./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a 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_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc --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 8259c4061eb15e4ed63bc06f98acbb6dc3f9862bbe262b5cabdd3ad4658d3239 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:56:43,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:56:43,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:56:43,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:56:43,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:56:43,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:56:43,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:56:43,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:56:43,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:56:43,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:56:43,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:56:43,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:56:43,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:56:43,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:56:43,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:56:43,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:56:43,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:56:43,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:56:43,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:56:43,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:56:43,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:56:43,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:56:43,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:56:43,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:56:43,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:56:43,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:56:43,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:56:43,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:56:43,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:56:43,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:56:43,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:56:43,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:56:43,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:56:43,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:56:43,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:56:43,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:56:43,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:56:43,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:56:43,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:56:43,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:56:43,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:56:43,594 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:56:43,646 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:56:43,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:56:43,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:56:43,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:56:43,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:56:43,649 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:56:43,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:56:43,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:56:43,650 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:56:43,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:56:43,651 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:56:43,652 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:56:43,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:56:43,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:56:43,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:56:43,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:56:43,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:56:43,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:56:43,654 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:56:43,654 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:56:43,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:56:43,654 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:56:43,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:56:43,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:56:43,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:56:43,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:56:43,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:43,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:56:43,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:56:43,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:56:43,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:56:43,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:56:43,658 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:56:43,658 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:56:43,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:56:43,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8259c4061eb15e4ed63bc06f98acbb6dc3f9862bbe262b5cabdd3ad4658d3239 [2022-11-02 20:56:43,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:56:44,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:56:44,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:56:44,024 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:56:44,025 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:56:44,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i [2022-11-02 20:56:44,113 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/data/65111aebb/c157a5528e3b4bd08268d353ed5a7519/FLAG23281e048 [2022-11-02 20:56:44,860 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:56:44,860 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i [2022-11-02 20:56:44,876 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/data/65111aebb/c157a5528e3b4bd08268d353ed5a7519/FLAG23281e048 [2022-11-02 20:56:45,060 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/data/65111aebb/c157a5528e3b4bd08268d353ed5a7519 [2022-11-02 20:56:45,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:56:45,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:56:45,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:45,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:56:45,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:56:45,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:45" (1/1) ... [2022-11-02 20:56:45,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a9f8ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:45, skipping insertion in model container [2022-11-02 20:56:45,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:45" (1/1) ... [2022-11-02 20:56:45,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:56:45,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:56:45,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:45,851 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:56:45,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:46,020 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:56:46,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:46 WrapperNode [2022-11-02 20:56:46,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:46,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:46,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:56:46,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:56:46,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:46" (1/1) ... [2022-11-02 20:56:46,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:46" (1/1) ... [2022-11-02 20:56:46,127 INFO L138 Inliner]: procedures = 262, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 112 [2022-11-02 20:56:46,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:46,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:56:46,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:56:46,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:56:46,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:46" (1/1) ... [2022-11-02 20:56:46,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:46" (1/1) ... [2022-11-02 20:56:46,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:46" (1/1) ... [2022-11-02 20:56:46,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:46" (1/1) ... [2022-11-02 20:56:46,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:46" (1/1) ... [2022-11-02 20:56:46,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:46" (1/1) ... [2022-11-02 20:56:46,207 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:46" (1/1) ... [2022-11-02 20:56:46,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:46" (1/1) ... [2022-11-02 20:56:46,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:56:46,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:56:46,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:56:46,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:56:46,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:46" (1/1) ... [2022-11-02 20:56:46,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:46,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:46,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:56:46,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:56:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:56:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:56:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:56:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:56:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:56:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:56:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-02 20:56:46,331 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-02 20:56:46,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:56:46,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:56:46,334 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:56:46,594 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:56:46,597 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:56:47,051 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:56:47,061 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:56:47,061 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:56:47,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:47 BoogieIcfgContainer [2022-11-02 20:56:47,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:56:47,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:56:47,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:56:47,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:56:47,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:56:45" (1/3) ... [2022-11-02 20:56:47,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39891806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:47, skipping insertion in model container [2022-11-02 20:56:47,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:46" (2/3) ... [2022-11-02 20:56:47,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39891806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:47, skipping insertion in model container [2022-11-02 20:56:47,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:47" (3/3) ... [2022-11-02 20:56:47,077 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_03-funloop_simple.i [2022-11-02 20:56:47,087 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:56:47,111 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:56:47,111 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-02 20:56:47,111 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:56:47,230 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:56:47,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 125 transitions, 255 flow [2022-11-02 20:56:47,352 INFO L130 PetriNetUnfolder]: 6/124 cut-off events. [2022-11-02 20:56:47,352 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:56:47,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 124 events. 6/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 221 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2022-11-02 20:56:47,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 125 transitions, 255 flow [2022-11-02 20:56:47,365 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 124 transitions, 251 flow [2022-11-02 20:56:47,378 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:56:47,386 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;@3254dcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:56:47,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-02 20:56:47,406 INFO L130 PetriNetUnfolder]: 4/56 cut-off events. [2022-11-02 20:56:47,407 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:56:47,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:47,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:47,408 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:56:47,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:47,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1284564446, now seen corresponding path program 1 times [2022-11-02 20:56:47,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:47,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058084480] [2022-11-02 20:56:47,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:47,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:47,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:47,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058084480] [2022-11-02 20:56:47,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058084480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:47,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:47,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:47,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077522007] [2022-11-02 20:56:47,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:47,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:56:47,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:47,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:56:47,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:56:47,835 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 125 [2022-11-02 20:56:47,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 124 transitions, 251 flow. Second operand has 2 states, 2 states have (on average 122.0) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:47,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:47,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 125 [2022-11-02 20:56:47,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:47,952 INFO L130 PetriNetUnfolder]: 3/121 cut-off events. [2022-11-02 20:56:47,952 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:56:47,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 121 events. 3/121 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 217 event pairs, 0 based on Foata normal form. 3/115 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2022-11-02 20:56:47,956 INFO L137 encePairwiseOnDemand]: 122/125 looper letters, 1 selfloop transitions, 0 changer transitions 0/121 dead transitions. [2022-11-02 20:56:47,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 121 transitions, 247 flow [2022-11-02 20:56:47,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:56:47,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:56:47,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 246 transitions. [2022-11-02 20:56:47,977 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.984 [2022-11-02 20:56:47,978 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 246 transitions. [2022-11-02 20:56:48,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 246 transitions. [2022-11-02 20:56:48,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:48,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 246 transitions. [2022-11-02 20:56:48,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 123.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,022 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,024 INFO L175 Difference]: Start difference. First operand has 122 places, 124 transitions, 251 flow. Second operand 2 states and 246 transitions. [2022-11-02 20:56:48,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 121 transitions, 247 flow [2022-11-02 20:56:48,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 121 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:56:48,035 INFO L231 Difference]: Finished difference. Result has 122 places, 121 transitions, 244 flow [2022-11-02 20:56:48,038 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=244, PETRI_PLACES=122, PETRI_TRANSITIONS=121} [2022-11-02 20:56:48,042 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 0 predicate places. [2022-11-02 20:56:48,042 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 121 transitions, 244 flow [2022-11-02 20:56:48,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 122.0) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:48,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:48,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:56:48,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:56:48,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:48,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1657093153, now seen corresponding path program 1 times [2022-11-02 20:56:48,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:48,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089930123] [2022-11-02 20:56:48,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:48,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:48,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:48,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:48,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089930123] [2022-11-02 20:56:48,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089930123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:48,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:48,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:48,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841112271] [2022-11-02 20:56:48,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:48,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:48,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:48,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:48,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:48,196 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 125 [2022-11-02 20:56:48,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 121 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:48,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 125 [2022-11-02 20:56:48,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:48,285 INFO L130 PetriNetUnfolder]: 3/125 cut-off events. [2022-11-02 20:56:48,285 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:56:48,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 125 events. 3/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 215 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 139. Up to 9 conditions per place. [2022-11-02 20:56:48,288 INFO L137 encePairwiseOnDemand]: 122/125 looper letters, 10 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2022-11-02 20:56:48,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 125 transitions, 276 flow [2022-11-02 20:56:48,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:48,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:48,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2022-11-02 20:56:48,293 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9466666666666667 [2022-11-02 20:56:48,293 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2022-11-02 20:56:48,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2022-11-02 20:56:48,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:48,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2022-11-02 20:56:48,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,299 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,299 INFO L175 Difference]: Start difference. First operand has 122 places, 121 transitions, 244 flow. Second operand 3 states and 355 transitions. [2022-11-02 20:56:48,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 125 transitions, 276 flow [2022-11-02 20:56:48,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 125 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:56:48,304 INFO L231 Difference]: Finished difference. Result has 125 places, 122 transitions, 256 flow [2022-11-02 20:56:48,305 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2022-11-02 20:56:48,306 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 3 predicate places. [2022-11-02 20:56:48,306 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 256 flow [2022-11-02 20:56:48,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:48,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:48,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:56:48,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:56:48,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:48,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1891473138, now seen corresponding path program 1 times [2022-11-02 20:56:48,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:48,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565798436] [2022-11-02 20:56:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:48,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:48,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:48,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:48,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565798436] [2022-11-02 20:56:48,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565798436] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:48,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434772043] [2022-11-02 20:56:48,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:48,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:48,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:48,612 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:48,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:56:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:48,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:56:48,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:48,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:56:48,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:48,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434772043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:48,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:56:48,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-02 20:56:48,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177689280] [2022-11-02 20:56:48,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:48,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:48,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:48,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:48,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:48,858 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 125 [2022-11-02 20:56:48,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 122 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:48,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 125 [2022-11-02 20:56:48,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:48,943 INFO L130 PetriNetUnfolder]: 3/155 cut-off events. [2022-11-02 20:56:48,943 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:56:48,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 155 events. 3/155 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 158 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 175. Up to 10 conditions per place. [2022-11-02 20:56:48,950 INFO L137 encePairwiseOnDemand]: 122/125 looper letters, 11 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2022-11-02 20:56:48,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 126 transitions, 290 flow [2022-11-02 20:56:48,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:48,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:48,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2022-11-02 20:56:48,954 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9413333333333334 [2022-11-02 20:56:48,954 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2022-11-02 20:56:48,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2022-11-02 20:56:48,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:48,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2022-11-02 20:56:48,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,962 INFO L175 Difference]: Start difference. First operand has 125 places, 122 transitions, 256 flow. Second operand 3 states and 353 transitions. [2022-11-02 20:56:48,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 126 transitions, 290 flow [2022-11-02 20:56:48,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 126 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:56:48,970 INFO L231 Difference]: Finished difference. Result has 127 places, 123 transitions, 266 flow [2022-11-02 20:56:48,970 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=127, PETRI_TRANSITIONS=123} [2022-11-02 20:56:48,973 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 5 predicate places. [2022-11-02 20:56:48,973 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 123 transitions, 266 flow [2022-11-02 20:56:48,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:48,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:48,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:49,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:49,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-02 20:56:49,194 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:56:49,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:49,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1317859348, now seen corresponding path program 1 times [2022-11-02 20:56:49,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:49,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302880576] [2022-11-02 20:56:49,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:49,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:49,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:49,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:49,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302880576] [2022-11-02 20:56:49,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302880576] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:49,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721479894] [2022-11-02 20:56:49,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:49,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:49,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:49,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:49,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:56:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:49,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:56:49,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:49,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:49,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:49,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721479894] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:49,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:49,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:56:49,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517255390] [2022-11-02 20:56:49,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:49,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:56:49,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:49,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:56:49,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:56:49,686 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 125 [2022-11-02 20:56:49,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 123 transitions, 266 flow. Second operand has 10 states, 10 states have (on average 115.1) internal successors, (1151), 10 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:49,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:49,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 125 [2022-11-02 20:56:49,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:49,848 INFO L130 PetriNetUnfolder]: 3/162 cut-off events. [2022-11-02 20:56:49,855 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:56:49,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 162 events. 3/162 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 152 event pairs, 0 based on Foata normal form. 2/155 useless extension candidates. Maximal degree in co-relation 194. Up to 6 conditions per place. [2022-11-02 20:56:49,858 INFO L137 encePairwiseOnDemand]: 119/125 looper letters, 11 selfloop transitions, 9 changer transitions 0/133 dead transitions. [2022-11-02 20:56:49,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 133 transitions, 328 flow [2022-11-02 20:56:49,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:56:49,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:56:49,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1039 transitions. [2022-11-02 20:56:49,862 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9235555555555556 [2022-11-02 20:56:49,862 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1039 transitions. [2022-11-02 20:56:49,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1039 transitions. [2022-11-02 20:56:49,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:49,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1039 transitions. [2022-11-02 20:56:49,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.44444444444444) internal successors, (1039), 9 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:49,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 125.0) internal successors, (1250), 10 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:49,871 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 125.0) internal successors, (1250), 10 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:49,871 INFO L175 Difference]: Start difference. First operand has 127 places, 123 transitions, 266 flow. Second operand 9 states and 1039 transitions. [2022-11-02 20:56:49,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 133 transitions, 328 flow [2022-11-02 20:56:49,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 133 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:56:49,881 INFO L231 Difference]: Finished difference. Result has 137 places, 129 transitions, 314 flow [2022-11-02 20:56:49,882 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=314, PETRI_PLACES=137, PETRI_TRANSITIONS=129} [2022-11-02 20:56:49,883 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 15 predicate places. [2022-11-02 20:56:49,884 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 129 transitions, 314 flow [2022-11-02 20:56:49,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 115.1) internal successors, (1151), 10 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:49,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:49,885 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:49,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:50,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:50,106 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:56:50,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:50,107 INFO L85 PathProgramCache]: Analyzing trace with hash -626594124, now seen corresponding path program 2 times [2022-11-02 20:56:50,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:50,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257733010] [2022-11-02 20:56:50,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:50,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:50,357 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:50,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:50,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257733010] [2022-11-02 20:56:50,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257733010] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:50,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778230330] [2022-11-02 20:56:50,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:56:50,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:50,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:50,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:50,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:56:50,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:56:50,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:56:50,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:56:50,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:50,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-02 20:56:50,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 21 treesize of output 20 [2022-11-02 20:56:50,643 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:56:50,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-02 20:56:50,706 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:56:50,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-02 20:56:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:56:50,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:50,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778230330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:50,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:56:50,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-02 20:56:50,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846222875] [2022-11-02 20:56:50,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:50,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:56:50,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:50,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:56:50,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:56:50,753 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 125 [2022-11-02 20:56:50,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 129 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 80.66666666666667) internal successors, (484), 6 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:50,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:50,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 125 [2022-11-02 20:56:50,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:51,792 INFO L130 PetriNetUnfolder]: 779/2745 cut-off events. [2022-11-02 20:56:51,793 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-02 20:56:51,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4359 conditions, 2745 events. 779/2745 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 19631 event pairs, 424 based on Foata normal form. 0/2478 useless extension candidates. Maximal degree in co-relation 4351. Up to 1258 conditions per place. [2022-11-02 20:56:51,812 INFO L137 encePairwiseOnDemand]: 114/125 looper letters, 75 selfloop transitions, 22 changer transitions 0/183 dead transitions. [2022-11-02 20:56:51,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 183 transitions, 616 flow [2022-11-02 20:56:51,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:56:51,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:56:51,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 572 transitions. [2022-11-02 20:56:51,815 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7626666666666667 [2022-11-02 20:56:51,815 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 572 transitions. [2022-11-02 20:56:51,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 572 transitions. [2022-11-02 20:56:51,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:51,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 572 transitions. [2022-11-02 20:56:51,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.33333333333333) internal successors, (572), 6 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:51,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:51,821 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:51,821 INFO L175 Difference]: Start difference. First operand has 137 places, 129 transitions, 314 flow. Second operand 6 states and 572 transitions. [2022-11-02 20:56:51,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 183 transitions, 616 flow [2022-11-02 20:56:51,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 183 transitions, 610 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-02 20:56:51,827 INFO L231 Difference]: Finished difference. Result has 146 places, 150 transitions, 458 flow [2022-11-02 20:56:51,827 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=458, PETRI_PLACES=146, PETRI_TRANSITIONS=150} [2022-11-02 20:56:51,828 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 24 predicate places. [2022-11-02 20:56:51,828 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 150 transitions, 458 flow [2022-11-02 20:56:51,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.66666666666667) internal successors, (484), 6 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:51,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:51,829 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:51,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:52,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:52,046 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:56:52,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:52,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1030322137, now seen corresponding path program 1 times [2022-11-02 20:56:52,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:52,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575512756] [2022-11-02 20:56:52,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:52,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:52,295 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:52,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:52,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575512756] [2022-11-02 20:56:52,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575512756] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:52,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628804634] [2022-11-02 20:56:52,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:52,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:52,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:52,298 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:52,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:56:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:52,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:56:52,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:52,480 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:52,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:52,618 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:52,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628804634] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:52,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:52,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-02 20:56:52,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208541164] [2022-11-02 20:56:52,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:52,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:56:52,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:52,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:56:52,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:56:52,625 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 125 [2022-11-02 20:56:52,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 150 transitions, 458 flow. Second operand has 18 states, 18 states have (on average 115.27777777777777) internal successors, (2075), 18 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:52,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:52,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 125 [2022-11-02 20:56:52,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:53,102 INFO L130 PetriNetUnfolder]: 99/814 cut-off events. [2022-11-02 20:56:53,102 INFO L131 PetriNetUnfolder]: For 74/80 co-relation queries the response was YES. [2022-11-02 20:56:53,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1232 conditions, 814 events. 99/814 cut-off events. For 74/80 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4088 event pairs, 8 based on Foata normal form. 4/766 useless extension candidates. Maximal degree in co-relation 1219. Up to 110 conditions per place. [2022-11-02 20:56:53,110 INFO L137 encePairwiseOnDemand]: 119/125 looper letters, 19 selfloop transitions, 21 changer transitions 0/174 dead transitions. [2022-11-02 20:56:53,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 174 transitions, 638 flow [2022-11-02 20:56:53,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:56:53,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:56:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2417 transitions. [2022-11-02 20:56:53,117 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9207619047619048 [2022-11-02 20:56:53,118 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2417 transitions. [2022-11-02 20:56:53,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2417 transitions. [2022-11-02 20:56:53,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:53,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2417 transitions. [2022-11-02 20:56:53,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 115.0952380952381) internal successors, (2417), 21 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:53,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 125.0) internal successors, (2750), 22 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:53,134 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 125.0) internal successors, (2750), 22 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:53,134 INFO L175 Difference]: Start difference. First operand has 146 places, 150 transitions, 458 flow. Second operand 21 states and 2417 transitions. [2022-11-02 20:56:53,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 174 transitions, 638 flow [2022-11-02 20:56:53,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 174 transitions, 638 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:56:53,143 INFO L231 Difference]: Finished difference. Result has 171 places, 163 transitions, 588 flow [2022-11-02 20:56:53,144 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=588, PETRI_PLACES=171, PETRI_TRANSITIONS=163} [2022-11-02 20:56:53,145 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 49 predicate places. [2022-11-02 20:56:53,145 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 163 transitions, 588 flow [2022-11-02 20:56:53,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 115.27777777777777) internal successors, (2075), 18 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:53,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:53,147 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:53,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:53,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:56:53,366 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:56:53,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:53,366 INFO L85 PathProgramCache]: Analyzing trace with hash -461165209, now seen corresponding path program 2 times [2022-11-02 20:56:53,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:53,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998358620] [2022-11-02 20:56:53,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:53,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:53,813 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:53,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:53,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998358620] [2022-11-02 20:56:53,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998358620] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:53,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679798126] [2022-11-02 20:56:53,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:56:53,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:53,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:53,816 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:53,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:56:53,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:56:53,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:56:53,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:56:53,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:54,180 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-02 20:56:54,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:54,235 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2022-11-02 20:56:54,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:54,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:54,298 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:56:54,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-02 20:56:54,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:54,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:54,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:54,383 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:56:54,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-02 20:56:54,440 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-02 20:56:54,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:54,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679798126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:54,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:56:54,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 25 [2022-11-02 20:56:54,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039307028] [2022-11-02 20:56:54,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:54,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:56:54,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:54,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:56:54,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:56:54,446 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 125 [2022-11-02 20:56:54,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 163 transitions, 588 flow. Second operand has 10 states, 10 states have (on average 68.6) internal successors, (686), 10 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:54,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:54,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 125 [2022-11-02 20:56:54,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:57,440 INFO L130 PetriNetUnfolder]: 2548/6821 cut-off events. [2022-11-02 20:56:57,440 INFO L131 PetriNetUnfolder]: For 2130/2146 co-relation queries the response was YES. [2022-11-02 20:56:57,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14272 conditions, 6821 events. 2548/6821 cut-off events. For 2130/2146 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 52680 event pairs, 956 based on Foata normal form. 0/6248 useless extension candidates. Maximal degree in co-relation 14254. Up to 2498 conditions per place. [2022-11-02 20:56:57,527 INFO L137 encePairwiseOnDemand]: 107/125 looper letters, 347 selfloop transitions, 33 changer transitions 0/467 dead transitions. [2022-11-02 20:56:57,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 467 transitions, 2286 flow [2022-11-02 20:56:57,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:56:57,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-02 20:56:57,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1130 transitions. [2022-11-02 20:56:57,534 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7533333333333333 [2022-11-02 20:56:57,534 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1130 transitions. [2022-11-02 20:56:57,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1130 transitions. [2022-11-02 20:56:57,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:57,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1130 transitions. [2022-11-02 20:56:57,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 94.16666666666667) internal successors, (1130), 12 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:57,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 125.0) internal successors, (1625), 13 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:57,545 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 125.0) internal successors, (1625), 13 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:57,545 INFO L175 Difference]: Start difference. First operand has 171 places, 163 transitions, 588 flow. Second operand 12 states and 1130 transitions. [2022-11-02 20:56:57,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 467 transitions, 2286 flow [2022-11-02 20:56:57,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 467 transitions, 2262 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-02 20:56:57,570 INFO L231 Difference]: Finished difference. Result has 184 places, 194 transitions, 850 flow [2022-11-02 20:56:57,571 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=850, PETRI_PLACES=184, PETRI_TRANSITIONS=194} [2022-11-02 20:56:57,572 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 62 predicate places. [2022-11-02 20:56:57,572 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 194 transitions, 850 flow [2022-11-02 20:56:57,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.6) internal successors, (686), 10 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:57,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:57,574 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:57,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:57,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:56:57,798 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:56:57,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:57,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1158747276, now seen corresponding path program 1 times [2022-11-02 20:56:57,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:57,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646626382] [2022-11-02 20:56:57,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:57,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:58,289 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:58,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:58,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646626382] [2022-11-02 20:56:58,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646626382] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:58,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635108356] [2022-11-02 20:56:58,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:58,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:58,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:58,291 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:58,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:56:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:58,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:56:58,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:58,630 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:58,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:58,925 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:58,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635108356] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:58,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:58,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-02 20:56:58,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254115899] [2022-11-02 20:56:58,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:58,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 20:56:58,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:58,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 20:56:58,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:56:58,931 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 125 [2022-11-02 20:56:58,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 194 transitions, 850 flow. Second operand has 23 states, 23 states have (on average 115.43478260869566) internal successors, (2655), 23 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:58,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:58,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 125 [2022-11-02 20:56:58,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:59,892 INFO L130 PetriNetUnfolder]: 279/2026 cut-off events. [2022-11-02 20:56:59,892 INFO L131 PetriNetUnfolder]: For 1313/1376 co-relation queries the response was YES. [2022-11-02 20:56:59,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3961 conditions, 2026 events. 279/2026 cut-off events. For 1313/1376 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 15010 event pairs, 65 based on Foata normal form. 7/1957 useless extension candidates. Maximal degree in co-relation 3934. Up to 278 conditions per place. [2022-11-02 20:56:59,916 INFO L137 encePairwiseOnDemand]: 119/125 looper letters, 25 selfloop transitions, 30 changer transitions 0/220 dead transitions. [2022-11-02 20:56:59,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 220 transitions, 1100 flow [2022-11-02 20:56:59,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:56:59,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-02 20:56:59,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3448 transitions. [2022-11-02 20:56:59,926 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9194666666666667 [2022-11-02 20:56:59,926 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3448 transitions. [2022-11-02 20:56:59,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3448 transitions. [2022-11-02 20:56:59,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:59,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3448 transitions. [2022-11-02 20:56:59,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 114.93333333333334) internal successors, (3448), 30 states have internal predecessors, (3448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:59,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 125.0) internal successors, (3875), 31 states have internal predecessors, (3875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:59,949 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 125.0) internal successors, (3875), 31 states have internal predecessors, (3875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:59,950 INFO L175 Difference]: Start difference. First operand has 184 places, 194 transitions, 850 flow. Second operand 30 states and 3448 transitions. [2022-11-02 20:56:59,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 220 transitions, 1100 flow [2022-11-02 20:56:59,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 220 transitions, 1099 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:56:59,971 INFO L231 Difference]: Finished difference. Result has 216 places, 204 transitions, 1001 flow [2022-11-02 20:56:59,972 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1001, PETRI_PLACES=216, PETRI_TRANSITIONS=204} [2022-11-02 20:56:59,976 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 94 predicate places. [2022-11-02 20:56:59,976 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 204 transitions, 1001 flow [2022-11-02 20:56:59,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 115.43478260869566) internal successors, (2655), 23 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:59,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:59,978 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:00,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:00,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:00,186 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:57:00,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:00,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1991683229, now seen corresponding path program 2 times [2022-11-02 20:57:00,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:00,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731401566] [2022-11-02 20:57:00,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:00,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:00,799 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-02 20:57:00,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:00,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731401566] [2022-11-02 20:57:00,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731401566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:00,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:00,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:57:00,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362950427] [2022-11-02 20:57:00,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:00,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:57:00,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:00,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:57:00,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:57:00,804 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 125 [2022-11-02 20:57:00,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 204 transitions, 1001 flow. Second operand has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:00,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:00,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 125 [2022-11-02 20:57:00,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:03,191 INFO L130 PetriNetUnfolder]: 1977/6572 cut-off events. [2022-11-02 20:57:03,191 INFO L131 PetriNetUnfolder]: For 4604/4718 co-relation queries the response was YES. [2022-11-02 20:57:03,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15748 conditions, 6572 events. 1977/6572 cut-off events. For 4604/4718 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 54124 event pairs, 866 based on Foata normal form. 73/6310 useless extension candidates. Maximal degree in co-relation 15718. Up to 3476 conditions per place. [2022-11-02 20:57:03,284 INFO L137 encePairwiseOnDemand]: 110/125 looper letters, 106 selfloop transitions, 57 changer transitions 0/275 dead transitions. [2022-11-02 20:57:03,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 275 transitions, 1661 flow [2022-11-02 20:57:03,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:57:03,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:57:03,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 561 transitions. [2022-11-02 20:57:03,287 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.748 [2022-11-02 20:57:03,287 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 561 transitions. [2022-11-02 20:57:03,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 561 transitions. [2022-11-02 20:57:03,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:03,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 561 transitions. [2022-11-02 20:57:03,291 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) [2022-11-02 20:57:03,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:03,293 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:03,293 INFO L175 Difference]: Start difference. First operand has 216 places, 204 transitions, 1001 flow. Second operand 6 states and 561 transitions. [2022-11-02 20:57:03,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 275 transitions, 1661 flow [2022-11-02 20:57:03,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 275 transitions, 1615 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-02 20:57:03,313 INFO L231 Difference]: Finished difference. Result has 208 places, 255 transitions, 1489 flow [2022-11-02 20:57:03,314 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1489, PETRI_PLACES=208, PETRI_TRANSITIONS=255} [2022-11-02 20:57:03,315 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 86 predicate places. [2022-11-02 20:57:03,315 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 255 transitions, 1489 flow [2022-11-02 20:57:03,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:03,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:03,316 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:03,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:57:03,316 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:57:03,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:03,317 INFO L85 PathProgramCache]: Analyzing trace with hash 698436477, now seen corresponding path program 1 times [2022-11-02 20:57:03,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:03,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747673320] [2022-11-02 20:57:03,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:03,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:03,841 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-02 20:57:03,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:03,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747673320] [2022-11-02 20:57:03,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747673320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:03,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:03,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:57:03,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425344067] [2022-11-02 20:57:03,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:03,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:57:03,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:03,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:57:03,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:57:03,848 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 125 [2022-11-02 20:57:03,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 255 transitions, 1489 flow. Second operand has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:03,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:03,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 125 [2022-11-02 20:57:03,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:06,869 INFO L130 PetriNetUnfolder]: 2720/8328 cut-off events. [2022-11-02 20:57:06,869 INFO L131 PetriNetUnfolder]: For 13056/13146 co-relation queries the response was YES. [2022-11-02 20:57:06,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23936 conditions, 8328 events. 2720/8328 cut-off events. For 13056/13146 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 70201 event pairs, 950 based on Foata normal form. 6/8040 useless extension candidates. Maximal degree in co-relation 23901. Up to 4699 conditions per place. [2022-11-02 20:57:07,017 INFO L137 encePairwiseOnDemand]: 102/125 looper letters, 160 selfloop transitions, 103 changer transitions 0/374 dead transitions. [2022-11-02 20:57:07,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 374 transitions, 2643 flow [2022-11-02 20:57:07,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:57:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:57:07,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 609 transitions. [2022-11-02 20:57:07,021 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.812 [2022-11-02 20:57:07,021 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 609 transitions. [2022-11-02 20:57:07,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 609 transitions. [2022-11-02 20:57:07,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:07,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 609 transitions. [2022-11-02 20:57:07,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:07,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:07,027 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:07,028 INFO L175 Difference]: Start difference. First operand has 208 places, 255 transitions, 1489 flow. Second operand 6 states and 609 transitions. [2022-11-02 20:57:07,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 374 transitions, 2643 flow [2022-11-02 20:57:07,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 374 transitions, 2543 flow, removed 50 selfloop flow, removed 0 redundant places. [2022-11-02 20:57:07,079 INFO L231 Difference]: Finished difference. Result has 218 places, 340 transitions, 2379 flow [2022-11-02 20:57:07,080 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2379, PETRI_PLACES=218, PETRI_TRANSITIONS=340} [2022-11-02 20:57:07,081 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 96 predicate places. [2022-11-02 20:57:07,081 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 340 transitions, 2379 flow [2022-11-02 20:57:07,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:07,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:07,082 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:07,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:57:07,083 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:57:07,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:07,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1898019225, now seen corresponding path program 1 times [2022-11-02 20:57:07,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:07,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709159813] [2022-11-02 20:57:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:07,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:09,180 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-02 20:57:09,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:09,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709159813] [2022-11-02 20:57:09,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709159813] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:09,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265013251] [2022-11-02 20:57:09,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:09,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:09,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:09,183 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:09,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:57:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:09,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 20:57:09,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:09,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:57:09,887 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-02 20:57:09,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:57:09,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265013251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:09,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:57:09,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2022-11-02 20:57:09,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478491897] [2022-11-02 20:57:09,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:09,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:57:09,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:09,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:57:09,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:57:09,893 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2022-11-02 20:57:09,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 340 transitions, 2379 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:09,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:09,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2022-11-02 20:57:09,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:15,911 INFO L130 PetriNetUnfolder]: 6567/16955 cut-off events. [2022-11-02 20:57:15,911 INFO L131 PetriNetUnfolder]: For 33648/33648 co-relation queries the response was YES. [2022-11-02 20:57:16,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53218 conditions, 16955 events. 6567/16955 cut-off events. For 33648/33648 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 143563 event pairs, 1755 based on Foata normal form. 13/16651 useless extension candidates. Maximal degree in co-relation 53178. Up to 5912 conditions per place. [2022-11-02 20:57:16,161 INFO L137 encePairwiseOnDemand]: 112/125 looper letters, 841 selfloop transitions, 16 changer transitions 0/941 dead transitions. [2022-11-02 20:57:16,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 941 transitions, 8579 flow [2022-11-02 20:57:16,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:57:16,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-02 20:57:16,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 952 transitions. [2022-11-02 20:57:16,165 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6346666666666667 [2022-11-02 20:57:16,166 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 952 transitions. [2022-11-02 20:57:16,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 952 transitions. [2022-11-02 20:57:16,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:16,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 952 transitions. [2022-11-02 20:57:16,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 79.33333333333333) internal successors, (952), 12 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:16,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 125.0) internal successors, (1625), 13 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:16,175 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 125.0) internal successors, (1625), 13 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:16,175 INFO L175 Difference]: Start difference. First operand has 218 places, 340 transitions, 2379 flow. Second operand 12 states and 952 transitions. [2022-11-02 20:57:16,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 941 transitions, 8579 flow [2022-11-02 20:57:16,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 941 transitions, 8069 flow, removed 255 selfloop flow, removed 0 redundant places. [2022-11-02 20:57:16,414 INFO L231 Difference]: Finished difference. Result has 236 places, 354 transitions, 2326 flow [2022-11-02 20:57:16,415 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2326, PETRI_PLACES=236, PETRI_TRANSITIONS=354} [2022-11-02 20:57:16,415 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 114 predicate places. [2022-11-02 20:57:16,416 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 354 transitions, 2326 flow [2022-11-02 20:57:16,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:16,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:16,417 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:16,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:16,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:16,630 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:57:16,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:16,630 INFO L85 PathProgramCache]: Analyzing trace with hash 329634111, now seen corresponding path program 2 times [2022-11-02 20:57:16,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:16,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261098701] [2022-11-02 20:57:16,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:16,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-02 20:57:17,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:17,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261098701] [2022-11-02 20:57:17,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261098701] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:17,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229102275] [2022-11-02 20:57:17,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:57:17,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:17,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:17,986 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:17,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:57:18,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:57:18,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:57:18,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 20:57:18,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:18,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:57:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-02 20:57:18,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:57:18,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229102275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:18,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:57:18,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-02 20:57:18,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953465928] [2022-11-02 20:57:18,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:18,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:57:18,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:18,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:57:18,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:57:18,657 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2022-11-02 20:57:18,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 354 transitions, 2326 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:18,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:18,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2022-11-02 20:57:18,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:25,946 INFO L130 PetriNetUnfolder]: 7772/20090 cut-off events. [2022-11-02 20:57:25,946 INFO L131 PetriNetUnfolder]: For 39994/40001 co-relation queries the response was YES. [2022-11-02 20:57:26,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65066 conditions, 20090 events. 7772/20090 cut-off events. For 39994/40001 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 178500 event pairs, 2083 based on Foata normal form. 17/19702 useless extension candidates. Maximal degree in co-relation 65018. Up to 6649 conditions per place. [2022-11-02 20:57:26,228 INFO L137 encePairwiseOnDemand]: 112/125 looper letters, 924 selfloop transitions, 21 changer transitions 0/1029 dead transitions. [2022-11-02 20:57:26,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 1029 transitions, 8663 flow [2022-11-02 20:57:26,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:57:26,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-02 20:57:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1014 transitions. [2022-11-02 20:57:26,232 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.676 [2022-11-02 20:57:26,232 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1014 transitions. [2022-11-02 20:57:26,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1014 transitions. [2022-11-02 20:57:26,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:26,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1014 transitions. [2022-11-02 20:57:26,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 84.5) internal successors, (1014), 12 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:26,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 125.0) internal successors, (1625), 13 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:26,251 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 125.0) internal successors, (1625), 13 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:26,261 INFO L175 Difference]: Start difference. First operand has 236 places, 354 transitions, 2326 flow. Second operand 12 states and 1014 transitions. [2022-11-02 20:57:26,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 1029 transitions, 8663 flow [2022-11-02 20:57:26,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 1029 transitions, 8648 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:57:26,475 INFO L231 Difference]: Finished difference. Result has 250 places, 366 transitions, 2466 flow [2022-11-02 20:57:26,476 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2466, PETRI_PLACES=250, PETRI_TRANSITIONS=366} [2022-11-02 20:57:26,477 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 128 predicate places. [2022-11-02 20:57:26,477 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 366 transitions, 2466 flow [2022-11-02 20:57:26,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:26,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:26,479 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:26,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:26,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:57:26,706 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:57:26,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:26,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2023248087, now seen corresponding path program 1 times [2022-11-02 20:57:26,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:26,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380045301] [2022-11-02 20:57:26,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:26,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-02 20:57:28,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:28,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380045301] [2022-11-02 20:57:28,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380045301] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:28,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255329633] [2022-11-02 20:57:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:28,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:28,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:28,024 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:28,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:57:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:28,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 20:57:28,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:28,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:57:28,671 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-02 20:57:28,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:57:28,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255329633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:28,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:57:28,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-02 20:57:28,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100637563] [2022-11-02 20:57:28,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:28,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:57:28,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:28,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:57:28,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:57:28,678 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2022-11-02 20:57:28,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 366 transitions, 2466 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:28,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:28,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2022-11-02 20:57:28,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:36,723 INFO L130 PetriNetUnfolder]: 9392/24339 cut-off events. [2022-11-02 20:57:36,723 INFO L131 PetriNetUnfolder]: For 55161/55173 co-relation queries the response was YES. [2022-11-02 20:57:37,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81147 conditions, 24339 events. 9392/24339 cut-off events. For 55161/55173 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 223265 event pairs, 2673 based on Foata normal form. 18/23828 useless extension candidates. Maximal degree in co-relation 81094. Up to 7548 conditions per place. [2022-11-02 20:57:37,127 INFO L137 encePairwiseOnDemand]: 111/125 looper letters, 1037 selfloop transitions, 29 changer transitions 0/1150 dead transitions. [2022-11-02 20:57:37,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 1150 transitions, 10273 flow [2022-11-02 20:57:37,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:57:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 20:57:37,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1142 transitions. [2022-11-02 20:57:37,135 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6525714285714286 [2022-11-02 20:57:37,136 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1142 transitions. [2022-11-02 20:57:37,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1142 transitions. [2022-11-02 20:57:37,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:37,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1142 transitions. [2022-11-02 20:57:37,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 81.57142857142857) internal successors, (1142), 14 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:37,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:37,160 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:37,161 INFO L175 Difference]: Start difference. First operand has 250 places, 366 transitions, 2466 flow. Second operand 14 states and 1142 transitions. [2022-11-02 20:57:37,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 1150 transitions, 10273 flow [2022-11-02 20:57:37,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 1150 transitions, 10185 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-11-02 20:57:37,467 INFO L231 Difference]: Finished difference. Result has 267 places, 384 transitions, 2713 flow [2022-11-02 20:57:37,468 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2713, PETRI_PLACES=267, PETRI_TRANSITIONS=384} [2022-11-02 20:57:37,469 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 145 predicate places. [2022-11-02 20:57:37,469 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 384 transitions, 2713 flow [2022-11-02 20:57:37,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:37,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:37,471 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:37,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:37,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:37,694 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:57:37,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:37,694 INFO L85 PathProgramCache]: Analyzing trace with hash -146236709, now seen corresponding path program 3 times [2022-11-02 20:57:37,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:37,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187008092] [2022-11-02 20:57:37,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:37,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:38,860 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-02 20:57:38,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:38,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187008092] [2022-11-02 20:57:38,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187008092] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:38,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604604349] [2022-11-02 20:57:38,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:57:38,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:38,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:38,862 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:38,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:57:39,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-02 20:57:39,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:57:39,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 20:57:39,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:39,324 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:57:39,488 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-02 20:57:39,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:57:39,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604604349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:39,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:57:39,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-02 20:57:39,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230417673] [2022-11-02 20:57:39,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:39,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:57:39,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:39,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:57:39,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:57:39,492 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2022-11-02 20:57:39,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 384 transitions, 2713 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:39,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:39,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2022-11-02 20:57:39,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:48,706 INFO L130 PetriNetUnfolder]: 10329/26616 cut-off events. [2022-11-02 20:57:48,707 INFO L131 PetriNetUnfolder]: For 69002/69036 co-relation queries the response was YES. [2022-11-02 20:57:49,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91974 conditions, 26616 events. 10329/26616 cut-off events. For 69002/69036 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 248259 event pairs, 3195 based on Foata normal form. 25/26102 useless extension candidates. Maximal degree in co-relation 91912. Up to 9945 conditions per place. [2022-11-02 20:57:49,403 INFO L137 encePairwiseOnDemand]: 111/125 looper letters, 1002 selfloop transitions, 38 changer transitions 0/1124 dead transitions. [2022-11-02 20:57:49,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 1124 transitions, 10114 flow [2022-11-02 20:57:49,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:57:49,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 20:57:49,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1177 transitions. [2022-11-02 20:57:49,409 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6725714285714286 [2022-11-02 20:57:49,409 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1177 transitions. [2022-11-02 20:57:49,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1177 transitions. [2022-11-02 20:57:49,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:49,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1177 transitions. [2022-11-02 20:57:49,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 84.07142857142857) internal successors, (1177), 14 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:49,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:49,426 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:49,426 INFO L175 Difference]: Start difference. First operand has 267 places, 384 transitions, 2713 flow. Second operand 14 states and 1177 transitions. [2022-11-02 20:57:49,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 1124 transitions, 10114 flow [2022-11-02 20:57:49,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 1124 transitions, 10001 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-11-02 20:57:49,708 INFO L231 Difference]: Finished difference. Result has 283 places, 402 transitions, 2996 flow [2022-11-02 20:57:49,708 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=2681, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2996, PETRI_PLACES=283, PETRI_TRANSITIONS=402} [2022-11-02 20:57:49,709 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 161 predicate places. [2022-11-02 20:57:49,709 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 402 transitions, 2996 flow [2022-11-02 20:57:49,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:49,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:49,710 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:49,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:49,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 20:57:49,911 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:57:49,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:49,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1801468631, now seen corresponding path program 2 times [2022-11-02 20:57:49,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:49,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499172792] [2022-11-02 20:57:49,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:49,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-02 20:57:50,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:50,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499172792] [2022-11-02 20:57:50,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499172792] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:50,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684695409] [2022-11-02 20:57:50,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:57:50,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:50,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:50,780 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:50,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:57:50,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:57:50,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:57:50,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 20:57:50,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:51,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:57:51,387 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-02 20:57:51,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:57:51,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684695409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:51,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:57:51,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-02 20:57:51,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493673282] [2022-11-02 20:57:51,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:51,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:57:51,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:51,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:57:51,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:57:51,391 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2022-11-02 20:57:51,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 402 transitions, 2996 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:51,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:51,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2022-11-02 20:57:51,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:58:02,776 INFO L130 PetriNetUnfolder]: 11983/31018 cut-off events. [2022-11-02 20:58:02,776 INFO L131 PetriNetUnfolder]: For 96506/96563 co-relation queries the response was YES. [2022-11-02 20:58:03,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109792 conditions, 31018 events. 11983/31018 cut-off events. For 96506/96563 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 298934 event pairs, 3376 based on Foata normal form. 33/30389 useless extension candidates. Maximal degree in co-relation 109721. Up to 7860 conditions per place. [2022-11-02 20:58:03,310 INFO L137 encePairwiseOnDemand]: 111/125 looper letters, 1246 selfloop transitions, 41 changer transitions 0/1371 dead transitions. [2022-11-02 20:58:03,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 1371 transitions, 12965 flow [2022-11-02 20:58:03,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:58:03,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 20:58:03,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1173 transitions. [2022-11-02 20:58:03,314 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6702857142857143 [2022-11-02 20:58:03,314 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1173 transitions. [2022-11-02 20:58:03,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1173 transitions. [2022-11-02 20:58:03,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:58:03,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1173 transitions. [2022-11-02 20:58:03,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 83.78571428571429) internal successors, (1173), 14 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:03,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:03,323 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:03,324 INFO L175 Difference]: Start difference. First operand has 283 places, 402 transitions, 2996 flow. Second operand 14 states and 1173 transitions. [2022-11-02 20:58:03,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 1371 transitions, 12965 flow [2022-11-02 20:58:03,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 1371 transitions, 12841 flow, removed 16 selfloop flow, removed 6 redundant places. [2022-11-02 20:58:03,733 INFO L231 Difference]: Finished difference. Result has 297 places, 423 transitions, 3390 flow [2022-11-02 20:58:03,734 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=2939, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3390, PETRI_PLACES=297, PETRI_TRANSITIONS=423} [2022-11-02 20:58:03,735 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 175 predicate places. [2022-11-02 20:58:03,735 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 423 transitions, 3390 flow [2022-11-02 20:58:03,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:03,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:58:03,736 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:03,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-02 20:58:03,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:58:03,950 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:58:03,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:03,950 INFO L85 PathProgramCache]: Analyzing trace with hash 282348595, now seen corresponding path program 4 times [2022-11-02 20:58:03,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:03,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668693180] [2022-11-02 20:58:03,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:03,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:05,180 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-02 20:58:05,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:05,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668693180] [2022-11-02 20:58:05,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668693180] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:05,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474511243] [2022-11-02 20:58:05,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:58:05,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:05,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:05,183 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:05,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6d8bbd-427f-46ee-b1af-2be2186d6a4c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:58:05,473 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:58:05,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:58:05,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:58:05,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:05,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:58:05,618 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-02 20:58:05,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:58:05,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474511243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:05,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:58:05,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 13 [2022-11-02 20:58:05,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250211463] [2022-11-02 20:58:05,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:05,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:58:05,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:05,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:58:05,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:58:05,622 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2022-11-02 20:58:05,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 423 transitions, 3390 flow. Second operand has 9 states, 9 states have (on average 56.666666666666664) internal successors, (510), 9 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:05,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:58:05,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2022-11-02 20:58:05,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand