./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-sum.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_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/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_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/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_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/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 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:09:23,347 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:09:23,463 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:09:23,476 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:09:23,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:09:23,516 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:09:23,516 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:09:23,517 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:09:23,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:09:23,519 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:09:23,520 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:09:23,520 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:09:23,521 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:09:23,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:09:23,522 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:09:23,523 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:09:23,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:09:23,524 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:09:23,525 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:09:23,525 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:09:23,526 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:09:23,526 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:09:23,527 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:09:23,528 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:09:23,528 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:09:23,529 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:09:23,529 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:09:23,530 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:09:23,530 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:09:23,530 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:09:23,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:09:23,531 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:09:23,532 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:09:23,532 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:09:23,532 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:09:23,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:09:23,533 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:09:23,533 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:09:23,533 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:09:23,534 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:09:23,534 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:09:23,534 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_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 [2023-11-06 22:09:23,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:09:23,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:09:23,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:09:23,927 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:09:23,928 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:09:23,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2023-11-06 22:09:27,050 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:09:27,250 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:09:27,250 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2023-11-06 22:09:27,260 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/data/c7dafa81e/70dab3dd01d540b990d95461a99624f6/FLAG54c101fa0 [2023-11-06 22:09:27,303 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/data/c7dafa81e/70dab3dd01d540b990d95461a99624f6 [2023-11-06 22:09:27,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:09:27,308 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:09:27,310 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:09:27,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:09:27,316 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:09:27,319 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:09:27" (1/1) ... [2023-11-06 22:09:27,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a63e17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:27, skipping insertion in model container [2023-11-06 22:09:27,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:09:27" (1/1) ... [2023-11-06 22:09:27,350 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:09:27,531 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:09:27,542 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:09:27,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:09:27,579 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:09:27,580 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:09:27,587 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:09:27,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:27 WrapperNode [2023-11-06 22:09:27,588 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:09:27,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:09:27,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:09:27,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:09:27,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:27" (1/1) ... [2023-11-06 22:09:27,611 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:27" (1/1) ... [2023-11-06 22:09:27,637 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 164 [2023-11-06 22:09:27,638 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:09:27,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:09:27,644 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:09:27,644 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:09:27,652 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:27" (1/1) ... [2023-11-06 22:09:27,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:27" (1/1) ... [2023-11-06 22:09:27,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:27" (1/1) ... [2023-11-06 22:09:27,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:27" (1/1) ... [2023-11-06 22:09:27,674 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:27" (1/1) ... [2023-11-06 22:09:27,679 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:27" (1/1) ... [2023-11-06 22:09:27,681 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:27" (1/1) ... [2023-11-06 22:09:27,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:27" (1/1) ... [2023-11-06 22:09:27,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:09:27,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:09:27,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:09:27,689 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:09:27,690 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:27" (1/1) ... [2023-11-06 22:09:27,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:09:27,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:27,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:09:27,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:09:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:09:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:09:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:09:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:09:27,796 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:09:27,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:09:27,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:09:27,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:09:27,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:09:27,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:09:27,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:09:27,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:09:27,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:09:27,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:09:27,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:09:27,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:09:27,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:09:27,803 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 22:09:28,017 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:09:28,020 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:09:28,455 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:09:28,530 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:09:28,538 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:09:28,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:09:28 BoogieIcfgContainer [2023-11-06 22:09:28,543 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:09:28,546 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:09:28,546 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:09:28,550 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:09:28,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:09:27" (1/3) ... [2023-11-06 22:09:28,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253f470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:09:28, skipping insertion in model container [2023-11-06 22:09:28,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:27" (2/3) ... [2023-11-06 22:09:28,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253f470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:09:28, skipping insertion in model container [2023-11-06 22:09:28,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:09:28" (3/3) ... [2023-11-06 22:09:28,558 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2023-11-06 22:09:28,567 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:09:28,578 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:09:28,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-06 22:09:28,579 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:09:28,683 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:09:28,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 262 transitions, 545 flow [2023-11-06 22:09:28,875 INFO L124 PetriNetUnfolderBase]: 20/259 cut-off events. [2023-11-06 22:09:28,876 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:09:28,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 259 events. 20/259 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 263 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 211. Up to 2 conditions per place. [2023-11-06 22:09:28,890 INFO L82 GeneralOperation]: Start removeDead. Operand has 252 places, 262 transitions, 545 flow [2023-11-06 22:09:28,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 235 transitions, 485 flow [2023-11-06 22:09:28,902 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:09:28,913 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 235 transitions, 485 flow [2023-11-06 22:09:28,917 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 235 transitions, 485 flow [2023-11-06 22:09:28,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 235 transitions, 485 flow [2023-11-06 22:09:28,974 INFO L124 PetriNetUnfolderBase]: 19/235 cut-off events. [2023-11-06 22:09:28,974 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:09:28,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 235 events. 19/235 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 261 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 211. Up to 2 conditions per place. [2023-11-06 22:09:28,980 INFO L119 LiptonReduction]: Number of co-enabled transitions 3344 [2023-11-06 22:09:37,784 INFO L134 LiptonReduction]: Checked pairs total: 5094 [2023-11-06 22:09:37,785 INFO L136 LiptonReduction]: Total number of compositions: 257 [2023-11-06 22:09:37,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:09:37,807 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;@73b88a66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:09:37,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-06 22:09:37,810 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:09:37,810 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:09:37,810 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:09:37,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:37,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:09:37,812 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:09:37,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash 31354, now seen corresponding path program 1 times [2023-11-06 22:09:37,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:37,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318176665] [2023-11-06 22:09:37,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:37,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:38,111 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 22:09:38,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:38,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318176665] [2023-11-06 22:09:38,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318176665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:38,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:38,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:09:38,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160309156] [2023-11-06 22:09:38,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:38,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:38,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:38,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:38,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:38,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 519 [2023-11-06 22:09:38,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:38,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:38,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 519 [2023-11-06 22:09:38,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:38,656 INFO L124 PetriNetUnfolderBase]: 1604/2121 cut-off events. [2023-11-06 22:09:38,656 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2023-11-06 22:09:38,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4329 conditions, 2121 events. 1604/2121 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 8634 event pairs, 848 based on Foata normal form. 0/880 useless extension candidates. Maximal degree in co-relation 3694. Up to 2089 conditions per place. [2023-11-06 22:09:38,678 INFO L140 encePairwiseOnDemand]: 504/519 looper letters, 37 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2023-11-06 22:09:38,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 47 transitions, 197 flow [2023-11-06 22:09:38,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:38,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2023-11-06 22:09:38,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630700064226076 [2023-11-06 22:09:38,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2023-11-06 22:09:38,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2023-11-06 22:09:38,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:38,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2023-11-06 22:09:38,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:38,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:38,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:38,725 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 101 flow. Second operand 3 states and 721 transitions. [2023-11-06 22:09:38,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 47 transitions, 197 flow [2023-11-06 22:09:38,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 188 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:09:38,738 INFO L231 Difference]: Finished difference. Result has 43 places, 47 transitions, 152 flow [2023-11-06 22:09:38,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=43, PETRI_TRANSITIONS=47} [2023-11-06 22:09:38,744 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-11-06 22:09:38,745 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 47 transitions, 152 flow [2023-11-06 22:09:38,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:38,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:38,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:09:38,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:09:38,747 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:09:38,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:38,750 INFO L85 PathProgramCache]: Analyzing trace with hash 973320, now seen corresponding path program 1 times [2023-11-06 22:09:38,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:38,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488303225] [2023-11-06 22:09:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:38,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:38,923 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 22:09:38,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:38,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488303225] [2023-11-06 22:09:38,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488303225] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:38,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702131154] [2023-11-06 22:09:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:38,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:38,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:38,930 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:38,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:09:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:39,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:09:39,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:39,088 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 22:09:39,088 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:39,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702131154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:39,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:09:39,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-06 22:09:39,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56261503] [2023-11-06 22:09:39,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:39,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:09:39,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:39,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:09:39,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:39,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 519 [2023-11-06 22:09:39,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 47 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 223.75) internal successors, (895), 4 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:39,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:39,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 519 [2023-11-06 22:09:39,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:39,557 INFO L124 PetriNetUnfolderBase]: 1604/2118 cut-off events. [2023-11-06 22:09:39,557 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-06 22:09:39,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4302 conditions, 2118 events. 1604/2118 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 8588 event pairs, 848 based on Foata normal form. 0/884 useless extension candidates. Maximal degree in co-relation 4243. Up to 2077 conditions per place. [2023-11-06 22:09:39,576 INFO L140 encePairwiseOnDemand]: 509/519 looper letters, 33 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2023-11-06 22:09:39,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 222 flow [2023-11-06 22:09:39,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:09:39,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:09:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 936 transitions. [2023-11-06 22:09:39,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4508670520231214 [2023-11-06 22:09:39,588 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 936 transitions. [2023-11-06 22:09:39,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 936 transitions. [2023-11-06 22:09:39,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:39,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 936 transitions. [2023-11-06 22:09:39,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:39,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:39,602 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:39,602 INFO L175 Difference]: Start difference. First operand has 43 places, 47 transitions, 152 flow. Second operand 4 states and 936 transitions. [2023-11-06 22:09:39,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 222 flow [2023-11-06 22:09:39,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:39,606 INFO L231 Difference]: Finished difference. Result has 41 places, 44 transitions, 142 flow [2023-11-06 22:09:39,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=41, PETRI_TRANSITIONS=44} [2023-11-06 22:09:39,608 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2023-11-06 22:09:39,608 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 44 transitions, 142 flow [2023-11-06 22:09:39,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 223.75) internal successors, (895), 4 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:39,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:39,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:09:39,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:39,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:39,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:09:39,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:39,827 INFO L85 PathProgramCache]: Analyzing trace with hash 973321, now seen corresponding path program 1 times [2023-11-06 22:09:39,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:39,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927715508] [2023-11-06 22:09:39,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:39,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:39,898 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 22:09:39,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:39,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927715508] [2023-11-06 22:09:39,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927715508] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:39,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997012910] [2023-11-06 22:09:39,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:39,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:39,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:39,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:39,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:09:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:39,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:09:39,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:40,011 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 22:09:40,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:40,049 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 22:09:40,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997012910] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:09:40,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:09:40,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:09:40,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326113755] [2023-11-06 22:09:40,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:09:40,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:09:40,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:40,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:09:40,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:09:40,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 519 [2023-11-06 22:09:40,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 142 flow. Second operand has 7 states, 7 states have (on average 224.14285714285714) internal successors, (1569), 7 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:40,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:40,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 519 [2023-11-06 22:09:40,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:40,573 INFO L124 PetriNetUnfolderBase]: 1613/2136 cut-off events. [2023-11-06 22:09:40,573 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-06 22:09:40,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4366 conditions, 2136 events. 1613/2136 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 8654 event pairs, 848 based on Foata normal form. 0/903 useless extension candidates. Maximal degree in co-relation 4243. Up to 2089 conditions per place. [2023-11-06 22:09:40,591 INFO L140 encePairwiseOnDemand]: 509/519 looper letters, 34 selfloop transitions, 25 changer transitions 0/62 dead transitions. [2023-11-06 22:09:40,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 62 transitions, 350 flow [2023-11-06 22:09:40,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:09:40,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:09:40,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1406 transitions. [2023-11-06 22:09:40,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4515093127809891 [2023-11-06 22:09:40,597 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1406 transitions. [2023-11-06 22:09:40,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1406 transitions. [2023-11-06 22:09:40,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:40,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1406 transitions. [2023-11-06 22:09:40,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 234.33333333333334) internal successors, (1406), 6 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:40,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 519.0) internal successors, (3633), 7 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:40,613 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 519.0) internal successors, (3633), 7 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:40,613 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 142 flow. Second operand 6 states and 1406 transitions. [2023-11-06 22:09:40,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 62 transitions, 350 flow [2023-11-06 22:09:40,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 331 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:40,616 INFO L231 Difference]: Finished difference. Result has 47 places, 62 transitions, 316 flow [2023-11-06 22:09:40,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=47, PETRI_TRANSITIONS=62} [2023-11-06 22:09:40,618 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2023-11-06 22:09:40,618 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 62 transitions, 316 flow [2023-11-06 22:09:40,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 224.14285714285714) internal successors, (1569), 7 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:40,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:40,620 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:09:40,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:40,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:40,826 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:09:40,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:40,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1067258373, now seen corresponding path program 2 times [2023-11-06 22:09:40,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:40,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341648957] [2023-11-06 22:09:40,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:40,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:40,941 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 22:09:40,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:40,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341648957] [2023-11-06 22:09:40,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341648957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:40,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259923119] [2023-11-06 22:09:40,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:09:40,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:40,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:40,944 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:40,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:09:41,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:09:41,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:09:41,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:09:41,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:41,051 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 22:09:41,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:41,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259923119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:41,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:09:41,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:09:41,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409906476] [2023-11-06 22:09:41,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:41,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:41,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:41,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:41,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:09:41,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 519 [2023-11-06 22:09:41,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 62 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:41,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:41,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 519 [2023-11-06 22:09:41,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:41,427 INFO L124 PetriNetUnfolderBase]: 1613/2135 cut-off events. [2023-11-06 22:09:41,428 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-06 22:09:41,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4405 conditions, 2135 events. 1613/2135 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 8657 event pairs, 848 based on Foata normal form. 1/907 useless extension candidates. Maximal degree in co-relation 4317. Up to 2102 conditions per place. [2023-11-06 22:09:41,446 INFO L140 encePairwiseOnDemand]: 516/519 looper letters, 52 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-11-06 22:09:41,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 422 flow [2023-11-06 22:09:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:41,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 722 transitions. [2023-11-06 22:09:41,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46371226718047526 [2023-11-06 22:09:41,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 722 transitions. [2023-11-06 22:09:41,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 722 transitions. [2023-11-06 22:09:41,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:41,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 722 transitions. [2023-11-06 22:09:41,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:41,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:41,459 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:41,460 INFO L175 Difference]: Start difference. First operand has 47 places, 62 transitions, 316 flow. Second operand 3 states and 722 transitions. [2023-11-06 22:09:41,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 422 flow [2023-11-06 22:09:41,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 385 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:41,467 INFO L231 Difference]: Finished difference. Result has 47 places, 61 transitions, 281 flow [2023-11-06 22:09:41,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=281, PETRI_PLACES=47, PETRI_TRANSITIONS=61} [2023-11-06 22:09:41,469 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2023-11-06 22:09:41,470 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 61 transitions, 281 flow [2023-11-06 22:09:41,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:41,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:41,471 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-06 22:09:41,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:41,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-06 22:09:41,681 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:09:41,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:41,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1953240985, now seen corresponding path program 1 times [2023-11-06 22:09:41,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:41,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969609438] [2023-11-06 22:09:41,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:41,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:41,871 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 22:09:41,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:41,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969609438] [2023-11-06 22:09:41,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969609438] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:41,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116793170] [2023-11-06 22:09:41,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:41,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:41,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:41,878 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:41,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:09:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:41,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:09:41,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:42,025 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:09:42,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:42,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116793170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:42,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:09:42,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-11-06 22:09:42,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205817453] [2023-11-06 22:09:42,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:42,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:09:42,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:42,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:09:42,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:09:42,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 519 [2023-11-06 22:09:42,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 61 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:42,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:42,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 519 [2023-11-06 22:09:42,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:42,539 INFO L124 PetriNetUnfolderBase]: 1613/2137 cut-off events. [2023-11-06 22:09:42,539 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-11-06 22:09:42,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4398 conditions, 2137 events. 1613/2137 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8652 event pairs, 848 based on Foata normal form. 2/910 useless extension candidates. Maximal degree in co-relation 4318. Up to 2098 conditions per place. [2023-11-06 22:09:42,556 INFO L140 encePairwiseOnDemand]: 512/519 looper letters, 44 selfloop transitions, 16 changer transitions 0/63 dead transitions. [2023-11-06 22:09:42,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 410 flow [2023-11-06 22:09:42,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:09:42,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:09:42,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 916 transitions. [2023-11-06 22:09:42,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441233140655106 [2023-11-06 22:09:42,560 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 916 transitions. [2023-11-06 22:09:42,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 916 transitions. [2023-11-06 22:09:42,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:42,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 916 transitions. [2023-11-06 22:09:42,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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 22:09:42,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:42,572 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:42,572 INFO L175 Difference]: Start difference. First operand has 47 places, 61 transitions, 281 flow. Second operand 4 states and 916 transitions. [2023-11-06 22:09:42,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 410 flow [2023-11-06 22:09:42,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 63 transitions, 398 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:42,576 INFO L231 Difference]: Finished difference. Result has 49 places, 63 transitions, 327 flow [2023-11-06 22:09:42,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=327, PETRI_PLACES=49, PETRI_TRANSITIONS=63} [2023-11-06 22:09:42,579 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 3 predicate places. [2023-11-06 22:09:42,579 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 63 transitions, 327 flow [2023-11-06 22:09:42,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:42,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:42,580 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-11-06 22:09:42,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:42,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:42,786 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:09:42,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:42,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1540440267, now seen corresponding path program 1 times [2023-11-06 22:09:42,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:42,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334156676] [2023-11-06 22:09:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:42,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:42,902 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:09:42,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:42,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334156676] [2023-11-06 22:09:42,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334156676] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:42,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694127123] [2023-11-06 22:09:42,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:42,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:42,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:42,904 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:42,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:09:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:43,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:09:43,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:43,088 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:09:43,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:09:43,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694127123] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:09:43,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:09:43,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2023-11-06 22:09:43,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625277476] [2023-11-06 22:09:43,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:09:43,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:09:43,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:43,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:09:43,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:09:43,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 519 [2023-11-06 22:09:43,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 63 transitions, 327 flow. Second operand has 15 states, 15 states have (on average 213.33333333333334) internal successors, (3200), 15 states have internal predecessors, (3200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:43,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:43,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 519 [2023-11-06 22:09:43,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:44,670 INFO L124 PetriNetUnfolderBase]: 3166/4202 cut-off events. [2023-11-06 22:09:44,670 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-11-06 22:09:44,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8613 conditions, 4202 events. 3166/4202 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 17826 event pairs, 1685 based on Foata normal form. 4/1810 useless extension candidates. Maximal degree in co-relation 8506. Up to 2079 conditions per place. [2023-11-06 22:09:44,708 INFO L140 encePairwiseOnDemand]: 510/519 looper letters, 55 selfloop transitions, 42 changer transitions 0/100 dead transitions. [2023-11-06 22:09:44,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 100 transitions, 671 flow [2023-11-06 22:09:44,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:09:44,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:09:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2645 transitions. [2023-11-06 22:09:44,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42469492614001286 [2023-11-06 22:09:44,719 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2645 transitions. [2023-11-06 22:09:44,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2645 transitions. [2023-11-06 22:09:44,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:44,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2645 transitions. [2023-11-06 22:09:44,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 220.41666666666666) internal successors, (2645), 12 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:44,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 519.0) internal successors, (6747), 13 states have internal predecessors, (6747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:44,745 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 519.0) internal successors, (6747), 13 states have internal predecessors, (6747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:44,746 INFO L175 Difference]: Start difference. First operand has 49 places, 63 transitions, 327 flow. Second operand 12 states and 2645 transitions. [2023-11-06 22:09:44,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 100 transitions, 671 flow [2023-11-06 22:09:44,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 100 transitions, 645 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:44,750 INFO L231 Difference]: Finished difference. Result has 60 places, 75 transitions, 496 flow [2023-11-06 22:09:44,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=496, PETRI_PLACES=60, PETRI_TRANSITIONS=75} [2023-11-06 22:09:44,751 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2023-11-06 22:09:44,752 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 75 transitions, 496 flow [2023-11-06 22:09:44,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 213.33333333333334) internal successors, (3200), 15 states have internal predecessors, (3200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:44,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:44,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:44,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 22:09:44,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:44,960 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:09:44,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:44,960 INFO L85 PathProgramCache]: Analyzing trace with hash 482201372, now seen corresponding path program 1 times [2023-11-06 22:09:44,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:44,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490996737] [2023-11-06 22:09:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:44,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:45,035 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 22:09:45,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:45,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490996737] [2023-11-06 22:09:45,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490996737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:45,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:45,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:09:45,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194650119] [2023-11-06 22:09:45,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:45,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:45,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:45,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:45,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:45,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 519 [2023-11-06 22:09:45,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 75 transitions, 496 flow. Second operand has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:45,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:45,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 519 [2023-11-06 22:09:45,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:45,780 INFO L124 PetriNetUnfolderBase]: 4295/5619 cut-off events. [2023-11-06 22:09:45,780 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:09:45,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11561 conditions, 5619 events. 4295/5619 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 24127 event pairs, 990 based on Foata normal form. 0/2523 useless extension candidates. Maximal degree in co-relation 11456. Up to 4332 conditions per place. [2023-11-06 22:09:45,827 INFO L140 encePairwiseOnDemand]: 514/519 looper letters, 88 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2023-11-06 22:09:45,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 717 flow [2023-11-06 22:09:45,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:45,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:45,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 760 transitions. [2023-11-06 22:09:45,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4881181759794477 [2023-11-06 22:09:45,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 760 transitions. [2023-11-06 22:09:45,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 760 transitions. [2023-11-06 22:09:45,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:45,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 760 transitions. [2023-11-06 22:09:45,834 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 22:09:45,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:45,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:45,841 INFO L175 Difference]: Start difference. First operand has 60 places, 75 transitions, 496 flow. Second operand 3 states and 760 transitions. [2023-11-06 22:09:45,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 717 flow [2023-11-06 22:09:45,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 93 transitions, 601 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-11-06 22:09:45,846 INFO L231 Difference]: Finished difference. Result has 55 places, 77 transitions, 401 flow [2023-11-06 22:09:45,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=401, PETRI_PLACES=55, PETRI_TRANSITIONS=77} [2023-11-06 22:09:45,848 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2023-11-06 22:09:45,848 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 77 transitions, 401 flow [2023-11-06 22:09:45,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:45,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:45,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:45,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:09:45,852 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:09:45,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:45,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2070481818, now seen corresponding path program 1 times [2023-11-06 22:09:45,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:45,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353032806] [2023-11-06 22:09:45,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:45,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:45,906 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 22:09:45,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:45,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353032806] [2023-11-06 22:09:45,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353032806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:45,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:45,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:09:45,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029644430] [2023-11-06 22:09:45,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:45,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:45,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:45,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:45,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:45,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 519 [2023-11-06 22:09:45,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 77 transitions, 401 flow. Second operand has 3 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:45,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:45,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 519 [2023-11-06 22:09:45,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:46,540 INFO L124 PetriNetUnfolderBase]: 4009/5411 cut-off events. [2023-11-06 22:09:46,540 INFO L125 PetriNetUnfolderBase]: For 718/880 co-relation queries the response was YES. [2023-11-06 22:09:46,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12422 conditions, 5411 events. 4009/5411 cut-off events. For 718/880 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 24152 event pairs, 2040 based on Foata normal form. 162/3239 useless extension candidates. Maximal degree in co-relation 12339. Up to 4522 conditions per place. [2023-11-06 22:09:46,582 INFO L140 encePairwiseOnDemand]: 514/519 looper letters, 92 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2023-11-06 22:09:46,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 97 transitions, 648 flow [2023-11-06 22:09:46,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:46,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:46,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 760 transitions. [2023-11-06 22:09:46,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4881181759794477 [2023-11-06 22:09:46,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 760 transitions. [2023-11-06 22:09:46,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 760 transitions. [2023-11-06 22:09:46,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:46,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 760 transitions. [2023-11-06 22:09:46,591 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 22:09:46,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:46,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:46,599 INFO L175 Difference]: Start difference. First operand has 55 places, 77 transitions, 401 flow. Second operand 3 states and 760 transitions. [2023-11-06 22:09:46,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 97 transitions, 648 flow [2023-11-06 22:09:46,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 97 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:46,606 INFO L231 Difference]: Finished difference. Result has 57 places, 79 transitions, 419 flow [2023-11-06 22:09:46,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=419, PETRI_PLACES=57, PETRI_TRANSITIONS=79} [2023-11-06 22:09:46,610 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2023-11-06 22:09:46,610 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 79 transitions, 419 flow [2023-11-06 22:09:46,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:46,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:46,611 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-11-06 22:09:46,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:09:46,611 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:09:46,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:46,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1055488988, now seen corresponding path program 2 times [2023-11-06 22:09:46,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:46,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846699802] [2023-11-06 22:09:46,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:46,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:09:46,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:46,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846699802] [2023-11-06 22:09:46,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846699802] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:46,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160214765] [2023-11-06 22:09:46,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:09:46,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:46,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:46,835 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:46,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:09:46,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:09:46,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:09:46,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:09:46,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:09:46,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:46,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160214765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:46,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:09:46,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-11-06 22:09:46,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495402707] [2023-11-06 22:09:46,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:46,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:09:46,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:46,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:09:46,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:09:47,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 519 [2023-11-06 22:09:47,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 79 transitions, 419 flow. Second operand has 4 states, 4 states have (on average 228.25) internal successors, (913), 4 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:47,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:47,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 519 [2023-11-06 22:09:47,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:47,661 INFO L124 PetriNetUnfolderBase]: 2713/3679 cut-off events. [2023-11-06 22:09:47,661 INFO L125 PetriNetUnfolderBase]: For 876/1180 co-relation queries the response was YES. [2023-11-06 22:09:47,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9701 conditions, 3679 events. 2713/3679 cut-off events. For 876/1180 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 16010 event pairs, 1586 based on Foata normal form. 306/2361 useless extension candidates. Maximal degree in co-relation 9625. Up to 3605 conditions per place. [2023-11-06 22:09:47,688 INFO L140 encePairwiseOnDemand]: 514/519 looper letters, 63 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2023-11-06 22:09:47,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 549 flow [2023-11-06 22:09:47,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:09:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:09:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 942 transitions. [2023-11-06 22:09:47,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45375722543352603 [2023-11-06 22:09:47,694 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 942 transitions. [2023-11-06 22:09:47,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 942 transitions. [2023-11-06 22:09:47,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:47,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 942 transitions. [2023-11-06 22:09:47,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 235.5) internal successors, (942), 4 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:47,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:47,708 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:47,709 INFO L175 Difference]: Start difference. First operand has 57 places, 79 transitions, 419 flow. Second operand 4 states and 942 transitions. [2023-11-06 22:09:47,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 549 flow [2023-11-06 22:09:47,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 76 transitions, 516 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:47,715 INFO L231 Difference]: Finished difference. Result has 54 places, 76 transitions, 390 flow [2023-11-06 22:09:47,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=54, PETRI_TRANSITIONS=76} [2023-11-06 22:09:47,716 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 8 predicate places. [2023-11-06 22:09:47,716 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 76 transitions, 390 flow [2023-11-06 22:09:47,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 228.25) internal successors, (913), 4 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:47,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:47,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:47,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:47,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:47,926 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:09:47,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:47,927 INFO L85 PathProgramCache]: Analyzing trace with hash -239566311, now seen corresponding path program 1 times [2023-11-06 22:09:47,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:47,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269741699] [2023-11-06 22:09:47,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:47,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:47,998 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 22:09:47,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:47,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269741699] [2023-11-06 22:09:47,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269741699] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:47,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018402077] [2023-11-06 22:09:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:48,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:48,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:48,001 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:48,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:09:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:48,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:09:48,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:48,139 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 22:09:48,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:48,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018402077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:48,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:09:48,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 22:09:48,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798988143] [2023-11-06 22:09:48,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:48,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:09:48,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:48,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:09:48,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:48,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 519 [2023-11-06 22:09:48,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 76 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 237.5) internal successors, (950), 4 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:48,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:48,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 519 [2023-11-06 22:09:48,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:48,695 INFO L124 PetriNetUnfolderBase]: 2799/3759 cut-off events. [2023-11-06 22:09:48,696 INFO L125 PetriNetUnfolderBase]: For 687/795 co-relation queries the response was YES. [2023-11-06 22:09:48,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9280 conditions, 3759 events. 2799/3759 cut-off events. For 687/795 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 15895 event pairs, 700 based on Foata normal form. 108/2647 useless extension candidates. Maximal degree in co-relation 9207. Up to 1792 conditions per place. [2023-11-06 22:09:48,721 INFO L140 encePairwiseOnDemand]: 515/519 looper letters, 105 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2023-11-06 22:09:48,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 111 transitions, 706 flow [2023-11-06 22:09:48,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:09:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:09:48,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1006 transitions. [2023-11-06 22:09:48,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48458574181117536 [2023-11-06 22:09:48,727 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1006 transitions. [2023-11-06 22:09:48,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1006 transitions. [2023-11-06 22:09:48,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:48,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1006 transitions. [2023-11-06 22:09:48,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 251.5) internal successors, (1006), 4 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:48,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:48,739 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:48,740 INFO L175 Difference]: Start difference. First operand has 54 places, 76 transitions, 390 flow. Second operand 4 states and 1006 transitions. [2023-11-06 22:09:48,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 111 transitions, 706 flow [2023-11-06 22:09:48,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 111 transitions, 695 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:48,746 INFO L231 Difference]: Finished difference. Result has 54 places, 75 transitions, 383 flow [2023-11-06 22:09:48,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=383, PETRI_PLACES=54, PETRI_TRANSITIONS=75} [2023-11-06 22:09:48,748 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 8 predicate places. [2023-11-06 22:09:48,748 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 75 transitions, 383 flow [2023-11-06 22:09:48,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 237.5) internal successors, (950), 4 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:48,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:48,749 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:48,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:48,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:09:48,956 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:09:48,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:48,957 INFO L85 PathProgramCache]: Analyzing trace with hash -460880012, now seen corresponding path program 1 times [2023-11-06 22:09:48,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:48,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835365784] [2023-11-06 22:09:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:48,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:49,033 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 22:09:49,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:49,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835365784] [2023-11-06 22:09:49,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835365784] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:49,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508400302] [2023-11-06 22:09:49,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:49,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:49,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:49,036 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:49,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:09:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:49,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:09:49,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:49,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:09:49,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:49,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508400302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:49,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:09:49,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-11-06 22:09:49,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909108207] [2023-11-06 22:09:49,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:49,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:49,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:49,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:49,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:09:49,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 519 [2023-11-06 22:09:49,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 75 transitions, 383 flow. Second operand has 5 states, 5 states have (on average 216.0) internal successors, (1080), 5 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:49,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:49,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 519 [2023-11-06 22:09:49,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:50,028 INFO L124 PetriNetUnfolderBase]: 2770/3783 cut-off events. [2023-11-06 22:09:50,028 INFO L125 PetriNetUnfolderBase]: For 2715/2994 co-relation queries the response was YES. [2023-11-06 22:09:50,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10164 conditions, 3783 events. 2770/3783 cut-off events. For 2715/2994 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 16849 event pairs, 1379 based on Foata normal form. 323/3186 useless extension candidates. Maximal degree in co-relation 10091. Up to 3087 conditions per place. [2023-11-06 22:09:50,049 INFO L140 encePairwiseOnDemand]: 509/519 looper letters, 83 selfloop transitions, 25 changer transitions 2/112 dead transitions. [2023-11-06 22:09:50,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 112 transitions, 714 flow [2023-11-06 22:09:50,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:09:50,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:09:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1357 transitions. [2023-11-06 22:09:50,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357739242132306 [2023-11-06 22:09:50,055 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1357 transitions. [2023-11-06 22:09:50,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1357 transitions. [2023-11-06 22:09:50,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:50,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1357 transitions. [2023-11-06 22:09:50,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 226.16666666666666) internal successors, (1357), 6 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:50,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 519.0) internal successors, (3633), 7 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:50,066 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 519.0) internal successors, (3633), 7 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:50,066 INFO L175 Difference]: Start difference. First operand has 54 places, 75 transitions, 383 flow. Second operand 6 states and 1357 transitions. [2023-11-06 22:09:50,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 112 transitions, 714 flow [2023-11-06 22:09:50,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 112 transitions, 700 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:50,071 INFO L231 Difference]: Finished difference. Result has 59 places, 77 transitions, 448 flow [2023-11-06 22:09:50,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=448, PETRI_PLACES=59, PETRI_TRANSITIONS=77} [2023-11-06 22:09:50,072 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2023-11-06 22:09:50,072 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 77 transitions, 448 flow [2023-11-06 22:09:50,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.0) internal successors, (1080), 5 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:50,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:50,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:50,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:50,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:50,279 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:09:50,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:50,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1940864104, now seen corresponding path program 1 times [2023-11-06 22:09:50,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:50,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291001450] [2023-11-06 22:09:50,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:50,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:50,338 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 22:09:50,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:50,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291001450] [2023-11-06 22:09:50,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291001450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:50,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:50,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:09:50,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515605728] [2023-11-06 22:09:50,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:50,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:50,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:50,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:50,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:50,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 519 [2023-11-06 22:09:50,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 77 transitions, 448 flow. Second operand has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:50,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:50,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 519 [2023-11-06 22:09:50,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:50,984 INFO L124 PetriNetUnfolderBase]: 3459/4705 cut-off events. [2023-11-06 22:09:50,984 INFO L125 PetriNetUnfolderBase]: For 3178/3844 co-relation queries the response was YES. [2023-11-06 22:09:50,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12463 conditions, 4705 events. 3459/4705 cut-off events. For 3178/3844 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22222 event pairs, 1407 based on Foata normal form. 666/4398 useless extension candidates. Maximal degree in co-relation 12384. Up to 3237 conditions per place. [2023-11-06 22:09:51,016 INFO L140 encePairwiseOnDemand]: 515/519 looper letters, 93 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-11-06 22:09:51,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 98 transitions, 712 flow [2023-11-06 22:09:51,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:51,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 757 transitions. [2023-11-06 22:09:51,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861913937058446 [2023-11-06 22:09:51,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 757 transitions. [2023-11-06 22:09:51,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 757 transitions. [2023-11-06 22:09:51,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:51,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 757 transitions. [2023-11-06 22:09:51,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:51,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:51,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:51,028 INFO L175 Difference]: Start difference. First operand has 59 places, 77 transitions, 448 flow. Second operand 3 states and 757 transitions. [2023-11-06 22:09:51,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 98 transitions, 712 flow [2023-11-06 22:09:51,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 98 transitions, 669 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:09:51,034 INFO L231 Difference]: Finished difference. Result has 59 places, 78 transitions, 419 flow [2023-11-06 22:09:51,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=419, PETRI_PLACES=59, PETRI_TRANSITIONS=78} [2023-11-06 22:09:51,035 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2023-11-06 22:09:51,036 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 78 transitions, 419 flow [2023-11-06 22:09:51,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:51,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:51,036 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:51,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:09:51,037 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:09:51,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:51,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1598168226, now seen corresponding path program 1 times [2023-11-06 22:09:51,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:51,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457559662] [2023-11-06 22:09:51,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:51,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:09:51,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:51,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457559662] [2023-11-06 22:09:51,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457559662] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:51,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333465983] [2023-11-06 22:09:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:51,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:51,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:51,139 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:51,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:09:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:51,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:09:51,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:51,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:09:51,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:09:51,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333465983] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:09:51,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:09:51,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-11-06 22:09:51,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18747793] [2023-11-06 22:09:51,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:09:51,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:09:51,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:51,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:09:51,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:09:52,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 519 [2023-11-06 22:09:52,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 78 transitions, 419 flow. Second operand has 13 states, 13 states have (on average 209.53846153846155) internal successors, (2724), 13 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:52,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:52,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 519 [2023-11-06 22:09:52,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:53,138 INFO L124 PetriNetUnfolderBase]: 4348/5847 cut-off events. [2023-11-06 22:09:53,138 INFO L125 PetriNetUnfolderBase]: For 3417/3855 co-relation queries the response was YES. [2023-11-06 22:09:53,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16166 conditions, 5847 events. 4348/5847 cut-off events. For 3417/3855 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 27063 event pairs, 1342 based on Foata normal form. 500/5035 useless extension candidates. Maximal degree in co-relation 16090. Up to 1946 conditions per place. [2023-11-06 22:09:53,179 INFO L140 encePairwiseOnDemand]: 506/519 looper letters, 129 selfloop transitions, 39 changer transitions 3/173 dead transitions. [2023-11-06 22:09:53,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 173 transitions, 1078 flow [2023-11-06 22:09:53,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:09:53,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:09:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2410 transitions. [2023-11-06 22:09:53,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42214047994394815 [2023-11-06 22:09:53,190 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2410 transitions. [2023-11-06 22:09:53,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2410 transitions. [2023-11-06 22:09:53,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:53,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2410 transitions. [2023-11-06 22:09:53,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 219.0909090909091) internal successors, (2410), 11 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:53,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 519.0) internal successors, (6228), 12 states have internal predecessors, (6228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:53,215 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 519.0) internal successors, (6228), 12 states have internal predecessors, (6228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:53,215 INFO L175 Difference]: Start difference. First operand has 59 places, 78 transitions, 419 flow. Second operand 11 states and 2410 transitions. [2023-11-06 22:09:53,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 173 transitions, 1078 flow [2023-11-06 22:09:53,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 173 transitions, 1071 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:53,229 INFO L231 Difference]: Finished difference. Result has 71 places, 85 transitions, 558 flow [2023-11-06 22:09:53,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=558, PETRI_PLACES=71, PETRI_TRANSITIONS=85} [2023-11-06 22:09:53,231 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2023-11-06 22:09:53,231 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 85 transitions, 558 flow [2023-11-06 22:09:53,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 209.53846153846155) internal successors, (2724), 13 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:53,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:53,232 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:53,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:53,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:53,438 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:09:53,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:53,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1154682653, now seen corresponding path program 1 times [2023-11-06 22:09:53,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:53,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36800681] [2023-11-06 22:09:53,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:53,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:53,511 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 22:09:53,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:53,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36800681] [2023-11-06 22:09:53,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36800681] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:53,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41660909] [2023-11-06 22:09:53,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:53,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:53,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:53,514 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:53,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:09:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:53,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:09:53,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:09:53,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:53,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41660909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:53,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:09:53,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-11-06 22:09:53,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560962636] [2023-11-06 22:09:53,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:53,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:53,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:53,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:53,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:09:53,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 519 [2023-11-06 22:09:53,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 85 transitions, 558 flow. Second operand has 5 states, 5 states have (on average 217.8) internal successors, (1089), 5 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:53,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:53,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 519 [2023-11-06 22:09:53,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:54,548 INFO L124 PetriNetUnfolderBase]: 3295/4493 cut-off events. [2023-11-06 22:09:54,548 INFO L125 PetriNetUnfolderBase]: For 5501/5957 co-relation queries the response was YES. [2023-11-06 22:09:54,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13708 conditions, 4493 events. 3295/4493 cut-off events. For 5501/5957 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 20282 event pairs, 1929 based on Foata normal form. 456/4234 useless extension candidates. Maximal degree in co-relation 13622. Up to 4251 conditions per place. [2023-11-06 22:09:54,575 INFO L140 encePairwiseOnDemand]: 509/519 looper letters, 56 selfloop transitions, 17 changer transitions 35/111 dead transitions. [2023-11-06 22:09:54,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 111 transitions, 858 flow [2023-11-06 22:09:54,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:09:54,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:09:54,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1354 transitions. [2023-11-06 22:09:54,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43481053307642903 [2023-11-06 22:09:54,582 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1354 transitions. [2023-11-06 22:09:54,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1354 transitions. [2023-11-06 22:09:54,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:54,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1354 transitions. [2023-11-06 22:09:54,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 225.66666666666666) internal successors, (1354), 6 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:54,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 519.0) internal successors, (3633), 7 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:54,594 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 519.0) internal successors, (3633), 7 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:54,594 INFO L175 Difference]: Start difference. First operand has 71 places, 85 transitions, 558 flow. Second operand 6 states and 1354 transitions. [2023-11-06 22:09:54,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 111 transitions, 858 flow [2023-11-06 22:09:54,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 111 transitions, 808 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-06 22:09:54,604 INFO L231 Difference]: Finished difference. Result has 73 places, 76 transitions, 478 flow [2023-11-06 22:09:54,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=478, PETRI_PLACES=73, PETRI_TRANSITIONS=76} [2023-11-06 22:09:54,605 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2023-11-06 22:09:54,605 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 76 transitions, 478 flow [2023-11-06 22:09:54,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.8) internal successors, (1089), 5 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:54,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:54,606 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:54,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:54,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:09:54,811 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:09:54,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:54,812 INFO L85 PathProgramCache]: Analyzing trace with hash 155414006, now seen corresponding path program 1 times [2023-11-06 22:09:54,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:54,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803806059] [2023-11-06 22:09:54,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:54,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-06 22:09:54,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:54,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803806059] [2023-11-06 22:09:54,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803806059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:54,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:54,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:09:54,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809822665] [2023-11-06 22:09:54,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:54,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:54,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:54,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:54,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:54,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 519 [2023-11-06 22:09:54,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 76 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 239.33333333333334) internal successors, (718), 3 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:54,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:54,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 519 [2023-11-06 22:09:54,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:55,459 INFO L124 PetriNetUnfolderBase]: 3430/4603 cut-off events. [2023-11-06 22:09:55,459 INFO L125 PetriNetUnfolderBase]: For 5069/5414 co-relation queries the response was YES. [2023-11-06 22:09:55,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14185 conditions, 4603 events. 3430/4603 cut-off events. For 5069/5414 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 20033 event pairs, 1050 based on Foata normal form. 469/4455 useless extension candidates. Maximal degree in co-relation 14096. Up to 2606 conditions per place. [2023-11-06 22:09:55,477 INFO L140 encePairwiseOnDemand]: 516/519 looper letters, 81 selfloop transitions, 7 changer transitions 0/90 dead transitions. [2023-11-06 22:09:55,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 90 transitions, 695 flow [2023-11-06 22:09:55,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:55,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:55,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 749 transitions. [2023-11-06 22:09:55,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481053307642903 [2023-11-06 22:09:55,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 749 transitions. [2023-11-06 22:09:55,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 749 transitions. [2023-11-06 22:09:55,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:55,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 749 transitions. [2023-11-06 22:09:55,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:55,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:55,485 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:55,485 INFO L175 Difference]: Start difference. First operand has 73 places, 76 transitions, 478 flow. Second operand 3 states and 749 transitions. [2023-11-06 22:09:55,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 90 transitions, 695 flow [2023-11-06 22:09:55,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 591 flow, removed 11 selfloop flow, removed 9 redundant places. [2023-11-06 22:09:55,496 INFO L231 Difference]: Finished difference. Result has 59 places, 74 transitions, 378 flow [2023-11-06 22:09:55,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=59, PETRI_TRANSITIONS=74} [2023-11-06 22:09:55,497 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2023-11-06 22:09:55,497 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 74 transitions, 378 flow [2023-11-06 22:09:55,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.33333333333334) internal successors, (718), 3 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:55,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:55,498 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:55,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:09:55,498 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:09:55,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:55,499 INFO L85 PathProgramCache]: Analyzing trace with hash 88434183, now seen corresponding path program 1 times [2023-11-06 22:09:55,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:55,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778275235] [2023-11-06 22:09:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:55,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:55,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:09:55,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:55,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778275235] [2023-11-06 22:09:55,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778275235] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:55,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31088137] [2023-11-06 22:09:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:55,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:55,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:55,570 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:55,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:09:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:55,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:09:55,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:55,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:09:55,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:55,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:09:55,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31088137] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:09:55,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:09:55,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-11-06 22:09:55,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939087936] [2023-11-06 22:09:55,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:09:55,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:09:55,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:55,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:09:55,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:09:56,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 519 [2023-11-06 22:09:56,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 74 transitions, 378 flow. Second operand has 13 states, 13 states have (on average 211.15384615384616) internal successors, (2745), 13 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:56,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:56,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 519 [2023-11-06 22:09:56,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:57,204 INFO L124 PetriNetUnfolderBase]: 3308/4476 cut-off events. [2023-11-06 22:09:57,204 INFO L125 PetriNetUnfolderBase]: For 3800/4222 co-relation queries the response was YES. [2023-11-06 22:09:57,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13080 conditions, 4476 events. 3308/4476 cut-off events. For 3800/4222 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 19699 event pairs, 664 based on Foata normal form. 422/4120 useless extension candidates. Maximal degree in co-relation 13008. Up to 1401 conditions per place. [2023-11-06 22:09:57,222 INFO L140 encePairwiseOnDemand]: 505/519 looper letters, 111 selfloop transitions, 22 changer transitions 82/217 dead transitions. [2023-11-06 22:09:57,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 217 transitions, 1397 flow [2023-11-06 22:09:57,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:09:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:09:57,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3063 transitions. [2023-11-06 22:09:57,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42155243600330305 [2023-11-06 22:09:57,234 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3063 transitions. [2023-11-06 22:09:57,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3063 transitions. [2023-11-06 22:09:57,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:57,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3063 transitions. [2023-11-06 22:09:57,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 218.78571428571428) internal successors, (3063), 14 states have internal predecessors, (3063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:57,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 519.0) internal successors, (7785), 15 states have internal predecessors, (7785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:57,261 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 519.0) internal successors, (7785), 15 states have internal predecessors, (7785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:57,261 INFO L175 Difference]: Start difference. First operand has 59 places, 74 transitions, 378 flow. Second operand 14 states and 3063 transitions. [2023-11-06 22:09:57,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 217 transitions, 1397 flow [2023-11-06 22:09:57,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 217 transitions, 1341 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:57,272 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 388 flow [2023-11-06 22:09:57,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=388, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2023-11-06 22:09:57,273 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2023-11-06 22:09:57,273 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 388 flow [2023-11-06 22:09:57,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 211.15384615384616) internal successors, (2745), 13 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:57,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:57,274 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:57,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:57,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:09:57,480 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:09:57,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:57,481 INFO L85 PathProgramCache]: Analyzing trace with hash -970928052, now seen corresponding path program 2 times [2023-11-06 22:09:57,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:57,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694448390] [2023-11-06 22:09:57,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:57,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:09:57,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:57,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694448390] [2023-11-06 22:09:57,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694448390] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:57,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251040112] [2023-11-06 22:09:57,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:09:57,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:57,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:57,658 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:57,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:09:57,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:09:57,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:09:57,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:09:57,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:57,839 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:09:57,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:09:57,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251040112] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:09:57,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:09:57,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-11-06 22:09:57,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566819087] [2023-11-06 22:09:57,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:09:57,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:09:57,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:57,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:09:57,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:09:58,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 519 [2023-11-06 22:09:58,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 388 flow. Second operand has 10 states, 10 states have (on average 212.9) internal successors, (2129), 10 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:58,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:58,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 519 [2023-11-06 22:09:58,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:59,287 INFO L124 PetriNetUnfolderBase]: 5579/7345 cut-off events. [2023-11-06 22:09:59,288 INFO L125 PetriNetUnfolderBase]: For 7455/8081 co-relation queries the response was YES. [2023-11-06 22:09:59,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23562 conditions, 7345 events. 5579/7345 cut-off events. For 7455/8081 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 33832 event pairs, 1089 based on Foata normal form. 626/7311 useless extension candidates. Maximal degree in co-relation 23435. Up to 2137 conditions per place. [2023-11-06 22:09:59,337 INFO L140 encePairwiseOnDemand]: 507/519 looper letters, 154 selfloop transitions, 47 changer transitions 21/224 dead transitions. [2023-11-06 22:09:59,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 224 transitions, 1595 flow [2023-11-06 22:09:59,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:09:59,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:09:59,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3298 transitions. [2023-11-06 22:09:59,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42363519588953114 [2023-11-06 22:09:59,350 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3298 transitions. [2023-11-06 22:09:59,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3298 transitions. [2023-11-06 22:09:59,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:59,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3298 transitions. [2023-11-06 22:09:59,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 219.86666666666667) internal successors, (3298), 15 states have internal predecessors, (3298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:59,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 519.0) internal successors, (8304), 16 states have internal predecessors, (8304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:59,377 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 519.0) internal successors, (8304), 16 states have internal predecessors, (8304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:59,378 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 388 flow. Second operand 15 states and 3298 transitions. [2023-11-06 22:09:59,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 224 transitions, 1595 flow [2023-11-06 22:09:59,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 224 transitions, 1519 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-11-06 22:09:59,402 INFO L231 Difference]: Finished difference. Result has 75 places, 87 transitions, 634 flow [2023-11-06 22:09:59,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=634, PETRI_PLACES=75, PETRI_TRANSITIONS=87} [2023-11-06 22:09:59,403 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 29 predicate places. [2023-11-06 22:09:59,403 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 87 transitions, 634 flow [2023-11-06 22:09:59,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 212.9) internal successors, (2129), 10 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:59,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:59,404 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:59,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:59,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:09:59,610 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:09:59,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:59,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1144501640, now seen corresponding path program 1 times [2023-11-06 22:09:59,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:59,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742810936] [2023-11-06 22:09:59,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:59,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:59,725 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-06 22:09:59,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:59,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742810936] [2023-11-06 22:09:59,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742810936] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:09:59,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891193903] [2023-11-06 22:09:59,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:59,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:59,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:59,731 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:59,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:09:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:59,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:09:59,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:59,910 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-06 22:09:59,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:59,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891193903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:59,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:09:59,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 22:09:59,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266134957] [2023-11-06 22:09:59,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:59,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:09:59,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:59,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:09:59,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:59,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 519 [2023-11-06 22:09:59,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 87 transitions, 634 flow. Second operand has 4 states, 4 states have (on average 240.25) internal successors, (961), 4 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:59,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:59,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 519 [2023-11-06 22:09:59,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:00,532 INFO L124 PetriNetUnfolderBase]: 3421/4548 cut-off events. [2023-11-06 22:10:00,532 INFO L125 PetriNetUnfolderBase]: For 7692/8131 co-relation queries the response was YES. [2023-11-06 22:10:00,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15143 conditions, 4548 events. 3421/4548 cut-off events. For 7692/8131 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 19174 event pairs, 290 based on Foata normal form. 679/4743 useless extension candidates. Maximal degree in co-relation 15001. Up to 2680 conditions per place. [2023-11-06 22:10:00,558 INFO L140 encePairwiseOnDemand]: 516/519 looper letters, 132 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2023-11-06 22:10:00,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 137 transitions, 1190 flow [2023-11-06 22:10:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:10:00,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:10:00,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 995 transitions. [2023-11-06 22:10:00,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47928709055876684 [2023-11-06 22:10:00,562 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 995 transitions. [2023-11-06 22:10:00,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 995 transitions. [2023-11-06 22:10:00,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:00,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 995 transitions. [2023-11-06 22:10:00,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:00,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:00,568 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:00,568 INFO L175 Difference]: Start difference. First operand has 75 places, 87 transitions, 634 flow. Second operand 4 states and 995 transitions. [2023-11-06 22:10:00,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 137 transitions, 1190 flow [2023-11-06 22:10:00,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 137 transitions, 1097 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-11-06 22:10:00,585 INFO L231 Difference]: Finished difference. Result has 69 places, 85 transitions, 559 flow [2023-11-06 22:10:00,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=559, PETRI_PLACES=69, PETRI_TRANSITIONS=85} [2023-11-06 22:10:00,586 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2023-11-06 22:10:00,586 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 85 transitions, 559 flow [2023-11-06 22:10:00,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 240.25) internal successors, (961), 4 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:00,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:00,587 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:00,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:00,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:10:00,793 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:10:00,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:00,793 INFO L85 PathProgramCache]: Analyzing trace with hash 354553618, now seen corresponding path program 2 times [2023-11-06 22:10:00,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:00,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278772249] [2023-11-06 22:10:00,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:00,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:00,994 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:10:00,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:00,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278772249] [2023-11-06 22:10:00,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278772249] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:00,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688258140] [2023-11-06 22:10:00,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:10:00,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:00,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:00,997 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:01,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:10:01,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:10:01,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:10:01,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:10:01,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:01,205 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:10:01,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:10:01,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688258140] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:01,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:01,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-11-06 22:10:01,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222484780] [2023-11-06 22:10:01,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:01,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:10:01,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:01,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:10:01,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:10:01,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 519 [2023-11-06 22:10:01,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 85 transitions, 559 flow. Second operand has 10 states, 10 states have (on average 214.7) internal successors, (2147), 10 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:01,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:01,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 519 [2023-11-06 22:10:01,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:02,618 INFO L124 PetriNetUnfolderBase]: 4059/5371 cut-off events. [2023-11-06 22:10:02,618 INFO L125 PetriNetUnfolderBase]: For 7041/7479 co-relation queries the response was YES. [2023-11-06 22:10:02,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16625 conditions, 5371 events. 4059/5371 cut-off events. For 7041/7479 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 23379 event pairs, 448 based on Foata normal form. 438/5149 useless extension candidates. Maximal degree in co-relation 16495. Up to 1748 conditions per place. [2023-11-06 22:10:02,640 INFO L140 encePairwiseOnDemand]: 507/519 looper letters, 0 selfloop transitions, 0 changer transitions 207/207 dead transitions. [2023-11-06 22:10:02,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 207 transitions, 1509 flow [2023-11-06 22:10:02,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:10:02,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:10:02,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3292 transitions. [2023-11-06 22:10:02,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42286448298008994 [2023-11-06 22:10:02,647 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3292 transitions. [2023-11-06 22:10:02,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3292 transitions. [2023-11-06 22:10:02,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:02,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3292 transitions. [2023-11-06 22:10:02,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 219.46666666666667) internal successors, (3292), 15 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:02,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 519.0) internal successors, (8304), 16 states have internal predecessors, (8304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:02,664 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 519.0) internal successors, (8304), 16 states have internal predecessors, (8304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:02,664 INFO L175 Difference]: Start difference. First operand has 69 places, 85 transitions, 559 flow. Second operand 15 states and 3292 transitions. [2023-11-06 22:10:02,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 207 transitions, 1509 flow [2023-11-06 22:10:02,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 207 transitions, 1503 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:02,680 INFO L231 Difference]: Finished difference. Result has 80 places, 0 transitions, 0 flow [2023-11-06 22:10:02,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=80, PETRI_TRANSITIONS=0} [2023-11-06 22:10:02,681 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 34 predicate places. [2023-11-06 22:10:02,681 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 0 transitions, 0 flow [2023-11-06 22:10:02,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 214.7) internal successors, (2147), 10 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:02,684 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2023-11-06 22:10:02,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-11-06 22:10:02,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-11-06 22:10:02,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-11-06 22:10:02,686 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-11-06 22:10:02,686 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-11-06 22:10:02,686 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-11-06 22:10:02,686 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-11-06 22:10:02,686 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-11-06 22:10:02,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-11-06 22:10:02,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-11-06 22:10:02,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-11-06 22:10:02,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-11-06 22:10:02,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-11-06 22:10:02,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2023-11-06 22:10:02,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 25 remaining) [2023-11-06 22:10:02,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 25 remaining) [2023-11-06 22:10:02,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-11-06 22:10:02,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-11-06 22:10:02,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-11-06 22:10:02,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-11-06 22:10:02,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-11-06 22:10:02,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-11-06 22:10:02,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-11-06 22:10:02,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-11-06 22:10:02,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:02,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:02,896 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:02,902 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:10:02,903 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:10:02,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:10:02 BasicIcfg [2023-11-06 22:10:02,907 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:10:02,907 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:10:02,908 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:10:02,909 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:10:02,910 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:09:28" (3/4) ... [2023-11-06 22:10:02,912 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:10:02,915 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:10:02,916 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:10:02,916 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 22:10:02,925 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2023-11-06 22:10:02,926 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:10:02,926 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:10:02,927 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:10:03,004 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:10:03,004 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:10:03,005 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:10:03,005 INFO L158 Benchmark]: Toolchain (without parser) took 35697.35ms. Allocated memory was 203.4MB in the beginning and 771.8MB in the end (delta: 568.3MB). Free memory was 174.1MB in the beginning and 574.5MB in the end (delta: -400.3MB). Peak memory consumption was 166.4MB. Max. memory is 16.1GB. [2023-11-06 22:10:03,006 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 134.2MB. Free memory was 106.6MB in the beginning and 106.5MB in the end (delta: 169.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:10:03,006 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.30ms. Allocated memory is still 203.4MB. Free memory was 174.0MB in the beginning and 164.9MB in the end (delta: 9.0MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2023-11-06 22:10:03,007 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.61ms. Allocated memory is still 203.4MB. Free memory was 164.9MB in the beginning and 162.9MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:10:03,007 INFO L158 Benchmark]: Boogie Preprocessor took 44.04ms. Allocated memory is still 203.4MB. Free memory was 162.9MB in the beginning and 160.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:10:03,007 INFO L158 Benchmark]: RCFGBuilder took 854.32ms. Allocated memory is still 203.4MB. Free memory was 160.8MB in the beginning and 151.9MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:10:03,008 INFO L158 Benchmark]: TraceAbstraction took 34360.74ms. Allocated memory was 203.4MB in the beginning and 771.8MB in the end (delta: 568.3MB). Free memory was 151.9MB in the beginning and 579.2MB in the end (delta: -427.3MB). Peak memory consumption was 458.2MB. Max. memory is 16.1GB. [2023-11-06 22:10:03,008 INFO L158 Benchmark]: Witness Printer took 97.23ms. Allocated memory is still 771.8MB. Free memory was 579.2MB in the beginning and 574.5MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:10:03,011 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 134.2MB. Free memory was 106.6MB in the beginning and 106.5MB in the end (delta: 169.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.30ms. Allocated memory is still 203.4MB. Free memory was 174.0MB in the beginning and 164.9MB in the end (delta: 9.0MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.61ms. Allocated memory is still 203.4MB. Free memory was 164.9MB in the beginning and 162.9MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.04ms. Allocated memory is still 203.4MB. Free memory was 162.9MB in the beginning and 160.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 854.32ms. Allocated memory is still 203.4MB. Free memory was 160.8MB in the beginning and 151.9MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 34360.74ms. Allocated memory was 203.4MB in the beginning and 771.8MB in the end (delta: 568.3MB). Free memory was 151.9MB in the beginning and 579.2MB in the end (delta: -427.3MB). Peak memory consumption was 458.2MB. Max. memory is 16.1GB. * Witness Printer took 97.23ms. Allocated memory is still 771.8MB. Free memory was 579.2MB in the beginning and 574.5MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.9s, 226 PlacesBefore, 46 PlacesAfterwards, 235 TransitionsBefore, 43 TransitionsAfterwards, 3344 CoEnabledTransitionPairs, 7 FixpointIterations, 152 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 29 TrivialYvCompositions, 8 ConcurrentYvCompositions, 12 ChoiceCompositions, 257 TotalNumberOfCompositions, 5094 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3338, independent: 3235, independent conditional: 0, independent unconditional: 3235, dependent: 103, dependent conditional: 0, dependent unconditional: 103, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1829, independent: 1798, independent conditional: 0, independent unconditional: 1798, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3338, independent: 1437, independent conditional: 0, independent unconditional: 1437, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 1829, unknown conditional: 0, unknown unconditional: 1829] , Statistics on independence cache: Total cache size (in pairs): 110, Positive cache size: 97, Positive conditional cache size: 0, Positive unconditional cache size: 97, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 297 locations, 25 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 34.2s, OverallIterations: 19, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 16.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3397 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2675 mSDsluCounter, 1791 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1721 mSDsCounter, 389 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7355 IncrementalHoareTripleChecker+Invalid, 7744 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 389 mSolverCounterUnsat, 70 mSDtfsCounter, 7355 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 328 GetRequests, 182 SyntacticMatches, 6 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=634occurred in iteration=17, InterpolantAutomatonStates: 123, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 369 NumberOfCodeBlocks, 338 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 411 ConstructedInterpolants, 0 QuantifiedInterpolants, 1123 SizeOfPredicates, 26 NumberOfNonLiveVariables, 2363 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 39 InterpolantComputations, 13 PerfectInterpolantSequences, 194/277 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:10:03,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d0ed4ce-6d25-4bb8-ae78-484c682b7fa7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE