./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/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_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:58:29,504 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:58:29,575 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:58:29,579 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:58:29,580 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:58:29,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:58:29,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:58:29,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:58:29,624 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:58:29,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:58:29,631 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:58:29,632 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:58:29,632 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:58:29,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:58:29,635 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:58:29,635 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:58:29,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:58:29,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:58:29,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:58:29,637 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:58:29,638 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:58:29,639 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:58:29,639 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:58:29,640 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:58:29,640 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:58:29,641 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:58:29,641 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:58:29,641 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:58:29,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:58:29,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:58:29,643 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:58:29,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:58:29,644 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:58:29,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:58:29,644 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:58:29,644 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:58:29,645 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:58:29,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:58:29,645 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:58:29,645 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_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa [2023-11-06 22:58:29,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:58:29,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:58:29,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:58:29,959 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:58:29,959 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:58:29,961 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2023-11-06 22:58:33,084 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:58:33,444 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:58:33,445 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2023-11-06 22:58:33,467 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/data/583a0f12d/181bf8dfeea3477ea538189d0e424848/FLAG71c7660dd [2023-11-06 22:58:33,483 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/data/583a0f12d/181bf8dfeea3477ea538189d0e424848 [2023-11-06 22:58:33,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:58:33,488 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:58:33,489 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:58:33,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:58:33,496 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:58:33,496 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:58:33" (1/1) ... [2023-11-06 22:58:33,498 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a3111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33, skipping insertion in model container [2023-11-06 22:58:33,498 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:58:33" (1/1) ... [2023-11-06 22:58:33,562 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:58:34,190 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2023-11-06 22:58:34,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:58:34,341 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:58:34,393 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2023-11-06 22:58:34,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:58:34,536 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:58:34,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:34 WrapperNode [2023-11-06 22:58:34,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:58:34,538 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:58:34,539 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:58:34,539 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:58:34,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:34" (1/1) ... [2023-11-06 22:58:34,570 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:34" (1/1) ... [2023-11-06 22:58:34,605 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 232 [2023-11-06 22:58:34,605 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:58:34,606 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:58:34,607 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:58:34,607 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:58:34,617 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:34" (1/1) ... [2023-11-06 22:58:34,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:34" (1/1) ... [2023-11-06 22:58:34,624 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:34" (1/1) ... [2023-11-06 22:58:34,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:34" (1/1) ... [2023-11-06 22:58:34,638 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:34" (1/1) ... [2023-11-06 22:58:34,644 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:34" (1/1) ... [2023-11-06 22:58:34,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:34" (1/1) ... [2023-11-06 22:58:34,650 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:34" (1/1) ... [2023-11-06 22:58:34,655 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:58:34,657 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:58:34,657 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:58:34,657 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:58:34,658 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:34" (1/1) ... [2023-11-06 22:58:34,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:58:34,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:34,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:58:34,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:58:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:58:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:58:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-06 22:58:34,768 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-06 22:58:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:58:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:58:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-06 22:58:34,769 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-06 22:58:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:58:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:58:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:58:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:58:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:58:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:58:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:58:34,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:58:34,776 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 22:58:34,989 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:58:34,991 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:58:35,524 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:58:35,538 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:58:35,543 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-06 22:58:35,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:35 BoogieIcfgContainer [2023-11-06 22:58:35,547 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:58:35,551 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:58:35,554 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:58:35,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:58:35,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:58:33" (1/3) ... [2023-11-06 22:58:35,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff603f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:58:35, skipping insertion in model container [2023-11-06 22:58:35,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:34" (2/3) ... [2023-11-06 22:58:35,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff603f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:58:35, skipping insertion in model container [2023-11-06 22:58:35,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:35" (3/3) ... [2023-11-06 22:58:35,566 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2023-11-06 22:58:35,576 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:58:35,589 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:58:35,589 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:58:35,589 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:58:35,704 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 22:58:35,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 243 transitions, 506 flow [2023-11-06 22:58:35,933 INFO L124 PetriNetUnfolderBase]: 54/458 cut-off events. [2023-11-06 22:58:35,933 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:58:35,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 458 events. 54/458 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1861 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2023-11-06 22:58:35,946 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 243 transitions, 506 flow [2023-11-06 22:58:35,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 241 transitions, 496 flow [2023-11-06 22:58:35,959 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:58:35,970 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 241 transitions, 496 flow [2023-11-06 22:58:35,973 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 241 transitions, 496 flow [2023-11-06 22:58:35,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 241 transitions, 496 flow [2023-11-06 22:58:36,081 INFO L124 PetriNetUnfolderBase]: 50/446 cut-off events. [2023-11-06 22:58:36,081 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:58:36,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 446 events. 50/446 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1788 event pairs, 0 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 220. Up to 8 conditions per place. [2023-11-06 22:58:36,104 INFO L119 LiptonReduction]: Number of co-enabled transitions 18130 [2023-11-06 22:58:43,695 INFO L134 LiptonReduction]: Checked pairs total: 25803 [2023-11-06 22:58:43,696 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-11-06 22:58:43,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:58:43,740 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;@47aef240, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:58:43,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 22:58:43,753 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:58:43,753 INFO L124 PetriNetUnfolderBase]: 1/27 cut-off events. [2023-11-06 22:58:43,753 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:58:43,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:43,754 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-06 22:58:43,755 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:58:43,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:43,761 INFO L85 PathProgramCache]: Analyzing trace with hash -72583712, now seen corresponding path program 1 times [2023-11-06 22:58:43,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:43,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555683789] [2023-11-06 22:58:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:43,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:44,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:58:44,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:44,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555683789] [2023-11-06 22:58:44,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555683789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:44,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:44,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:58:44,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808979842] [2023-11-06 22:58:44,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:44,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:44,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:44,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:44,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:44,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 441 [2023-11-06 22:58:44,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 65 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:44,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:44,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 441 [2023-11-06 22:58:44,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:45,190 INFO L124 PetriNetUnfolderBase]: 2993/5197 cut-off events. [2023-11-06 22:58:45,190 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2023-11-06 22:58:45,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9931 conditions, 5197 events. 2993/5197 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30424 event pairs, 2770 based on Foata normal form. 368/4687 useless extension candidates. Maximal degree in co-relation 8968. Up to 4670 conditions per place. [2023-11-06 22:58:45,224 INFO L140 encePairwiseOnDemand]: 427/441 looper letters, 45 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-11-06 22:58:45,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 218 flow [2023-11-06 22:58:45,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:45,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:45,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 698 transitions. [2023-11-06 22:58:45,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527588813303099 [2023-11-06 22:58:45,249 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 698 transitions. [2023-11-06 22:58:45,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 698 transitions. [2023-11-06 22:58:45,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:45,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 698 transitions. [2023-11-06 22:58:45,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:45,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:45,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:45,278 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 144 flow. Second operand 3 states and 698 transitions. [2023-11-06 22:58:45,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 218 flow [2023-11-06 22:58:45,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 218 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:58:45,289 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 134 flow [2023-11-06 22:58:45,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-11-06 22:58:45,296 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-11-06 22:58:45,296 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 134 flow [2023-11-06 22:58:45,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:45,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:45,298 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:45,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:58:45,299 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:58:45,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:45,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1970431524, now seen corresponding path program 1 times [2023-11-06 22:58:45,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:45,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007147067] [2023-11-06 22:58:45,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:45,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:45,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:58:45,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:45,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007147067] [2023-11-06 22:58:45,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007147067] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:45,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572578212] [2023-11-06 22:58:45,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:45,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:45,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:45,465 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:45,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:58:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:45,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:58:45,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:58:45,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:45,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:58:45,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572578212] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:58:45,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:58:45,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:58:45,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947802328] [2023-11-06 22:58:45,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:58:45,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:58:45,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:45,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:58:45,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:58:45,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 441 [2023-11-06 22:58:45,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 134 flow. Second operand has 7 states, 7 states have (on average 213.57142857142858) internal successors, (1495), 7 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:45,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:45,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 441 [2023-11-06 22:58:45,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:46,741 INFO L124 PetriNetUnfolderBase]: 2993/5200 cut-off events. [2023-11-06 22:58:46,742 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2023-11-06 22:58:46,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9947 conditions, 5200 events. 2993/5200 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30405 event pairs, 2770 based on Foata normal form. 0/4322 useless extension candidates. Maximal degree in co-relation 9934. Up to 4670 conditions per place. [2023-11-06 22:58:46,774 INFO L140 encePairwiseOnDemand]: 438/441 looper letters, 45 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2023-11-06 22:58:46,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 246 flow [2023-11-06 22:58:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:58:46,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:58:46,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1325 transitions. [2023-11-06 22:58:46,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.500755857898715 [2023-11-06 22:58:46,780 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1325 transitions. [2023-11-06 22:58:46,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1325 transitions. [2023-11-06 22:58:46,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:46,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1325 transitions. [2023-11-06 22:58:46,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 220.83333333333334) internal successors, (1325), 6 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:46,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 441.0) internal successors, (3087), 7 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:46,796 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 441.0) internal successors, (3087), 7 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:46,796 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 134 flow. Second operand 6 states and 1325 transitions. [2023-11-06 22:58:46,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 246 flow [2023-11-06 22:58:46,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 242 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:58:46,800 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 166 flow [2023-11-06 22:58:46,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=166, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-11-06 22:58:46,801 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2023-11-06 22:58:46,802 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 166 flow [2023-11-06 22:58:46,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 213.57142857142858) internal successors, (1495), 7 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:46,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:46,804 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-06 22:58:46,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:47,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:47,010 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:58:47,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:47,011 INFO L85 PathProgramCache]: Analyzing trace with hash 902325984, now seen corresponding path program 2 times [2023-11-06 22:58:47,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:47,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256715171] [2023-11-06 22:58:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:47,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:47,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:58:47,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:47,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256715171] [2023-11-06 22:58:47,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256715171] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:47,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146794138] [2023-11-06 22:58:47,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:58:47,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:47,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:47,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:47,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:58:47,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:58:47,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:58:47,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:58:47,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:47,590 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:58:47,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:47,663 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:58:47,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146794138] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:58:47,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:58:47,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:58:47,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495955773] [2023-11-06 22:58:47,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:58:47,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:58:47,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:47,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:58:47,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:47,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 441 [2023-11-06 22:58:47,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 166 flow. Second operand has 13 states, 13 states have (on average 213.30769230769232) internal successors, (2773), 13 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:47,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:47,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 441 [2023-11-06 22:58:47,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:48,719 INFO L124 PetriNetUnfolderBase]: 2993/5206 cut-off events. [2023-11-06 22:58:48,719 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-11-06 22:58:48,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9984 conditions, 5206 events. 2993/5206 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30430 event pairs, 2770 based on Foata normal form. 6/4335 useless extension candidates. Maximal degree in co-relation 9925. Up to 4670 conditions per place. [2023-11-06 22:58:48,758 INFO L140 encePairwiseOnDemand]: 438/441 looper letters, 45 selfloop transitions, 11 changer transitions 0/64 dead transitions. [2023-11-06 22:58:48,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 314 flow [2023-11-06 22:58:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:58:48,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:58:48,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2606 transitions. [2023-11-06 22:58:48,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924414210128496 [2023-11-06 22:58:48,769 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2606 transitions. [2023-11-06 22:58:48,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2606 transitions. [2023-11-06 22:58:48,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:48,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2606 transitions. [2023-11-06 22:58:48,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 217.16666666666666) internal successors, (2606), 12 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:48,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 441.0) internal successors, (5733), 13 states have internal predecessors, (5733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:48,804 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 441.0) internal successors, (5733), 13 states have internal predecessors, (5733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:48,804 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 166 flow. Second operand 12 states and 2606 transitions. [2023-11-06 22:58:48,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 314 flow [2023-11-06 22:58:48,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 64 transitions, 300 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 22:58:48,809 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 236 flow [2023-11-06 22:58:48,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=236, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2023-11-06 22:58:48,811 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2023-11-06 22:58:48,811 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 236 flow [2023-11-06 22:58:48,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 213.30769230769232) internal successors, (2773), 13 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:48,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:48,814 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-06 22:58:48,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:49,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:49,020 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:58:49,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:49,021 INFO L85 PathProgramCache]: Analyzing trace with hash 250699872, now seen corresponding path program 3 times [2023-11-06 22:58:49,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:49,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670204885] [2023-11-06 22:58:49,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:49,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:58:49,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:49,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670204885] [2023-11-06 22:58:49,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670204885] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:49,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537006056] [2023-11-06 22:58:49,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:58:49,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:49,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:49,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:49,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:02:14,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-06 23:02:14,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:02:14,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 23:02:14,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:02:14,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:02:15,015 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:02:15,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537006056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:02:15,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:02:15,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-06 23:02:15,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818875889] [2023-11-06 23:02:15,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:02:15,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-06 23:02:15,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:15,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-06 23:02:15,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-06 23:02:15,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 441 [2023-11-06 23:02:15,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 236 flow. Second operand has 25 states, 25 states have (on average 213.16) internal successors, (5329), 25 states have internal predecessors, (5329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:15,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:15,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 441 [2023-11-06 23:02:15,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:16,679 INFO L124 PetriNetUnfolderBase]: 2993/5218 cut-off events. [2023-11-06 23:02:16,679 INFO L125 PetriNetUnfolderBase]: For 556/556 co-relation queries the response was YES. [2023-11-06 23:02:16,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10068 conditions, 5218 events. 2993/5218 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30425 event pairs, 2770 based on Foata normal form. 12/4353 useless extension candidates. Maximal degree in co-relation 9931. Up to 4670 conditions per place. [2023-11-06 23:02:16,745 INFO L140 encePairwiseOnDemand]: 438/441 looper letters, 45 selfloop transitions, 23 changer transitions 0/76 dead transitions. [2023-11-06 23:02:16,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 76 transitions, 468 flow [2023-11-06 23:02:16,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 23:02:16,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 23:02:16,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5168 transitions. [2023-11-06 23:02:16,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48828420256991684 [2023-11-06 23:02:16,779 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5168 transitions. [2023-11-06 23:02:16,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5168 transitions. [2023-11-06 23:02:16,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:16,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5168 transitions. [2023-11-06 23:02:16,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 215.33333333333334) internal successors, (5168), 24 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:16,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 441.0) internal successors, (11025), 25 states have internal predecessors, (11025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:16,839 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 441.0) internal successors, (11025), 25 states have internal predecessors, (11025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:16,839 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 236 flow. Second operand 24 states and 5168 transitions. [2023-11-06 23:02:16,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 76 transitions, 468 flow [2023-11-06 23:02:16,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 76 transitions, 396 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-11-06 23:02:16,853 INFO L231 Difference]: Finished difference. Result has 110 places, 76 transitions, 356 flow [2023-11-06 23:02:16,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=356, PETRI_PLACES=110, PETRI_TRANSITIONS=76} [2023-11-06 23:02:16,856 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2023-11-06 23:02:16,856 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 76 transitions, 356 flow [2023-11-06 23:02:16,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 213.16) internal successors, (5329), 25 states have internal predecessors, (5329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:16,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:16,861 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-11-06 23:02:16,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:02:17,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:17,084 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:17,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:17,084 INFO L85 PathProgramCache]: Analyzing trace with hash -589827232, now seen corresponding path program 4 times [2023-11-06 23:02:17,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:17,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696469758] [2023-11-06 23:02:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:17,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:19,062 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:02:19,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:19,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696469758] [2023-11-06 23:02:19,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696469758] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:19,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374299442] [2023-11-06 23:02:19,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 23:02:19,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:19,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:19,066 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:19,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:02:19,700 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 23:02:19,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:02:19,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 23:02:19,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:02:19,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:02:20,877 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:02:20,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374299442] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:02:20,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:02:20,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-11-06 23:02:20,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711515012] [2023-11-06 23:02:20,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:02:20,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-06 23:02:20,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:20,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-06 23:02:20,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-11-06 23:02:21,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 441 [2023-11-06 23:02:21,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 76 transitions, 356 flow. Second operand has 49 states, 49 states have (on average 213.08163265306123) internal successors, (10441), 49 states have internal predecessors, (10441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:21,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:21,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 441 [2023-11-06 23:02:21,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:22,862 INFO L124 PetriNetUnfolderBase]: 2993/5242 cut-off events. [2023-11-06 23:02:22,863 INFO L125 PetriNetUnfolderBase]: For 5326/5326 co-relation queries the response was YES. [2023-11-06 23:02:22,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10212 conditions, 5242 events. 2993/5242 cut-off events. For 5326/5326 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30426 event pairs, 2770 based on Foata normal form. 24/4389 useless extension candidates. Maximal degree in co-relation 9943. Up to 4670 conditions per place. [2023-11-06 23:02:22,914 INFO L140 encePairwiseOnDemand]: 438/441 looper letters, 45 selfloop transitions, 47 changer transitions 0/100 dead transitions. [2023-11-06 23:02:22,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 100 transitions, 732 flow [2023-11-06 23:02:22,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-06 23:02:22,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-11-06 23:02:22,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 10292 transitions. [2023-11-06 23:02:23,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4862055933484505 [2023-11-06 23:02:23,063 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 10292 transitions. [2023-11-06 23:02:23,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 10292 transitions. [2023-11-06 23:02:23,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:23,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 10292 transitions. [2023-11-06 23:02:23,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 214.41666666666666) internal successors, (10292), 48 states have internal predecessors, (10292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:23,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 441.0) internal successors, (21609), 49 states have internal predecessors, (21609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:23,148 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 441.0) internal successors, (21609), 49 states have internal predecessors, (21609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:23,148 INFO L175 Difference]: Start difference. First operand has 110 places, 76 transitions, 356 flow. Second operand 48 states and 10292 transitions. [2023-11-06 23:02:23,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 100 transitions, 732 flow [2023-11-06 23:02:23,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 100 transitions, 588 flow, removed 61 selfloop flow, removed 11 redundant places. [2023-11-06 23:02:23,162 INFO L231 Difference]: Finished difference. Result has 170 places, 100 transitions, 596 flow [2023-11-06 23:02:23,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=596, PETRI_PLACES=170, PETRI_TRANSITIONS=100} [2023-11-06 23:02:23,166 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 116 predicate places. [2023-11-06 23:02:23,167 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 100 transitions, 596 flow [2023-11-06 23:02:23,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 213.08163265306123) internal successors, (10441), 49 states have internal predecessors, (10441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:23,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:23,170 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2023-11-06 23:02:23,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:02:23,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:23,379 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:23,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:23,380 INFO L85 PathProgramCache]: Analyzing trace with hash -157836960, now seen corresponding path program 5 times [2023-11-06 23:02:23,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:23,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513800810] [2023-11-06 23:02:23,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:23,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:02:28,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:28,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513800810] [2023-11-06 23:02:28,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513800810] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:28,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322968935] [2023-11-06 23:02:28,848 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 23:02:28,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:28,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:28,850 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:28,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1af7cfa-ddbb-46b0-bab8-9bff86e845c9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process