./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.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_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/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_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/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_0a6b917f-d6b4-4508-b39b-02764a32072c/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 f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:08:38,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:08:39,046 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:08:39,051 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:08:39,052 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:08:39,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:08:39,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:08:39,080 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:08:39,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:08:39,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:08:39,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:08:39,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:08:39,083 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:08:39,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:08:39,085 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:08:39,085 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:08:39,086 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:08:39,087 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:08:39,087 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:08:39,088 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:08:39,089 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:08:39,096 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:08:39,096 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:08:39,097 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:08:39,097 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:08:39,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:08:39,098 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:08:39,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:08:39,099 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:08:39,100 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:08:39,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:08:39,101 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:08:39,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:08:39,102 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:08:39,102 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:08:39,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:08:39,103 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:08:39,107 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:08:39,107 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:08:39,108 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:08:39,108 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:08:39,109 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_0a6b917f-d6b4-4508-b39b-02764a32072c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2023-11-06 23:08:39,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:08:39,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:08:39,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:08:39,471 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:08:39,472 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:08:39,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2023-11-06 23:08:42,576 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:08:42,863 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:08:42,873 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2023-11-06 23:08:42,886 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/data/5daa419bf/6734fb42ad0241308a53711614389e4a/FLAG91f3fe37e [2023-11-06 23:08:42,911 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/data/5daa419bf/6734fb42ad0241308a53711614389e4a [2023-11-06 23:08:42,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:08:42,920 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:08:42,924 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:08:42,925 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:08:42,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:08:42,934 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:08:42" (1/1) ... [2023-11-06 23:08:42,936 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2018f3f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:42, skipping insertion in model container [2023-11-06 23:08:42,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:08:42" (1/1) ... [2023-11-06 23:08:43,000 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:08:43,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:08:43,385 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:08:43,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:08:43,447 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:43,449 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:43,458 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:08:43,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:43 WrapperNode [2023-11-06 23:08:43,459 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:08:43,460 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:08:43,460 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:08:43,461 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:08:43,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:43" (1/1) ... [2023-11-06 23:08:43,498 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:43" (1/1) ... [2023-11-06 23:08:43,549 INFO L138 Inliner]: procedures = 26, calls = 94, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 511 [2023-11-06 23:08:43,549 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:08:43,550 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:08:43,550 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:08:43,550 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:08:43,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:43" (1/1) ... [2023-11-06 23:08:43,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:43" (1/1) ... [2023-11-06 23:08:43,579 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:43" (1/1) ... [2023-11-06 23:08:43,580 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:43" (1/1) ... [2023-11-06 23:08:43,598 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:43" (1/1) ... [2023-11-06 23:08:43,607 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:43" (1/1) ... [2023-11-06 23:08:43,611 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:43" (1/1) ... [2023-11-06 23:08:43,615 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:43" (1/1) ... [2023-11-06 23:08:43,622 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:08:43,623 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:08:43,623 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:08:43,624 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:08:43,625 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:43" (1/1) ... [2023-11-06 23:08:43,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:08:43,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:43,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:08:43,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:08:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:08:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:08:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:08:43,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:08:43,741 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 23:08:43,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 23:08:43,741 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 23:08:43,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 23:08:43,741 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 23:08:43,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 23:08:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 23:08:43,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 23:08:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:08:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 23:08:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 23:08:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:08:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:08:43,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:08:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:08:43,749 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 23:08:43,963 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:08:43,967 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:08:45,085 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:08:45,726 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:08:45,726 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-06 23:08:45,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:08:45 BoogieIcfgContainer [2023-11-06 23:08:45,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:08:45,737 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:08:45,738 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:08:45,742 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:08:45,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:08:42" (1/3) ... [2023-11-06 23:08:45,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71db755f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:08:45, skipping insertion in model container [2023-11-06 23:08:45,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:43" (2/3) ... [2023-11-06 23:08:45,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71db755f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:08:45, skipping insertion in model container [2023-11-06 23:08:45,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:08:45" (3/3) ... [2023-11-06 23:08:45,749 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2023-11-06 23:08:45,761 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:08:45,775 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:08:45,776 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-06 23:08:45,776 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:08:46,044 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 23:08:46,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 376 places, 388 transitions, 804 flow [2023-11-06 23:08:46,417 INFO L124 PetriNetUnfolderBase]: 25/384 cut-off events. [2023-11-06 23:08:46,418 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 23:08:46,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 384 events. 25/384 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 340 event pairs, 0 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 337. Up to 2 conditions per place. [2023-11-06 23:08:46,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 376 places, 388 transitions, 804 flow [2023-11-06 23:08:46,448 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 347 places, 358 transitions, 737 flow [2023-11-06 23:08:46,452 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:08:46,472 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 347 places, 358 transitions, 737 flow [2023-11-06 23:08:46,478 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 347 places, 358 transitions, 737 flow [2023-11-06 23:08:46,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 358 transitions, 737 flow [2023-11-06 23:08:46,602 INFO L124 PetriNetUnfolderBase]: 24/358 cut-off events. [2023-11-06 23:08:46,602 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 23:08:46,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 358 events. 24/358 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 339 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 337. Up to 2 conditions per place. [2023-11-06 23:08:46,614 INFO L119 LiptonReduction]: Number of co-enabled transitions 5712 [2023-11-06 23:09:05,739 INFO L134 LiptonReduction]: Checked pairs total: 21098 [2023-11-06 23:09:05,739 INFO L136 LiptonReduction]: Total number of compositions: 370 [2023-11-06 23:09:05,787 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:09:05,804 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;@565397bc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:09:05,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-11-06 23:09:05,812 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:09:05,814 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 23:09:05,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:09:05,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:05,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 23:09:05,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:09:05,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:05,832 INFO L85 PathProgramCache]: Analyzing trace with hash 63486, now seen corresponding path program 1 times [2023-11-06 23:09:05,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:05,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622230008] [2023-11-06 23:09:05,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:05,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:06,312 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 23:09:06,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:06,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622230008] [2023-11-06 23:09:06,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622230008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:06,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:06,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:09:06,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552896019] [2023-11-06 23:09:06,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:06,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:06,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:06,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:06,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:06,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 758 [2023-11-06 23:09:06,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 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 23:09:06,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:06,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 758 [2023-11-06 23:09:06,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:10,365 INFO L124 PetriNetUnfolderBase]: 14480/18863 cut-off events. [2023-11-06 23:09:10,365 INFO L125 PetriNetUnfolderBase]: For 551/551 co-relation queries the response was YES. [2023-11-06 23:09:10,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38695 conditions, 18863 events. 14480/18863 cut-off events. For 551/551 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 85693 event pairs, 11752 based on Foata normal form. 0/9439 useless extension candidates. Maximal degree in co-relation 36140. Up to 18857 conditions per place. [2023-11-06 23:09:10,529 INFO L140 encePairwiseOnDemand]: 729/758 looper letters, 58 selfloop transitions, 9 changer transitions 0/67 dead transitions. [2023-11-06 23:09:10,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 67 transitions, 289 flow [2023-11-06 23:09:10,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:10,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:09:10,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1005 transitions. [2023-11-06 23:09:10,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419525065963061 [2023-11-06 23:09:10,554 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1005 transitions. [2023-11-06 23:09:10,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1005 transitions. [2023-11-06 23:09:10,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:10,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1005 transitions. [2023-11-06 23:09:10,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 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 23:09:10,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:09:10,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:09:10,585 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 163 flow. Second operand 3 states and 1005 transitions. [2023-11-06 23:09:10,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 67 transitions, 289 flow [2023-11-06 23:09:10,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-06 23:09:10,806 INFO L231 Difference]: Finished difference. Result has 61 places, 67 transitions, 210 flow [2023-11-06 23:09:10,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=61, PETRI_TRANSITIONS=67} [2023-11-06 23:09:10,813 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -15 predicate places. [2023-11-06 23:09:10,813 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 67 transitions, 210 flow [2023-11-06 23:09:10,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 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 23:09:10,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:10,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:09:10,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:09:10,815 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:09:10,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:10,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1970482, now seen corresponding path program 1 times [2023-11-06 23:09:10,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:10,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518929358] [2023-11-06 23:09:10,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:10,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:11,032 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 23:09:11,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:11,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518929358] [2023-11-06 23:09:11,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518929358] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:11,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396422903] [2023-11-06 23:09:11,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:11,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:11,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:11,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:11,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:09:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:11,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:09:11,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:11,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:11,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396422903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:11,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:09:11,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-06 23:09:11,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591674320] [2023-11-06 23:09:11,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:11,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:11,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:11,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:11,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:11,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 758 [2023-11-06 23:09:11,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 67 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 306.75) internal successors, (1227), 4 states have internal predecessors, (1227), 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 23:09:11,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:11,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 758 [2023-11-06 23:09:11,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:14,919 INFO L124 PetriNetUnfolderBase]: 14480/18859 cut-off events. [2023-11-06 23:09:14,920 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-06 23:09:14,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38481 conditions, 18859 events. 14480/18859 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 85883 event pairs, 11752 based on Foata normal form. 0/9445 useless extension candidates. Maximal degree in co-relation 38405. Up to 18841 conditions per place. [2023-11-06 23:09:15,067 INFO L140 encePairwiseOnDemand]: 745/758 looper letters, 53 selfloop transitions, 10 changer transitions 0/63 dead transitions. [2023-11-06 23:09:15,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 320 flow [2023-11-06 23:09:15,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:09:15,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:09:15,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1291 transitions. [2023-11-06 23:09:15,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4257915567282322 [2023-11-06 23:09:15,080 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1291 transitions. [2023-11-06 23:09:15,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1291 transitions. [2023-11-06 23:09:15,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:15,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1291 transitions. [2023-11-06 23:09:15,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 322.75) internal successors, (1291), 4 states have internal predecessors, (1291), 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 23:09:15,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 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 23:09:15,096 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 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 23:09:15,096 INFO L175 Difference]: Start difference. First operand has 61 places, 67 transitions, 210 flow. Second operand 4 states and 1291 transitions. [2023-11-06 23:09:15,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 320 flow [2023-11-06 23:09:15,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:09:15,101 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 196 flow [2023-11-06 23:09:15,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2023-11-06 23:09:15,103 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -18 predicate places. [2023-11-06 23:09:15,103 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 196 flow [2023-11-06 23:09:15,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 306.75) internal successors, (1227), 4 states have internal predecessors, (1227), 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 23:09:15,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:15,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:09:15,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:15,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:15,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:09:15,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:15,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1970500, now seen corresponding path program 1 times [2023-11-06 23:09:15,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:15,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710285411] [2023-11-06 23:09:15,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:15,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:15,420 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 23:09:15,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:15,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710285411] [2023-11-06 23:09:15,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710285411] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:15,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349074497] [2023-11-06 23:09:15,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:15,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:15,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:15,422 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:15,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:09:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:15,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:09:15,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:15,579 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 23:09:15,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:15,597 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 23:09:15,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349074497] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:09:15,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:09:15,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 23:09:15,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924407847] [2023-11-06 23:09:15,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:09:15,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:09:15,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:15,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:09:15,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:09:15,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 758 [2023-11-06 23:09:15,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 307.14285714285717) internal successors, (2150), 7 states have internal predecessors, (2150), 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 23:09:15,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:15,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 758 [2023-11-06 23:09:15,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:18,929 INFO L124 PetriNetUnfolderBase]: 14492/18883 cut-off events. [2023-11-06 23:09:18,929 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-06 23:09:18,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38566 conditions, 18883 events. 14492/18883 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 85911 event pairs, 11752 based on Foata normal form. 0/9470 useless extension candidates. Maximal degree in co-relation 38405. Up to 18856 conditions per place. [2023-11-06 23:09:19,065 INFO L140 encePairwiseOnDemand]: 745/758 looper letters, 54 selfloop transitions, 33 changer transitions 0/87 dead transitions. [2023-11-06 23:09:19,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 87 transitions, 490 flow [2023-11-06 23:09:19,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:09:19,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:09:19,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1935 transitions. [2023-11-06 23:09:19,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254617414248021 [2023-11-06 23:09:19,075 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1935 transitions. [2023-11-06 23:09:19,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1935 transitions. [2023-11-06 23:09:19,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:19,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1935 transitions. [2023-11-06 23:09:19,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 322.5) internal successors, (1935), 6 states have internal predecessors, (1935), 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 23:09:19,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 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 23:09:19,100 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 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 23:09:19,100 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 196 flow. Second operand 6 states and 1935 transitions. [2023-11-06 23:09:19,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 87 transitions, 490 flow [2023-11-06 23:09:19,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 87 transitions, 466 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:09:19,104 INFO L231 Difference]: Finished difference. Result has 64 places, 87 transitions, 428 flow [2023-11-06 23:09:19,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=428, PETRI_PLACES=64, PETRI_TRANSITIONS=87} [2023-11-06 23:09:19,106 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -12 predicate places. [2023-11-06 23:09:19,106 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 87 transitions, 428 flow [2023-11-06 23:09:19,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 307.14285714285717) internal successors, (2150), 7 states have internal predecessors, (2150), 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 23:09:19,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:19,108 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 23:09:19,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:19,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-06 23:09:19,314 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:09:19,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:19,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1424513776, now seen corresponding path program 2 times [2023-11-06 23:09:19,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:19,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372524813] [2023-11-06 23:09:19,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:19,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:19,495 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 23:09:19,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:19,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372524813] [2023-11-06 23:09:19,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372524813] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:19,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354499461] [2023-11-06 23:09:19,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:09:19,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:19,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:19,498 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:19,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:09:19,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:09:19,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:09:19,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:09:19,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:19,728 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 23:09:19,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:19,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354499461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:19,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:09:19,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 23:09:19,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836502651] [2023-11-06 23:09:19,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:19,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:19,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:19,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:19,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:09:19,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 758 [2023-11-06 23:09:19,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 87 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 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 23:09:19,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:19,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 758 [2023-11-06 23:09:19,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:22,950 INFO L124 PetriNetUnfolderBase]: 14492/18879 cut-off events. [2023-11-06 23:09:22,950 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-06 23:09:22,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38601 conditions, 18879 events. 14492/18879 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 85898 event pairs, 11752 based on Foata normal form. 4/9475 useless extension candidates. Maximal degree in co-relation 38502. Up to 18844 conditions per place. [2023-11-06 23:09:23,068 INFO L140 encePairwiseOnDemand]: 752/758 looper letters, 77 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2023-11-06 23:09:23,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 554 flow [2023-11-06 23:09:23,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:23,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:09:23,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 997 transitions. [2023-11-06 23:09:23,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4384344766930519 [2023-11-06 23:09:23,075 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 997 transitions. [2023-11-06 23:09:23,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 997 transitions. [2023-11-06 23:09:23,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:23,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 997 transitions. [2023-11-06 23:09:23,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.3333333333333) internal successors, (997), 3 states have internal predecessors, (997), 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 23:09:23,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:09:23,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:09:23,090 INFO L175 Difference]: Start difference. First operand has 64 places, 87 transitions, 428 flow. Second operand 3 states and 997 transitions. [2023-11-06 23:09:23,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 554 flow [2023-11-06 23:09:23,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 83 transitions, 442 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-11-06 23:09:23,097 INFO L231 Difference]: Finished difference. Result has 57 places, 83 transitions, 288 flow [2023-11-06 23:09:23,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=57, PETRI_TRANSITIONS=83} [2023-11-06 23:09:23,099 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -19 predicate places. [2023-11-06 23:09:23,099 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 83 transitions, 288 flow [2023-11-06 23:09:23,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 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 23:09:23,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:23,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:23,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:23,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:23,308 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:09:23,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:23,309 INFO L85 PathProgramCache]: Analyzing trace with hash 241258054, now seen corresponding path program 1 times [2023-11-06 23:09:23,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:23,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76483532] [2023-11-06 23:09:23,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:23,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:23,450 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 23:09:23,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:23,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76483532] [2023-11-06 23:09:23,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76483532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:23,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:23,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:09:23,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965028113] [2023-11-06 23:09:23,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:23,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:23,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:23,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:23,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:23,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 758 [2023-11-06 23:09:23,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 83 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 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 23:09:23,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:23,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 758 [2023-11-06 23:09:23,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:27,695 INFO L124 PetriNetUnfolderBase]: 16164/21135 cut-off events. [2023-11-06 23:09:27,695 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-11-06 23:09:27,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43153 conditions, 21135 events. 16164/21135 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 101008 event pairs, 3441 based on Foata normal form. 0/10724 useless extension candidates. Maximal degree in co-relation 43016. Up to 19178 conditions per place. [2023-11-06 23:09:27,846 INFO L140 encePairwiseOnDemand]: 752/758 looper letters, 104 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2023-11-06 23:09:27,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 108 transitions, 560 flow [2023-11-06 23:09:27,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:27,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:09:27,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1044 transitions. [2023-11-06 23:09:27,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45910290237467016 [2023-11-06 23:09:27,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1044 transitions. [2023-11-06 23:09:27,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1044 transitions. [2023-11-06 23:09:27,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:27,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1044 transitions. [2023-11-06 23:09:27,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 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 23:09:27,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:09:27,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:09:27,870 INFO L175 Difference]: Start difference. First operand has 57 places, 83 transitions, 288 flow. Second operand 3 states and 1044 transitions. [2023-11-06 23:09:27,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 108 transitions, 560 flow [2023-11-06 23:09:27,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 108 transitions, 548 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:09:27,875 INFO L231 Difference]: Finished difference. Result has 58 places, 86 transitions, 304 flow [2023-11-06 23:09:27,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=58, PETRI_TRANSITIONS=86} [2023-11-06 23:09:27,876 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -18 predicate places. [2023-11-06 23:09:27,877 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 86 transitions, 304 flow [2023-11-06 23:09:27,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 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 23:09:27,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:27,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:27,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:09:27,878 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:09:27,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:27,879 INFO L85 PathProgramCache]: Analyzing trace with hash -79181827, now seen corresponding path program 1 times [2023-11-06 23:09:27,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:27,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765936808] [2023-11-06 23:09:27,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:27,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:27,999 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 23:09:28,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:28,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765936808] [2023-11-06 23:09:28,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765936808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:28,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:28,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:09:28,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062974924] [2023-11-06 23:09:28,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:28,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:28,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:28,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:28,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:28,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 758 [2023-11-06 23:09:28,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 86 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 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 23:09:28,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:28,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 758 [2023-11-06 23:09:28,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:31,571 INFO L124 PetriNetUnfolderBase]: 16922/22181 cut-off events. [2023-11-06 23:09:31,572 INFO L125 PetriNetUnfolderBase]: For 2256/2256 co-relation queries the response was YES. [2023-11-06 23:09:31,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48958 conditions, 22181 events. 16922/22181 cut-off events. For 2256/2256 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 102396 event pairs, 4493 based on Foata normal form. 0/14637 useless extension candidates. Maximal degree in co-relation 48825. Up to 18516 conditions per place. [2023-11-06 23:09:31,695 INFO L140 encePairwiseOnDemand]: 754/758 looper letters, 108 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2023-11-06 23:09:31,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 110 transitions, 582 flow [2023-11-06 23:09:31,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:31,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:09:31,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1044 transitions. [2023-11-06 23:09:31,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45910290237467016 [2023-11-06 23:09:31,701 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1044 transitions. [2023-11-06 23:09:31,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1044 transitions. [2023-11-06 23:09:31,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:31,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1044 transitions. [2023-11-06 23:09:31,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 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 23:09:31,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:09:31,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:09:31,713 INFO L175 Difference]: Start difference. First operand has 58 places, 86 transitions, 304 flow. Second operand 3 states and 1044 transitions. [2023-11-06 23:09:31,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 110 transitions, 582 flow [2023-11-06 23:09:31,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 110 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:09:31,717 INFO L231 Difference]: Finished difference. Result has 60 places, 86 transitions, 310 flow [2023-11-06 23:09:31,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=60, PETRI_TRANSITIONS=86} [2023-11-06 23:09:31,718 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -16 predicate places. [2023-11-06 23:09:31,718 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 86 transitions, 310 flow [2023-11-06 23:09:31,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 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 23:09:31,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:31,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:31,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:09:31,720 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:09:31,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:31,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1215805238, now seen corresponding path program 1 times [2023-11-06 23:09:31,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:31,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896431548] [2023-11-06 23:09:31,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:31,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:31,801 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 23:09:31,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:31,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896431548] [2023-11-06 23:09:31,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896431548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:31,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:31,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:09:31,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161972205] [2023-11-06 23:09:31,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:31,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:31,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:31,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:31,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:31,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 758 [2023-11-06 23:09:31,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 86 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 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 23:09:31,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:31,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 758 [2023-11-06 23:09:31,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:34,393 INFO L124 PetriNetUnfolderBase]: 13678/17847 cut-off events. [2023-11-06 23:09:34,394 INFO L125 PetriNetUnfolderBase]: For 2498/2498 co-relation queries the response was YES. [2023-11-06 23:09:34,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40446 conditions, 17847 events. 13678/17847 cut-off events. For 2498/2498 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 79264 event pairs, 3169 based on Foata normal form. 0/12651 useless extension candidates. Maximal degree in co-relation 40311. Up to 15896 conditions per place. [2023-11-06 23:09:34,503 INFO L140 encePairwiseOnDemand]: 754/758 looper letters, 107 selfloop transitions, 2 changer transitions 0/109 dead transitions. [2023-11-06 23:09:34,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 109 transitions, 587 flow [2023-11-06 23:09:34,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:34,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:09:34,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1044 transitions. [2023-11-06 23:09:34,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45910290237467016 [2023-11-06 23:09:34,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1044 transitions. [2023-11-06 23:09:34,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1044 transitions. [2023-11-06 23:09:34,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:34,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1044 transitions. [2023-11-06 23:09:34,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 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 23:09:34,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:09:34,524 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:09:34,524 INFO L175 Difference]: Start difference. First operand has 60 places, 86 transitions, 310 flow. Second operand 3 states and 1044 transitions. [2023-11-06 23:09:34,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 109 transitions, 587 flow [2023-11-06 23:09:34,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 109 transitions, 585 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:09:34,531 INFO L231 Difference]: Finished difference. Result has 62 places, 86 transitions, 318 flow [2023-11-06 23:09:34,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=62, PETRI_TRANSITIONS=86} [2023-11-06 23:09:34,532 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -14 predicate places. [2023-11-06 23:09:34,532 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 86 transitions, 318 flow [2023-11-06 23:09:34,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 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 23:09:34,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:34,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:34,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:09:34,534 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:09:34,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:34,535 INFO L85 PathProgramCache]: Analyzing trace with hash 157755129, now seen corresponding path program 1 times [2023-11-06 23:09:34,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:34,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347362622] [2023-11-06 23:09:34,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:34,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:34,703 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 23:09:34,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:34,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347362622] [2023-11-06 23:09:34,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347362622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:34,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:34,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:09:34,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620506055] [2023-11-06 23:09:34,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:34,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:34,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:34,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:34,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:34,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 758 [2023-11-06 23:09:34,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 86 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 303.25) internal successors, (1213), 4 states have internal predecessors, (1213), 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 23:09:34,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:34,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 758 [2023-11-06 23:09:34,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:37,154 INFO L124 PetriNetUnfolderBase]: 13809/18082 cut-off events. [2023-11-06 23:09:37,154 INFO L125 PetriNetUnfolderBase]: For 3350/3350 co-relation queries the response was YES. [2023-11-06 23:09:37,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42804 conditions, 18082 events. 13809/18082 cut-off events. For 3350/3350 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 83994 event pairs, 11269 based on Foata normal form. 30/13973 useless extension candidates. Maximal degree in co-relation 42141. Up to 17846 conditions per place. [2023-11-06 23:09:37,255 INFO L140 encePairwiseOnDemand]: 753/758 looper letters, 83 selfloop transitions, 2 changer transitions 49/134 dead transitions. [2023-11-06 23:09:37,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 134 transitions, 765 flow [2023-11-06 23:09:37,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:09:37,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:09:37,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1279 transitions. [2023-11-06 23:09:37,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42183377308707126 [2023-11-06 23:09:37,263 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1279 transitions. [2023-11-06 23:09:37,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1279 transitions. [2023-11-06 23:09:37,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:37,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1279 transitions. [2023-11-06 23:09:37,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 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 23:09:37,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 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 23:09:37,280 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 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 23:09:37,280 INFO L175 Difference]: Start difference. First operand has 62 places, 86 transitions, 318 flow. Second operand 4 states and 1279 transitions. [2023-11-06 23:09:37,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 134 transitions, 765 flow [2023-11-06 23:09:37,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 134 transitions, 763 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:09:37,287 INFO L231 Difference]: Finished difference. Result has 65 places, 85 transitions, 320 flow [2023-11-06 23:09:37,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=65, PETRI_TRANSITIONS=85} [2023-11-06 23:09:37,289 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -11 predicate places. [2023-11-06 23:09:37,289 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 85 transitions, 320 flow [2023-11-06 23:09:37,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 303.25) internal successors, (1213), 4 states have internal predecessors, (1213), 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 23:09:37,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:37,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:37,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:09:37,291 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:09:37,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:37,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1369045691, now seen corresponding path program 1 times [2023-11-06 23:09:37,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:37,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410742605] [2023-11-06 23:09:37,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:37,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:37,494 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 23:09:37,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:37,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410742605] [2023-11-06 23:09:37,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410742605] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:37,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745912099] [2023-11-06 23:09:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:37,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:37,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:37,497 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:37,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:09:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:37,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:09:37,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:37,731 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 23:09:37,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:37,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745912099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:37,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:09:37,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-11-06 23:09:37,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149136792] [2023-11-06 23:09:37,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:37,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:37,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:37,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:37,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:09:37,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 758 [2023-11-06 23:09:37,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 85 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 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 23:09:37,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:37,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 758 [2023-11-06 23:09:37,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:39,040 INFO L124 PetriNetUnfolderBase]: 5902/7771 cut-off events. [2023-11-06 23:09:39,040 INFO L125 PetriNetUnfolderBase]: For 2272/2272 co-relation queries the response was YES. [2023-11-06 23:09:39,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18866 conditions, 7771 events. 5902/7771 cut-off events. For 2272/2272 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 31732 event pairs, 4571 based on Foata normal form. 1214/7670 useless extension candidates. Maximal degree in co-relation 18846. Up to 7771 conditions per place. [2023-11-06 23:09:39,086 INFO L140 encePairwiseOnDemand]: 751/758 looper letters, 78 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2023-11-06 23:09:39,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 79 transitions, 462 flow [2023-11-06 23:09:39,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:39,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:09:39,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1023 transitions. [2023-11-06 23:09:39,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449868073878628 [2023-11-06 23:09:39,092 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1023 transitions. [2023-11-06 23:09:39,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1023 transitions. [2023-11-06 23:09:39,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:39,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1023 transitions. [2023-11-06 23:09:39,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 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 23:09:39,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:09:39,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:09:39,106 INFO L175 Difference]: Start difference. First operand has 65 places, 85 transitions, 320 flow. Second operand 3 states and 1023 transitions. [2023-11-06 23:09:39,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 79 transitions, 462 flow [2023-11-06 23:09:39,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 79 transitions, 456 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 23:09:39,112 INFO L231 Difference]: Finished difference. Result has 58 places, 79 transitions, 300 flow [2023-11-06 23:09:39,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=58, PETRI_TRANSITIONS=79} [2023-11-06 23:09:39,113 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -18 predicate places. [2023-11-06 23:09:39,113 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 79 transitions, 300 flow [2023-11-06 23:09:39,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 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 23:09:39,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:39,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:39,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:39,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:39,321 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:09:39,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:39,322 INFO L85 PathProgramCache]: Analyzing trace with hash 509258052, now seen corresponding path program 1 times [2023-11-06 23:09:39,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:39,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363489043] [2023-11-06 23:09:39,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:39,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:39,450 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 23:09:39,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:39,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363489043] [2023-11-06 23:09:39,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363489043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:39,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:39,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:09:39,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77394327] [2023-11-06 23:09:39,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:39,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:39,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:39,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:39,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:39,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 758 [2023-11-06 23:09:39,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 79 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 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 23:09:39,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:39,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 758 [2023-11-06 23:09:39,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:40,494 INFO L124 PetriNetUnfolderBase]: 5544/7307 cut-off events. [2023-11-06 23:09:40,495 INFO L125 PetriNetUnfolderBase]: For 1908/1908 co-relation queries the response was YES. [2023-11-06 23:09:40,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17852 conditions, 7307 events. 5544/7307 cut-off events. For 1908/1908 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 28461 event pairs, 1475 based on Foata normal form. 206/6204 useless extension candidates. Maximal degree in co-relation 17837. Up to 6417 conditions per place. [2023-11-06 23:09:40,534 INFO L140 encePairwiseOnDemand]: 754/758 looper letters, 93 selfloop transitions, 2 changer transitions 8/103 dead transitions. [2023-11-06 23:09:40,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 103 transitions, 571 flow [2023-11-06 23:09:40,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:40,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:09:40,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1040 transitions. [2023-11-06 23:09:40,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573438874230431 [2023-11-06 23:09:40,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1040 transitions. [2023-11-06 23:09:40,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1040 transitions. [2023-11-06 23:09:40,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:40,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1040 transitions. [2023-11-06 23:09:40,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 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 23:09:40,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:09:40,550 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:09:40,550 INFO L175 Difference]: Start difference. First operand has 58 places, 79 transitions, 300 flow. Second operand 3 states and 1040 transitions. [2023-11-06 23:09:40,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 103 transitions, 571 flow [2023-11-06 23:09:40,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:09:40,556 INFO L231 Difference]: Finished difference. Result has 60 places, 80 transitions, 313 flow [2023-11-06 23:09:40,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=60, PETRI_TRANSITIONS=80} [2023-11-06 23:09:40,557 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -16 predicate places. [2023-11-06 23:09:40,557 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 80 transitions, 313 flow [2023-11-06 23:09:40,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 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 23:09:40,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:40,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:40,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:09:40,559 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:09:40,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:40,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1392858627, now seen corresponding path program 1 times [2023-11-06 23:09:40,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:40,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620137462] [2023-11-06 23:09:40,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:40,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:40,738 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 23:09:40,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:40,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620137462] [2023-11-06 23:09:40,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620137462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:40,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:40,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:09:40,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91824386] [2023-11-06 23:09:40,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:40,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:40,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:40,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:40,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:40,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 758 [2023-11-06 23:09:40,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 80 transitions, 313 flow. Second operand has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 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 23:09:40,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:40,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 758 [2023-11-06 23:09:40,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:42,077 INFO L124 PetriNetUnfolderBase]: 5733/7628 cut-off events. [2023-11-06 23:09:42,077 INFO L125 PetriNetUnfolderBase]: For 2303/2303 co-relation queries the response was YES. [2023-11-06 23:09:42,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19484 conditions, 7628 events. 5733/7628 cut-off events. For 2303/2303 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 31269 event pairs, 4436 based on Foata normal form. 16/6494 useless extension candidates. Maximal degree in co-relation 19467. Up to 7287 conditions per place. [2023-11-06 23:09:42,128 INFO L140 encePairwiseOnDemand]: 752/758 looper letters, 72 selfloop transitions, 7 changer transitions 31/110 dead transitions. [2023-11-06 23:09:42,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 110 transitions, 630 flow [2023-11-06 23:09:42,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:09:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:09:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1271 transitions. [2023-11-06 23:09:42,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4191952506596306 [2023-11-06 23:09:42,134 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1271 transitions. [2023-11-06 23:09:42,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1271 transitions. [2023-11-06 23:09:42,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:42,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1271 transitions. [2023-11-06 23:09:42,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 317.75) internal successors, (1271), 4 states have internal predecessors, (1271), 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 23:09:42,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 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 23:09:42,149 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 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 23:09:42,149 INFO L175 Difference]: Start difference. First operand has 60 places, 80 transitions, 313 flow. Second operand 4 states and 1271 transitions. [2023-11-06 23:09:42,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 110 transitions, 630 flow [2023-11-06 23:09:42,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 110 transitions, 628 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:09:42,157 INFO L231 Difference]: Finished difference. Result has 63 places, 79 transitions, 331 flow [2023-11-06 23:09:42,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=331, PETRI_PLACES=63, PETRI_TRANSITIONS=79} [2023-11-06 23:09:42,158 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -13 predicate places. [2023-11-06 23:09:42,159 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 79 transitions, 331 flow [2023-11-06 23:09:42,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 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 23:09:42,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:42,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:42,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:09:42,160 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:09:42,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:42,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1968983616, now seen corresponding path program 1 times [2023-11-06 23:09:42,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:42,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241303506] [2023-11-06 23:09:42,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:42,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:42,412 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 23:09:42,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:42,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241303506] [2023-11-06 23:09:42,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241303506] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:42,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101916431] [2023-11-06 23:09:42,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:42,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:42,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:42,415 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:42,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:09:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:42,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:09:42,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:42,691 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 23:09:42,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:42,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101916431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:42,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:09:42,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-06 23:09:42,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001596575] [2023-11-06 23:09:42,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:42,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:42,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:42,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:42,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:09:42,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 758 [2023-11-06 23:09:42,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 79 transitions, 331 flow. Second operand has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 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 23:09:42,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:42,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 758 [2023-11-06 23:09:42,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:43,460 INFO L124 PetriNetUnfolderBase]: 3883/5150 cut-off events. [2023-11-06 23:09:43,460 INFO L125 PetriNetUnfolderBase]: For 1854/1854 co-relation queries the response was YES. [2023-11-06 23:09:43,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13152 conditions, 5150 events. 3883/5150 cut-off events. For 1854/1854 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 19619 event pairs, 2887 based on Foata normal form. 104/4731 useless extension candidates. Maximal degree in co-relation 13133. Up to 5150 conditions per place. [2023-11-06 23:09:43,483 INFO L140 encePairwiseOnDemand]: 755/758 looper letters, 76 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2023-11-06 23:09:43,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 77 transitions, 477 flow [2023-11-06 23:09:43,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:09:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1017 transitions. [2023-11-06 23:09:43,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472295514511873 [2023-11-06 23:09:43,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1017 transitions. [2023-11-06 23:09:43,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1017 transitions. [2023-11-06 23:09:43,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:43,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1017 transitions. [2023-11-06 23:09:43,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 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 23:09:43,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:09:43,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:09:43,499 INFO L175 Difference]: Start difference. First operand has 63 places, 79 transitions, 331 flow. Second operand 3 states and 1017 transitions. [2023-11-06 23:09:43,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 77 transitions, 477 flow [2023-11-06 23:09:43,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 77 transitions, 459 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-06 23:09:43,505 INFO L231 Difference]: Finished difference. Result has 60 places, 77 transitions, 307 flow [2023-11-06 23:09:43,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=307, PETRI_PLACES=60, PETRI_TRANSITIONS=77} [2023-11-06 23:09:43,506 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -16 predicate places. [2023-11-06 23:09:43,507 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 77 transitions, 307 flow [2023-11-06 23:09:43,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 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 23:09:43,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:43,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:43,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:43,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 23:09:43,715 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:09:43,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:43,715 INFO L85 PathProgramCache]: Analyzing trace with hash -908948397, now seen corresponding path program 1 times [2023-11-06 23:09:43,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:43,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131435361] [2023-11-06 23:09:43,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:43,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:43,946 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 23:09:43,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:43,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131435361] [2023-11-06 23:09:43,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131435361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:43,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:43,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:09:43,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320564649] [2023-11-06 23:09:43,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:43,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:43,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:43,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:43,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:44,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 758 [2023-11-06 23:09:44,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 77 transitions, 307 flow. Second operand has 4 states, 4 states have (on average 304.5) internal successors, (1218), 4 states have internal predecessors, (1218), 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 23:09:44,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:44,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 758 [2023-11-06 23:09:44,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:44,986 INFO L124 PetriNetUnfolderBase]: 4087/5493 cut-off events. [2023-11-06 23:09:44,986 INFO L125 PetriNetUnfolderBase]: For 1801/1801 co-relation queries the response was YES. [2023-11-06 23:09:45,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13899 conditions, 5493 events. 4087/5493 cut-off events. For 1801/1801 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 21263 event pairs, 3088 based on Foata normal form. 24/4993 useless extension candidates. Maximal degree in co-relation 13881. Up to 5121 conditions per place. [2023-11-06 23:09:45,018 INFO L140 encePairwiseOnDemand]: 747/758 looper letters, 59 selfloop transitions, 17 changer transitions 24/100 dead transitions. [2023-11-06 23:09:45,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 100 transitions, 571 flow [2023-11-06 23:09:45,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:09:45,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:09:45,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1574 transitions. [2023-11-06 23:09:45,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41530343007915566 [2023-11-06 23:09:45,026 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1574 transitions. [2023-11-06 23:09:45,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1574 transitions. [2023-11-06 23:09:45,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:45,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1574 transitions. [2023-11-06 23:09:45,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 314.8) internal successors, (1574), 5 states have internal predecessors, (1574), 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 23:09:45,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 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 23:09:45,041 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 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 23:09:45,041 INFO L175 Difference]: Start difference. First operand has 60 places, 77 transitions, 307 flow. Second operand 5 states and 1574 transitions. [2023-11-06 23:09:45,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 100 transitions, 571 flow [2023-11-06 23:09:45,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 100 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:09:45,047 INFO L231 Difference]: Finished difference. Result has 64 places, 76 transitions, 355 flow [2023-11-06 23:09:45,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=64, PETRI_TRANSITIONS=76} [2023-11-06 23:09:45,048 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -12 predicate places. [2023-11-06 23:09:45,048 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 76 transitions, 355 flow [2023-11-06 23:09:45,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 304.5) internal successors, (1218), 4 states have internal predecessors, (1218), 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 23:09:45,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:45,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:45,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 23:09:45,050 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:09:45,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:45,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1473998372, now seen corresponding path program 1 times [2023-11-06 23:09:45,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:45,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311019558] [2023-11-06 23:09:45,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:45,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:09:45,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:45,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311019558] [2023-11-06 23:09:45,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311019558] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:45,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585053494] [2023-11-06 23:09:45,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:45,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:45,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:45,293 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:45,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:09:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:45,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:09:45,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:45,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:09:45,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:45,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585053494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:45,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:09:45,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-06 23:09:45,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368061107] [2023-11-06 23:09:45,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:45,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:45,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:45,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:45,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:09:45,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 758 [2023-11-06 23:09:45,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 355 flow. Second operand has 3 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 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 23:09:45,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:45,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 758 [2023-11-06 23:09:45,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:46,130 INFO L124 PetriNetUnfolderBase]: 2702/3613 cut-off events. [2023-11-06 23:09:46,130 INFO L125 PetriNetUnfolderBase]: For 1355/1355 co-relation queries the response was YES. [2023-11-06 23:09:46,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9209 conditions, 3613 events. 2702/3613 cut-off events. For 1355/1355 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 12776 event pairs, 1951 based on Foata normal form. 84/3527 useless extension candidates. Maximal degree in co-relation 9189. Up to 3613 conditions per place. [2023-11-06 23:09:46,147 INFO L140 encePairwiseOnDemand]: 755/758 looper letters, 73 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-11-06 23:09:46,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 74 transitions, 495 flow [2023-11-06 23:09:46,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:46,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:09:46,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1015 transitions. [2023-11-06 23:09:46,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4463500439753738 [2023-11-06 23:09:46,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1015 transitions. [2023-11-06 23:09:46,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1015 transitions. [2023-11-06 23:09:46,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:46,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1015 transitions. [2023-11-06 23:09:46,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.3333333333333) internal successors, (1015), 3 states have internal predecessors, (1015), 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 23:09:46,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:09:46,162 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:09:46,162 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 355 flow. Second operand 3 states and 1015 transitions. [2023-11-06 23:09:46,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 74 transitions, 495 flow [2023-11-06 23:09:46,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 74 transitions, 474 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 23:09:46,167 INFO L231 Difference]: Finished difference. Result has 62 places, 74 transitions, 328 flow [2023-11-06 23:09:46,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=62, PETRI_TRANSITIONS=74} [2023-11-06 23:09:46,168 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -14 predicate places. [2023-11-06 23:09:46,169 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 74 transitions, 328 flow [2023-11-06 23:09:46,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 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 23:09:46,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:46,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:46,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:46,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 23:09:46,376 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:09:46,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:46,376 INFO L85 PathProgramCache]: Analyzing trace with hash 141413141, now seen corresponding path program 1 times [2023-11-06 23:09:46,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:46,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141308665] [2023-11-06 23:09:46,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:46,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:46,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:09:46,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:46,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141308665] [2023-11-06 23:09:46,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141308665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:46,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:46,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:09:46,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730508097] [2023-11-06 23:09:46,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:46,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:46,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:46,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:46,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:46,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 758 [2023-11-06 23:09:46,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 74 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 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 23:09:46,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:46,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 758 [2023-11-06 23:09:46,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:47,548 INFO L124 PetriNetUnfolderBase]: 3043/4157 cut-off events. [2023-11-06 23:09:47,548 INFO L125 PetriNetUnfolderBase]: For 1427/1427 co-relation queries the response was YES. [2023-11-06 23:09:47,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10455 conditions, 4157 events. 3043/4157 cut-off events. For 1427/1427 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 15272 event pairs, 2245 based on Foata normal form. 36/4023 useless extension candidates. Maximal degree in co-relation 10435. Up to 3603 conditions per place. [2023-11-06 23:09:47,572 INFO L140 encePairwiseOnDemand]: 748/758 looper letters, 66 selfloop transitions, 7 changer transitions 47/120 dead transitions. [2023-11-06 23:09:47,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 120 transitions, 738 flow [2023-11-06 23:09:47,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:09:47,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:09:47,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1580 transitions. [2023-11-06 23:09:47,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41688654353562005 [2023-11-06 23:09:47,579 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1580 transitions. [2023-11-06 23:09:47,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1580 transitions. [2023-11-06 23:09:47,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:47,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1580 transitions. [2023-11-06 23:09:47,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 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 23:09:47,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 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 23:09:47,596 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 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 23:09:47,596 INFO L175 Difference]: Start difference. First operand has 62 places, 74 transitions, 328 flow. Second operand 5 states and 1580 transitions. [2023-11-06 23:09:47,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 120 transitions, 738 flow [2023-11-06 23:09:47,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 120 transitions, 737 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:09:47,602 INFO L231 Difference]: Finished difference. Result has 67 places, 73 transitions, 359 flow [2023-11-06 23:09:47,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=359, PETRI_PLACES=67, PETRI_TRANSITIONS=73} [2023-11-06 23:09:47,604 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -9 predicate places. [2023-11-06 23:09:47,604 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 73 transitions, 359 flow [2023-11-06 23:09:47,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 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 23:09:47,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:47,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:47,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 23:09:47,605 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:09:47,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:47,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1178589706, now seen corresponding path program 1 times [2023-11-06 23:09:47,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:47,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664587263] [2023-11-06 23:09:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:47,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:47,853 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 23:09:47,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:47,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664587263] [2023-11-06 23:09:47,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664587263] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:47,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179366958] [2023-11-06 23:09:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:47,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:47,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:47,856 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:47,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:09:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:48,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:09:48,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:48,256 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 23:09:48,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:48,424 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 23:09:48,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179366958] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:09:48,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:09:48,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2023-11-06 23:09:48,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835794481] [2023-11-06 23:09:48,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:09:48,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 23:09:48,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:48,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 23:09:48,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:09:49,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 758 [2023-11-06 23:09:49,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 73 transitions, 359 flow. Second operand has 12 states, 12 states have (on average 290.4166666666667) internal successors, (3485), 12 states have internal predecessors, (3485), 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 23:09:49,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:49,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 758 [2023-11-06 23:09:49,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:50,871 INFO L124 PetriNetUnfolderBase]: 3891/5496 cut-off events. [2023-11-06 23:09:50,872 INFO L125 PetriNetUnfolderBase]: For 1932/1932 co-relation queries the response was YES. [2023-11-06 23:09:50,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13841 conditions, 5496 events. 3891/5496 cut-off events. For 1932/1932 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 22438 event pairs, 1546 based on Foata normal form. 256/5582 useless extension candidates. Maximal degree in co-relation 13818. Up to 3371 conditions per place. [2023-11-06 23:09:50,915 INFO L140 encePairwiseOnDemand]: 744/758 looper letters, 65 selfloop transitions, 9 changer transitions 189/263 dead transitions. [2023-11-06 23:09:50,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 263 transitions, 1588 flow [2023-11-06 23:09:50,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 23:09:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 23:09:50,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5632 transitions. [2023-11-06 23:09:50,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3910567976669907 [2023-11-06 23:09:50,934 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5632 transitions. [2023-11-06 23:09:50,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5632 transitions. [2023-11-06 23:09:50,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:50,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5632 transitions. [2023-11-06 23:09:50,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 296.42105263157896) internal successors, (5632), 19 states have internal predecessors, (5632), 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 23:09:50,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 758.0) internal successors, (15160), 20 states have internal predecessors, (15160), 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 23:09:50,972 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 758.0) internal successors, (15160), 20 states have internal predecessors, (15160), 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 23:09:50,973 INFO L175 Difference]: Start difference. First operand has 67 places, 73 transitions, 359 flow. Second operand 19 states and 5632 transitions. [2023-11-06 23:09:50,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 263 transitions, 1588 flow [2023-11-06 23:09:50,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 263 transitions, 1458 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-11-06 23:09:50,983 INFO L231 Difference]: Finished difference. Result has 86 places, 71 transitions, 348 flow [2023-11-06 23:09:50,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=348, PETRI_PLACES=86, PETRI_TRANSITIONS=71} [2023-11-06 23:09:50,984 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 10 predicate places. [2023-11-06 23:09:50,985 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 71 transitions, 348 flow [2023-11-06 23:09:50,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 290.4166666666667) internal successors, (3485), 12 states have internal predecessors, (3485), 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 23:09:50,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:50,986 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:50,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:51,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 23:09:51,193 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:09:51,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:51,194 INFO L85 PathProgramCache]: Analyzing trace with hash 152511465, now seen corresponding path program 2 times [2023-11-06 23:09:51,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:51,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777537049] [2023-11-06 23:09:51,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:51,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:51,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 23:09:51,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:51,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777537049] [2023-11-06 23:09:51,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777537049] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:51,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288422193] [2023-11-06 23:09:51,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:09:51,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:51,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:51,493 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:51,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 23:09:51,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:09:51,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:09:51,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:09:51,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 23:09:51,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:51,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288422193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:51,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:09:51,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2023-11-06 23:09:51,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909926641] [2023-11-06 23:09:51,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:51,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:51,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:51,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:51,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:09:51,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 758 [2023-11-06 23:09:51,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 327.75) internal successors, (1311), 4 states have internal predecessors, (1311), 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 23:09:51,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:51,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 758 [2023-11-06 23:09:51,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:53,578 INFO L124 PetriNetUnfolderBase]: 7431/9870 cut-off events. [2023-11-06 23:09:53,578 INFO L125 PetriNetUnfolderBase]: For 11603/11603 co-relation queries the response was YES. [2023-11-06 23:09:53,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30189 conditions, 9870 events. 7431/9870 cut-off events. For 11603/11603 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 40250 event pairs, 2511 based on Foata normal form. 252/9612 useless extension candidates. Maximal degree in co-relation 30163. Up to 3919 conditions per place. [2023-11-06 23:09:53,652 INFO L140 encePairwiseOnDemand]: 751/758 looper letters, 111 selfloop transitions, 11 changer transitions 0/122 dead transitions. [2023-11-06 23:09:53,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 122 transitions, 786 flow [2023-11-06 23:09:53,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:09:53,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:09:53,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1379 transitions. [2023-11-06 23:09:53,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45481530343007914 [2023-11-06 23:09:53,658 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1379 transitions. [2023-11-06 23:09:53,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1379 transitions. [2023-11-06 23:09:53,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:53,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1379 transitions. [2023-11-06 23:09:53,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 344.75) internal successors, (1379), 4 states have internal predecessors, (1379), 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 23:09:53,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 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 23:09:53,666 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 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 23:09:53,666 INFO L175 Difference]: Start difference. First operand has 86 places, 71 transitions, 348 flow. Second operand 4 states and 1379 transitions. [2023-11-06 23:09:53,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 122 transitions, 786 flow [2023-11-06 23:09:53,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 122 transitions, 724 flow, removed 22 selfloop flow, removed 10 redundant places. [2023-11-06 23:09:53,691 INFO L231 Difference]: Finished difference. Result has 70 places, 80 transitions, 400 flow [2023-11-06 23:09:53,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=400, PETRI_PLACES=70, PETRI_TRANSITIONS=80} [2023-11-06 23:09:53,692 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -6 predicate places. [2023-11-06 23:09:53,692 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 80 transitions, 400 flow [2023-11-06 23:09:53,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 327.75) internal successors, (1311), 4 states have internal predecessors, (1311), 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 23:09:53,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:53,693 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:53,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-06 23:09:53,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 23:09:53,899 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:09:53,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:53,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1771392117, now seen corresponding path program 1 times [2023-11-06 23:09:53,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:53,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829260952] [2023-11-06 23:09:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:53,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 23:09:54,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:54,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829260952] [2023-11-06 23:09:54,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829260952] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:54,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347651296] [2023-11-06 23:09:54,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:54,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:54,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:54,352 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:54,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 23:09:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:54,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:09:54,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 23:09:54,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:54,908 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 23:09:54,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347651296] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:09:54,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:09:54,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2023-11-06 23:09:54,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759651683] [2023-11-06 23:09:54,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:09:54,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 23:09:54,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:54,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 23:09:54,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:09:55,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 758 [2023-11-06 23:09:55,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 80 transitions, 400 flow. Second operand has 15 states, 15 states have (on average 288.06666666666666) internal successors, (4321), 15 states have internal predecessors, (4321), 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 23:09:55,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:55,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 758 [2023-11-06 23:09:55,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:00,576 INFO L124 PetriNetUnfolderBase]: 19108/25833 cut-off events. [2023-11-06 23:10:00,577 INFO L125 PetriNetUnfolderBase]: For 37725/37725 co-relation queries the response was YES. [2023-11-06 23:10:00,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83560 conditions, 25833 events. 19108/25833 cut-off events. For 37725/37725 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 124368 event pairs, 7576 based on Foata normal form. 962/25451 useless extension candidates. Maximal degree in co-relation 83538. Up to 9525 conditions per place. [2023-11-06 23:10:00,772 INFO L140 encePairwiseOnDemand]: 747/758 looper letters, 158 selfloop transitions, 13 changer transitions 155/326 dead transitions. [2023-11-06 23:10:00,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 326 transitions, 2032 flow [2023-11-06 23:10:00,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 23:10:00,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-06 23:10:00,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 6785 transitions. [2023-11-06 23:10:00,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891820580474934 [2023-11-06 23:10:00,790 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 6785 transitions. [2023-11-06 23:10:00,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 6785 transitions. [2023-11-06 23:10:00,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:00,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 6785 transitions. [2023-11-06 23:10:00,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 295.0) internal successors, (6785), 23 states have internal predecessors, (6785), 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 23:10:00,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 758.0) internal successors, (18192), 24 states have internal predecessors, (18192), 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 23:10:00,826 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 758.0) internal successors, (18192), 24 states have internal predecessors, (18192), 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 23:10:00,826 INFO L175 Difference]: Start difference. First operand has 70 places, 80 transitions, 400 flow. Second operand 23 states and 6785 transitions. [2023-11-06 23:10:00,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 326 transitions, 2032 flow [2023-11-06 23:10:00,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 326 transitions, 1960 flow, removed 36 selfloop flow, removed 0 redundant places. [2023-11-06 23:10:00,929 INFO L231 Difference]: Finished difference. Result has 102 places, 81 transitions, 458 flow [2023-11-06 23:10:00,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=458, PETRI_PLACES=102, PETRI_TRANSITIONS=81} [2023-11-06 23:10:00,930 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 26 predicate places. [2023-11-06 23:10:00,930 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 81 transitions, 458 flow [2023-11-06 23:10:00,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 288.06666666666666) internal successors, (4321), 15 states have internal predecessors, (4321), 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 23:10:00,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:00,931 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:00,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:01,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 23:10:01,132 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 23:10:01,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:01,132 INFO L85 PathProgramCache]: Analyzing trace with hash -107332513, now seen corresponding path program 1 times [2023-11-06 23:10:01,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:01,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279270883] [2023-11-06 23:10:01,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:01,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:01,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 23:10:01,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:01,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279270883] [2023-11-06 23:10:01,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279270883] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:01,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043716144] [2023-11-06 23:10:01,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:01,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:01,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:01,488 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:01,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 23:10:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:01,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:10:01,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:01,882 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 23:10:01,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:01,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043716144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:01,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:10:01,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-06 23:10:01,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134411795] [2023-11-06 23:10:01,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:01,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:10:01,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:01,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:10:01,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:10:01,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 758 [2023-11-06 23:10:01,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 81 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 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 23:10:01,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:01,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 758 [2023-11-06 23:10:01,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:05,071 INFO L124 PetriNetUnfolderBase]: 12480/16835 cut-off events. [2023-11-06 23:10:05,071 INFO L125 PetriNetUnfolderBase]: For 55935/55935 co-relation queries the response was YES. [2023-11-06 23:10:05,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61166 conditions, 16835 events. 12480/16835 cut-off events. For 55935/55935 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 78772 event pairs, 9200 based on Foata normal form. 576/17411 useless extension candidates. Maximal degree in co-relation 61132. Up to 16835 conditions per place. [2023-11-06 23:10:05,187 INFO L140 encePairwiseOnDemand]: 755/758 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2023-11-06 23:10:05,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 79 transitions, 606 flow [2023-11-06 23:10:05,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:10:05,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:10:05,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1013 transitions. [2023-11-06 23:10:05,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44547053649956025 [2023-11-06 23:10:05,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1013 transitions. [2023-11-06 23:10:05,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1013 transitions. [2023-11-06 23:10:05,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:05,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1013 transitions. [2023-11-06 23:10:05,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 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 23:10:05,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:10:05,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 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 23:10:05,196 INFO L175 Difference]: Start difference. First operand has 102 places, 81 transitions, 458 flow. Second operand 3 states and 1013 transitions. [2023-11-06 23:10:05,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 79 transitions, 606 flow [2023-11-06 23:10:05,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 79 transitions, 557 flow, removed 18 selfloop flow, removed 13 redundant places. [2023-11-06 23:10:05,327 INFO L231 Difference]: Finished difference. Result has 77 places, 0 transitions, 0 flow [2023-11-06 23:10:05,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=77, PETRI_TRANSITIONS=0} [2023-11-06 23:10:05,328 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2023-11-06 23:10:05,328 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 0 transitions, 0 flow [2023-11-06 23:10:05,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 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 23:10:05,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 60 remaining) [2023-11-06 23:10:05,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 60 remaining) [2023-11-06 23:10:05,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 60 remaining) [2023-11-06 23:10:05,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 60 remaining) [2023-11-06 23:10:05,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 60 remaining) [2023-11-06 23:10:05,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 60 remaining) [2023-11-06 23:10:05,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 60 remaining) [2023-11-06 23:10:05,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 60 remaining) [2023-11-06 23:10:05,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 60 remaining) [2023-11-06 23:10:05,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 60 remaining) [2023-11-06 23:10:05,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 60 remaining) [2023-11-06 23:10:05,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 60 remaining) [2023-11-06 23:10:05,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 60 remaining) [2023-11-06 23:10:05,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 60 remaining) [2023-11-06 23:10:05,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 60 remaining) [2023-11-06 23:10:05,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 60 remaining) [2023-11-06 23:10:05,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 60 remaining) [2023-11-06 23:10:05,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 60 remaining) [2023-11-06 23:10:05,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 60 remaining) [2023-11-06 23:10:05,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 60 remaining) [2023-11-06 23:10:05,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 60 remaining) [2023-11-06 23:10:05,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 60 remaining) [2023-11-06 23:10:05,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 60 remaining) [2023-11-06 23:10:05,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 60 remaining) [2023-11-06 23:10:05,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 60 remaining) [2023-11-06 23:10:05,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 60 remaining) [2023-11-06 23:10:05,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 60 remaining) [2023-11-06 23:10:05,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 60 remaining) [2023-11-06 23:10:05,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 60 remaining) [2023-11-06 23:10:05,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 60 remaining) [2023-11-06 23:10:05,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 60 remaining) [2023-11-06 23:10:05,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 60 remaining) [2023-11-06 23:10:05,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 60 remaining) [2023-11-06 23:10:05,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 60 remaining) [2023-11-06 23:10:05,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 60 remaining) [2023-11-06 23:10:05,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 60 remaining) [2023-11-06 23:10:05,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 60 remaining) [2023-11-06 23:10:05,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 60 remaining) [2023-11-06 23:10:05,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 60 remaining) [2023-11-06 23:10:05,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 60 remaining) [2023-11-06 23:10:05,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 60 remaining) [2023-11-06 23:10:05,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 60 remaining) [2023-11-06 23:10:05,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 60 remaining) [2023-11-06 23:10:05,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 60 remaining) [2023-11-06 23:10:05,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 60 remaining) [2023-11-06 23:10:05,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 60 remaining) [2023-11-06 23:10:05,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 60 remaining) [2023-11-06 23:10:05,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 60 remaining) [2023-11-06 23:10:05,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 60 remaining) [2023-11-06 23:10:05,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 60 remaining) [2023-11-06 23:10:05,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 60 remaining) [2023-11-06 23:10:05,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 60 remaining) [2023-11-06 23:10:05,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 60 remaining) [2023-11-06 23:10:05,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 60 remaining) [2023-11-06 23:10:05,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 60 remaining) [2023-11-06 23:10:05,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 60 remaining) [2023-11-06 23:10:05,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 60 remaining) [2023-11-06 23:10:05,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 60 remaining) [2023-11-06 23:10:05,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 60 remaining) [2023-11-06 23:10:05,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 60 remaining) [2023-11-06 23:10:05,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:05,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:05,548 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:05,553 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 23:10:05,553 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:10:05,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:10:05 BasicIcfg [2023-11-06 23:10:05,558 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:10:05,559 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:10:05,559 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:10:05,559 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:10:05,560 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:08:45" (3/4) ... [2023-11-06 23:10:05,561 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 23:10:05,565 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 23:10:05,565 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 23:10:05,565 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 23:10:05,566 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2023-11-06 23:10:05,577 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2023-11-06 23:10:05,578 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 23:10:05,578 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 23:10:05,579 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 23:10:05,669 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:10:05,669 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 23:10:05,669 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:10:05,670 INFO L158 Benchmark]: Toolchain (without parser) took 82750.34ms. Allocated memory was 123.7MB in the beginning and 6.1GB in the end (delta: 5.9GB). Free memory was 63.5MB in the beginning and 2.2GB in the end (delta: -2.2GB). Peak memory consumption was 3.8GB. Max. memory is 16.1GB. [2023-11-06 23:10:05,671 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 96.5MB. Free memory was 51.2MB in the beginning and 51.0MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:10:05,671 INFO L158 Benchmark]: CACSL2BoogieTranslator took 534.95ms. Allocated memory is still 123.7MB. Free memory was 63.3MB in the beginning and 92.0MB in the end (delta: -28.7MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2023-11-06 23:10:05,672 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.35ms. Allocated memory is still 123.7MB. Free memory was 92.0MB in the beginning and 88.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 23:10:05,672 INFO L158 Benchmark]: Boogie Preprocessor took 72.41ms. Allocated memory is still 123.7MB. Free memory was 88.5MB in the beginning and 85.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:10:05,673 INFO L158 Benchmark]: RCFGBuilder took 2108.18ms. Allocated memory is still 123.7MB. Free memory was 85.7MB in the beginning and 67.2MB in the end (delta: 18.5MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2023-11-06 23:10:05,673 INFO L158 Benchmark]: TraceAbstraction took 79821.04ms. Allocated memory was 123.7MB in the beginning and 6.1GB in the end (delta: 5.9GB). Free memory was 66.5MB in the beginning and 2.2GB in the end (delta: -2.2GB). Peak memory consumption was 3.8GB. Max. memory is 16.1GB. [2023-11-06 23:10:05,674 INFO L158 Benchmark]: Witness Printer took 111.07ms. Allocated memory is still 6.1GB. Free memory was 2.2GB in the beginning and 2.2GB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 23:10:05,676 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 96.5MB. Free memory was 51.2MB in the beginning and 51.0MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 534.95ms. Allocated memory is still 123.7MB. Free memory was 63.3MB in the beginning and 92.0MB in the end (delta: -28.7MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.35ms. Allocated memory is still 123.7MB. Free memory was 92.0MB in the beginning and 88.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.41ms. Allocated memory is still 123.7MB. Free memory was 88.5MB in the beginning and 85.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2108.18ms. Allocated memory is still 123.7MB. Free memory was 85.7MB in the beginning and 67.2MB in the end (delta: 18.5MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 79821.04ms. Allocated memory was 123.7MB in the beginning and 6.1GB in the end (delta: 5.9GB). Free memory was 66.5MB in the beginning and 2.2GB in the end (delta: -2.2GB). Peak memory consumption was 3.8GB. Max. memory is 16.1GB. * Witness Printer took 111.07ms. Allocated memory is still 6.1GB. Free memory was 2.2GB in the beginning and 2.2GB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.3s, 347 PlacesBefore, 76 PlacesAfterwards, 358 TransitionsBefore, 71 TransitionsAfterwards, 5712 CoEnabledTransitionPairs, 7 FixpointIterations, 247 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 42 TrivialYvCompositions, 15 ConcurrentYvCompositions, 16 ChoiceCompositions, 370 TotalNumberOfCompositions, 21098 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9200, independent: 8801, independent conditional: 0, independent unconditional: 8801, dependent: 399, dependent conditional: 0, dependent unconditional: 399, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2885, independent: 2812, independent conditional: 0, independent unconditional: 2812, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9200, independent: 5989, independent conditional: 0, independent unconditional: 5989, dependent: 326, dependent conditional: 0, dependent unconditional: 326, unknown: 2885, unknown conditional: 0, unknown unconditional: 2885] , Statistics on independence cache: Total cache size (in pairs): 496, Positive cache size: 458, Positive conditional cache size: 0, Positive unconditional cache size: 458, Negative cache size: 38, Negative conditional cache size: 0, Negative unconditional cache size: 38, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 68]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 68]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 116]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 116]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 122]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 122]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 134]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 134]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 140]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 140]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 432 locations, 60 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 79.5s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 49.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 19.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2554 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1867 mSDsluCounter, 934 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 710 mSDsCounter, 278 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5549 IncrementalHoareTripleChecker+Invalid, 5827 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 278 mSolverCounterUnsat, 224 mSDtfsCounter, 5549 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 308 GetRequests, 200 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=458occurred in iteration=18, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 451 NumberOfCodeBlocks, 441 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 474 ConstructedInterpolants, 0 QuantifiedInterpolants, 1536 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2944 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 32 InterpolantComputations, 16 PerfectInterpolantSequences, 92/124 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 32 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 23:10:05,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6b917f-d6b4-4508-b39b-02764a32072c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE