./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --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_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/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_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/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_f82a45fb-4256-4d05-86f2-4b1a97b3816c/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 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:23:22,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:23:22,712 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:23:22,720 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:23:22,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:23:22,766 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:23:22,767 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:23:22,768 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:23:22,769 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:23:22,775 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:23:22,777 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:23:22,777 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:23:22,778 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:23:22,780 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:23:22,780 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:23:22,781 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:23:22,781 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:23:22,782 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:23:22,782 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:23:22,782 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:23:22,783 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:23:22,784 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:23:22,784 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:23:22,785 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:23:22,785 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:23:22,786 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:23:22,786 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:23:22,789 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:23:22,789 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:23:22,790 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:23:22,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:23:22,792 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:23:22,792 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:23:22,792 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:23:22,793 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:23:22,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:23:22,793 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:23:22,793 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:23:22,794 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:23:22,794 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:23:22,794 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:23:22,795 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_f82a45fb-4256-4d05-86f2-4b1a97b3816c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2023-11-06 22:23:23,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:23:23,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:23:23,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:23:23,176 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:23:23,176 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:23:23,177 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2023-11-06 22:23:26,392 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:23:26,857 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:23:26,858 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2023-11-06 22:23:26,899 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/data/ade3fa1b8/d88b3b9ff0cc4e958d7eb879672fed8e/FLAGc42454dd1 [2023-11-06 22:23:27,054 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/data/ade3fa1b8/d88b3b9ff0cc4e958d7eb879672fed8e [2023-11-06 22:23:27,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:23:27,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:23:27,059 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:23:27,060 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:23:27,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:23:27,067 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:23:27" (1/1) ... [2023-11-06 22:23:27,068 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155c64af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:27, skipping insertion in model container [2023-11-06 22:23:27,068 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:23:27" (1/1) ... [2023-11-06 22:23:27,161 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:23:28,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:23:28,173 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:23:28,271 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:23:28,406 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:23:28,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:28 WrapperNode [2023-11-06 22:23:28,407 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:23:28,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:23:28,409 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:23:28,409 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:23:28,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:28" (1/1) ... [2023-11-06 22:23:28,461 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:28" (1/1) ... [2023-11-06 22:23:28,513 INFO L138 Inliner]: procedures = 364, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2023-11-06 22:23:28,514 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:23:28,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:23:28,516 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:23:28,516 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:23:28,528 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:28" (1/1) ... [2023-11-06 22:23:28,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:28" (1/1) ... [2023-11-06 22:23:28,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:28" (1/1) ... [2023-11-06 22:23:28,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:28" (1/1) ... [2023-11-06 22:23:28,549 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:28" (1/1) ... [2023-11-06 22:23:28,576 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:28" (1/1) ... [2023-11-06 22:23:28,579 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:28" (1/1) ... [2023-11-06 22:23:28,580 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:28" (1/1) ... [2023-11-06 22:23:28,584 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:23:28,585 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:23:28,586 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:23:28,586 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:23:28,587 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:28" (1/1) ... [2023-11-06 22:23:28,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:23:28,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:23:28,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:23:28,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:23:28,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:23:28,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:23:28,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:23:28,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:23:28,683 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:23:28,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:23:28,729 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2023-11-06 22:23:28,730 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2023-11-06 22:23:28,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:23:28,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:23:28,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:23:28,732 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 22:23:28,975 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:23:28,977 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:23:29,257 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:23:29,267 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:23:29,267 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:23:29,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:23:29 BoogieIcfgContainer [2023-11-06 22:23:29,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:23:29,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:23:29,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:23:29,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:23:29,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:23:27" (1/3) ... [2023-11-06 22:23:29,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c02003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:23:29, skipping insertion in model container [2023-11-06 22:23:29,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:28" (2/3) ... [2023-11-06 22:23:29,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c02003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:23:29, skipping insertion in model container [2023-11-06 22:23:29,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:23:29" (3/3) ... [2023-11-06 22:23:29,283 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2023-11-06 22:23:29,297 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:23:29,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:23:29,308 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 22:23:29,308 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:23:29,375 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 22:23:29,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 108 transitions, 223 flow [2023-11-06 22:23:29,491 INFO L124 PetriNetUnfolderBase]: 8/107 cut-off events. [2023-11-06 22:23:29,492 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:23:29,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 107 events. 8/107 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 161 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-11-06 22:23:29,499 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 108 transitions, 223 flow [2023-11-06 22:23:29,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 81 transitions, 165 flow [2023-11-06 22:23:29,510 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:23:29,523 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 81 transitions, 165 flow [2023-11-06 22:23:29,527 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 81 transitions, 165 flow [2023-11-06 22:23:29,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 81 transitions, 165 flow [2023-11-06 22:23:29,557 INFO L124 PetriNetUnfolderBase]: 5/81 cut-off events. [2023-11-06 22:23:29,557 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:23:29,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 5/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-11-06 22:23:29,561 INFO L119 LiptonReduction]: Number of co-enabled transitions 1458 [2023-11-06 22:23:32,389 INFO L134 LiptonReduction]: Checked pairs total: 3174 [2023-11-06 22:23:32,389 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-11-06 22:23:32,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:23:32,416 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;@3be65793, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:23:32,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-06 22:23:32,421 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:23:32,422 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-06 22:23:32,422 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:23:32,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:32,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:23:32,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:23:32,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:32,430 INFO L85 PathProgramCache]: Analyzing trace with hash 362372666, now seen corresponding path program 1 times [2023-11-06 22:23:32,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:32,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031334470] [2023-11-06 22:23:32,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:32,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:32,840 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 22:23:32,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:32,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031334470] [2023-11-06 22:23:32,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031334470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:32,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:32,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:23:32,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31901568] [2023-11-06 22:23:32,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:32,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:23:32,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:32,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:23:32,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:23:32,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 179 [2023-11-06 22:23:32,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:32,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:32,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 179 [2023-11-06 22:23:32,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:33,094 INFO L124 PetriNetUnfolderBase]: 125/256 cut-off events. [2023-11-06 22:23:33,094 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:23:33,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 256 events. 125/256 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1022 event pairs, 42 based on Foata normal form. 5/161 useless extension candidates. Maximal degree in co-relation 502. Up to 209 conditions per place. [2023-11-06 22:23:33,099 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 29 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2023-11-06 22:23:33,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 133 flow [2023-11-06 22:23:33,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:23:33,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:23:33,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-11-06 22:23:33,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5754189944134078 [2023-11-06 22:23:33,127 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-11-06 22:23:33,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-11-06 22:23:33,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:33,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-11-06 22:23:33,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:33,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:33,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:33,153 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 49 flow. Second operand 3 states and 309 transitions. [2023-11-06 22:23:33,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 133 flow [2023-11-06 22:23:33,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 33 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:23:33,160 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 73 flow [2023-11-06 22:23:33,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-11-06 22:23:33,169 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-11-06 22:23:33,169 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 73 flow [2023-11-06 22:23:33,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:33,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:33,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:33,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:23:33,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread_function_mutexErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:23:33,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:33,172 INFO L85 PathProgramCache]: Analyzing trace with hash 347792386, now seen corresponding path program 1 times [2023-11-06 22:23:33,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:33,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961125710] [2023-11-06 22:23:33,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:33,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:33,351 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 22:23:33,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:33,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961125710] [2023-11-06 22:23:33,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961125710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:33,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:33,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:23:33,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036698536] [2023-11-06 22:23:33,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:33,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:23:33,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:33,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:23:33,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:23:33,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 179 [2023-11-06 22:23:33,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:33,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:33,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 179 [2023-11-06 22:23:33,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:33,580 INFO L124 PetriNetUnfolderBase]: 152/314 cut-off events. [2023-11-06 22:23:33,581 INFO L125 PetriNetUnfolderBase]: For 11/17 co-relation queries the response was YES. [2023-11-06 22:23:33,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 314 events. 152/314 cut-off events. For 11/17 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1470 event pairs, 64 based on Foata normal form. 1/211 useless extension candidates. Maximal degree in co-relation 705. Up to 172 conditions per place. [2023-11-06 22:23:33,591 INFO L140 encePairwiseOnDemand]: 174/179 looper letters, 33 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-11-06 22:23:33,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 39 transitions, 179 flow [2023-11-06 22:23:33,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:23:33,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:23:33,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2023-11-06 22:23:33,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5884543761638734 [2023-11-06 22:23:33,599 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2023-11-06 22:23:33,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2023-11-06 22:23:33,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:33,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2023-11-06 22:23:33,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:33,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:33,608 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:33,608 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 73 flow. Second operand 3 states and 316 transitions. [2023-11-06 22:23:33,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 39 transitions, 179 flow [2023-11-06 22:23:33,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:23:33,617 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 86 flow [2023-11-06 22:23:33,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2023-11-06 22:23:33,620 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-11-06 22:23:33,620 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 86 flow [2023-11-06 22:23:33,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:33,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:33,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:33,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:23:33,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:23:33,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:33,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1481064174, now seen corresponding path program 1 times [2023-11-06 22:23:33,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:33,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443056409] [2023-11-06 22:23:33,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:33,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:33,714 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 22:23:33,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:33,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443056409] [2023-11-06 22:23:33,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443056409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:33,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:33,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:23:33,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207242295] [2023-11-06 22:23:33,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:33,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:23:33,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:33,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:23:33,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:23:33,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 179 [2023-11-06 22:23:33,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:33,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:33,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 179 [2023-11-06 22:23:33,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:33,896 INFO L124 PetriNetUnfolderBase]: 200/461 cut-off events. [2023-11-06 22:23:33,897 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2023-11-06 22:23:33,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093 conditions, 461 events. 200/461 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2222 event pairs, 106 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 1081. Up to 269 conditions per place. [2023-11-06 22:23:33,903 INFO L140 encePairwiseOnDemand]: 174/179 looper letters, 36 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-11-06 22:23:33,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 218 flow [2023-11-06 22:23:33,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:23:33,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:23:33,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2023-11-06 22:23:33,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5772811918063314 [2023-11-06 22:23:33,907 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2023-11-06 22:23:33,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2023-11-06 22:23:33,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:33,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2023-11-06 22:23:33,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:33,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:33,912 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:33,913 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 86 flow. Second operand 3 states and 310 transitions. [2023-11-06 22:23:33,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 218 flow [2023-11-06 22:23:33,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 42 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:23:33,916 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 100 flow [2023-11-06 22:23:33,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2023-11-06 22:23:33,918 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2023-11-06 22:23:33,918 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 100 flow [2023-11-06 22:23:33,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:33,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:33,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:33,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:23:33,920 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:23:33,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:33,921 INFO L85 PathProgramCache]: Analyzing trace with hash -778940698, now seen corresponding path program 1 times [2023-11-06 22:23:33,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:33,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826930190] [2023-11-06 22:23:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:33,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:34,008 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 22:23:34,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:34,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826930190] [2023-11-06 22:23:34,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826930190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:34,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:34,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:23:34,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23899740] [2023-11-06 22:23:34,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:34,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:23:34,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:34,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:23:34,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:23:34,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 179 [2023-11-06 22:23:34,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:34,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:34,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 179 [2023-11-06 22:23:34,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:34,126 INFO L124 PetriNetUnfolderBase]: 66/227 cut-off events. [2023-11-06 22:23:34,126 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-11-06 22:23:34,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 227 events. 66/227 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1005 event pairs, 21 based on Foata normal form. 29/222 useless extension candidates. Maximal degree in co-relation 587. Up to 119 conditions per place. [2023-11-06 22:23:34,129 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 17 selfloop transitions, 10 changer transitions 0/31 dead transitions. [2023-11-06 22:23:34,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 171 flow [2023-11-06 22:23:34,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:23:34,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:23:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-11-06 22:23:34,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5623836126629422 [2023-11-06 22:23:34,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-11-06 22:23:34,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-11-06 22:23:34,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:34,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-11-06 22:23:34,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:34,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:34,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:34,138 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 100 flow. Second operand 3 states and 302 transitions. [2023-11-06 22:23:34,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 171 flow [2023-11-06 22:23:34,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:23:34,141 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 118 flow [2023-11-06 22:23:34,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-06 22:23:34,142 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2023-11-06 22:23:34,142 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 118 flow [2023-11-06 22:23:34,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:34,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:34,143 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:34,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:23:34,144 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:23:34,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:34,145 INFO L85 PathProgramCache]: Analyzing trace with hash -778947175, now seen corresponding path program 1 times [2023-11-06 22:23:34,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:34,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957107405] [2023-11-06 22:23:34,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:34,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:34,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:34,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:34,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957107405] [2023-11-06 22:23:34,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957107405] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:23:34,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720686794] [2023-11-06 22:23:34,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:34,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:23:34,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:23:34,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:23:34,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:23:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:34,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:23:34,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:34,527 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 22:23:34,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:23:34,569 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 22:23:34,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720686794] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:23:34,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:23:34,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-11-06 22:23:34,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626972600] [2023-11-06 22:23:34,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:23:34,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:23:34,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:34,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:23:34,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:23:34,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 179 [2023-11-06 22:23:34,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 118 flow. Second operand has 10 states, 10 states have (on average 87.4) internal successors, (874), 10 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:34,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:34,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 179 [2023-11-06 22:23:34,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:35,030 INFO L124 PetriNetUnfolderBase]: 234/575 cut-off events. [2023-11-06 22:23:35,030 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2023-11-06 22:23:35,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1714 conditions, 575 events. 234/575 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2683 event pairs, 31 based on Foata normal form. 20/533 useless extension candidates. Maximal degree in co-relation 1701. Up to 160 conditions per place. [2023-11-06 22:23:35,038 INFO L140 encePairwiseOnDemand]: 170/179 looper letters, 97 selfloop transitions, 37 changer transitions 0/134 dead transitions. [2023-11-06 22:23:35,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 134 transitions, 804 flow [2023-11-06 22:23:35,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:23:35,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:23:35,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1333 transitions. [2023-11-06 22:23:35,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319233838786911 [2023-11-06 22:23:35,045 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1333 transitions. [2023-11-06 22:23:35,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1333 transitions. [2023-11-06 22:23:35,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:35,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1333 transitions. [2023-11-06 22:23:35,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 95.21428571428571) internal successors, (1333), 14 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:35,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 179.0) internal successors, (2685), 15 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:35,065 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 179.0) internal successors, (2685), 15 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:35,066 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 118 flow. Second operand 14 states and 1333 transitions. [2023-11-06 22:23:35,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 134 transitions, 804 flow [2023-11-06 22:23:35,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 134 transitions, 759 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:23:35,080 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 379 flow [2023-11-06 22:23:35,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=379, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2023-11-06 22:23:35,083 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-11-06 22:23:35,083 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 379 flow [2023-11-06 22:23:35,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.4) internal successors, (874), 10 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:35,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:35,085 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:35,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:23:35,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:23:35,292 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:23:35,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:35,293 INFO L85 PathProgramCache]: Analyzing trace with hash -778947176, now seen corresponding path program 1 times [2023-11-06 22:23:35,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:35,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794729297] [2023-11-06 22:23:35,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:35,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:35,423 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 22:23:35,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:35,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794729297] [2023-11-06 22:23:35,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794729297] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:23:35,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318836744] [2023-11-06 22:23:35,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:35,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:23:35,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:23:35,432 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:23:35,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:23:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:35,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:23:35,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:35,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:35,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:23:35,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318836744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:35,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:23:35,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-11-06 22:23:35,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478255713] [2023-11-06 22:23:35,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:35,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:23:35,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:35,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:23:35,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:23:35,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 179 [2023-11-06 22:23:35,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 379 flow. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:35,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:35,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 179 [2023-11-06 22:23:35,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:35,801 INFO L124 PetriNetUnfolderBase]: 162/479 cut-off events. [2023-11-06 22:23:35,801 INFO L125 PetriNetUnfolderBase]: For 913/913 co-relation queries the response was YES. [2023-11-06 22:23:35,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1672 conditions, 479 events. 162/479 cut-off events. For 913/913 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2394 event pairs, 69 based on Foata normal form. 70/501 useless extension candidates. Maximal degree in co-relation 1649. Up to 321 conditions per place. [2023-11-06 22:23:35,809 INFO L140 encePairwiseOnDemand]: 174/179 looper letters, 39 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2023-11-06 22:23:35,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 439 flow [2023-11-06 22:23:35,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:23:35,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:23:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 382 transitions. [2023-11-06 22:23:35,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335195530726257 [2023-11-06 22:23:35,813 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 382 transitions. [2023-11-06 22:23:35,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 382 transitions. [2023-11-06 22:23:35,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:35,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 382 transitions. [2023-11-06 22:23:35,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:35,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 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 22:23:35,818 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 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 22:23:35,819 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 379 flow. Second operand 4 states and 382 transitions. [2023-11-06 22:23:35,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 439 flow [2023-11-06 22:23:35,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 56 transitions, 418 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 22:23:35,853 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 301 flow [2023-11-06 22:23:35,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-11-06 22:23:35,856 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 25 predicate places. [2023-11-06 22:23:35,856 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 301 flow [2023-11-06 22:23:35,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:35,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:35,857 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:23:35,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:23:36,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:23:36,064 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_function_mutexErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:23:36,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:36,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1243914335, now seen corresponding path program 1 times [2023-11-06 22:23:36,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:36,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097428107] [2023-11-06 22:23:36,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:36,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:23:36,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:36,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097428107] [2023-11-06 22:23:36,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097428107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:36,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:36,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:23:36,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115906622] [2023-11-06 22:23:36,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:36,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:23:36,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:36,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:23:36,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:23:36,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 179 [2023-11-06 22:23:36,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:36,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:36,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 179 [2023-11-06 22:23:36,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:36,236 INFO L124 PetriNetUnfolderBase]: 144/415 cut-off events. [2023-11-06 22:23:36,236 INFO L125 PetriNetUnfolderBase]: For 736/736 co-relation queries the response was YES. [2023-11-06 22:23:36,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 415 events. 144/415 cut-off events. For 736/736 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2070 event pairs, 38 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 1427. Up to 224 conditions per place. [2023-11-06 22:23:36,241 INFO L140 encePairwiseOnDemand]: 175/179 looper letters, 39 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-11-06 22:23:36,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 418 flow [2023-11-06 22:23:36,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:23:36,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:23:36,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-11-06 22:23:36,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5623836126629422 [2023-11-06 22:23:36,244 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-11-06 22:23:36,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-11-06 22:23:36,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:36,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-11-06 22:23:36,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:36,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:36,247 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:36,248 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 301 flow. Second operand 3 states and 302 transitions. [2023-11-06 22:23:36,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 418 flow [2023-11-06 22:23:36,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 417 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:23:36,255 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 312 flow [2023-11-06 22:23:36,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2023-11-06 22:23:36,256 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 26 predicate places. [2023-11-06 22:23:36,256 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 312 flow [2023-11-06 22:23:36,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:36,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:36,257 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:23:36,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:23:36,257 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:23:36,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:36,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1243914336, now seen corresponding path program 1 times [2023-11-06 22:23:36,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:36,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017158621] [2023-11-06 22:23:36,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:36,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:36,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:36,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017158621] [2023-11-06 22:23:36,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017158621] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:23:36,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234757951] [2023-11-06 22:23:36,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:36,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:23:36,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:23:36,317 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:23:36,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:23:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:36,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:23:36,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:36,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:23:36,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234757951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:36,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:23:36,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 22:23:36,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211142441] [2023-11-06 22:23:36,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:36,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:23:36,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:36,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:23:36,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:23:36,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 179 [2023-11-06 22:23:36,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:36,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:36,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 179 [2023-11-06 22:23:36,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:36,591 INFO L124 PetriNetUnfolderBase]: 137/397 cut-off events. [2023-11-06 22:23:36,591 INFO L125 PetriNetUnfolderBase]: For 887/887 co-relation queries the response was YES. [2023-11-06 22:23:36,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 397 events. 137/397 cut-off events. For 887/887 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1851 event pairs, 36 based on Foata normal form. 10/383 useless extension candidates. Maximal degree in co-relation 1508. Up to 216 conditions per place. [2023-11-06 22:23:36,597 INFO L140 encePairwiseOnDemand]: 176/179 looper letters, 51 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-11-06 22:23:36,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 64 transitions, 497 flow [2023-11-06 22:23:36,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:23:36,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:23:36,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 408 transitions. [2023-11-06 22:23:36,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698324022346368 [2023-11-06 22:23:36,600 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 408 transitions. [2023-11-06 22:23:36,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 408 transitions. [2023-11-06 22:23:36,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:36,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 408 transitions. [2023-11-06 22:23:36,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:36,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 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 22:23:36,605 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 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 22:23:36,605 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 312 flow. Second operand 4 states and 408 transitions. [2023-11-06 22:23:36,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 64 transitions, 497 flow [2023-11-06 22:23:36,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:23:36,614 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 307 flow [2023-11-06 22:23:36,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2023-11-06 22:23:36,615 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-11-06 22:23:36,615 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 307 flow [2023-11-06 22:23:36,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:36,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:36,616 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:23:36,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:23:36,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:23:36,823 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:23:36,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:36,824 INFO L85 PathProgramCache]: Analyzing trace with hash 300582448, now seen corresponding path program 1 times [2023-11-06 22:23:36,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:36,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279870358] [2023-11-06 22:23:36,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:36,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:36,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:36,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279870358] [2023-11-06 22:23:36,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279870358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:36,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:36,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:23:36,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445635219] [2023-11-06 22:23:36,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:36,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:23:36,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:36,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:23:36,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:23:36,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 179 [2023-11-06 22:23:36,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:36,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:36,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 179 [2023-11-06 22:23:36,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:37,009 INFO L124 PetriNetUnfolderBase]: 126/366 cut-off events. [2023-11-06 22:23:37,010 INFO L125 PetriNetUnfolderBase]: For 936/936 co-relation queries the response was YES. [2023-11-06 22:23:37,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 366 events. 126/366 cut-off events. For 936/936 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1654 event pairs, 25 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 1347. Up to 294 conditions per place. [2023-11-06 22:23:37,014 INFO L140 encePairwiseOnDemand]: 177/179 looper letters, 46 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-11-06 22:23:37,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 497 flow [2023-11-06 22:23:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:23:37,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:23:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-11-06 22:23:37,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5512104283054003 [2023-11-06 22:23:37,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-11-06 22:23:37,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-11-06 22:23:37,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:37,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-11-06 22:23:37,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:37,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:37,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:37,021 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 307 flow. Second operand 3 states and 296 transitions. [2023-11-06 22:23:37,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 497 flow [2023-11-06 22:23:37,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 491 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:23:37,030 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 301 flow [2023-11-06 22:23:37,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=301, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-11-06 22:23:37,031 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 26 predicate places. [2023-11-06 22:23:37,032 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 301 flow [2023-11-06 22:23:37,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:37,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:37,032 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:23:37,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:23:37,033 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:23:37,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:37,033 INFO L85 PathProgramCache]: Analyzing trace with hash 300582449, now seen corresponding path program 1 times [2023-11-06 22:23:37,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:37,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748816604] [2023-11-06 22:23:37,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:37,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:23:37,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:37,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748816604] [2023-11-06 22:23:37,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748816604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:37,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:37,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:23:37,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32658051] [2023-11-06 22:23:37,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:37,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:23:37,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:37,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:23:37,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:23:37,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 179 [2023-11-06 22:23:37,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:37,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:37,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 179 [2023-11-06 22:23:37,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:37,197 INFO L124 PetriNetUnfolderBase]: 112/323 cut-off events. [2023-11-06 22:23:37,197 INFO L125 PetriNetUnfolderBase]: For 784/784 co-relation queries the response was YES. [2023-11-06 22:23:37,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 323 events. 112/323 cut-off events. For 784/784 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1372 event pairs, 38 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 1154. Up to 156 conditions per place. [2023-11-06 22:23:37,202 INFO L140 encePairwiseOnDemand]: 175/179 looper letters, 43 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2023-11-06 22:23:37,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 58 transitions, 491 flow [2023-11-06 22:23:37,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:23:37,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:23:37,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 293 transitions. [2023-11-06 22:23:37,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5456238361266295 [2023-11-06 22:23:37,205 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 293 transitions. [2023-11-06 22:23:37,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 293 transitions. [2023-11-06 22:23:37,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:37,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 293 transitions. [2023-11-06 22:23:37,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:37,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:37,209 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:37,210 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 301 flow. Second operand 3 states and 293 transitions. [2023-11-06 22:23:37,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 58 transitions, 491 flow [2023-11-06 22:23:37,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 490 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:23:37,218 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 312 flow [2023-11-06 22:23:37,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2023-11-06 22:23:37,220 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-11-06 22:23:37,220 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 312 flow [2023-11-06 22:23:37,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:37,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:37,221 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1] [2023-11-06 22:23:37,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:23:37,221 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:23:37,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:37,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1863929303, now seen corresponding path program 2 times [2023-11-06 22:23:37,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:37,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295291356] [2023-11-06 22:23:37,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:37,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:37,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:37,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295291356] [2023-11-06 22:23:37,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295291356] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:23:37,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027383286] [2023-11-06 22:23:37,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:23:37,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:23:37,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:23:37,483 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:23:37,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:23:37,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:23:37,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:23:37,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:23:37,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:37,667 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:37,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:23:37,780 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:37,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027383286] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:23:37,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:23:37,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-06 22:23:37,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794438950] [2023-11-06 22:23:37,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:23:37,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:23:37,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:37,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:23:37,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:23:37,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 179 [2023-11-06 22:23:37,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 312 flow. Second operand has 18 states, 18 states have (on average 87.22222222222223) internal successors, (1570), 18 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:37,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:37,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 179 [2023-11-06 22:23:37,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:39,162 INFO L124 PetriNetUnfolderBase]: 458/1169 cut-off events. [2023-11-06 22:23:39,163 INFO L125 PetriNetUnfolderBase]: For 5094/5094 co-relation queries the response was YES. [2023-11-06 22:23:39,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4513 conditions, 1169 events. 458/1169 cut-off events. For 5094/5094 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5751 event pairs, 80 based on Foata normal form. 112/1281 useless extension candidates. Maximal degree in co-relation 4487. Up to 252 conditions per place. [2023-11-06 22:23:39,178 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 302 selfloop transitions, 83 changer transitions 0/385 dead transitions. [2023-11-06 22:23:39,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 385 transitions, 3071 flow [2023-11-06 22:23:39,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-06 22:23:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-11-06 22:23:39,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3721 transitions. [2023-11-06 22:23:39,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5330181922360693 [2023-11-06 22:23:39,196 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3721 transitions. [2023-11-06 22:23:39,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3721 transitions. [2023-11-06 22:23:39,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:39,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3721 transitions. [2023-11-06 22:23:39,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 95.41025641025641) internal successors, (3721), 39 states have internal predecessors, (3721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:39,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 179.0) internal successors, (7160), 40 states have internal predecessors, (7160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:39,241 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 179.0) internal successors, (7160), 40 states have internal predecessors, (7160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:39,241 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 312 flow. Second operand 39 states and 3721 transitions. [2023-11-06 22:23:39,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 385 transitions, 3071 flow [2023-11-06 22:23:39,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 385 transitions, 2991 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:23:39,267 INFO L231 Difference]: Finished difference. Result has 118 places, 111 transitions, 1200 flow [2023-11-06 22:23:39,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1200, PETRI_PLACES=118, PETRI_TRANSITIONS=111} [2023-11-06 22:23:39,268 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 93 predicate places. [2023-11-06 22:23:39,268 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 111 transitions, 1200 flow [2023-11-06 22:23:39,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 87.22222222222223) internal successors, (1570), 18 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:39,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:39,270 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1] [2023-11-06 22:23:39,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:23:39,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:23:39,477 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:23:39,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:39,477 INFO L85 PathProgramCache]: Analyzing trace with hash 236332115, now seen corresponding path program 3 times [2023-11-06 22:23:39,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:39,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108469704] [2023-11-06 22:23:39,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:39,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:40,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:40,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108469704] [2023-11-06 22:23:40,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108469704] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:23:40,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818908797] [2023-11-06 22:23:40,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:23:40,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:23:40,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:23:40,089 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:23:40,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:23:40,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-06 22:23:40,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:23:40,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:23:40,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:40,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:23:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:40,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818908797] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:23:40,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:23:40,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-11-06 22:23:40,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000930903] [2023-11-06 22:23:40,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:23:40,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-06 22:23:40,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:40,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-06 22:23:40,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 22:23:40,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 179 [2023-11-06 22:23:40,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 111 transitions, 1200 flow. Second operand has 34 states, 34 states have (on average 87.11764705882354) internal successors, (2962), 34 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:40,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:40,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 179 [2023-11-06 22:23:40,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:47,610 INFO L124 PetriNetUnfolderBase]: 1744/4443 cut-off events. [2023-11-06 22:23:47,611 INFO L125 PetriNetUnfolderBase]: For 142935/142935 co-relation queries the response was YES. [2023-11-06 22:23:47,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19357 conditions, 4443 events. 1744/4443 cut-off events. For 142935/142935 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 27374 event pairs, 253 based on Foata normal form. 480/4923 useless extension candidates. Maximal degree in co-relation 19300. Up to 1062 conditions per place. [2023-11-06 22:23:47,685 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 1092 selfloop transitions, 348 changer transitions 0/1440 dead transitions. [2023-11-06 22:23:47,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 1440 transitions, 13735 flow [2023-11-06 22:23:47,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-11-06 22:23:47,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2023-11-06 22:23:47,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 13665 transitions. [2023-11-06 22:23:47,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338516232370981 [2023-11-06 22:23:47,724 INFO L72 ComplementDD]: Start complementDD. Operand 143 states and 13665 transitions. [2023-11-06 22:23:47,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 143 states and 13665 transitions. [2023-11-06 22:23:47,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:47,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 143 states and 13665 transitions. [2023-11-06 22:23:47,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 144 states, 143 states have (on average 95.55944055944056) internal successors, (13665), 143 states have internal predecessors, (13665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:47,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 144 states, 144 states have (on average 179.0) internal successors, (25776), 144 states have internal predecessors, (25776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:47,942 INFO L81 ComplementDD]: Finished complementDD. Result has 144 states, 144 states have (on average 179.0) internal successors, (25776), 144 states have internal predecessors, (25776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:47,942 INFO L175 Difference]: Start difference. First operand has 118 places, 111 transitions, 1200 flow. Second operand 143 states and 13665 transitions. [2023-11-06 22:23:47,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 1440 transitions, 13735 flow [2023-11-06 22:23:48,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 1440 transitions, 13542 flow, removed 89 selfloop flow, removed 5 redundant places. [2023-11-06 22:23:48,239 INFO L231 Difference]: Finished difference. Result has 364 places, 390 transitions, 5687 flow [2023-11-06 22:23:48,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=143, PETRI_FLOW=5687, PETRI_PLACES=364, PETRI_TRANSITIONS=390} [2023-11-06 22:23:48,243 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 339 predicate places. [2023-11-06 22:23:48,243 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 390 transitions, 5687 flow [2023-11-06 22:23:48,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 87.11764705882354) internal successors, (2962), 34 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:48,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:48,245 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1] [2023-11-06 22:23:48,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 22:23:48,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:23:48,453 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:23:48,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:48,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1100114251, now seen corresponding path program 4 times [2023-11-06 22:23:48,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:48,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982994305] [2023-11-06 22:23:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:48,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:50,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:50,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982994305] [2023-11-06 22:23:50,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982994305] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:23:50,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408372337] [2023-11-06 22:23:50,709 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:23:50,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:23:50,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:23:50,710 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:23:50,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:23:50,916 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:23:50,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:23:50,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-06 22:23:50,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:51,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:23:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:52,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408372337] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:23:52,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:23:52,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 64 [2023-11-06 22:23:52,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601210984] [2023-11-06 22:23:52,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:23:52,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-11-06 22:23:52,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:52,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-11-06 22:23:52,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2023-11-06 22:23:52,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 179 [2023-11-06 22:23:52,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 390 transitions, 5687 flow. Second operand has 66 states, 66 states have (on average 87.06060606060606) internal successors, (5746), 66 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:52,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:52,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 179 [2023-11-06 22:23:52,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:48,917 INFO L124 PetriNetUnfolderBase]: 7076/18039 cut-off events. [2023-11-06 22:24:48,918 INFO L125 PetriNetUnfolderBase]: For 8950311/8950311 co-relation queries the response was YES. [2023-11-06 22:24:49,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92711 conditions, 18039 events. 7076/18039 cut-off events. For 8950311/8950311 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 135056 event pairs, 908 based on Foata normal form. 2112/20151 useless extension candidates. Maximal degree in co-relation 92544. Up to 4520 conditions per place. [2023-11-06 22:24:49,473 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 4114 selfloop transitions, 1493 changer transitions 0/5607 dead transitions. [2023-11-06 22:24:49,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 906 places, 5607 transitions, 67132 flow [2023-11-06 22:24:49,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 543 states. [2023-11-06 22:24:49,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2023-11-06 22:24:49,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 51889 transitions. [2023-11-06 22:24:49,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338539255326811 [2023-11-06 22:24:49,599 INFO L72 ComplementDD]: Start complementDD. Operand 543 states and 51889 transitions. [2023-11-06 22:24:49,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 543 states and 51889 transitions. [2023-11-06 22:24:49,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:49,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 543 states and 51889 transitions. [2023-11-06 22:24:49,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 544 states, 543 states have (on average 95.55985267034991) internal successors, (51889), 543 states have internal predecessors, (51889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:50,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 544 states, 544 states have (on average 179.0) internal successors, (97376), 544 states have internal predecessors, (97376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:50,213 INFO L81 ComplementDD]: Finished complementDD. Result has 544 states, 544 states have (on average 179.0) internal successors, (97376), 544 states have internal predecessors, (97376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:50,214 INFO L175 Difference]: Start difference. First operand has 364 places, 390 transitions, 5687 flow. Second operand 543 states and 51889 transitions. [2023-11-06 22:24:50,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 906 places, 5607 transitions, 67132 flow [2023-11-06 22:25:02,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 884 places, 5607 transitions, 66309 flow, removed 375 selfloop flow, removed 22 redundant places. [2023-11-06 22:25:02,409 INFO L231 Difference]: Finished difference. Result has 1297 places, 1567 transitions, 28718 flow [2023-11-06 22:25:02,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=5458, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=543, PETRI_FLOW=28718, PETRI_PLACES=1297, PETRI_TRANSITIONS=1567} [2023-11-06 22:25:02,411 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1272 predicate places. [2023-11-06 22:25:02,411 INFO L495 AbstractCegarLoop]: Abstraction has has 1297 places, 1567 transitions, 28718 flow [2023-11-06 22:25:02,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 87.06060606060606) internal successors, (5746), 66 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:02,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:02,413 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 1, 1, 1, 1] [2023-11-06 22:25:02,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-06 22:25:02,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:25:02,632 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:25:02,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:02,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1020613435, now seen corresponding path program 5 times [2023-11-06 22:25:02,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:02,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949301089] [2023-11-06 22:25:02,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:02,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:07,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:07,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949301089] [2023-11-06 22:25:07,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949301089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:07,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502493926] [2023-11-06 22:25:07,595 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:25:07,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:07,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:07,596 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:07,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82a45fb-4256-4d05-86f2-4b1a97b3816c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:25:08,006 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2023-11-06 22:25:08,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:08,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-06 22:25:08,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 1921 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:25:09,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:25:09,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502493926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:09,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:25:09,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [63] total 96 [2023-11-06 22:25:09,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41508635] [2023-11-06 22:25:09,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:09,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-06 22:25:09,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:09,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-06 22:25:09,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1615, Invalid=7505, Unknown=0, NotChecked=0, Total=9120 [2023-11-06 22:25:09,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 179 [2023-11-06 22:25:09,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1297 places, 1567 transitions, 28718 flow. Second operand has 33 states, 33 states have (on average 95.9090909090909) internal successors, (3165), 33 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:09,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:09,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 179 [2023-11-06 22:25:09,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand