./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/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_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/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 ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:47:24,584 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:47:24,713 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:47:24,723 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:47:24,724 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:47:24,774 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:47:24,775 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:47:24,775 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:47:24,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:47:24,781 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:47:24,782 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:47:24,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:47:24,783 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:47:24,785 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:47:24,785 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:47:24,786 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:47:24,786 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:47:24,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:47:24,787 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:47:24,787 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:47:24,788 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:47:24,788 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:47:24,789 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:47:24,789 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:47:24,789 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:47:24,790 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:47:24,790 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:47:24,798 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:47:24,798 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:47:24,799 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:47:24,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:47:24,800 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:47:24,801 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:47:24,801 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:47:24,801 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:47:24,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:47:24,802 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:47:24,802 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:47:24,802 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:47:24,802 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:47:24,802 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:47:24,803 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_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb [2023-11-06 22:47:25,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:47:25,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:47:25,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:47:25,174 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:47:25,174 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:47:25,175 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2023-11-06 22:47:28,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:47:28,763 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:47:28,764 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2023-11-06 22:47:28,784 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/data/ada9bd139/7fca5a272a4646e59fe4f9f25d19e5df/FLAGe99611bfe [2023-11-06 22:47:28,800 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/data/ada9bd139/7fca5a272a4646e59fe4f9f25d19e5df [2023-11-06 22:47:28,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:47:28,804 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:47:28,806 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:47:28,806 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:47:28,812 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:47:28,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:47:28" (1/1) ... [2023-11-06 22:47:28,814 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@218bbd01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:28, skipping insertion in model container [2023-11-06 22:47:28,814 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:47:28" (1/1) ... [2023-11-06 22:47:28,882 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:47:29,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:47:29,509 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:47:29,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:47:29,631 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:47:29,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:29 WrapperNode [2023-11-06 22:47:29,632 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:47:29,633 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:47:29,633 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:47:29,634 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:47:29,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:29" (1/1) ... [2023-11-06 22:47:29,663 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:29" (1/1) ... [2023-11-06 22:47:29,692 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 93 [2023-11-06 22:47:29,692 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:47:29,693 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:47:29,693 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:47:29,693 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:47:29,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:29" (1/1) ... [2023-11-06 22:47:29,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:29" (1/1) ... [2023-11-06 22:47:29,716 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:29" (1/1) ... [2023-11-06 22:47:29,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:29" (1/1) ... [2023-11-06 22:47:29,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:29" (1/1) ... [2023-11-06 22:47:29,731 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:29" (1/1) ... [2023-11-06 22:47:29,733 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:29" (1/1) ... [2023-11-06 22:47:29,735 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:29" (1/1) ... [2023-11-06 22:47:29,738 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:47:29,739 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:47:29,739 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:47:29,739 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:47:29,740 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:29" (1/1) ... [2023-11-06 22:47:29,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:47:29,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:29,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:47:29,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:47:29,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:47:29,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:47:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:47:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:47:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:47:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:47:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 22:47:29,860 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 22:47:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:47:29,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:47:29,862 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 22:47:30,018 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:47:30,019 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:47:30,266 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:47:30,274 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:47:30,275 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:47:30,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:47:30 BoogieIcfgContainer [2023-11-06 22:47:30,277 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:47:30,280 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:47:30,280 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:47:30,283 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:47:30,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:47:28" (1/3) ... [2023-11-06 22:47:30,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdcdf32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:47:30, skipping insertion in model container [2023-11-06 22:47:30,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:29" (2/3) ... [2023-11-06 22:47:30,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdcdf32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:47:30, skipping insertion in model container [2023-11-06 22:47:30,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:47:30" (3/3) ... [2023-11-06 22:47:30,286 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_08-tricky_address3.i [2023-11-06 22:47:30,299 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:47:30,310 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:47:30,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-06 22:47:30,312 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:47:30,447 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:47:30,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 105 transitions, 214 flow [2023-11-06 22:47:30,545 INFO L124 PetriNetUnfolderBase]: 4/104 cut-off events. [2023-11-06 22:47:30,545 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:47:30,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 104 events. 4/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-11-06 22:47:30,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 105 transitions, 214 flow [2023-11-06 22:47:30,559 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 104 transitions, 211 flow [2023-11-06 22:47:30,565 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:47:30,575 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 104 transitions, 211 flow [2023-11-06 22:47:30,578 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 104 transitions, 211 flow [2023-11-06 22:47:30,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 104 transitions, 211 flow [2023-11-06 22:47:30,614 INFO L124 PetriNetUnfolderBase]: 4/104 cut-off events. [2023-11-06 22:47:30,614 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:47:30,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 104 events. 4/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-11-06 22:47:30,618 INFO L119 LiptonReduction]: Number of co-enabled transitions 2460 [2023-11-06 22:47:32,802 INFO L134 LiptonReduction]: Checked pairs total: 9208 [2023-11-06 22:47:32,802 INFO L136 LiptonReduction]: Total number of compositions: 76 [2023-11-06 22:47:32,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:47:32,825 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;@1cc305a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:47:32,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-06 22:47:32,831 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:47:32,832 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2023-11-06 22:47:32,832 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:47:32,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:32,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:32,834 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:47:32,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:32,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1189479373, now seen corresponding path program 1 times [2023-11-06 22:47:32,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:32,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173831509] [2023-11-06 22:47:32,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:32,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:33,103 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 22:47:33,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:33,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173831509] [2023-11-06 22:47:33,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173831509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:33,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:33,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:47:33,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770231] [2023-11-06 22:47:33,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:33,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:47:33,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:33,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:47:33,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:33,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 181 [2023-11-06 22:47:33,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:33,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:33,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 181 [2023-11-06 22:47:33,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:33,273 INFO L124 PetriNetUnfolderBase]: 37/165 cut-off events. [2023-11-06 22:47:33,287 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:47:33,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 165 events. 37/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 626 event pairs, 36 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 244. Up to 89 conditions per place. [2023-11-06 22:47:33,291 INFO L140 encePairwiseOnDemand]: 178/181 looper letters, 15 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-11-06 22:47:33,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 111 flow [2023-11-06 22:47:33,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:47:33,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:47:33,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2023-11-06 22:47:33,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5580110497237569 [2023-11-06 22:47:33,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2023-11-06 22:47:33,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2023-11-06 22:47:33,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:33,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2023-11-06 22:47:33,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:33,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:33,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:33,356 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 75 flow. Second operand 3 states and 303 transitions. [2023-11-06 22:47:33,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 111 flow [2023-11-06 22:47:33,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:47:33,362 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 86 flow [2023-11-06 22:47:33,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-11-06 22:47:33,368 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-11-06 22:47:33,368 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 86 flow [2023-11-06 22:47:33,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:33,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:33,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:33,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:47:33,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:47:33,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:33,373 INFO L85 PathProgramCache]: Analyzing trace with hash 534390817, now seen corresponding path program 1 times [2023-11-06 22:47:33,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:33,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642554722] [2023-11-06 22:47:33,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:33,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:33,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:33,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:33,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642554722] [2023-11-06 22:47:33,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642554722] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:33,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381262741] [2023-11-06 22:47:33,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:33,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:33,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:33,539 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:33,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:47:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:33,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:47:33,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:33,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:33,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:33,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381262741] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:47:33,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:47:33,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:47:33,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537808485] [2023-11-06 22:47:33,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:33,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:47:33,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:33,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:47:33,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:47:33,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 181 [2023-11-06 22:47:33,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 95.57142857142857) internal successors, (669), 7 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:33,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:33,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 181 [2023-11-06 22:47:33,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:33,859 INFO L124 PetriNetUnfolderBase]: 37/168 cut-off events. [2023-11-06 22:47:33,860 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:47:33,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 168 events. 37/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 626 event pairs, 36 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 263. Up to 89 conditions per place. [2023-11-06 22:47:33,862 INFO L140 encePairwiseOnDemand]: 178/181 looper letters, 15 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-11-06 22:47:33,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 138 flow [2023-11-06 22:47:33,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:47:33,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:47:33,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 587 transitions. [2023-11-06 22:47:33,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5405156537753223 [2023-11-06 22:47:33,868 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 587 transitions. [2023-11-06 22:47:33,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 587 transitions. [2023-11-06 22:47:33,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:33,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 587 transitions. [2023-11-06 22:47:33,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:33,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:33,880 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:33,880 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 86 flow. Second operand 6 states and 587 transitions. [2023-11-06 22:47:33,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 138 flow [2023-11-06 22:47:33,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 134 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:47:33,883 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 118 flow [2023-11-06 22:47:33,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-11-06 22:47:33,885 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2023-11-06 22:47:33,885 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 118 flow [2023-11-06 22:47:33,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 95.57142857142857) internal successors, (669), 7 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:33,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:33,888 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:33,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:34,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:34,094 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:47:34,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:34,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2133116178, now seen corresponding path program 2 times [2023-11-06 22:47:34,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:34,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790364367] [2023-11-06 22:47:34,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:34,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:47:34,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:34,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790364367] [2023-11-06 22:47:34,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790364367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:34,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:34,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:47:34,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931172796] [2023-11-06 22:47:34,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:34,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:47:34,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:34,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:47:34,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:47:34,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 181 [2023-11-06 22:47:34,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:34,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:34,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 181 [2023-11-06 22:47:34,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:35,106 INFO L124 PetriNetUnfolderBase]: 162/398 cut-off events. [2023-11-06 22:47:35,107 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:47:35,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 398 events. 162/398 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1693 event pairs, 74 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 752. Up to 265 conditions per place. [2023-11-06 22:47:35,112 INFO L140 encePairwiseOnDemand]: 170/181 looper letters, 52 selfloop transitions, 22 changer transitions 0/82 dead transitions. [2023-11-06 22:47:35,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 82 transitions, 350 flow [2023-11-06 22:47:35,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:47:35,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:47:35,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 581 transitions. [2023-11-06 22:47:35,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349907918968693 [2023-11-06 22:47:35,115 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 581 transitions. [2023-11-06 22:47:35,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 581 transitions. [2023-11-06 22:47:35,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:35,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 581 transitions. [2023-11-06 22:47:35,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.83333333333333) internal successors, (581), 6 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:35,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:35,123 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:35,123 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 118 flow. Second operand 6 states and 581 transitions. [2023-11-06 22:47:35,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 82 transitions, 350 flow [2023-11-06 22:47:35,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 82 transitions, 336 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 22:47:35,127 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 254 flow [2023-11-06 22:47:35,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2023-11-06 22:47:35,128 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2023-11-06 22:47:35,128 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 254 flow [2023-11-06 22:47:35,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:35,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:35,130 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:35,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:47:35,130 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:47:35,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:35,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1864450163, now seen corresponding path program 1 times [2023-11-06 22:47:35,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:35,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594692189] [2023-11-06 22:47:35,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:35,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:35,411 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:47:35,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:35,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594692189] [2023-11-06 22:47:35,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594692189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:35,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:35,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:47:35,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239876094] [2023-11-06 22:47:35,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:35,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:47:35,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:35,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:47:35,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:47:35,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 181 [2023-11-06 22:47:35,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:35,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:35,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 181 [2023-11-06 22:47:35,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:35,933 INFO L124 PetriNetUnfolderBase]: 190/476 cut-off events. [2023-11-06 22:47:35,933 INFO L125 PetriNetUnfolderBase]: For 139/142 co-relation queries the response was YES. [2023-11-06 22:47:35,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1113 conditions, 476 events. 190/476 cut-off events. For 139/142 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2235 event pairs, 76 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 1082. Up to 312 conditions per place. [2023-11-06 22:47:35,939 INFO L140 encePairwiseOnDemand]: 170/181 looper letters, 63 selfloop transitions, 26 changer transitions 0/102 dead transitions. [2023-11-06 22:47:35,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 102 transitions, 532 flow [2023-11-06 22:47:35,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:47:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:47:35,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 561 transitions. [2023-11-06 22:47:35,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5165745856353591 [2023-11-06 22:47:35,942 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 561 transitions. [2023-11-06 22:47:35,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 561 transitions. [2023-11-06 22:47:35,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:35,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 561 transitions. [2023-11-06 22:47:35,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:35,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:35,950 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:35,950 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 254 flow. Second operand 6 states and 561 transitions. [2023-11-06 22:47:35,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 102 transitions, 532 flow [2023-11-06 22:47:35,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 102 transitions, 532 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:47:35,957 INFO L231 Difference]: Finished difference. Result has 67 places, 82 transitions, 438 flow [2023-11-06 22:47:35,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=67, PETRI_TRANSITIONS=82} [2023-11-06 22:47:35,958 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2023-11-06 22:47:35,958 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 82 transitions, 438 flow [2023-11-06 22:47:35,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:35,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:35,959 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:35,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:47:35,960 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:47:35,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:35,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1766427568, now seen corresponding path program 1 times [2023-11-06 22:47:35,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:35,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273041657] [2023-11-06 22:47:35,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:35,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:36,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:36,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273041657] [2023-11-06 22:47:36,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273041657] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:36,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981794000] [2023-11-06 22:47:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:36,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:36,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:36,087 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:36,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:47:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:36,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:47:36,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:36,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:36,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981794000] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:47:36,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:47:36,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:47:36,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126640341] [2023-11-06 22:47:36,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:36,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:47:36,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:36,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:47:36,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:47:36,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 181 [2023-11-06 22:47:36,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 82 transitions, 438 flow. Second operand has 13 states, 13 states have (on average 95.46153846153847) internal successors, (1241), 13 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:36,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:36,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 181 [2023-11-06 22:47:36,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:36,471 INFO L124 PetriNetUnfolderBase]: 121/375 cut-off events. [2023-11-06 22:47:36,471 INFO L125 PetriNetUnfolderBase]: For 296/303 co-relation queries the response was YES. [2023-11-06 22:47:36,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 375 events. 121/375 cut-off events. For 296/303 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1831 event pairs, 43 based on Foata normal form. 6/374 useless extension candidates. Maximal degree in co-relation 933. Up to 154 conditions per place. [2023-11-06 22:47:36,476 INFO L140 encePairwiseOnDemand]: 178/181 looper letters, 26 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2023-11-06 22:47:36,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 548 flow [2023-11-06 22:47:36,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:47:36,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:47:36,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1160 transitions. [2023-11-06 22:47:36,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340699815837937 [2023-11-06 22:47:36,482 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1160 transitions. [2023-11-06 22:47:36,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1160 transitions. [2023-11-06 22:47:36,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:36,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1160 transitions. [2023-11-06 22:47:36,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 96.66666666666667) internal successors, (1160), 12 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:36,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 181.0) internal successors, (2353), 13 states have internal predecessors, (2353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:36,493 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 181.0) internal successors, (2353), 13 states have internal predecessors, (2353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:36,493 INFO L175 Difference]: Start difference. First operand has 67 places, 82 transitions, 438 flow. Second operand 12 states and 1160 transitions. [2023-11-06 22:47:36,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 548 flow [2023-11-06 22:47:36,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 88 transitions, 548 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:47:36,501 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 522 flow [2023-11-06 22:47:36,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=522, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2023-11-06 22:47:36,502 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 45 predicate places. [2023-11-06 22:47:36,503 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 522 flow [2023-11-06 22:47:36,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 95.46153846153847) internal successors, (1241), 13 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:36,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:36,504 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:36,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:36,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:36,710 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:47:36,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:36,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1504144912, now seen corresponding path program 2 times [2023-11-06 22:47:36,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:36,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799621929] [2023-11-06 22:47:36,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:36,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:37,159 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:47:37,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:37,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799621929] [2023-11-06 22:47:37,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799621929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:37,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:37,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:47:37,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698743728] [2023-11-06 22:47:37,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:37,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:47:37,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:37,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:47:37,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:47:37,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 181 [2023-11-06 22:47:37,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:37,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:37,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 181 [2023-11-06 22:47:37,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:37,636 INFO L124 PetriNetUnfolderBase]: 308/716 cut-off events. [2023-11-06 22:47:37,636 INFO L125 PetriNetUnfolderBase]: For 565/571 co-relation queries the response was YES. [2023-11-06 22:47:37,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 716 events. 308/716 cut-off events. For 565/571 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3389 event pairs, 101 based on Foata normal form. 0/699 useless extension candidates. Maximal degree in co-relation 2099. Up to 551 conditions per place. [2023-11-06 22:47:37,644 INFO L140 encePairwiseOnDemand]: 166/181 looper letters, 91 selfloop transitions, 53 changer transitions 8/156 dead transitions. [2023-11-06 22:47:37,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 156 transitions, 1114 flow [2023-11-06 22:47:37,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:47:37,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:47:37,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 564 transitions. [2023-11-06 22:47:37,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5193370165745856 [2023-11-06 22:47:37,648 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 564 transitions. [2023-11-06 22:47:37,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 564 transitions. [2023-11-06 22:47:37,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:37,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 564 transitions. [2023-11-06 22:47:37,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:37,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:37,654 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:37,654 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 522 flow. Second operand 6 states and 564 transitions. [2023-11-06 22:47:37,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 156 transitions, 1114 flow [2023-11-06 22:47:37,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 156 transitions, 1066 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-06 22:47:37,664 INFO L231 Difference]: Finished difference. Result has 89 places, 135 transitions, 956 flow [2023-11-06 22:47:37,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=956, PETRI_PLACES=89, PETRI_TRANSITIONS=135} [2023-11-06 22:47:37,666 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 50 predicate places. [2023-11-06 22:47:37,666 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 135 transitions, 956 flow [2023-11-06 22:47:37,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:37,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:37,667 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:37,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:47:37,667 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:47:37,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:37,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1290230352, now seen corresponding path program 1 times [2023-11-06 22:47:37,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:37,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906119418] [2023-11-06 22:47:37,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:37,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:47:38,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:38,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906119418] [2023-11-06 22:47:38,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906119418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:38,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:38,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:47:38,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386288355] [2023-11-06 22:47:38,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:38,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:47:38,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:38,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:47:38,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:47:38,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 181 [2023-11-06 22:47:38,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 135 transitions, 956 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:38,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:38,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 181 [2023-11-06 22:47:38,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:38,652 INFO L124 PetriNetUnfolderBase]: 357/823 cut-off events. [2023-11-06 22:47:38,652 INFO L125 PetriNetUnfolderBase]: For 1193/1204 co-relation queries the response was YES. [2023-11-06 22:47:38,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3044 conditions, 823 events. 357/823 cut-off events. For 1193/1204 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4095 event pairs, 96 based on Foata normal form. 0/799 useless extension candidates. Maximal degree in co-relation 2979. Up to 650 conditions per place. [2023-11-06 22:47:38,662 INFO L140 encePairwiseOnDemand]: 167/181 looper letters, 124 selfloop transitions, 57 changer transitions 18/205 dead transitions. [2023-11-06 22:47:38,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 205 transitions, 1728 flow [2023-11-06 22:47:38,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:47:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:47:38,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 544 transitions. [2023-11-06 22:47:38,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5009208103130756 [2023-11-06 22:47:38,665 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 544 transitions. [2023-11-06 22:47:38,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 544 transitions. [2023-11-06 22:47:38,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:38,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 544 transitions. [2023-11-06 22:47:38,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:38,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:38,671 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:38,671 INFO L175 Difference]: Start difference. First operand has 89 places, 135 transitions, 956 flow. Second operand 6 states and 544 transitions. [2023-11-06 22:47:38,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 205 transitions, 1728 flow [2023-11-06 22:47:38,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 205 transitions, 1664 flow, removed 32 selfloop flow, removed 0 redundant places. [2023-11-06 22:47:38,689 INFO L231 Difference]: Finished difference. Result has 98 places, 175 transitions, 1347 flow [2023-11-06 22:47:38,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1347, PETRI_PLACES=98, PETRI_TRANSITIONS=175} [2023-11-06 22:47:38,690 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 59 predicate places. [2023-11-06 22:47:38,690 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 175 transitions, 1347 flow [2023-11-06 22:47:38,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:38,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:38,691 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:38,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:47:38,692 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:47:38,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:38,692 INFO L85 PathProgramCache]: Analyzing trace with hash 274780314, now seen corresponding path program 1 times [2023-11-06 22:47:38,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:38,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603921832] [2023-11-06 22:47:38,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:38,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:47,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:47,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603921832] [2023-11-06 22:47:47,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603921832] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:47,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757519962] [2023-11-06 22:47:47,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:47,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:47,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:47,688 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:47,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:47:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:47,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-06 22:47:47,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:48,128 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:47:48,214 INFO L322 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-06 22:47:48,215 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-11-06 22:47:48,325 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-06 22:47:48,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,404 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-11-06 22:47:48,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,516 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2023-11-06 22:47:48,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,659 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 51 [2023-11-06 22:47:48,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,809 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 66 [2023-11-06 22:47:48,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:48,998 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 78 [2023-11-06 22:47:49,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,257 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 93 [2023-11-06 22:47:49,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:47:49,486 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:47:49,487 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 111 treesize of output 105 [2023-11-06 22:47:55,806 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:47:55,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:48:01,668 INFO L322 Elim1Store]: treesize reduction 41, result has 46.1 percent of original size [2023-11-06 22:48:01,668 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 1215 treesize of output 851 [2023-11-06 22:48:01,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:01,685 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 66 [2023-11-06 22:48:01,688 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2023-11-06 22:48:01,695 INFO L322 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-11-06 22:48:01,697 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 30 [2023-11-06 22:48:01,987 INFO L322 Elim1Store]: treesize reduction 41, result has 46.1 percent of original size [2023-11-06 22:48:01,988 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 2174 treesize of output 1422 [2023-11-06 22:48:02,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:02,006 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 65 [2023-11-06 22:48:02,027 INFO L322 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-11-06 22:48:02,027 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 158 [2023-11-06 22:48:02,046 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2023-11-06 22:48:02,136 INFO L322 Elim1Store]: treesize reduction 41, result has 46.1 percent of original size [2023-11-06 22:48:02,137 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 2573 treesize of output 1695 [2023-11-06 22:48:02,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:02,157 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 66 [2023-11-06 22:48:02,164 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2023-11-06 22:48:02,180 INFO L322 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-11-06 22:48:02,181 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 30 [2023-11-06 22:48:02,243 INFO L322 Elim1Store]: treesize reduction 41, result has 46.1 percent of original size [2023-11-06 22:48:02,244 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 1320 treesize of output 910 [2023-11-06 22:48:02,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:02,263 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 66 [2023-11-06 22:48:02,268 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:48:02,280 INFO L322 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-11-06 22:48:02,280 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 30 [2023-11-06 22:48:02,290 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2023-11-06 22:48:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:48:02,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757519962] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:02,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:48:02,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [21, 19] total 51 [2023-11-06 22:48:02,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373022876] [2023-11-06 22:48:02,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:02,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:48:02,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:02,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:48:02,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=2366, Unknown=4, NotChecked=0, Total=2652 [2023-11-06 22:48:12,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 181 [2023-11-06 22:48:12,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 175 transitions, 1347 flow. Second operand has 13 states, 13 states have (on average 73.46153846153847) internal successors, (955), 13 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:12,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:48:12,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 181 [2023-11-06 22:48:12,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:48:37,377 INFO L124 PetriNetUnfolderBase]: 723/1686 cut-off events. [2023-11-06 22:48:37,377 INFO L125 PetriNetUnfolderBase]: For 3529/3583 co-relation queries the response was YES. [2023-11-06 22:48:37,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7007 conditions, 1686 events. 723/1686 cut-off events. For 3529/3583 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 10789 event pairs, 42 based on Foata normal form. 10/1696 useless extension candidates. Maximal degree in co-relation 6937. Up to 607 conditions per place. [2023-11-06 22:48:37,397 INFO L140 encePairwiseOnDemand]: 162/181 looper letters, 352 selfloop transitions, 107 changer transitions 54/522 dead transitions. [2023-11-06 22:48:37,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 522 transitions, 4850 flow [2023-11-06 22:48:37,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:48:37,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-06 22:48:37,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1640 transitions. [2023-11-06 22:48:37,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4530386740331492 [2023-11-06 22:48:37,404 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1640 transitions. [2023-11-06 22:48:37,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1640 transitions. [2023-11-06 22:48:37,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:48:37,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1640 transitions. [2023-11-06 22:48:37,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 82.0) internal successors, (1640), 20 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:37,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 181.0) internal successors, (3801), 21 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:37,422 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 181.0) internal successors, (3801), 21 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:37,423 INFO L175 Difference]: Start difference. First operand has 98 places, 175 transitions, 1347 flow. Second operand 20 states and 1640 transitions. [2023-11-06 22:48:37,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 522 transitions, 4850 flow [2023-11-06 22:48:37,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 522 transitions, 4690 flow, removed 80 selfloop flow, removed 0 redundant places. [2023-11-06 22:48:37,483 INFO L231 Difference]: Finished difference. Result has 130 places, 267 transitions, 2497 flow [2023-11-06 22:48:37,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2497, PETRI_PLACES=130, PETRI_TRANSITIONS=267} [2023-11-06 22:48:37,484 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 91 predicate places. [2023-11-06 22:48:37,485 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 267 transitions, 2497 flow [2023-11-06 22:48:37,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 73.46153846153847) internal successors, (955), 13 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:37,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:48:37,486 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:37,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:37,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:37,692 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:48:37,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:37,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1234213744, now seen corresponding path program 2 times [2023-11-06 22:48:37,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:37,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369772565] [2023-11-06 22:48:37,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:37,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:50,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:50,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369772565] [2023-11-06 22:48:50,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369772565] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:50,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830767477] [2023-11-06 22:48:50,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:48:50,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:50,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:50,709 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:50,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:48:50,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:48:50,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:48:50,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-06 22:48:50,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:50,843 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-11-06 22:48:50,882 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-06 22:48:50,928 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-11-06 22:48:50,987 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2023-11-06 22:48:51,059 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2023-11-06 22:48:51,153 INFO L322 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-06 22:48:51,154 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-11-06 22:48:51,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,294 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 60 [2023-11-06 22:48:51,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,340 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 69 [2023-11-06 22:48:51,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,473 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 81 [2023-11-06 22:48:51,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,641 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 93 [2023-11-06 22:48:51,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:48:51,910 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:48:51,910 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 117 treesize of output 111 [2023-11-06 22:49:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:49:08,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:08,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830767477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:08,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:49:08,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [19] total 30 [2023-11-06 22:49:08,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347545392] [2023-11-06 22:49:08,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:08,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:49:08,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:08,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:49:08,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=812, Unknown=8, NotChecked=0, Total=930 [2023-11-06 22:49:10,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:12,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:14,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:16,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:18,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:20,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:22,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:24,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:26,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:28,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:30,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:32,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:34,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:36,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:39,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:41,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:41,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 181 [2023-11-06 22:49:41,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 267 transitions, 2497 flow. Second operand has 12 states, 12 states have (on average 62.666666666666664) internal successors, (752), 12 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:41,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:41,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 181 [2023-11-06 22:49:41,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:43,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:47,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:49,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:51,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:55,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:49:59,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:50:03,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:50:05,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:50:07,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:50:09,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:50:11,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:50:13,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:50:18,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:50:20,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:50:22,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:50:24,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:50:25,026 INFO L124 PetriNetUnfolderBase]: 921/2036 cut-off events. [2023-11-06 22:50:25,027 INFO L125 PetriNetUnfolderBase]: For 7532/7532 co-relation queries the response was YES. [2023-11-06 22:50:25,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10019 conditions, 2036 events. 921/2036 cut-off events. For 7532/7532 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 12983 event pairs, 94 based on Foata normal form. 6/1992 useless extension candidates. Maximal degree in co-relation 9935. Up to 1312 conditions per place. [2023-11-06 22:50:25,064 INFO L140 encePairwiseOnDemand]: 163/181 looper letters, 261 selfloop transitions, 114 changer transitions 43/418 dead transitions. [2023-11-06 22:50:25,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 418 transitions, 4548 flow [2023-11-06 22:50:25,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:50:25,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:50:25,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 894 transitions. [2023-11-06 22:50:25,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116022099447514 [2023-11-06 22:50:25,070 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 894 transitions. [2023-11-06 22:50:25,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 894 transitions. [2023-11-06 22:50:25,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:25,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 894 transitions. [2023-11-06 22:50:25,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 74.5) internal successors, (894), 12 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:25,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 181.0) internal successors, (2353), 13 states have internal predecessors, (2353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:25,081 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 181.0) internal successors, (2353), 13 states have internal predecessors, (2353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:25,081 INFO L175 Difference]: Start difference. First operand has 130 places, 267 transitions, 2497 flow. Second operand 12 states and 894 transitions. [2023-11-06 22:50:25,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 418 transitions, 4548 flow [2023-11-06 22:50:25,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 418 transitions, 4530 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-11-06 22:50:25,150 INFO L231 Difference]: Finished difference. Result has 146 places, 291 transitions, 3239 flow [2023-11-06 22:50:25,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=2483, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3239, PETRI_PLACES=146, PETRI_TRANSITIONS=291} [2023-11-06 22:50:25,152 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 107 predicate places. [2023-11-06 22:50:25,152 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 291 transitions, 3239 flow [2023-11-06 22:50:25,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 62.666666666666664) internal successors, (752), 12 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:25,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:25,153 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:25,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:25,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:50:25,360 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:50:25,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:25,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1893394919, now seen corresponding path program 1 times [2023-11-06 22:50:25,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:25,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341142755] [2023-11-06 22:50:25,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:25,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:29,206 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:29,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:29,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341142755] [2023-11-06 22:50:29,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341142755] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:50:29,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103526405] [2023-11-06 22:50:29,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:29,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:50:29,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:50:29,216 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:50:29,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:50:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:29,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-06 22:50:29,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:29,391 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-11-06 22:50:29,445 INFO L322 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-06 22:50:29,446 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-11-06 22:50:29,502 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:50:29,563 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:50:29,643 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-11-06 22:50:29,767 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-11-06 22:50:29,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:29,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:29,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:29,894 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2023-11-06 22:50:30,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,053 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 61 [2023-11-06 22:50:30,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,104 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 73 [2023-11-06 22:50:30,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,265 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 88 [2023-11-06 22:50:30,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:50:30,676 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:50:30,676 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 135 treesize of output 110 [2023-11-06 22:50:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:50:40,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:44,671 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:50:44,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103526405] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:50:44,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:50:44,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19, 13] total 40 [2023-11-06 22:50:44,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729882391] [2023-11-06 22:50:44,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:44,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:50:44,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:44,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:50:44,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1368, Unknown=5, NotChecked=0, Total=1640 [2023-11-06 22:51:02,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 181 [2023-11-06 22:51:02,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 291 transitions, 3239 flow. Second operand has 13 states, 13 states have (on average 73.38461538461539) internal successors, (954), 13 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:02,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:02,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 181 [2023-11-06 22:51:02,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:20,921 INFO L124 PetriNetUnfolderBase]: 710/1696 cut-off events. [2023-11-06 22:51:20,921 INFO L125 PetriNetUnfolderBase]: For 9218/9292 co-relation queries the response was YES. [2023-11-06 22:51:20,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9143 conditions, 1696 events. 710/1696 cut-off events. For 9218/9292 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11086 event pairs, 33 based on Foata normal form. 21/1717 useless extension candidates. Maximal degree in co-relation 9052. Up to 607 conditions per place. [2023-11-06 22:51:20,950 INFO L140 encePairwiseOnDemand]: 163/181 looper letters, 404 selfloop transitions, 110 changer transitions 17/545 dead transitions. [2023-11-06 22:51:20,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 545 transitions, 6380 flow [2023-11-06 22:51:20,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:51:20,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:51:20,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1025 transitions. [2023-11-06 22:51:20,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47191528545119704 [2023-11-06 22:51:20,956 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1025 transitions. [2023-11-06 22:51:20,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1025 transitions. [2023-11-06 22:51:20,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:20,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1025 transitions. [2023-11-06 22:51:20,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 85.41666666666667) internal successors, (1025), 12 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:20,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 181.0) internal successors, (2353), 13 states have internal predecessors, (2353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:20,966 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 181.0) internal successors, (2353), 13 states have internal predecessors, (2353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:20,966 INFO L175 Difference]: Start difference. First operand has 146 places, 291 transitions, 3239 flow. Second operand 12 states and 1025 transitions. [2023-11-06 22:51:20,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 545 transitions, 6380 flow [2023-11-06 22:51:21,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 545 transitions, 6160 flow, removed 21 selfloop flow, removed 6 redundant places. [2023-11-06 22:51:21,047 INFO L231 Difference]: Finished difference. Result has 160 places, 365 transitions, 4272 flow [2023-11-06 22:51:21,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=3106, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4272, PETRI_PLACES=160, PETRI_TRANSITIONS=365} [2023-11-06 22:51:21,048 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 121 predicate places. [2023-11-06 22:51:21,048 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 365 transitions, 4272 flow [2023-11-06 22:51:21,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 73.38461538461539) internal successors, (954), 13 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:21,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:21,049 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:21,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 22:51:21,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd5c5fe-d41e-48cf-96b5-ae8301fddd76/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:51:21,255 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:51:21,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:21,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1618008091, now seen corresponding path program 2 times [2023-11-06 22:51:21,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:21,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039728369] [2023-11-06 22:51:21,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:21,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat