:45,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:45,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004652668] [2023-11-06 22:57:45,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:45,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:45,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:45,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:45,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:57:46,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 509 [2023-11-06 22:57:46,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 54 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 214.25) internal successors, (857), 4 states have internal predecessors, (857), 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) [2023-11-06 22:57:46,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:46,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 509 [2023-11-06 22:57:46,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:46,772 INFO L124 PetriNetUnfolderBase]: 2728/3685 cut-off events. [2023-11-06 22:57:46,772 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-11-06 22:57:46,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7584 conditions, 3685 events. 2728/3685 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 16715 event pairs, 1791 based on Foata normal form. 44/1507 useless extension candidates. Maximal degree in co-relation 7495. Up to 3614 conditions per place. [2023-11-06 22:57:46,815 INFO L140 encePairwiseOnDemand]: 498/509 looper letters, 73 selfloop transitions, 3 changer transitions 1/78 dead transitions. [2023-11-06 22:57:46,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 78 transitions, 475 flow [2023-11-06 22:57:46,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:57:46,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:57:46,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 915 transitions. [2023-11-06 22:57:46,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494106090373281 [2023-11-06 22:57:46,822 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 915 transitions. [2023-11-06 22:57:46,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 915 transitions. [2023-11-06 22:57:46,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:46,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 915 transitions. [2023-11-06 22:57:46,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 228.75) internal successors, (915), 4 states have internal predecessors, (915), 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) [2023-11-06 22:57:46,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 509.0) internal successors, (2545), 5 states have internal predecessors, (2545), 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) [2023-11-06 22:57:46,837 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 509.0) internal successors, (2545), 5 states have internal predecessors, (2545), 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) [2023-11-06 22:57:46,837 INFO L175 Difference]: Start difference. First operand has 49 places, 54 transitions, 216 flow. Second operand 4 states and 915 transitions. [2023-11-06 22:57:46,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 78 transitions, 475 flow [2023-11-06 22:57:46,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 78 transitions, 453 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:57:46,845 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 227 flow [2023-11-06 22:57:46,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=227, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2023-11-06 22:57:46,849 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-11-06 22:57:46,851 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 227 flow [2023-11-06 22:57:46,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 214.25) internal successors, (857), 4 states have internal predecessors, (857), 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) [2023-11-06 22:57:46,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:46,852 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:57:46,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:57:46,853 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:57:46,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:46,854 INFO L85 PathProgramCache]: Analyzing trace with hash 565917188, now seen corresponding path program 2 times [2023-11-06 22:57:46,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:46,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008755547] [2023-11-06 22:57:46,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:46,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:47,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:47,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008755547] [2023-11-06 22:57:47,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008755547] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:47,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920923610] [2023-11-06 22:57:47,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:57:47,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:47,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:47,051 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:47,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:57:47,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:57:47,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:57:47,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:57:47,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:47,178 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:57:47,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:57:47,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920923610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:47,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:47,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:57:47,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192710209] [2023-11-06 22:57:47,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:47,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:47,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:47,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:47,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:57:47,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 509 [2023-11-06 22:57:47,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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) [2023-11-06 22:57:47,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:47,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 509 [2023-11-06 22:57:47,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:47,818 INFO L124 PetriNetUnfolderBase]: 2728/3684 cut-off events. [2023-11-06 22:57:47,818 INFO L125 PetriNetUnfolderBase]: For 365/365 co-relation queries the response was YES. [2023-11-06 22:57:47,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9153 conditions, 3684 events. 2728/3684 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 16683 event pairs, 1791 based on Foata normal form. 1/1459 useless extension candidates. Maximal degree in co-relation 9073. Up to 3677 conditions per place. [2023-11-06 22:57:47,854 INFO L140 encePairwiseOnDemand]: 506/509 looper letters, 46 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2023-11-06 22:57:47,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 53 transitions, 321 flow [2023-11-06 22:57:47,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:47,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:47,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 700 transitions. [2023-11-06 22:57:47,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45841519318926 [2023-11-06 22:57:47,859 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 700 transitions. [2023-11-06 22:57:47,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 700 transitions. [2023-11-06 22:57:47,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:47,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 700 transitions. [2023-11-06 22:57:47,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 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) [2023-11-06 22:57:47,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 509.0) internal successors, (2036), 4 states have internal predecessors, (2036), 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) [2023-11-06 22:57:47,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 509.0) internal successors, (2036), 4 states have internal predecessors, (2036), 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) [2023-11-06 22:57:47,869 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 227 flow. Second operand 3 states and 700 transitions. [2023-11-06 22:57:47,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 53 transitions, 321 flow [2023-11-06 22:57:47,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 315 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:57:47,872 INFO L231 Difference]: Finished difference. Result has 51 places, 53 transitions, 223 flow [2023-11-06 22:57:47,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=51, PETRI_TRANSITIONS=53} [2023-11-06 22:57:47,876 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-11-06 22:57:47,876 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 53 transitions, 223 flow [2023-11-06 22:57:47,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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) [2023-11-06 22:57:47,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:47,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:47,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:48,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:48,086 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:57:48,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:48,087 INFO L85 PathProgramCache]: Analyzing trace with hash 371967488, now seen corresponding path program 1 times [2023-11-06 22:57:48,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:48,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476834711] [2023-11-06 22:57:48,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:48,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:57:48,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:48,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476834711] [2023-11-06 22:57:48,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476834711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:48,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:48,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:48,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490136194] [2023-11-06 22:57:48,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:48,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:48,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:48,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:48,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:48,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 509 [2023-11-06 22:57:48,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 53 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 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) [2023-11-06 22:57:48,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:48,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 509 [2023-11-06 22:57:48,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:48,885 INFO L124 PetriNetUnfolderBase]: 2996/4209 cut-off events. [2023-11-06 22:57:48,885 INFO L125 PetriNetUnfolderBase]: For 273/273 co-relation queries the response was YES. [2023-11-06 22:57:48,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10081 conditions, 4209 events. 2996/4209 cut-off events. For 273/273 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 19136 event pairs, 1792 based on Foata normal form. 0/1923 useless extension candidates. Maximal degree in co-relation 9999. Up to 3348 conditions per place. [2023-11-06 22:57:48,918 INFO L140 encePairwiseOnDemand]: 503/509 looper letters, 72 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2023-11-06 22:57:48,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 76 transitions, 436 flow [2023-11-06 22:57:48,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:48,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:48,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 734 transitions. [2023-11-06 22:57:48,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48068107400130977 [2023-11-06 22:57:48,924 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 734 transitions. [2023-11-06 22:57:48,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 734 transitions. [2023-11-06 22:57:48,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:48,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 734 transitions. [2023-11-06 22:57:48,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 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) [2023-11-06 22:57:48,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 509.0) internal successors, (2036), 4 states have internal predecessors, (2036), 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) [2023-11-06 22:57:48,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 509.0) internal successors, (2036), 4 states have internal predecessors, (2036), 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) [2023-11-06 22:57:48,934 INFO L175 Difference]: Start difference. First operand has 51 places, 53 transitions, 223 flow. Second operand 3 states and 734 transitions. [2023-11-06 22:57:48,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 76 transitions, 436 flow [2023-11-06 22:57:48,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 76 transitions, 424 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:57:48,938 INFO L231 Difference]: Finished difference. Result has 52 places, 56 transitions, 245 flow [2023-11-06 22:57:48,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=245, PETRI_PLACES=52, PETRI_TRANSITIONS=56} [2023-11-06 22:57:48,941 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-11-06 22:57:48,941 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 56 transitions, 245 flow [2023-11-06 22:57:48,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 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) [2023-11-06 22:57:48,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:48,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:48,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:57:48,943 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:57:48,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:48,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1353908717, now seen corresponding path program 1 times [2023-11-06 22:57:48,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:48,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991631840] [2023-11-06 22:57:48,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:48,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:49,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:49,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991631840] [2023-11-06 22:57:49,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991631840] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:49,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104474184] [2023-11-06 22:57:49,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:49,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:49,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:49,111 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:49,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:57:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:49,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:57:49,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:49,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:49,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:49,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104474184] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:57:49,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:57:49,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-06 22:57:49,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552799701] [2023-11-06 22:57:49,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:57:49,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:57:49,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:49,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:57:49,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:57:49,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 509 [2023-11-06 22:57:49,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 56 transitions, 245 flow. Second operand has 12 states, 12 states have (on average 208.41666666666666) internal successors, (2501), 12 states have internal predecessors, (2501), 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) [2023-11-06 22:57:49,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:49,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 509 [2023-11-06 22:57:49,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:50,605 INFO L124 PetriNetUnfolderBase]: 3007/4258 cut-off events. [2023-11-06 22:57:50,605 INFO L125 PetriNetUnfolderBase]: For 1231/1429 co-relation queries the response was YES. [2023-11-06 22:57:50,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11739 conditions, 4258 events. 3007/4258 cut-off events. For 1231/1429 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 20497 event pairs, 249 based on Foata normal form. 598/2689 useless extension candidates. Maximal degree in co-relation 11632. Up to 1836 conditions per place. [2023-11-06 22:57:50,633 INFO L140 encePairwiseOnDemand]: 499/509 looper letters, 118 selfloop transitions, 13 changer transitions 0/132 dead transitions. [2023-11-06 22:57:50,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 132 transitions, 747 flow [2023-11-06 22:57:50,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:57:50,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:57:50,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2193 transitions. [2023-11-06 22:57:50,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4308447937131631 [2023-11-06 22:57:50,643 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2193 transitions. [2023-11-06 22:57:50,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2193 transitions. [2023-11-06 22:57:50,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:50,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2193 transitions. [2023-11-06 22:57:50,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 219.3) internal successors, (2193), 10 states have internal predecessors, (2193), 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) [2023-11-06 22:57:50,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 509.0) internal successors, (5599), 11 states have internal predecessors, (5599), 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) [2023-11-06 22:57:50,663 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 509.0) internal successors, (5599), 11 states have internal predecessors, (5599), 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) [2023-11-06 22:57:50,663 INFO L175 Difference]: Start difference. First operand has 52 places, 56 transitions, 245 flow. Second operand 10 states and 2193 transitions. [2023-11-06 22:57:50,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 132 transitions, 747 flow [2023-11-06 22:57:50,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 132 transitions, 738 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:57:50,668 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 291 flow [2023-11-06 22:57:50,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=291, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2023-11-06 22:57:50,669 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2023-11-06 22:57:50,669 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 291 flow [2023-11-06 22:57:50,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 208.41666666666666) internal successors, (2501), 12 states have internal predecessors, (2501), 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) [2023-11-06 22:57:50,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:50,671 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-06 22:57:50,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:50,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:57:50,876 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:57:50,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:50,877 INFO L85 PathProgramCache]: Analyzing trace with hash 608821671, now seen corresponding path program 1 times [2023-11-06 22:57:50,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:50,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112695604] [2023-11-06 22:57:50,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:50,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:50,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:50,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112695604] [2023-11-06 22:57:50,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112695604] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:50,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188920159] [2023-11-06 22:57:50,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:50,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:50,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:50,984 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:50,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:57:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:51,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:57:51,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:51,116 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:51,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:51,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188920159] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:57:51,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:57:51,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:57:51,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332783937] [2023-11-06 22:57:51,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:57:51,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:57:51,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:51,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:57:51,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:57:51,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 509 [2023-11-06 22:57:51,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 291 flow. Second operand has 13 states, 13 states have (on average 218.15384615384616) internal successors, (2836), 13 states have internal predecessors, (2836), 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) [2023-11-06 22:57:51,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:51,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 509 [2023-11-06 22:57:51,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:52,130 INFO L124 PetriNetUnfolderBase]: 3031/4306 cut-off events. [2023-11-06 22:57:52,131 INFO L125 PetriNetUnfolderBase]: For 3013/3209 co-relation queries the response was YES. [2023-11-06 22:57:52,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11748 conditions, 4306 events. 3031/4306 cut-off events. For 3013/3209 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 20738 event pairs, 2249 based on Foata normal form. 214/2525 useless extension candidates. Maximal degree in co-relation 11464. Up to 4256 conditions per place. [2023-11-06 22:57:52,165 INFO L140 encePairwiseOnDemand]: 503/509 looper letters, 36 selfloop transitions, 45 changer transitions 0/82 dead transitions. [2023-11-06 22:57:52,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 591 flow [2023-11-06 22:57:52,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:57:52,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:57:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2683 transitions. [2023-11-06 22:57:52,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43925998690242307 [2023-11-06 22:57:52,178 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2683 transitions. [2023-11-06 22:57:52,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2683 transitions. [2023-11-06 22:57:52,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:52,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2683 transitions. [2023-11-06 22:57:52,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 223.58333333333334) internal successors, (2683), 12 states have internal predecessors, (2683), 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) [2023-11-06 22:57:52,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 509.0) internal successors, (6617), 13 states have internal predecessors, (6617), 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) [2023-11-06 22:57:52,204 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 509.0) internal successors, (6617), 13 states have internal predecessors, (6617), 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) [2023-11-06 22:57:52,205 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 291 flow. Second operand 12 states and 2683 transitions. [2023-11-06 22:57:52,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 591 flow [2023-11-06 22:57:52,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 82 transitions, 581 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-06 22:57:52,210 INFO L231 Difference]: Finished difference. Result has 74 places, 82 transitions, 563 flow [2023-11-06 22:57:52,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=563, PETRI_PLACES=74, PETRI_TRANSITIONS=82} [2023-11-06 22:57:52,213 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 24 predicate places. [2023-11-06 22:57:52,213 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 82 transitions, 563 flow [2023-11-06 22:57:52,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 218.15384615384616) internal successors, (2836), 13 states have internal predecessors, (2836), 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) [2023-11-06 22:57:52,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:52,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:52,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:52,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:52,422 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:57:52,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:52,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1353908683, now seen corresponding path program 1 times [2023-11-06 22:57:52,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:52,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799431436] [2023-11-06 22:57:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:52,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:52,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:57:52,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:52,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799431436] [2023-11-06 22:57:52,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799431436] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:52,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019227893] [2023-11-06 22:57:52,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:52,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:52,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:52,497 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:52,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:57:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:52,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:57:52,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:52,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:57:52,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:57:52,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019227893] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:57:52,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:57:52,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:57:52,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122560858] [2023-11-06 22:57:52,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:57:52,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:57:52,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:52,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:57:52,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:57:52,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 509 [2023-11-06 22:57:52,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 82 transitions, 563 flow. Second operand has 7 states, 7 states have (on average 225.85714285714286) internal successors, (1581), 7 states have internal predecessors, (1581), 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) [2023-11-06 22:57:52,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:52,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 509 [2023-11-06 22:57:52,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:54,348 INFO L124 PetriNetUnfolderBase]: 6207/8309 cut-off events. [2023-11-06 22:57:54,349 INFO L125 PetriNetUnfolderBase]: For 1499/1499 co-relation queries the response was YES. [2023-11-06 22:57:54,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23977 conditions, 8309 events. 6207/8309 cut-off events. For 1499/1499 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 37938 event pairs, 1825 based on Foata normal form. 0/4229 useless extension candidates. Maximal degree in co-relation 23813. Up to 4224 conditions per place. [2023-11-06 22:57:54,423 INFO L140 encePairwiseOnDemand]: 504/509 looper letters, 166 selfloop transitions, 15 changer transitions 0/181 dead transitions. [2023-11-06 22:57:54,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 181 transitions, 1184 flow [2023-11-06 22:57:54,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:57:54,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:57:54,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1706 transitions. [2023-11-06 22:57:54,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4788099915801291 [2023-11-06 22:57:54,431 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1706 transitions. [2023-11-06 22:57:54,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1706 transitions. [2023-11-06 22:57:54,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:54,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1706 transitions. [2023-11-06 22:57:54,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 243.71428571428572) internal successors, (1706), 7 states have internal predecessors, (1706), 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) [2023-11-06 22:57:54,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 509.0) internal successors, (4072), 8 states have internal predecessors, (4072), 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) [2023-11-06 22:57:54,446 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 509.0) internal successors, (4072), 8 states have internal predecessors, (4072), 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) [2023-11-06 22:57:54,447 INFO L175 Difference]: Start difference. First operand has 74 places, 82 transitions, 563 flow. Second operand 7 states and 1706 transitions. [2023-11-06 22:57:54,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 181 transitions, 1184 flow [2023-11-06 22:57:54,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 181 transitions, 1052 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-11-06 22:57:54,457 INFO L231 Difference]: Finished difference. Result has 78 places, 91 transitions, 538 flow [2023-11-06 22:57:54,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=538, PETRI_PLACES=78, PETRI_TRANSITIONS=91} [2023-11-06 22:57:54,459 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 28 predicate places. [2023-11-06 22:57:54,460 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 91 transitions, 538 flow [2023-11-06 22:57:54,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.85714285714286) internal successors, (1581), 7 states have internal predecessors, (1581), 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) [2023-11-06 22:57:54,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:54,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:54,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:54,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 22:57:54,667 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:57:54,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:54,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1353908685, now seen corresponding path program 1 times [2023-11-06 22:57:54,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:54,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982477438] [2023-11-06 22:57:54,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:54,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:54,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:57:54,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:54,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982477438] [2023-11-06 22:57:54,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982477438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:54,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:54,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:54,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262714749] [2023-11-06 22:57:54,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:54,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:54,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:54,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:54,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:54,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 509 [2023-11-06 22:57:54,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 91 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 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) [2023-11-06 22:57:54,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:54,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 509 [2023-11-06 22:57:54,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:55,871 INFO L124 PetriNetUnfolderBase]: 5127/7029 cut-off events. [2023-11-06 22:57:55,872 INFO L125 PetriNetUnfolderBase]: For 2182/2182 co-relation queries the response was YES. [2023-11-06 22:57:55,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23662 conditions, 7029 events. 5127/7029 cut-off events. For 2182/2182 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 32712 event pairs, 977 based on Foata normal form. 0/4574 useless extension candidates. Maximal degree in co-relation 23526. Up to 4366 conditions per place. [2023-11-06 22:57:55,921 INFO L140 encePairwiseOnDemand]: 506/509 looper letters, 98 selfloop transitions, 7 changer transitions 0/105 dead transitions. [2023-11-06 22:57:55,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 105 transitions, 754 flow [2023-11-06 22:57:55,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:55,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 724 transitions. [2023-11-06 22:57:55,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47413228552717746 [2023-11-06 22:57:55,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 724 transitions. [2023-11-06 22:57:55,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 724 transitions. [2023-11-06 22:57:55,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:55,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 724 transitions. [2023-11-06 22:57:55,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 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) [2023-11-06 22:57:55,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 509.0) internal successors, (2036), 4 states have internal predecessors, (2036), 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) [2023-11-06 22:57:55,932 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 509.0) internal successors, (2036), 4 states have internal predecessors, (2036), 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) [2023-11-06 22:57:55,933 INFO L175 Difference]: Start difference. First operand has 78 places, 91 transitions, 538 flow. Second operand 3 states and 724 transitions. [2023-11-06 22:57:55,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 105 transitions, 754 flow [2023-11-06 22:57:55,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 105 transitions, 731 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 22:57:55,995 INFO L231 Difference]: Finished difference. Result has 77 places, 87 transitions, 494 flow [2023-11-06 22:57:55,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=494, PETRI_PLACES=77, PETRI_TRANSITIONS=87} [2023-11-06 22:57:55,996 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-11-06 22:57:55,996 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 87 transitions, 494 flow [2023-11-06 22:57:55,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 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) [2023-11-06 22:57:55,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:55,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:55,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:57:55,997 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:57:55,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:55,998 INFO L85 PathProgramCache]: Analyzing trace with hash 229976283, now seen corresponding path program 1 times [2023-11-06 22:57:55,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:55,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264262247] [2023-11-06 22:57:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:55,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:56,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:56,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264262247] [2023-11-06 22:57:56,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264262247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:56,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:56,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:57:56,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859840526] [2023-11-06 22:57:56,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:56,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:56,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:56,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:56,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:56,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 509 [2023-11-06 22:57:56,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 87 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 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) [2023-11-06 22:57:56,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:56,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 509 [2023-11-06 22:57:56,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:57,154 INFO L124 PetriNetUnfolderBase]: 5123/6930 cut-off events. [2023-11-06 22:57:57,154 INFO L125 PetriNetUnfolderBase]: For 18121/18775 co-relation queries the response was YES. [2023-11-06 22:57:57,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23081 conditions, 6930 events. 5123/6930 cut-off events. For 18121/18775 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 31046 event pairs, 885 based on Foata normal form. 786/5677 useless extension candidates. Maximal degree in co-relation 22944. Up to 5553 conditions per place. [2023-11-06 22:57:57,219 INFO L140 encePairwiseOnDemand]: 499/509 looper letters, 104 selfloop transitions, 5 changer transitions 2/112 dead transitions. [2023-11-06 22:57:57,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 112 transitions, 857 flow [2023-11-06 22:57:57,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:57,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2023-11-06 22:57:57,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721676489849378 [2023-11-06 22:57:57,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2023-11-06 22:57:57,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2023-11-06 22:57:57,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:57,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2023-11-06 22:57:57,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 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) [2023-11-06 22:57:57,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 509.0) internal successors, (2036), 4 states have internal predecessors, (2036), 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) [2023-11-06 22:57:57,233 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 509.0) internal successors, (2036), 4 states have internal predecessors, (2036), 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) [2023-11-06 22:57:57,234 INFO L175 Difference]: Start difference. First operand has 77 places, 87 transitions, 494 flow. Second operand 3 states and 721 transitions. [2023-11-06 22:57:57,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 112 transitions, 857 flow [2023-11-06 22:57:57,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 112 transitions, 831 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:57:57,283 INFO L231 Difference]: Finished difference. Result has 78 places, 89 transitions, 505 flow [2023-11-06 22:57:57,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=505, PETRI_PLACES=78, PETRI_TRANSITIONS=89} [2023-11-06 22:57:57,284 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 28 predicate places. [2023-11-06 22:57:57,284 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 89 transitions, 505 flow [2023-11-06 22:57:57,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 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) [2023-11-06 22:57:57,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:57,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:57,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:57:57,285 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:57:57,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:57,286 INFO L85 PathProgramCache]: Analyzing trace with hash 489620515, now seen corresponding path program 1 times [2023-11-06 22:57:57,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:57,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641001522] [2023-11-06 22:57:57,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:57,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:57:57,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:57,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641001522] [2023-11-06 22:57:57,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641001522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:57,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:57,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:57,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666870989] [2023-11-06 22:57:57,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:57,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:57,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:57,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:57,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:57,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 509 [2023-11-06 22:57:57,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 89 transitions, 505 flow. Second operand has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 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) [2023-11-06 22:57:57,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:57,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 509 [2023-11-06 22:57:57,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:58,152 INFO L124 PetriNetUnfolderBase]: 4425/6040 cut-off events. [2023-11-06 22:57:58,152 INFO L125 PetriNetUnfolderBase]: For 8041/8093 co-relation queries the response was YES. [2023-11-06 22:57:58,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21044 conditions, 6040 events. 4425/6040 cut-off events. For 8041/8093 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 25703 event pairs, 1189 based on Foata normal form. 64/4373 useless extension candidates. Maximal degree in co-relation 20906. Up to 5885 conditions per place. [2023-11-06 22:57:58,191 INFO L140 encePairwiseOnDemand]: 505/509 looper letters, 90 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2023-11-06 22:57:58,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 96 transitions, 712 flow [2023-11-06 22:57:58,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:58,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 711 transitions. [2023-11-06 22:57:58,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656188605108055 [2023-11-06 22:57:58,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 711 transitions. [2023-11-06 22:57:58,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 711 transitions. [2023-11-06 22:57:58,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:58,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 711 transitions. [2023-11-06 22:57:58,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 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) [2023-11-06 22:57:58,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 509.0) internal successors, (2036), 4 states have internal predecessors, (2036), 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) [2023-11-06 22:57:58,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 509.0) internal successors, (2036), 4 states have internal predecessors, (2036), 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) [2023-11-06 22:57:58,203 INFO L175 Difference]: Start difference. First operand has 78 places, 89 transitions, 505 flow. Second operand 3 states and 711 transitions. [2023-11-06 22:57:58,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 96 transitions, 712 flow [2023-11-06 22:57:58,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 96 transitions, 703 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:57:58,236 INFO L231 Difference]: Finished difference. Result has 80 places, 89 transitions, 513 flow [2023-11-06 22:57:58,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=513, PETRI_PLACES=80, PETRI_TRANSITIONS=89} [2023-11-06 22:57:58,237 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 30 predicate places. [2023-11-06 22:57:58,237 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 89 transitions, 513 flow [2023-11-06 22:57:58,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 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) [2023-11-06 22:57:58,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:58,238 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:58,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:57:58,238 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:57:58,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:58,239 INFO L85 PathProgramCache]: Analyzing trace with hash -254629056, now seen corresponding path program 2 times [2023-11-06 22:57:58,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:58,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815992903] [2023-11-06 22:57:58,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:58,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:58,349 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:57:58,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:58,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815992903] [2023-11-06 22:57:58,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815992903] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:58,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395367142] [2023-11-06 22:57:58,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:57:58,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:58,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:58,351 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:58,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:57:58,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:57:58,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:57:58,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:57:58,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 22:57:58,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:57:58,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395367142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:58,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:58,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-11-06 22:57:58,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62856616] [2023-11-06 22:57:58,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:58,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:58,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:58,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:58,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:57:58,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 509 [2023-11-06 22:57:58,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 89 transitions, 513 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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) [2023-11-06 22:57:58,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:58,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 509 [2023-11-06 22:57:58,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:59,307 INFO L124 PetriNetUnfolderBase]: 3881/5276 cut-off events. [2023-11-06 22:57:59,307 INFO L125 PetriNetUnfolderBase]: For 9060/9112 co-relation queries the response was YES. [2023-11-06 22:57:59,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18052 conditions, 5276 events. 3881/5276 cut-off events. For 9060/9112 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 21825 event pairs, 1937 based on Foata normal form. 272/4033 useless extension candidates. Maximal degree in co-relation 17913. Up to 5273 conditions per place. [2023-11-06 22:57:59,333 INFO L140 encePairwiseOnDemand]: 507/509 looper letters, 86 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2023-11-06 22:57:59,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 88 transitions, 675 flow [2023-11-06 22:57:59,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:59,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 707 transitions. [2023-11-06 22:57:59,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4629993451211526 [2023-11-06 22:57:59,337 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 707 transitions. [2023-11-06 22:57:59,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 707 transitions. [2023-11-06 22:57:59,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:59,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 707 transitions. [2023-11-06 22:57:59,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 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) [2023-11-06 22:57:59,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 509.0) internal successors, (2036), 4 states have internal predecessors, (2036), 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) [2023-11-06 22:57:59,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 509.0) internal successors, (2036), 4 states have internal predecessors, (2036), 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) [2023-11-06 22:57:59,344 INFO L175 Difference]: Start difference. First operand has 80 places, 89 transitions, 513 flow. Second operand 3 states and 707 transitions. [2023-11-06 22:57:59,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 88 transitions, 675 flow [2023-11-06 22:57:59,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 88 transitions, 646 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-06 22:57:59,357 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 474 flow [2023-11-06 22:57:59,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=474, PETRI_PLACES=75, PETRI_TRANSITIONS=88} [2023-11-06 22:57:59,358 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 25 predicate places. [2023-11-06 22:57:59,358 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 474 flow [2023-11-06 22:57:59,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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) [2023-11-06 22:57:59,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:59,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:59,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:59,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:57:59,565 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:57:59,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:59,565 INFO L85 PathProgramCache]: Analyzing trace with hash 665976947, now seen corresponding path program 1 times [2023-11-06 22:57:59,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:59,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13721120] [2023-11-06 22:57:59,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:59,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:57:59,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:59,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13721120] [2023-11-06 22:57:59,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13721120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:59,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:59,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:57:59,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137379435] [2023-11-06 22:57:59,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:59,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:59,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:59,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:59,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:57:59,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 509 [2023-11-06 22:57:59,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 474 flow. Second operand has 4 states, 4 states have (on average 215.75) internal successors, (863), 4 states have internal predecessors, (863), 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) [2023-11-06 22:57:59,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:59,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 509 [2023-11-06 22:57:59,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:00,588 INFO L124 PetriNetUnfolderBase]: 4417/6068 cut-off events. [2023-11-06 22:58:00,588 INFO L125 PetriNetUnfolderBase]: For 4630/4682 co-relation queries the response was YES. [2023-11-06 22:58:00,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18666 conditions, 6068 events. 4417/6068 cut-off events. For 4630/4682 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 25984 event pairs, 2275 based on Foata normal form. 188/4701 useless extension candidates. Maximal degree in co-relation 18640. Up to 5261 conditions per place. [2023-11-06 22:58:00,685 INFO L140 encePairwiseOnDemand]: 501/509 looper letters, 73 selfloop transitions, 13 changer transitions 24/111 dead transitions. [2023-11-06 22:58:00,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 111 transitions, 795 flow [2023-11-06 22:58:00,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:58:00,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:58:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 903 transitions. [2023-11-06 22:58:00,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44351669941060906 [2023-11-06 22:58:00,690 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 903 transitions. [2023-11-06 22:58:00,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 903 transitions. [2023-11-06 22:58:00,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:00,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 903 transitions. [2023-11-06 22:58:00,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 225.75) internal successors, (903), 4 states have internal predecessors, (903), 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) [2023-11-06 22:58:00,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 509.0) internal successors, (2545), 5 states have internal predecessors, (2545), 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) [2023-11-06 22:58:00,700 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 509.0) internal successors, (2545), 5 states have internal predecessors, (2545), 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) [2023-11-06 22:58:00,701 INFO L175 Difference]: Start difference. First operand has 75 places, 88 transitions, 474 flow. Second operand 4 states and 903 transitions. [2023-11-06 22:58:00,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 111 transitions, 795 flow [2023-11-06 22:58:00,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 111 transitions, 794 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:58:00,716 INFO L231 Difference]: Finished difference. Result has 78 places, 87 transitions, 502 flow [2023-11-06 22:58:00,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=502, PETRI_PLACES=78, PETRI_TRANSITIONS=87} [2023-11-06 22:58:00,718 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 28 predicate places. [2023-11-06 22:58:00,718 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 87 transitions, 502 flow [2023-11-06 22:58:00,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 215.75) internal successors, (863), 4 states have internal predecessors, (863), 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) [2023-11-06 22:58:00,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:00,719 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-11-06 22:58:00,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:58:00,719 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:58:00,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:00,720 INFO L85 PathProgramCache]: Analyzing trace with hash -630345337, now seen corresponding path program 2 times [2023-11-06 22:58:00,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:00,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668985720] [2023-11-06 22:58:00,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:00,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:00,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:00,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668985720] [2023-11-06 22:58:00,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668985720] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:00,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258714185] [2023-11-06 22:58:00,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:58:00,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:00,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:00,996 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:01,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:58:01,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:58:01,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:58:01,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:58:01,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:58:01,160 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:58:01,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258714185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:01,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:01,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-11-06 22:58:01,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426220670] [2023-11-06 22:58:01,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:01,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:01,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:01,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:01,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:58:01,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 509 [2023-11-06 22:58:01,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 87 transitions, 502 flow. Second operand has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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) [2023-11-06 22:58:01,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:01,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 509 [2023-11-06 22:58:01,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:01,721 INFO L124 PetriNetUnfolderBase]: 2885/3921 cut-off events. [2023-11-06 22:58:01,721 INFO L125 PetriNetUnfolderBase]: For 3125/3151 co-relation queries the response was YES. [2023-11-06 22:58:01,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12509 conditions, 3921 events. 2885/3921 cut-off events. For 3125/3151 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 15237 event pairs, 1363 based on Foata normal form. 237/2996 useless extension candidates. Maximal degree in co-relation 12482. Up to 3862 conditions per place. [2023-11-06 22:58:01,746 INFO L140 encePairwiseOnDemand]: 504/509 looper letters, 69 selfloop transitions, 11 changer transitions 3/84 dead transitions. [2023-11-06 22:58:01,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 84 transitions, 638 flow [2023-11-06 22:58:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:58:01,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:58:01,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 907 transitions. [2023-11-06 22:58:01,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4454813359528487 [2023-11-06 22:58:01,750 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 907 transitions. [2023-11-06 22:58:01,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 907 transitions. [2023-11-06 22:58:01,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:01,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 907 transitions. [2023-11-06 22:58:01,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 226.75) internal successors, (907), 4 states have internal predecessors, (907), 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) [2023-11-06 22:58:01,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 509.0) internal successors, (2545), 5 states have internal predecessors, (2545), 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) [2023-11-06 22:58:01,759 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 509.0) internal successors, (2545), 5 states have internal predecessors, (2545), 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) [2023-11-06 22:58:01,759 INFO L175 Difference]: Start difference. First operand has 78 places, 87 transitions, 502 flow. Second operand 4 states and 907 transitions. [2023-11-06 22:58:01,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 84 transitions, 638 flow [2023-11-06 22:58:01,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 84 transitions, 524 flow, removed 8 selfloop flow, removed 13 redundant places. [2023-11-06 22:58:01,769 INFO L231 Difference]: Finished difference. Result has 64 places, 81 transitions, 361 flow [2023-11-06 22:58:01,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=361, PETRI_PLACES=64, PETRI_TRANSITIONS=81} [2023-11-06 22:58:01,770 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 14 predicate places. [2023-11-06 22:58:01,770 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 81 transitions, 361 flow [2023-11-06 22:58:01,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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) [2023-11-06 22:58:01,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:01,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:01,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:01,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:58:01,980 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:58:01,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:01,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1406938076, now seen corresponding path program 1 times [2023-11-06 22:58:01,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:01,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984351960] [2023-11-06 22:58:01,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:01,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:02,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:58:02,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:02,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984351960] [2023-11-06 22:58:02,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984351960] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:02,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344775120] [2023-11-06 22:58:02,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:02,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:02,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:02,646 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:02,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:58:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:02,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:58:02,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:02,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:02,859 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-06 22:58:02,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:02,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:02,881 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:58:02,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:02,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:02,896 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:58:02,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:02,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:02,919 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 22:58:02,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:02,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:02,945 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:58:02,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:02,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:02,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:02,967 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:58:02,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:02,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:02,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:02,986 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:58:02,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:02,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:03,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:03,006 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 22:58:03,069 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:58:03,137 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:58:03,137 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-06 22:58:03,189 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:58:03,232 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:58:03,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:03,389 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-06 22:58:03,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:03,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:04,334 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:58:04,334 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 51 [2023-11-06 22:58:04,353 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:58:04,354 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 216 treesize of output 208 [2023-11-06 22:58:04,387 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 112 [2023-11-06 22:58:04,418 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:58:04,419 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 119 [2023-11-06 22:58:04,443 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:58:04,444 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 148 [2023-11-06 22:58:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:05,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344775120] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:58:05,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:58:05,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 25 [2023-11-06 22:58:05,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48685263] [2023-11-06 22:58:05,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:58:05,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 22:58:05,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:05,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 22:58:05,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=600, Unknown=5, NotChecked=0, Total=702 [2023-11-06 22:58:06,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 509 [2023-11-06 22:58:06,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 81 transitions, 361 flow. Second operand has 27 states, 27 states have (on average 158.33333333333334) internal successors, (4275), 27 states have internal predecessors, (4275), 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) [2023-11-06 22:58:06,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:06,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 509 [2023-11-06 22:58:06,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:11,238 INFO L124 PetriNetUnfolderBase]: 7211/9726 cut-off events. [2023-11-06 22:58:11,238 INFO L125 PetriNetUnfolderBase]: For 6645/6671 co-relation queries the response was YES. [2023-11-06 22:58:11,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29713 conditions, 9726 events. 7211/9726 cut-off events. For 6645/6671 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 45378 event pairs, 749 based on Foata normal form. 420/7036 useless extension candidates. Maximal degree in co-relation 29697. Up to 3943 conditions per place. [2023-11-06 22:58:11,292 INFO L140 encePairwiseOnDemand]: 496/509 looper letters, 298 selfloop transitions, 123 changer transitions 0/422 dead transitions. [2023-11-06 22:58:11,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 422 transitions, 2542 flow [2023-11-06 22:58:11,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:58:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:58:11,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4058 transitions. [2023-11-06 22:58:11,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3321872953503602 [2023-11-06 22:58:11,307 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4058 transitions. [2023-11-06 22:58:11,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4058 transitions. [2023-11-06 22:58:11,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:11,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4058 transitions. [2023-11-06 22:58:11,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 169.08333333333334) internal successors, (4058), 24 states have internal predecessors, (4058), 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) [2023-11-06 22:58:11,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 509.0) internal successors, (12725), 25 states have internal predecessors, (12725), 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) [2023-11-06 22:58:11,345 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 509.0) internal successors, (12725), 25 states have internal predecessors, (12725), 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) [2023-11-06 22:58:11,345 INFO L175 Difference]: Start difference. First operand has 64 places, 81 transitions, 361 flow. Second operand 24 states and 4058 transitions. [2023-11-06 22:58:11,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 422 transitions, 2542 flow [2023-11-06 22:58:11,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 422 transitions, 2504 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-06 22:58:11,473 INFO L231 Difference]: Finished difference. Result has 97 places, 220 transitions, 1629 flow [2023-11-06 22:58:11,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1629, PETRI_PLACES=97, PETRI_TRANSITIONS=220} [2023-11-06 22:58:11,474 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 47 predicate places. [2023-11-06 22:58:11,475 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 220 transitions, 1629 flow [2023-11-06 22:58:11,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 158.33333333333334) internal successors, (4275), 27 states have internal predecessors, (4275), 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) [2023-11-06 22:58:11,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:11,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:11,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:11,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:58:11,684 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:58:11,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:11,684 INFO L85 PathProgramCache]: Analyzing trace with hash 499653117, now seen corresponding path program 1 times [2023-11-06 22:58:11,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:11,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745417514] [2023-11-06 22:58:11,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:11,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:12,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:12,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745417514] [2023-11-06 22:58:12,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745417514] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:12,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086049218] [2023-11-06 22:58:12,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:12,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:12,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:12,740 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:12,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:58:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:12,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:58:12,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:12,963 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:58:13,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:13,040 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-06 22:58:13,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:13,125 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-06 22:58:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:58:13,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:13,604 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:58:13,605 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-11-06 22:58:13,616 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:58:13,617 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 159 [2023-11-06 22:58:13,627 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 25 [2023-11-06 22:58:13,635 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2023-11-06 22:58:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:58:13,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086049218] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:58:13,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:58:13,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 21 [2023-11-06 22:58:13,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254600226] [2023-11-06 22:58:13,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:58:13,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:58:13,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:13,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:58:13,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=440, Unknown=3, NotChecked=0, Total=506 [2023-11-06 22:58:16,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 509 [2023-11-06 22:58:16,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 220 transitions, 1629 flow. Second operand has 23 states, 23 states have (on average 152.56521739130434) internal successors, (3509), 23 states have internal predecessors, (3509), 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) [2023-11-06 22:58:16,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:16,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 509 [2023-11-06 22:58:16,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:19,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:58:23,936 INFO L124 PetriNetUnfolderBase]: 8303/11323 cut-off events. [2023-11-06 22:58:23,936 INFO L125 PetriNetUnfolderBase]: For 106812/106888 co-relation queries the response was YES. [2023-11-06 22:58:23,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60980 conditions, 11323 events. 8303/11323 cut-off events. For 106812/106888 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 54629 event pairs, 2183 based on Foata normal form. 76/9484 useless extension candidates. Maximal degree in co-relation 60949. Up to 9884 conditions per place. [2023-11-06 22:58:24,037 INFO L140 encePairwiseOnDemand]: 493/509 looper letters, 517 selfloop transitions, 172 changer transitions 1/691 dead transitions. [2023-11-06 22:58:24,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 691 transitions, 7790 flow [2023-11-06 22:58:24,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-06 22:58:24,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-11-06 22:58:24,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 6243 transitions. [2023-11-06 22:58:24,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30663064833005893 [2023-11-06 22:58:24,056 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 6243 transitions. [2023-11-06 22:58:24,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 6243 transitions. [2023-11-06 22:58:24,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:24,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 6243 transitions. [2023-11-06 22:58:24,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 156.075) internal successors, (6243), 40 states have internal predecessors, (6243), 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) [2023-11-06 22:58:24,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 509.0) internal successors, (20869), 41 states have internal predecessors, (20869), 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) [2023-11-06 22:58:24,098 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 509.0) internal successors, (20869), 41 states have internal predecessors, (20869), 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) [2023-11-06 22:58:24,098 INFO L175 Difference]: Start difference. First operand has 97 places, 220 transitions, 1629 flow. Second operand 40 states and 6243 transitions. [2023-11-06 22:58:24,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 691 transitions, 7790 flow [2023-11-06 22:58:24,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 691 transitions, 7544 flow, removed 113 selfloop flow, removed 3 redundant places. [2023-11-06 22:58:24,440 INFO L231 Difference]: Finished difference. Result has 146 places, 358 transitions, 2928 flow [2023-11-06 22:58:24,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2928, PETRI_PLACES=146, PETRI_TRANSITIONS=358} [2023-11-06 22:58:24,441 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 96 predicate places. [2023-11-06 22:58:24,441 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 358 transitions, 2928 flow [2023-11-06 22:58:24,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 152.56521739130434) internal successors, (3509), 23 states have internal predecessors, (3509), 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) [2023-11-06 22:58:24,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:24,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:24,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:24,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:58:24,642 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:58:24,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:24,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1184491207, now seen corresponding path program 1 times [2023-11-06 22:58:24,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:24,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670103623] [2023-11-06 22:58:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:24,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:58:25,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:25,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670103623] [2023-11-06 22:58:25,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670103623] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:25,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682966329] [2023-11-06 22:58:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:25,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:25,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:25,476 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:25,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:58:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:25,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:58:25,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:25,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:58:25,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:26,009 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-06 22:58:26,009 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2023-11-06 22:58:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:58:26,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682966329] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:58:26,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:58:26,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 20 [2023-11-06 22:58:26,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890120566] [2023-11-06 22:58:26,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:58:26,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 22:58:26,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:26,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 22:58:26,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:58:28,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 509 [2023-11-06 22:58:28,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 358 transitions, 2928 flow. Second operand has 22 states, 22 states have (on average 175.77272727272728) internal successors, (3867), 22 states have internal predecessors, (3867), 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) [2023-11-06 22:58:28,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:28,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 509 [2023-11-06 22:58:28,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:37,640 INFO L124 PetriNetUnfolderBase]: 16620/23891 cut-off events. [2023-11-06 22:58:37,640 INFO L125 PetriNetUnfolderBase]: For 209630/209746 co-relation queries the response was YES. [2023-11-06 22:58:37,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125086 conditions, 23891 events. 16620/23891 cut-off events. For 209630/209746 co-relation queries the response was YES. Maximal size of possible extension queue 1199. Compared 147848 event pairs, 1764 based on Foata normal form. 358/21211 useless extension candidates. Maximal degree in co-relation 125041. Up to 8906 conditions per place. [2023-11-06 22:58:38,010 INFO L140 encePairwiseOnDemand]: 494/509 looper letters, 891 selfloop transitions, 489 changer transitions 0/1381 dead transitions. [2023-11-06 22:58:38,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 1381 transitions, 13933 flow [2023-11-06 22:58:38,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-06 22:58:38,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-11-06 22:58:38,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 9030 transitions. [2023-11-06 22:58:38,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36205444849845636 [2023-11-06 22:58:38,025 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 9030 transitions. [2023-11-06 22:58:38,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 9030 transitions. [2023-11-06 22:58:38,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:38,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 9030 transitions. [2023-11-06 22:58:38,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 184.28571428571428) internal successors, (9030), 49 states have internal predecessors, (9030), 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) [2023-11-06 22:58:38,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 509.0) internal successors, (25450), 50 states have internal predecessors, (25450), 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) [2023-11-06 22:58:38,070 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 509.0) internal successors, (25450), 50 states have internal predecessors, (25450), 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) [2023-11-06 22:58:38,071 INFO L175 Difference]: Start difference. First operand has 146 places, 358 transitions, 2928 flow. Second operand 49 states and 9030 transitions. [2023-11-06 22:58:38,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 1381 transitions, 13933 flow [2023-11-06 22:58:39,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 1381 transitions, 13841 flow, removed 27 selfloop flow, removed 6 redundant places. [2023-11-06 22:58:39,428 INFO L231 Difference]: Finished difference. Result has 217 places, 773 transitions, 8679 flow [2023-11-06 22:58:39,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=2850, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=8679, PETRI_PLACES=217, PETRI_TRANSITIONS=773} [2023-11-06 22:58:39,429 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 167 predicate places. [2023-11-06 22:58:39,429 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 773 transitions, 8679 flow [2023-11-06 22:58:39,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 175.77272727272728) internal successors, (3867), 22 states have internal predecessors, (3867), 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) [2023-11-06 22:58:39,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:39,430 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:39,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:39,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:58:39,630 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:58:39,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:39,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1727620110, now seen corresponding path program 2 times [2023-11-06 22:58:39,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:39,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146686536] [2023-11-06 22:58:39,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:39,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:58:40,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:40,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146686536] [2023-11-06 22:58:40,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146686536] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:40,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887841392] [2023-11-06 22:58:40,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:58:40,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:40,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:40,372 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:40,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:58:40,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:58:40,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:58:40,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:58:40,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:58:40,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:58:40,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887841392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:40,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:40,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 11 [2023-11-06 22:58:40,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167981836] [2023-11-06 22:58:40,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:40,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:58:40,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:40,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:58:40,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:40,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 509 [2023-11-06 22:58:40,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 773 transitions, 8679 flow. Second operand has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 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) [2023-11-06 22:58:40,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:40,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 509 [2023-11-06 22:58:40,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:49,230 INFO L124 PetriNetUnfolderBase]: 19095/27732 cut-off events. [2023-11-06 22:58:49,230 INFO L125 PetriNetUnfolderBase]: For 337509/337625 co-relation queries the response was YES. [2023-11-06 22:58:49,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161634 conditions, 27732 events. 19095/27732 cut-off events. For 337509/337625 co-relation queries the response was YES. Maximal size of possible extension queue 1368. Compared 177409 event pairs, 5676 based on Foata normal form. 565/25247 useless extension candidates. Maximal degree in co-relation 161560. Up to 20143 conditions per place. [2023-11-06 22:58:49,805 INFO L140 encePairwiseOnDemand]: 501/509 looper letters, 810 selfloop transitions, 145 changer transitions 0/956 dead transitions. [2023-11-06 22:58:49,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 956 transitions, 12651 flow [2023-11-06 22:58:49,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:58:49,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:58:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1117 transitions. [2023-11-06 22:58:49,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388998035363458 [2023-11-06 22:58:49,809 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1117 transitions. [2023-11-06 22:58:49,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1117 transitions. [2023-11-06 22:58:49,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:49,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1117 transitions. [2023-11-06 22:58:49,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 223.4) internal successors, (1117), 5 states have internal predecessors, (1117), 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) [2023-11-06 22:58:49,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 509.0) internal successors, (3054), 6 states have internal predecessors, (3054), 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) [2023-11-06 22:58:49,814 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 509.0) internal successors, (3054), 6 states have internal predecessors, (3054), 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) [2023-11-06 22:58:49,814 INFO L175 Difference]: Start difference. First operand has 217 places, 773 transitions, 8679 flow. Second operand 5 states and 1117 transitions. [2023-11-06 22:58:49,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 956 transitions, 12651 flow [2023-11-06 22:58:54,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 956 transitions, 12348 flow, removed 127 selfloop flow, removed 8 redundant places. [2023-11-06 22:58:54,217 INFO L231 Difference]: Finished difference. Result has 215 places, 818 transitions, 9544 flow [2023-11-06 22:58:54,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=8299, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9544, PETRI_PLACES=215, PETRI_TRANSITIONS=818} [2023-11-06 22:58:54,218 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 165 predicate places. [2023-11-06 22:58:54,218 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 818 transitions, 9544 flow [2023-11-06 22:58:54,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 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) [2023-11-06 22:58:54,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:54,219 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:54,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:54,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:54,419 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:58:54,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:54,420 INFO L85 PathProgramCache]: Analyzing trace with hash -51613125, now seen corresponding path program 1 times [2023-11-06 22:58:54,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:54,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778648416] [2023-11-06 22:58:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:54,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:55,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:58:55,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:55,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778648416] [2023-11-06 22:58:55,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778648416] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:55,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812658256] [2023-11-06 22:58:55,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:55,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:55,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:55,117 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:55,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:58:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:55,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:58:55,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:55,340 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:58:55,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:55,412 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-06 22:58:55,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:55,510 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-06 22:58:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:58:55,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:55,813 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_568 (Array Int Int)) (~q2_back~0 Int)) (or (< c_~n2~0 (+ ~q2_back~0 1)) (< ~q2_back~0 0) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_568) c_~q2~0.base) (+ c_~q2~0.offset (* ~q2_back~0 4))) 2147483648))) is different from false [2023-11-06 22:58:55,923 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:58:55,924 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-06 22:58:55,936 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:58:55,937 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 71 [2023-11-06 22:58:55,945 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2023-11-06 22:58:55,960 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2023-11-06 22:58:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:58:56,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812658256] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:58:56,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:58:56,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 18 [2023-11-06 22:58:56,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813877470] [2023-11-06 22:58:56,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:58:56,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:58:56,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:56,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:58:56,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=292, Unknown=1, NotChecked=34, Total=380 [2023-11-06 22:58:56,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 509 [2023-11-06 22:58:56,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 818 transitions, 9544 flow. Second operand has 20 states, 20 states have (on average 163.7) internal successors, (3274), 20 states have internal predecessors, (3274), 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) [2023-11-06 22:58:56,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:56,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 509 [2023-11-06 22:58:56,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:59:05,851 INFO L124 PetriNetUnfolderBase]: 18968/27522 cut-off events. [2023-11-06 22:59:05,851 INFO L125 PetriNetUnfolderBase]: For 317123/317239 co-relation queries the response was YES. [2023-11-06 22:59:06,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161489 conditions, 27522 events. 18968/27522 cut-off events. For 317123/317239 co-relation queries the response was YES. Maximal size of possible extension queue 1356. Compared 175061 event pairs, 7344 based on Foata normal form. 144/24659 useless extension candidates. Maximal degree in co-relation 161414. Up to 26334 conditions per place. [2023-11-06 22:59:06,322 INFO L140 encePairwiseOnDemand]: 496/509 looper letters, 815 selfloop transitions, 232 changer transitions 0/1048 dead transitions. [2023-11-06 22:59:06,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 1048 transitions, 14344 flow [2023-11-06 22:59:06,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:59:06,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:59:06,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2021 transitions. [2023-11-06 22:59:06,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33087753765553374 [2023-11-06 22:59:06,327 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2021 transitions. [2023-11-06 22:59:06,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2021 transitions. [2023-11-06 22:59:06,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:59:06,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2021 transitions. [2023-11-06 22:59:06,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 168.41666666666666) internal successors, (2021), 12 states have internal predecessors, (2021), 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) [2023-11-06 22:59:06,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 509.0) internal successors, (6617), 13 states have internal predecessors, (6617), 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) [2023-11-06 22:59:06,339 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 509.0) internal successors, (6617), 13 states have internal predecessors, (6617), 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) [2023-11-06 22:59:06,339 INFO L175 Difference]: Start difference. First operand has 215 places, 818 transitions, 9544 flow. Second operand 12 states and 2021 transitions. [2023-11-06 22:59:06,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 1048 transitions, 14344 flow [2023-11-06 22:59:11,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 1048 transitions, 14193 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:59:11,527 INFO L231 Difference]: Finished difference. Result has 229 places, 829 transitions, 10238 flow [2023-11-06 22:59:11,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=9260, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10238, PETRI_PLACES=229, PETRI_TRANSITIONS=829} [2023-11-06 22:59:11,528 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 179 predicate places. [2023-11-06 22:59:11,529 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 829 transitions, 10238 flow [2023-11-06 22:59:11,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 163.7) internal successors, (3274), 20 states have internal predecessors, (3274), 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) [2023-11-06 22:59:11,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:59:11,529 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:59:11,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:59:11,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:59:11,730 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:59:11,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:59:11,730 INFO L85 PathProgramCache]: Analyzing trace with hash 256757957, now seen corresponding path program 1 times [2023-11-06 22:59:11,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:59:11,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186990601] [2023-11-06 22:59:11,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:59:11,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:59:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:59:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:59:12,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:59:12,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186990601] [2023-11-06 22:59:12,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186990601] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:59:12,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593534766] [2023-11-06 22:59:12,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:59:12,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:59:12,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:59:12,501 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:59:12,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:59:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:59:12,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:59:12,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:59:12,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:59:12,769 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-06 22:59:12,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:59:12,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:59:12,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593534766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:59:12,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:59:12,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2023-11-06 22:59:12,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525536271] [2023-11-06 22:59:12,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:59:12,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:59:12,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:59:12,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:59:12,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:59:13,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 509 [2023-11-06 22:59:13,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 829 transitions, 10238 flow. Second operand has 8 states, 8 states have (on average 201.625) internal successors, (1613), 8 states have internal predecessors, (1613), 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) [2023-11-06 22:59:13,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:59:13,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 509 [2023-11-06 22:59:13,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:59:22,301 INFO L124 PetriNetUnfolderBase]: 19484/28520 cut-off events. [2023-11-06 22:59:22,301 INFO L125 PetriNetUnfolderBase]: For 329120/329236 co-relation queries the response was YES. [2023-11-06 22:59:22,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165724 conditions, 28520 events. 19484/28520 cut-off events. For 329120/329236 co-relation queries the response was YES. Maximal size of possible extension queue 1406. Compared 186559 event pairs, 6135 based on Foata normal form. 171/25577 useless extension candidates. Maximal degree in co-relation 165644. Up to 26789 conditions per place. [2023-11-06 22:59:22,824 INFO L140 encePairwiseOnDemand]: 501/509 looper letters, 817 selfloop transitions, 80 changer transitions 0/898 dead transitions. [2023-11-06 22:59:22,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 898 transitions, 12573 flow [2023-11-06 22:59:22,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:59:22,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:59:22,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1471 transitions. [2023-11-06 22:59:22,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128543362335111 [2023-11-06 22:59:22,828 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1471 transitions. [2023-11-06 22:59:22,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1471 transitions. [2023-11-06 22:59:22,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:59:22,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1471 transitions. [2023-11-06 22:59:22,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 210.14285714285714) internal successors, (1471), 7 states have internal predecessors, (1471), 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) [2023-11-06 22:59:22,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 509.0) internal successors, (4072), 8 states have internal predecessors, (4072), 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) [2023-11-06 22:59:22,836 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 509.0) internal successors, (4072), 8 states have internal predecessors, (4072), 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) [2023-11-06 22:59:22,836 INFO L175 Difference]: Start difference. First operand has 229 places, 829 transitions, 10238 flow. Second operand 7 states and 1471 transitions. [2023-11-06 22:59:22,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 898 transitions, 12573 flow [2023-11-06 22:59:28,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 898 transitions, 12386 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-06 22:59:28,387 INFO L231 Difference]: Finished difference. Result has 232 places, 843 transitions, 10425 flow [2023-11-06 22:59:28,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=10017, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=751, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10425, PETRI_PLACES=232, PETRI_TRANSITIONS=843} [2023-11-06 22:59:28,388 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 182 predicate places. [2023-11-06 22:59:28,388 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 843 transitions, 10425 flow [2023-11-06 22:59:28,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 201.625) internal successors, (1613), 8 states have internal predecessors, (1613), 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) [2023-11-06 22:59:28,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:59:28,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:59:28,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:59:28,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-06 22:59:28,589 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:59:28,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:59:28,590 INFO L85 PathProgramCache]: Analyzing trace with hash -50883486, now seen corresponding path program 1 times [2023-11-06 22:59:28,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:59:28,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766388657] [2023-11-06 22:59:28,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:59:28,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:59:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:59:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:59:29,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:59:29,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766388657] [2023-11-06 22:59:29,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766388657] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:59:29,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200018070] [2023-11-06 22:59:29,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:59:29,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:59:29,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:59:29,122 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:59:29,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:59:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:59:29,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:59:29,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:59:29,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:59:29,401 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-06 22:59:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:59:29,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:59:29,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200018070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:59:29,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:59:29,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2023-11-06 22:59:29,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232360934] [2023-11-06 22:59:29,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:59:29,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:59:29,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:59:29,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:59:29,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:59:29,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 509 [2023-11-06 22:59:29,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 843 transitions, 10425 flow. Second operand has 8 states, 8 states have (on average 201.625) internal successors, (1613), 8 states have internal predecessors, (1613), 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) [2023-11-06 22:59:29,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:59:29,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 509 [2023-11-06 22:59:29,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:59:41,224 INFO L124 PetriNetUnfolderBase]: 23377/34305 cut-off events. [2023-11-06 22:59:41,224 INFO L125 PetriNetUnfolderBase]: For 435519/435635 co-relation queries the response was YES. [2023-11-06 22:59:41,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202378 conditions, 34305 events. 23377/34305 cut-off events. For 435519/435635 co-relation queries the response was YES. Maximal size of possible extension queue 1705. Compared 231688 event pairs, 6354 based on Foata normal form. 300/30987 useless extension candidates. Maximal degree in co-relation 202296. Up to 26731 conditions per place. [2023-11-06 22:59:41,856 INFO L140 encePairwiseOnDemand]: 500/509 looper letters, 862 selfloop transitions, 183 changer transitions 0/1046 dead transitions. [2023-11-06 22:59:41,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 1046 transitions, 14841 flow [2023-11-06 22:59:41,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:59:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:59:41,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1476 transitions. [2023-11-06 22:59:41,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142576480493966 [2023-11-06 22:59:41,859 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1476 transitions. [2023-11-06 22:59:41,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1476 transitions. [2023-11-06 22:59:41,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:59:41,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1476 transitions. [2023-11-06 22:59:41,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 210.85714285714286) internal successors, (1476), 7 states have internal predecessors, (1476), 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) [2023-11-06 22:59:41,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 509.0) internal successors, (4072), 8 states have internal predecessors, (4072), 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) [2023-11-06 22:59:41,867 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 509.0) internal successors, (4072), 8 states have internal predecessors, (4072), 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) [2023-11-06 22:59:41,867 INFO L175 Difference]: Start difference. First operand has 232 places, 843 transitions, 10425 flow. Second operand 7 states and 1476 transitions. [2023-11-06 22:59:41,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 1046 transitions, 14841 flow [2023-11-06 22:59:51,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 1046 transitions, 14756 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-11-06 22:59:51,868 INFO L231 Difference]: Finished difference. Result has 239 places, 910 transitions, 11882 flow [2023-11-06 22:59:51,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=509, PETRI_DIFFERENCE_MINUEND_FLOW=10340, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=843, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11882, PETRI_PLACES=239, PETRI_TRANSITIONS=910} [2023-11-06 22:59:51,869 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 189 predicate places. [2023-11-06 22:59:51,870 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 910 transitions, 11882 flow [2023-11-06 22:59:51,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 201.625) internal successors, (1613), 8 states have internal predecessors, (1613), 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) [2023-11-06 22:59:51,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:59:51,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:59:51,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:59:52,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-06 22:59:52,071 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-06 22:59:52,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:59:52,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1716279829, now seen corresponding path program 2 times [2023-11-06 22:59:52,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:59:52,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108364416] [2023-11-06 22:59:52,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:59:52,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:59:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:59:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:59:52,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:59:52,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108364416] [2023-11-06 22:59:52,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108364416] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:59:52,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568671913] [2023-11-06 22:59:52,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:59:52,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:59:52,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:59:52,473 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:59:52,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87560fb3-4b90-462b-96f2-62aa0367a283/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:59:52,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:59:52,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:59:52,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:59:52,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:59:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:59:52,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:59:52,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568671913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:59:52,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:59:52,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-06 22:59:52,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885093428] [2023-11-06 22:59:52,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:59:52,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:59:52,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:59:52,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:59:52,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:59:52,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 509 [2023-11-06 22:59:52,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 910 transitions, 11882 flow. Second operand has 6 states, 6 states have (on average 212.16666666666666) internal successors, (1273), 6 states have internal predecessors, (1273), 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) [2023-11-06 22:59:52,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:59:52,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 509 [2023-11-06 22:59:52,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand