./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons3.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_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/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_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/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_7d985368-19b8-49b9-a43f-d2acb8249561/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 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:01:07,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:01:07,086 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:01:07,092 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:01:07,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:01:07,118 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:01:07,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:01:07,119 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:01:07,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:01:07,120 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:01:07,121 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:01:07,122 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:01:07,122 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:01:07,123 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:01:07,124 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:01:07,124 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:01:07,125 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:01:07,125 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:01:07,126 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:01:07,126 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:01:07,127 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:01:07,127 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:01:07,128 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:01:07,128 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:01:07,129 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:01:07,129 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:01:07,130 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:01:07,130 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:01:07,131 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:01:07,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:01:07,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:01:07,132 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:01:07,133 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:01:07,133 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:01:07,134 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:01:07,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:01:07,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:01:07,135 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:01:07,135 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:01:07,136 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:01:07,136 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:01:07,137 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_7d985368-19b8-49b9-a43f-d2acb8249561/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b [2023-11-06 22:01:07,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:01:07,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:01:07,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:01:07,473 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:01:07,474 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:01:07,475 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2023-11-06 22:01:10,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:01:10,852 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:01:10,853 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2023-11-06 22:01:10,868 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/data/88b9adb43/dcfd871c5ef048ce893ac16eb49d4935/FLAG71e463fc4 [2023-11-06 22:01:10,888 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/data/88b9adb43/dcfd871c5ef048ce893ac16eb49d4935 [2023-11-06 22:01:10,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:01:10,898 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:01:10,902 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:01:10,902 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:01:10,909 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:01:10,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:01:10" (1/1) ... [2023-11-06 22:01:10,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d0ef9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:10, skipping insertion in model container [2023-11-06 22:01:10,915 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:01:10" (1/1) ... [2023-11-06 22:01:10,964 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:01:11,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:01:11,270 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:01:11,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:01:11,340 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:01:11,341 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:01:11,349 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:01:11,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:11 WrapperNode [2023-11-06 22:01:11,350 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:01:11,352 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:01:11,352 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:01:11,353 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:01:11,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:11" (1/1) ... [2023-11-06 22:01:11,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:11" (1/1) ... [2023-11-06 22:01:11,410 INFO L138 Inliner]: procedures = 26, calls = 74, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 298 [2023-11-06 22:01:11,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:01:11,411 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:01:11,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:01:11,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:01:11,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:11" (1/1) ... [2023-11-06 22:01:11,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:11" (1/1) ... [2023-11-06 22:01:11,427 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:11" (1/1) ... [2023-11-06 22:01:11,427 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:11" (1/1) ... [2023-11-06 22:01:11,438 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:11" (1/1) ... [2023-11-06 22:01:11,443 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:11" (1/1) ... [2023-11-06 22:01:11,446 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:11" (1/1) ... [2023-11-06 22:01:11,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:11" (1/1) ... [2023-11-06 22:01:11,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:01:11,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:01:11,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:01:11,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:01:11,454 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:11" (1/1) ... [2023-11-06 22:01:11,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:01:11,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:11,487 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:01:11,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:01:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:01:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:01:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:01:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:01:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:01:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:01:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:01:11,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:01:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:01:11,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:01:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 22:01:11,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 22:01:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:01:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:01:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:01:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:01:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:01:11,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:01:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:01:11,541 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:01:11,710 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:01:11,713 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:01:12,225 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:01:12,478 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:01:12,478 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-06 22:01:12,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:12 BoogieIcfgContainer [2023-11-06 22:01:12,486 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:01:12,490 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:01:12,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:01:12,495 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:01:12,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:01:10" (1/3) ... [2023-11-06 22:01:12,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245b9864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:01:12, skipping insertion in model container [2023-11-06 22:01:12,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:11" (2/3) ... [2023-11-06 22:01:12,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245b9864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:01:12, skipping insertion in model container [2023-11-06 22:01:12,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:12" (3/3) ... [2023-11-06 22:01:12,501 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2023-11-06 22:01:12,511 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:01:12,525 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:01:12,525 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-06 22:01:12,525 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:01:12,646 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 22:01:12,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 275 transitions, 578 flow [2023-11-06 22:01:12,853 INFO L124 PetriNetUnfolderBase]: 18/271 cut-off events. [2023-11-06 22:01:12,853 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:01:12,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 271 events. 18/271 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 243 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 233. Up to 3 conditions per place. [2023-11-06 22:01:12,865 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 275 transitions, 578 flow [2023-11-06 22:01:12,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 245 transitions, 511 flow [2023-11-06 22:01:12,883 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:01:12,901 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 245 transitions, 511 flow [2023-11-06 22:01:12,905 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 245 transitions, 511 flow [2023-11-06 22:01:12,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 245 transitions, 511 flow [2023-11-06 22:01:12,986 INFO L124 PetriNetUnfolderBase]: 17/245 cut-off events. [2023-11-06 22:01:12,986 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:01:12,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 245 events. 17/245 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 241 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 233. Up to 3 conditions per place. [2023-11-06 22:01:12,995 INFO L119 LiptonReduction]: Number of co-enabled transitions 4446 [2023-11-06 22:01:25,527 INFO L134 LiptonReduction]: Checked pairs total: 13334 [2023-11-06 22:01:25,527 INFO L136 LiptonReduction]: Total number of compositions: 259 [2023-11-06 22:01:25,544 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:01:25,551 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;@47445494, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:01:25,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-11-06 22:01:25,555 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:01:25,556 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:01:25,556 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:01:25,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:25,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:01:25,557 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-06 22:01:25,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:25,563 INFO L85 PathProgramCache]: Analyzing trace with hash 37907, now seen corresponding path program 1 times [2023-11-06 22:01:25,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:25,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184942895] [2023-11-06 22:01:25,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:25,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:25,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:25,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184942895] [2023-11-06 22:01:25,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184942895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:25,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:25,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:01:25,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885198029] [2023-11-06 22:01:25,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:25,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:01:26,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:26,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:01:26,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:01:26,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 534 [2023-11-06 22:01:26,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:26,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:26,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 534 [2023-11-06 22:01:26,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:29,565 INFO L124 PetriNetUnfolderBase]: 17488/23714 cut-off events. [2023-11-06 22:01:29,566 INFO L125 PetriNetUnfolderBase]: For 1180/1180 co-relation queries the response was YES. [2023-11-06 22:01:29,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48356 conditions, 23714 events. 17488/23714 cut-off events. For 1180/1180 co-relation queries the response was YES. Maximal size of possible extension queue 1337. Compared 132840 event pairs, 15288 based on Foata normal form. 0/12318 useless extension candidates. Maximal degree in co-relation 44025. Up to 22941 conditions per place. [2023-11-06 22:01:29,799 INFO L140 encePairwiseOnDemand]: 521/534 looper letters, 48 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2023-11-06 22:01:29,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 239 flow [2023-11-06 22:01:29,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:01:29,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:01:29,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 733 transitions. [2023-11-06 22:01:29,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4575530586766542 [2023-11-06 22:01:29,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 733 transitions. [2023-11-06 22:01:29,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 733 transitions. [2023-11-06 22:01:29,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:29,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 733 transitions. [2023-11-06 22:01:29,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:29,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:29,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:29,856 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 133 flow. Second operand 3 states and 733 transitions. [2023-11-06 22:01:29,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 239 flow [2023-11-06 22:01:29,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 226 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-06 22:01:29,924 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 156 flow [2023-11-06 22:01:29,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-11-06 22:01:29,930 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -7 predicate places. [2023-11-06 22:01:29,931 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 156 flow [2023-11-06 22:01:29,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:29,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:29,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:01:29,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:01:29,932 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-06 22:01:29,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:29,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1176568, now seen corresponding path program 1 times [2023-11-06 22:01:29,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:29,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550388786] [2023-11-06 22:01:29,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:29,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:30,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:30,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:30,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550388786] [2023-11-06 22:01:30,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550388786] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:30,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422032777] [2023-11-06 22:01:30,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:30,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:30,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:30,121 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:30,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:01:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:30,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:01:30,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:30,319 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 22:01:30,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:01:30,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422032777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:30,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:01:30,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-06 22:01:30,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38277386] [2023-11-06 22:01:30,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:30,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:01:30,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:30,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:01:30,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:01:30,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 534 [2023-11-06 22:01:30,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 224.75) internal successors, (899), 4 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:30,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:30,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 534 [2023-11-06 22:01:30,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:33,575 INFO L124 PetriNetUnfolderBase]: 17488/23712 cut-off events. [2023-11-06 22:01:33,576 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2023-11-06 22:01:33,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47990 conditions, 23712 events. 17488/23712 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 1337. Compared 132788 event pairs, 15288 based on Foata normal form. 0/12320 useless extension candidates. Maximal degree in co-relation 47948. Up to 22933 conditions per place. [2023-11-06 22:01:33,747 INFO L140 encePairwiseOnDemand]: 527/534 looper letters, 45 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2023-11-06 22:01:33,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 250 flow [2023-11-06 22:01:33,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:01:33,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:01:33,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 949 transitions. [2023-11-06 22:01:33,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4442883895131086 [2023-11-06 22:01:33,759 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 949 transitions. [2023-11-06 22:01:33,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 949 transitions. [2023-11-06 22:01:33,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:33,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 949 transitions. [2023-11-06 22:01:33,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 237.25) internal successors, (949), 4 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:33,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 534.0) internal successors, (2670), 5 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:33,774 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 534.0) internal successors, (2670), 5 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:33,774 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 156 flow. Second operand 4 states and 949 transitions. [2023-11-06 22:01:33,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 250 flow [2023-11-06 22:01:33,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 240 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:01:33,779 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 150 flow [2023-11-06 22:01:33,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2023-11-06 22:01:33,781 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -8 predicate places. [2023-11-06 22:01:33,781 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 150 flow [2023-11-06 22:01:33,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 224.75) internal successors, (899), 4 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:33,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:33,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:01:33,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:34,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:34,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-06 22:01:34,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:34,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1176569, now seen corresponding path program 1 times [2023-11-06 22:01:34,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:34,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862670925] [2023-11-06 22:01:34,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:34,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:34,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:34,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:34,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862670925] [2023-11-06 22:01:34,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862670925] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:34,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444647141] [2023-11-06 22:01:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:34,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:34,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:34,217 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:34,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:01:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:34,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:01:34,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:34,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:34,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:01:34,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:34,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444647141] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:01:34,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:01:34,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:01:34,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204986258] [2023-11-06 22:01:34,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:01:34,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:01:34,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:34,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:01:34,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:01:34,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 534 [2023-11-06 22:01:34,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:34,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:34,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 534 [2023-11-06 22:01:34,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:37,370 INFO L124 PetriNetUnfolderBase]: 17494/23724 cut-off events. [2023-11-06 22:01:37,371 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2023-11-06 22:01:37,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48033 conditions, 23724 events. 17494/23724 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 1423. Compared 133149 event pairs, 15288 based on Foata normal form. 0/12333 useless extension candidates. Maximal degree in co-relation 47948. Up to 22942 conditions per place. [2023-11-06 22:01:37,534 INFO L140 encePairwiseOnDemand]: 527/534 looper letters, 46 selfloop transitions, 17 changer transitions 0/66 dead transitions. [2023-11-06 22:01:37,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 336 flow [2023-11-06 22:01:37,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:01:37,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:01:37,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1413 transitions. [2023-11-06 22:01:37,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4410112359550562 [2023-11-06 22:01:37,541 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1413 transitions. [2023-11-06 22:01:37,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1413 transitions. [2023-11-06 22:01:37,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:37,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1413 transitions. [2023-11-06 22:01:37,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 235.5) internal successors, (1413), 6 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:37,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 534.0) internal successors, (3738), 7 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:37,561 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 534.0) internal successors, (3738), 7 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:37,561 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 150 flow. Second operand 6 states and 1413 transitions. [2023-11-06 22:01:37,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 336 flow [2023-11-06 22:01:37,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:01:37,566 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 266 flow [2023-11-06 22:01:37,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=266, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2023-11-06 22:01:37,569 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2023-11-06 22:01:37,569 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 266 flow [2023-11-06 22:01:37,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:37,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:37,571 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:01:37,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:37,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:37,781 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-06 22:01:37,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:37,782 INFO L85 PathProgramCache]: Analyzing trace with hash 692839764, now seen corresponding path program 2 times [2023-11-06 22:01:37,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:37,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838753575] [2023-11-06 22:01:37,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:37,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:37,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:37,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838753575] [2023-11-06 22:01:37,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838753575] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:37,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511361616] [2023-11-06 22:01:37,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:01:37,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:37,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:37,988 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:38,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:01:38,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:01:38,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:01:38,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:01:38,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:38,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:01:38,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:01:38,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511361616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:38,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:01:38,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:01:38,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475462649] [2023-11-06 22:01:38,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:38,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:01:38,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:38,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:01:38,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:01:38,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 534 [2023-11-06 22:01:38,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:38,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:38,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 534 [2023-11-06 22:01:38,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:40,183 INFO L124 PetriNetUnfolderBase]: 17494/23723 cut-off events. [2023-11-06 22:01:40,184 INFO L125 PetriNetUnfolderBase]: For 179/179 co-relation queries the response was YES. [2023-11-06 22:01:40,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48058 conditions, 23723 events. 17494/23723 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 1423. Compared 133079 event pairs, 15288 based on Foata normal form. 1/12336 useless extension candidates. Maximal degree in co-relation 47999. Up to 22947 conditions per place. [2023-11-06 22:01:40,344 INFO L140 encePairwiseOnDemand]: 531/534 looper letters, 56 selfloop transitions, 6 changer transitions 0/65 dead transitions. [2023-11-06 22:01:40,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 65 transitions, 380 flow [2023-11-06 22:01:40,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:01:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:01:40,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 731 transitions. [2023-11-06 22:01:40,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45630461922596754 [2023-11-06 22:01:40,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 731 transitions. [2023-11-06 22:01:40,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 731 transitions. [2023-11-06 22:01:40,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:40,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 731 transitions. [2023-11-06 22:01:40,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:40,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:40,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:40,361 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 266 flow. Second operand 3 states and 731 transitions. [2023-11-06 22:01:40,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 65 transitions, 380 flow [2023-11-06 22:01:40,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 65 transitions, 354 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 22:01:40,365 INFO L231 Difference]: Finished difference. Result has 62 places, 65 transitions, 242 flow [2023-11-06 22:01:40,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=62, PETRI_TRANSITIONS=65} [2023-11-06 22:01:40,367 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2023-11-06 22:01:40,367 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 65 transitions, 242 flow [2023-11-06 22:01:40,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:40,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:40,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:40,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 22:01:40,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:40,854 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-06 22:01:40,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:40,855 INFO L85 PathProgramCache]: Analyzing trace with hash 768122166, now seen corresponding path program 1 times [2023-11-06 22:01:40,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:40,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568742789] [2023-11-06 22:01:40,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:40,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:40,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:40,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:40,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568742789] [2023-11-06 22:01:40,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568742789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:40,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:40,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:01:40,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518376342] [2023-11-06 22:01:40,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:40,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:01:40,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:40,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:01:40,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:01:40,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 534 [2023-11-06 22:01:40,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 65 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:40,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:40,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 534 [2023-11-06 22:01:40,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:43,137 INFO L124 PetriNetUnfolderBase]: 14478/19671 cut-off events. [2023-11-06 22:01:43,138 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2023-11-06 22:01:43,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40200 conditions, 19671 events. 14478/19671 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 108598 event pairs, 6921 based on Foata normal form. 0/10729 useless extension candidates. Maximal degree in co-relation 40145. Up to 10684 conditions per place. [2023-11-06 22:01:43,254 INFO L140 encePairwiseOnDemand]: 531/534 looper letters, 87 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2023-11-06 22:01:43,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 91 transitions, 476 flow [2023-11-06 22:01:43,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:01:43,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:01:43,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 761 transitions. [2023-11-06 22:01:43,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47503121098626716 [2023-11-06 22:01:43,263 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 761 transitions. [2023-11-06 22:01:43,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 761 transitions. [2023-11-06 22:01:43,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:43,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 761 transitions. [2023-11-06 22:01:43,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:43,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:43,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:43,275 INFO L175 Difference]: Start difference. First operand has 62 places, 65 transitions, 242 flow. Second operand 3 states and 761 transitions. [2023-11-06 22:01:43,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 91 transitions, 476 flow [2023-11-06 22:01:43,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 91 transitions, 464 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:01:43,282 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 232 flow [2023-11-06 22:01:43,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2023-11-06 22:01:43,286 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -3 predicate places. [2023-11-06 22:01:43,286 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 232 flow [2023-11-06 22:01:43,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:43,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:43,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:43,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:01:43,288 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-06 22:01:43,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:43,288 INFO L85 PathProgramCache]: Analyzing trace with hash 768122057, now seen corresponding path program 1 times [2023-11-06 22:01:43,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:43,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265224617] [2023-11-06 22:01:43,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:43,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:43,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:43,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:43,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265224617] [2023-11-06 22:01:43,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265224617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:43,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:43,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:01:43,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727179302] [2023-11-06 22:01:43,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:43,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:01:43,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:43,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:01:43,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:01:43,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 534 [2023-11-06 22:01:43,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 221.5) internal successors, (886), 4 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:43,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:43,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 534 [2023-11-06 22:01:43,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:45,834 INFO L124 PetriNetUnfolderBase]: 17103/23396 cut-off events. [2023-11-06 22:01:45,834 INFO L125 PetriNetUnfolderBase]: For 2814/2814 co-relation queries the response was YES. [2023-11-06 22:01:45,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49787 conditions, 23396 events. 17103/23396 cut-off events. For 2814/2814 co-relation queries the response was YES. Maximal size of possible extension queue 1230. Compared 133880 event pairs, 14965 based on Foata normal form. 400/15714 useless extension candidates. Maximal degree in co-relation 49708. Up to 20065 conditions per place. [2023-11-06 22:01:45,972 INFO L140 encePairwiseOnDemand]: 526/534 looper letters, 96 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2023-11-06 22:01:45,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 102 transitions, 564 flow [2023-11-06 22:01:45,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:01:45,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:01:45,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 962 transitions. [2023-11-06 22:01:45,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.450374531835206 [2023-11-06 22:01:45,979 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 962 transitions. [2023-11-06 22:01:45,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 962 transitions. [2023-11-06 22:01:45,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:45,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 962 transitions. [2023-11-06 22:01:45,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 240.5) internal successors, (962), 4 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:45,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 534.0) internal successors, (2670), 5 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:45,993 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 534.0) internal successors, (2670), 5 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:45,993 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 232 flow. Second operand 4 states and 962 transitions. [2023-11-06 22:01:45,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 102 transitions, 564 flow [2023-11-06 22:01:45,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 102 transitions, 558 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:01:45,999 INFO L231 Difference]: Finished difference. Result has 63 places, 64 transitions, 245 flow [2023-11-06 22:01:45,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=245, PETRI_PLACES=63, PETRI_TRANSITIONS=64} [2023-11-06 22:01:46,003 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -1 predicate places. [2023-11-06 22:01:46,003 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 64 transitions, 245 flow [2023-11-06 22:01:46,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 221.5) internal successors, (886), 4 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:46,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:46,004 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-06 22:01:46,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:01:46,005 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-06 22:01:46,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:46,005 INFO L85 PathProgramCache]: Analyzing trace with hash 746601244, now seen corresponding path program 1 times [2023-11-06 22:01:46,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:46,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398839448] [2023-11-06 22:01:46,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:46,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:46,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:46,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398839448] [2023-11-06 22:01:46,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398839448] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:46,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818032037] [2023-11-06 22:01:46,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:46,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:46,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:46,129 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:46,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:01:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:46,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:01:46,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:46,273 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:46,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:01:46,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:46,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818032037] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:01:46,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:01:46,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:01:46,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631597101] [2023-11-06 22:01:46,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:01:46,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:01:46,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:46,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:01:46,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:01:46,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 534 [2023-11-06 22:01:46,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 64 transitions, 245 flow. Second operand has 13 states, 13 states have (on average 225.15384615384616) internal successors, (2927), 13 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:46,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:46,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 534 [2023-11-06 22:01:46,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:49,144 INFO L124 PetriNetUnfolderBase]: 17121/23432 cut-off events. [2023-11-06 22:01:49,144 INFO L125 PetriNetUnfolderBase]: For 1427/1427 co-relation queries the response was YES. [2023-11-06 22:01:49,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50618 conditions, 23432 events. 17121/23432 cut-off events. For 1427/1427 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 134635 event pairs, 14965 based on Foata normal form. 12/13423 useless extension candidates. Maximal degree in co-relation 50400. Up to 22642 conditions per place. [2023-11-06 22:01:49,266 INFO L140 encePairwiseOnDemand]: 528/534 looper letters, 44 selfloop transitions, 41 changer transitions 0/88 dead transitions. [2023-11-06 22:01:49,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 88 transitions, 565 flow [2023-11-06 22:01:49,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:01:49,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:01:49,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2779 transitions. [2023-11-06 22:01:49,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43367665418227214 [2023-11-06 22:01:49,278 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2779 transitions. [2023-11-06 22:01:49,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2779 transitions. [2023-11-06 22:01:49,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:49,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2779 transitions. [2023-11-06 22:01:49,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 231.58333333333334) internal successors, (2779), 12 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:49,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 534.0) internal successors, (6942), 13 states have internal predecessors, (6942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:49,305 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 534.0) internal successors, (6942), 13 states have internal predecessors, (6942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:49,305 INFO L175 Difference]: Start difference. First operand has 63 places, 64 transitions, 245 flow. Second operand 12 states and 2779 transitions. [2023-11-06 22:01:49,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 88 transitions, 565 flow [2023-11-06 22:01:49,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 88 transitions, 559 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:01:49,310 INFO L231 Difference]: Finished difference. Result has 79 places, 88 transitions, 525 flow [2023-11-06 22:01:49,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=525, PETRI_PLACES=79, PETRI_TRANSITIONS=88} [2023-11-06 22:01:49,311 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 15 predicate places. [2023-11-06 22:01:49,311 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 88 transitions, 525 flow [2023-11-06 22:01:49,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 225.15384615384616) internal successors, (2927), 13 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:49,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:49,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:49,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:49,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:01:49,521 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-06 22:01:49,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:49,521 INFO L85 PathProgramCache]: Analyzing trace with hash 864052228, now seen corresponding path program 1 times [2023-11-06 22:01:49,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:49,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495851578] [2023-11-06 22:01:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:49,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:49,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:49,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:49,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495851578] [2023-11-06 22:01:49,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495851578] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:49,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968167128] [2023-11-06 22:01:49,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:49,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:49,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:49,671 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:49,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:01:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:49,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:01:49,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:49,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:01:49,808 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:01:49,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968167128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:49,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:01:49,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-11-06 22:01:49,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286756161] [2023-11-06 22:01:49,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:49,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:01:49,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:49,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:01:49,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:01:49,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 534 [2023-11-06 22:01:49,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 88 transitions, 525 flow. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:49,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:49,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 534 [2023-11-06 22:01:49,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:51,786 INFO L124 PetriNetUnfolderBase]: 13747/18630 cut-off events. [2023-11-06 22:01:51,786 INFO L125 PetriNetUnfolderBase]: For 1301/1301 co-relation queries the response was YES. [2023-11-06 22:01:51,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39858 conditions, 18630 events. 13747/18630 cut-off events. For 1301/1301 co-relation queries the response was YES. Maximal size of possible extension queue 966. Compared 101316 event pairs, 11837 based on Foata normal form. 0/11117 useless extension candidates. Maximal degree in co-relation 39737. Up to 18248 conditions per place. [2023-11-06 22:01:51,905 INFO L140 encePairwiseOnDemand]: 531/534 looper letters, 82 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2023-11-06 22:01:51,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 86 transitions, 683 flow [2023-11-06 22:01:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:01:51,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:01:51,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 741 transitions. [2023-11-06 22:01:51,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46254681647940077 [2023-11-06 22:01:51,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 741 transitions. [2023-11-06 22:01:51,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 741 transitions. [2023-11-06 22:01:51,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:51,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 741 transitions. [2023-11-06 22:01:51,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:51,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:51,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:51,920 INFO L175 Difference]: Start difference. First operand has 79 places, 88 transitions, 525 flow. Second operand 3 states and 741 transitions. [2023-11-06 22:01:51,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 86 transitions, 683 flow [2023-11-06 22:01:51,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 86 transitions, 559 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-11-06 22:01:51,927 INFO L231 Difference]: Finished difference. Result has 74 places, 86 transitions, 395 flow [2023-11-06 22:01:51,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=395, PETRI_PLACES=74, PETRI_TRANSITIONS=86} [2023-11-06 22:01:51,929 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 10 predicate places. [2023-11-06 22:01:51,929 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 86 transitions, 395 flow [2023-11-06 22:01:51,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:51,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:51,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:51,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:52,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:52,140 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-06 22:01:52,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:52,140 INFO L85 PathProgramCache]: Analyzing trace with hash 864052365, now seen corresponding path program 1 times [2023-11-06 22:01:52,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:52,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940997619] [2023-11-06 22:01:52,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:52,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:01:52,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:52,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940997619] [2023-11-06 22:01:52,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940997619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:52,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:52,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:01:52,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635188220] [2023-11-06 22:01:52,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:52,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:01:52,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:52,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:01:52,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:01:52,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 534 [2023-11-06 22:01:52,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 86 transitions, 395 flow. Second operand has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:52,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:52,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 534 [2023-11-06 22:01:52,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:54,052 INFO L124 PetriNetUnfolderBase]: 11550/15767 cut-off events. [2023-11-06 22:01:54,052 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES. [2023-11-06 22:01:54,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33494 conditions, 15767 events. 11550/15767 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 83135 event pairs, 5626 based on Foata normal form. 0/10245 useless extension candidates. Maximal degree in co-relation 33474. Up to 8331 conditions per place. [2023-11-06 22:01:54,145 INFO L140 encePairwiseOnDemand]: 529/534 looper letters, 106 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-11-06 22:01:54,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 110 transitions, 665 flow [2023-11-06 22:01:54,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:01:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:01:54,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 980 transitions. [2023-11-06 22:01:54,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45880149812734083 [2023-11-06 22:01:54,150 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 980 transitions. [2023-11-06 22:01:54,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 980 transitions. [2023-11-06 22:01:54,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:54,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 980 transitions. [2023-11-06 22:01:54,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:54,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 534.0) internal successors, (2670), 5 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:54,333 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 534.0) internal successors, (2670), 5 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:54,333 INFO L175 Difference]: Start difference. First operand has 74 places, 86 transitions, 395 flow. Second operand 4 states and 980 transitions. [2023-11-06 22:01:54,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 110 transitions, 665 flow [2023-11-06 22:01:54,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 110 transitions, 664 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:01:54,346 INFO L231 Difference]: Finished difference. Result has 74 places, 84 transitions, 394 flow [2023-11-06 22:01:54,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=394, PETRI_PLACES=74, PETRI_TRANSITIONS=84} [2023-11-06 22:01:54,348 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 10 predicate places. [2023-11-06 22:01:54,348 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 84 transitions, 394 flow [2023-11-06 22:01:54,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:54,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:54,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:54,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:01:54,352 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-06 22:01:54,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:54,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1456281494, now seen corresponding path program 1 times [2023-11-06 22:01:54,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:54,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051269546] [2023-11-06 22:01:54,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:54,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:54,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:54,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051269546] [2023-11-06 22:01:54,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051269546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:54,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:54,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:01:54,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122573722] [2023-11-06 22:01:54,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:54,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:01:54,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:54,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:01:54,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:01:54,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 534 [2023-11-06 22:01:54,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 84 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:54,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:54,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 534 [2023-11-06 22:01:54,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:55,667 INFO L124 PetriNetUnfolderBase]: 8998/12141 cut-off events. [2023-11-06 22:01:55,668 INFO L125 PetriNetUnfolderBase]: For 2291/2291 co-relation queries the response was YES. [2023-11-06 22:01:55,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27167 conditions, 12141 events. 8998/12141 cut-off events. For 2291/2291 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 60377 event pairs, 2723 based on Foata normal form. 0/9493 useless extension candidates. Maximal degree in co-relation 27146. Up to 8693 conditions per place. [2023-11-06 22:01:55,741 INFO L140 encePairwiseOnDemand]: 526/534 looper letters, 102 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2023-11-06 22:01:55,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 109 transitions, 668 flow [2023-11-06 22:01:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:01:55,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:01:55,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 760 transitions. [2023-11-06 22:01:55,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47440699126092384 [2023-11-06 22:01:55,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 760 transitions. [2023-11-06 22:01:55,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 760 transitions. [2023-11-06 22:01:55,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:55,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 760 transitions. [2023-11-06 22:01:55,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:55,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:55,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:55,754 INFO L175 Difference]: Start difference. First operand has 74 places, 84 transitions, 394 flow. Second operand 3 states and 760 transitions. [2023-11-06 22:01:55,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 109 transitions, 668 flow [2023-11-06 22:01:55,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 109 transitions, 660 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:01:55,765 INFO L231 Difference]: Finished difference. Result has 74 places, 87 transitions, 420 flow [2023-11-06 22:01:55,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=420, PETRI_PLACES=74, PETRI_TRANSITIONS=87} [2023-11-06 22:01:55,766 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 10 predicate places. [2023-11-06 22:01:55,767 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 87 transitions, 420 flow [2023-11-06 22:01:55,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:55,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:55,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:55,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:01:55,768 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-06 22:01:55,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:55,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1670348658, now seen corresponding path program 1 times [2023-11-06 22:01:55,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:55,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161141147] [2023-11-06 22:01:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:55,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:01:55,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:55,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161141147] [2023-11-06 22:01:55,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161141147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:55,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:55,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:01:55,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155886221] [2023-11-06 22:01:55,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:55,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:01:55,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:55,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:01:55,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:01:55,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 534 [2023-11-06 22:01:55,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 87 transitions, 420 flow. Second operand has 3 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:55,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:55,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 534 [2023-11-06 22:01:55,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:56,984 INFO L124 PetriNetUnfolderBase]: 7148/9917 cut-off events. [2023-11-06 22:01:56,984 INFO L125 PetriNetUnfolderBase]: For 1275/1275 co-relation queries the response was YES. [2023-11-06 22:01:57,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23207 conditions, 9917 events. 7148/9917 cut-off events. For 1275/1275 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 46866 event pairs, 2946 based on Foata normal form. 72/7649 useless extension candidates. Maximal degree in co-relation 23185. Up to 8267 conditions per place. [2023-11-06 22:01:57,052 INFO L140 encePairwiseOnDemand]: 531/534 looper letters, 103 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2023-11-06 22:01:57,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 108 transitions, 681 flow [2023-11-06 22:01:57,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:01:57,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:01:57,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 753 transitions. [2023-11-06 22:01:57,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700374531835206 [2023-11-06 22:01:57,057 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 753 transitions. [2023-11-06 22:01:57,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 753 transitions. [2023-11-06 22:01:57,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:57,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 753 transitions. [2023-11-06 22:01:57,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:57,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:57,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:57,067 INFO L175 Difference]: Start difference. First operand has 74 places, 87 transitions, 420 flow. Second operand 3 states and 753 transitions. [2023-11-06 22:01:57,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 108 transitions, 681 flow [2023-11-06 22:01:57,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 108 transitions, 677 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:01:57,078 INFO L231 Difference]: Finished difference. Result has 76 places, 88 transitions, 430 flow [2023-11-06 22:01:57,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=76, PETRI_TRANSITIONS=88} [2023-11-06 22:01:57,080 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2023-11-06 22:01:57,080 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 88 transitions, 430 flow [2023-11-06 22:01:57,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:57,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:57,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:57,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:01:57,082 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-06 22:01:57,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:57,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2100047875, now seen corresponding path program 1 times [2023-11-06 22:01:57,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:57,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820058661] [2023-11-06 22:01:57,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:57,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:57,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:57,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820058661] [2023-11-06 22:01:57,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820058661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:57,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:57,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:01:57,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760192133] [2023-11-06 22:01:57,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:57,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:01:57,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:57,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:01:57,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:01:57,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 534 [2023-11-06 22:01:57,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 88 transitions, 430 flow. Second operand has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:57,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:57,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 534 [2023-11-06 22:01:57,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:58,421 INFO L124 PetriNetUnfolderBase]: 7168/9883 cut-off events. [2023-11-06 22:01:58,421 INFO L125 PetriNetUnfolderBase]: For 2917/2917 co-relation queries the response was YES. [2023-11-06 22:01:58,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23929 conditions, 9883 events. 7168/9883 cut-off events. For 2917/2917 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 46042 event pairs, 5798 based on Foata normal form. 0/7543 useless extension candidates. Maximal degree in co-relation 23905. Up to 9634 conditions per place. [2023-11-06 22:01:58,476 INFO L140 encePairwiseOnDemand]: 532/534 looper letters, 72 selfloop transitions, 11 changer transitions 2/87 dead transitions. [2023-11-06 22:01:58,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 87 transitions, 598 flow [2023-11-06 22:01:58,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:01:58,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:01:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2023-11-06 22:01:58,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45880149812734083 [2023-11-06 22:01:58,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2023-11-06 22:01:58,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2023-11-06 22:01:58,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:58,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2023-11-06 22:01:58,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:58,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:58,488 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:58,488 INFO L175 Difference]: Start difference. First operand has 76 places, 88 transitions, 430 flow. Second operand 3 states and 735 transitions. [2023-11-06 22:01:58,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 87 transitions, 598 flow [2023-11-06 22:01:58,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 87 transitions, 592 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:01:58,499 INFO L231 Difference]: Finished difference. Result has 76 places, 85 transitions, 439 flow [2023-11-06 22:01:58,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=439, PETRI_PLACES=76, PETRI_TRANSITIONS=85} [2023-11-06 22:01:58,500 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2023-11-06 22:01:58,500 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 85 transitions, 439 flow [2023-11-06 22:01:58,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:58,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:58,501 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-11-06 22:01:58,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:01:58,501 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-06 22:01:58,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:58,502 INFO L85 PathProgramCache]: Analyzing trace with hash -687218404, now seen corresponding path program 2 times [2023-11-06 22:01:58,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:58,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377990907] [2023-11-06 22:01:58,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:58,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:58,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:58,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377990907] [2023-11-06 22:01:58,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377990907] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:01:58,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500869891] [2023-11-06 22:01:58,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:01:58,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:58,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:58,737 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:01:58,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:01:58,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:01:58,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:01:58,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:01:58,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:58,908 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:01:58,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:01:58,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500869891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:58,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:01:58,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-11-06 22:01:58,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102880965] [2023-11-06 22:01:58,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:58,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:01:58,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:58,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:01:58,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:01:58,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 534 [2023-11-06 22:01:58,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 85 transitions, 439 flow. Second operand has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:58,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:58,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 534 [2023-11-06 22:01:58,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:59,688 INFO L124 PetriNetUnfolderBase]: 5936/8199 cut-off events. [2023-11-06 22:01:59,688 INFO L125 PetriNetUnfolderBase]: For 1207/1207 co-relation queries the response was YES. [2023-11-06 22:01:59,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19083 conditions, 8199 events. 5936/8199 cut-off events. For 1207/1207 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 37160 event pairs, 4772 based on Foata normal form. 2/6545 useless extension candidates. Maximal degree in co-relation 19059. Up to 7974 conditions per place. [2023-11-06 22:01:59,736 INFO L140 encePairwiseOnDemand]: 529/534 looper letters, 67 selfloop transitions, 12 changer transitions 1/82 dead transitions. [2023-11-06 22:01:59,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 82 transitions, 571 flow [2023-11-06 22:01:59,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:01:59,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:01:59,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 943 transitions. [2023-11-06 22:01:59,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44147940074906367 [2023-11-06 22:01:59,741 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 943 transitions. [2023-11-06 22:01:59,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 943 transitions. [2023-11-06 22:01:59,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:59,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 943 transitions. [2023-11-06 22:01:59,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 235.75) internal successors, (943), 4 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:59,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 534.0) internal successors, (2670), 5 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:59,751 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 534.0) internal successors, (2670), 5 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:59,751 INFO L175 Difference]: Start difference. First operand has 76 places, 85 transitions, 439 flow. Second operand 4 states and 943 transitions. [2023-11-06 22:01:59,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 82 transitions, 571 flow [2023-11-06 22:01:59,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 82 transitions, 486 flow, removed 3 selfloop flow, removed 11 redundant places. [2023-11-06 22:01:59,760 INFO L231 Difference]: Finished difference. Result has 63 places, 81 transitions, 345 flow [2023-11-06 22:01:59,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=63, PETRI_TRANSITIONS=81} [2023-11-06 22:01:59,761 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -1 predicate places. [2023-11-06 22:01:59,762 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 81 transitions, 345 flow [2023-11-06 22:01:59,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:59,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:59,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:59,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:59,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:59,972 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-06 22:01:59,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:59,973 INFO L85 PathProgramCache]: Analyzing trace with hash -659238181, now seen corresponding path program 1 times [2023-11-06 22:01:59,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:59,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636981429] [2023-11-06 22:01:59,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:59,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:00,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:00,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:00,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636981429] [2023-11-06 22:02:00,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636981429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:00,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:00,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:02:00,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447780347] [2023-11-06 22:02:00,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:00,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:02:00,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:00,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:02:00,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:02:00,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 534 [2023-11-06 22:02:00,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 81 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:00,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:00,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 534 [2023-11-06 22:02:00,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:01,156 INFO L124 PetriNetUnfolderBase]: 6660/9218 cut-off events. [2023-11-06 22:02:01,157 INFO L125 PetriNetUnfolderBase]: For 1533/1533 co-relation queries the response was YES. [2023-11-06 22:02:01,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21391 conditions, 9218 events. 6660/9218 cut-off events. For 1533/1533 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 42873 event pairs, 5428 based on Foata normal form. 144/7625 useless extension candidates. Maximal degree in co-relation 21376. Up to 7319 conditions per place. [2023-11-06 22:02:01,191 INFO L140 encePairwiseOnDemand]: 526/534 looper letters, 67 selfloop transitions, 11 changer transitions 23/103 dead transitions. [2023-11-06 22:02:01,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 606 flow [2023-11-06 22:02:01,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:02:01,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:02:01,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 944 transitions. [2023-11-06 22:02:01,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419475655430712 [2023-11-06 22:02:01,196 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 944 transitions. [2023-11-06 22:02:01,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 944 transitions. [2023-11-06 22:02:01,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:01,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 944 transitions. [2023-11-06 22:02:01,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:01,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 534.0) internal successors, (2670), 5 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:01,205 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 534.0) internal successors, (2670), 5 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:01,205 INFO L175 Difference]: Start difference. First operand has 63 places, 81 transitions, 345 flow. Second operand 4 states and 944 transitions. [2023-11-06 22:02:01,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 103 transitions, 606 flow [2023-11-06 22:02:01,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 103 transitions, 589 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-06 22:02:01,210 INFO L231 Difference]: Finished difference. Result has 63 places, 80 transitions, 356 flow [2023-11-06 22:02:01,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=356, PETRI_PLACES=63, PETRI_TRANSITIONS=80} [2023-11-06 22:02:01,211 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -1 predicate places. [2023-11-06 22:02:01,211 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 80 transitions, 356 flow [2023-11-06 22:02:01,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:01,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:01,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:01,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:02:01,212 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-06 22:02:01,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:01,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1231454878, now seen corresponding path program 1 times [2023-11-06 22:02:01,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:01,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405125192] [2023-11-06 22:02:01,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:01,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:02:01,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:01,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405125192] [2023-11-06 22:02:01,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405125192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:01,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:01,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:02:01,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341540354] [2023-11-06 22:02:01,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:01,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:02:01,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:01,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:02:01,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:02:01,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 534 [2023-11-06 22:02:01,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 80 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:01,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:01,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 534 [2023-11-06 22:02:01,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:02,015 INFO L124 PetriNetUnfolderBase]: 6001/8337 cut-off events. [2023-11-06 22:02:02,015 INFO L125 PetriNetUnfolderBase]: For 1126/1126 co-relation queries the response was YES. [2023-11-06 22:02:02,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20121 conditions, 8337 events. 6001/8337 cut-off events. For 1126/1126 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 39834 event pairs, 2025 based on Foata normal form. 0/6640 useless extension candidates. Maximal degree in co-relation 20107. Up to 5011 conditions per place. [2023-11-06 22:02:02,057 INFO L140 encePairwiseOnDemand]: 531/534 looper letters, 96 selfloop transitions, 2 changer transitions 3/103 dead transitions. [2023-11-06 22:02:02,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 103 transitions, 619 flow [2023-11-06 22:02:02,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:02:02,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:02:02,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 762 transitions. [2023-11-06 22:02:02,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756554307116105 [2023-11-06 22:02:02,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 762 transitions. [2023-11-06 22:02:02,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 762 transitions. [2023-11-06 22:02:02,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:02,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 762 transitions. [2023-11-06 22:02:02,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:02,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:02,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 534.0) internal successors, (2136), 4 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:02,068 INFO L175 Difference]: Start difference. First operand has 63 places, 80 transitions, 356 flow. Second operand 3 states and 762 transitions. [2023-11-06 22:02:02,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 103 transitions, 619 flow [2023-11-06 22:02:02,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 103 transitions, 581 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-06 22:02:02,077 INFO L231 Difference]: Finished difference. Result has 62 places, 80 transitions, 326 flow [2023-11-06 22:02:02,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=59, 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=326, PETRI_PLACES=62, PETRI_TRANSITIONS=80} [2023-11-06 22:02:02,078 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2023-11-06 22:02:02,078 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 80 transitions, 326 flow [2023-11-06 22:02:02,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:02,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:02,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:02,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:02:02,079 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-06 22:02:02,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:02,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1237912799, now seen corresponding path program 1 times [2023-11-06 22:02:02,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:02,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399247575] [2023-11-06 22:02:02,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:02,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:02,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:02,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399247575] [2023-11-06 22:02:02,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399247575] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:02,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733683927] [2023-11-06 22:02:02,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:02,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:02,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:02,761 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:02,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:02:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:02,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:02:02,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:03,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:02:03,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:02:03,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733683927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:03,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:02:03,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2023-11-06 22:02:03,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315389652] [2023-11-06 22:02:03,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:03,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:02:03,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:03,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:02:03,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:02:03,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 534 [2023-11-06 22:02:03,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 80 transitions, 326 flow. Second operand has 5 states, 5 states have (on average 222.6) internal successors, (1113), 5 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:03,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:03,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 534 [2023-11-06 22:02:03,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:04,472 INFO L124 PetriNetUnfolderBase]: 8382/11601 cut-off events. [2023-11-06 22:02:04,472 INFO L125 PetriNetUnfolderBase]: For 1752/1752 co-relation queries the response was YES. [2023-11-06 22:02:04,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27717 conditions, 11601 events. 8382/11601 cut-off events. For 1752/1752 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 57988 event pairs, 1722 based on Foata normal form. 0/9531 useless extension candidates. Maximal degree in co-relation 27703. Up to 7714 conditions per place. [2023-11-06 22:02:04,535 INFO L140 encePairwiseOnDemand]: 526/534 looper letters, 123 selfloop transitions, 7 changer transitions 9/141 dead transitions. [2023-11-06 22:02:04,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 141 transitions, 762 flow [2023-11-06 22:02:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:02:04,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:02:04,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1200 transitions. [2023-11-06 22:02:04,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449438202247191 [2023-11-06 22:02:04,540 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1200 transitions. [2023-11-06 22:02:04,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1200 transitions. [2023-11-06 22:02:04,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:04,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1200 transitions. [2023-11-06 22:02:04,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 240.0) internal successors, (1200), 5 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:04,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 534.0) internal successors, (3204), 6 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:04,551 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 534.0) internal successors, (3204), 6 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:04,551 INFO L175 Difference]: Start difference. First operand has 62 places, 80 transitions, 326 flow. Second operand 5 states and 1200 transitions. [2023-11-06 22:02:04,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 141 transitions, 762 flow [2023-11-06 22:02:04,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 141 transitions, 759 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:02:04,557 INFO L231 Difference]: Finished difference. Result has 67 places, 85 transitions, 371 flow [2023-11-06 22:02:04,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=371, PETRI_PLACES=67, PETRI_TRANSITIONS=85} [2023-11-06 22:02:04,558 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2023-11-06 22:02:04,558 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 85 transitions, 371 flow [2023-11-06 22:02:04,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.6) internal successors, (1113), 5 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:04,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:04,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:04,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-06 22:02:04,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:02:04,769 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-06 22:02:04,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:04,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1237912909, now seen corresponding path program 1 times [2023-11-06 22:02:04,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:04,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953390654] [2023-11-06 22:02:04,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:04,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:05,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:05,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:05,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953390654] [2023-11-06 22:02:05,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953390654] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:05,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756758616] [2023-11-06 22:02:05,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:05,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:05,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:05,351 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:05,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:02:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:05,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:02:05,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:02:05,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:02:05,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756758616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:05,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:02:05,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2023-11-06 22:02:05,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647640321] [2023-11-06 22:02:05,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:05,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:02:05,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:05,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:02:05,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:02:05,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 534 [2023-11-06 22:02:05,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 85 transitions, 371 flow. Second operand has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:05,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:05,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 534 [2023-11-06 22:02:05,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:07,074 INFO L124 PetriNetUnfolderBase]: 8222/11369 cut-off events. [2023-11-06 22:02:07,074 INFO L125 PetriNetUnfolderBase]: For 3600/3600 co-relation queries the response was YES. [2023-11-06 22:02:07,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28448 conditions, 11369 events. 8222/11369 cut-off events. For 3600/3600 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 56408 event pairs, 1738 based on Foata normal form. 72/9695 useless extension candidates. Maximal degree in co-relation 28431. Up to 6862 conditions per place. [2023-11-06 22:02:07,147 INFO L140 encePairwiseOnDemand]: 526/534 looper letters, 121 selfloop transitions, 8 changer transitions 9/140 dead transitions. [2023-11-06 22:02:07,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 140 transitions, 796 flow [2023-11-06 22:02:07,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:02:07,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:02:07,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1203 transitions. [2023-11-06 22:02:07,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45056179775280897 [2023-11-06 22:02:07,153 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1203 transitions. [2023-11-06 22:02:07,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1203 transitions. [2023-11-06 22:02:07,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:07,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1203 transitions. [2023-11-06 22:02:07,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 240.6) internal successors, (1203), 5 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:07,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 534.0) internal successors, (3204), 6 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:07,164 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 534.0) internal successors, (3204), 6 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:07,164 INFO L175 Difference]: Start difference. First operand has 67 places, 85 transitions, 371 flow. Second operand 5 states and 1203 transitions. [2023-11-06 22:02:07,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 140 transitions, 796 flow [2023-11-06 22:02:07,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 140 transitions, 794 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:02:07,176 INFO L231 Difference]: Finished difference. Result has 71 places, 85 transitions, 390 flow [2023-11-06 22:02:07,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=534, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=390, PETRI_PLACES=71, PETRI_TRANSITIONS=85} [2023-11-06 22:02:07,178 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 7 predicate places. [2023-11-06 22:02:07,178 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 85 transitions, 390 flow [2023-11-06 22:02:07,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:07,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:07,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:07,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:07,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:02:07,385 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-06 22:02:07,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:07,385 INFO L85 PathProgramCache]: Analyzing trace with hash 12617170, now seen corresponding path program 1 times [2023-11-06 22:02:07,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:07,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55565436] [2023-11-06 22:02:07,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:07,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:08,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:08,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55565436] [2023-11-06 22:02:08,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55565436] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:08,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493575711] [2023-11-06 22:02:08,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:08,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:08,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:08,357 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:08,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d985368-19b8-49b9-a43f-d2acb8249561/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:02:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:08,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:02:08,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:08,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:02:08,785 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:02:08,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:08,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:09,047 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:02:09,048 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 38 [2023-11-06 22:02:09,079 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-06 22:02:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:09,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493575711] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:09,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:09,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 19 [2023-11-06 22:02:09,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507112698] [2023-11-06 22:02:09,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:09,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 22:02:09,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:09,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:02:09,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:02:11,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 534 [2023-11-06 22:02:11,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 85 transitions, 390 flow. Second operand has 21 states, 21 states have (on average 184.8095238095238) internal successors, (3881), 21 states have internal predecessors, (3881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:11,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:11,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 534 [2023-11-06 22:02:11,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand