./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_04-funloop_hard1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_04-funloop_hard1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro --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 4d853145e48ada6aa212af657ef21b1dd6bc82cb156511f71c23f87b45f2510e --- 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-8393723 [2022-11-18 20:21:35,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:21:35,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:21:35,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:21:35,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:21:35,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:21:35,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:21:35,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:21:35,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:21:35,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:21:35,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:21:35,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:21:35,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:21:35,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:21:35,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:21:35,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:21:35,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:21:35,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:21:35,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:21:35,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:21:35,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:21:35,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:21:35,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:21:35,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:21:35,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:21:35,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:21:35,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:21:35,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:21:35,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:21:35,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:21:35,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:21:35,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:21:35,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:21:35,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:21:35,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:21:35,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:21:35,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:21:35,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:21:35,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:21:35,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:21:35,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:21:35,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 20:21:35,633 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:21:35,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:21:35,634 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:21:35,634 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:21:35,635 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:21:35,635 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:21:35,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:21:35,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:21:35,636 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:21:35,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:21:35,638 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:21:35,638 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:21:35,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:21:35,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:21:35,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:21:35,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:21:35,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:21:35,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:21:35,639 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 20:21:35,640 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:21:35,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:21:35,640 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:21:35,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:21:35,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:21:35,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:21:35,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:21:35,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:21:35,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:21:35,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:21:35,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:21:35,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:21:35,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:21:35,644 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:21:35,644 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:21:35,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:21:35,645 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_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d853145e48ada6aa212af657ef21b1dd6bc82cb156511f71c23f87b45f2510e [2022-11-18 20:21:35,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:21:36,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:21:36,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:21:36,020 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:21:36,021 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:21:36,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/06-symbeq_04-funloop_hard1.i [2022-11-18 20:21:36,099 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/data/aae50d43b/9fd5e60595084c159754d17392e1ee8b/FLAG136266fb9 [2022-11-18 20:21:36,754 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:21:36,755 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/sv-benchmarks/c/goblint-regression/06-symbeq_04-funloop_hard1.i [2022-11-18 20:21:36,768 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/data/aae50d43b/9fd5e60595084c159754d17392e1ee8b/FLAG136266fb9 [2022-11-18 20:21:36,968 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/data/aae50d43b/9fd5e60595084c159754d17392e1ee8b [2022-11-18 20:21:36,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:21:36,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:21:36,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:21:36,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:21:36,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:21:36,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:21:36" (1/1) ... [2022-11-18 20:21:36,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74000d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:36, skipping insertion in model container [2022-11-18 20:21:36,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:21:36" (1/1) ... [2022-11-18 20:21:36,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:21:37,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:21:37,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:21:37,518 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:21:37,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:21:37,661 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:21:37,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:37 WrapperNode [2022-11-18 20:21:37,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:21:37,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:21:37,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:21:37,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:21:37,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:37" (1/1) ... [2022-11-18 20:21:37,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:37" (1/1) ... [2022-11-18 20:21:37,751 INFO L138 Inliner]: procedures = 262, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2022-11-18 20:21:37,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:21:37,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:21:37,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:21:37,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:21:37,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:37" (1/1) ... [2022-11-18 20:21:37,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:37" (1/1) ... [2022-11-18 20:21:37,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:37" (1/1) ... [2022-11-18 20:21:37,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:37" (1/1) ... [2022-11-18 20:21:37,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:37" (1/1) ... [2022-11-18 20:21:37,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:37" (1/1) ... [2022-11-18 20:21:37,801 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:37" (1/1) ... [2022-11-18 20:21:37,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:37" (1/1) ... [2022-11-18 20:21:37,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:21:37,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:21:37,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:21:37,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:21:37,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:37" (1/1) ... [2022-11-18 20:21:37,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:21:37,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:37,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:21:37,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:21:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:21:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:21:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:21:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:21:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:21:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:21:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:21:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:21:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:21:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:21:37,910 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:21:38,111 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:21:38,113 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:21:38,410 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:21:38,418 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:21:38,418 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 20:21:38,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:21:38 BoogieIcfgContainer [2022-11-18 20:21:38,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:21:38,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:21:38,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:21:38,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:21:38,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:21:36" (1/3) ... [2022-11-18 20:21:38,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b1d116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:21:38, skipping insertion in model container [2022-11-18 20:21:38,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:21:37" (2/3) ... [2022-11-18 20:21:38,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b1d116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:21:38, skipping insertion in model container [2022-11-18 20:21:38,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:21:38" (3/3) ... [2022-11-18 20:21:38,454 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_04-funloop_hard1.i [2022-11-18 20:21:38,462 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:21:38,471 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:21:38,471 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 20:21:38,471 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:21:38,575 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:21:38,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 128 transitions, 261 flow [2022-11-18 20:21:38,730 INFO L130 PetriNetUnfolder]: 6/127 cut-off events. [2022-11-18 20:21:38,730 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:21:38,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 6/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 230 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-11-18 20:21:38,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 128 transitions, 261 flow [2022-11-18 20:21:38,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 127 transitions, 257 flow [2022-11-18 20:21:38,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:21:38,773 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;@48bca5be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:21:38,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-18 20:21:38,795 INFO L130 PetriNetUnfolder]: 4/61 cut-off events. [2022-11-18 20:21:38,795 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:21:38,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:21:38,796 INFO L209 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] [2022-11-18 20:21:38,797 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)] === [2022-11-18 20:21:38,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:38,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1719096125, now seen corresponding path program 1 times [2022-11-18 20:21:38,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:38,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997846577] [2022-11-18 20:21:38,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:38,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:39,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:39,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997846577] [2022-11-18 20:21:39,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997846577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:39,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:21:39,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:21:39,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158705755] [2022-11-18 20:21:39,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:39,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:21:39,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:39,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:21:39,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:21:39,150 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 128 [2022-11-18 20:21:39,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 127 transitions, 257 flow. Second operand has 2 states, 2 states have (on average 125.5) internal successors, (251), 2 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:39,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:21:39,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 128 [2022-11-18 20:21:39,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:21:39,192 INFO L130 PetriNetUnfolder]: 3/124 cut-off events. [2022-11-18 20:21:39,193 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:21:39,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 124 events. 3/124 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 226 event pairs, 0 based on Foata normal form. 3/118 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2022-11-18 20:21:39,196 INFO L137 encePairwiseOnDemand]: 125/128 looper letters, 1 selfloop transitions, 0 changer transitions 0/124 dead transitions. [2022-11-18 20:21:39,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 124 transitions, 253 flow [2022-11-18 20:21:39,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:21:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:21:39,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 252 transitions. [2022-11-18 20:21:39,210 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.984375 [2022-11-18 20:21:39,210 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 252 transitions. [2022-11-18 20:21:39,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 252 transitions. [2022-11-18 20:21:39,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:21:39,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 252 transitions. [2022-11-18 20:21:39,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 126.0) internal successors, (252), 2 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:39,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:39,223 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:39,225 INFO L175 Difference]: Start difference. First operand has 125 places, 127 transitions, 257 flow. Second operand 2 states and 252 transitions. [2022-11-18 20:21:39,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 124 transitions, 253 flow [2022-11-18 20:21:39,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 124 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:21:39,234 INFO L231 Difference]: Finished difference. Result has 125 places, 124 transitions, 250 flow [2022-11-18 20:21:39,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=250, PETRI_PLACES=125, PETRI_TRANSITIONS=124} [2022-11-18 20:21:39,240 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 0 predicate places. [2022-11-18 20:21:39,241 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 124 transitions, 250 flow [2022-11-18 20:21:39,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 125.5) internal successors, (251), 2 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:39,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:21:39,242 INFO L209 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] [2022-11-18 20:21:39,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:21:39,242 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)] === [2022-11-18 20:21:39,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:39,243 INFO L85 PathProgramCache]: Analyzing trace with hash -932830209, now seen corresponding path program 1 times [2022-11-18 20:21:39,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:39,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376662814] [2022-11-18 20:21:39,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:39,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:39,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:39,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376662814] [2022-11-18 20:21:39,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376662814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:39,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:21:39,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:21:39,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826482757] [2022-11-18 20:21:39,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:39,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:21:39,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:39,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:21:39,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:21:39,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 128 [2022-11-18 20:21:39,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 124 transitions, 250 flow. Second operand has 3 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) [2022-11-18 20:21:39,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:21:39,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 128 [2022-11-18 20:21:39,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:21:39,499 INFO L130 PetriNetUnfolder]: 3/128 cut-off events. [2022-11-18 20:21:39,500 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:21:39,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 128 events. 3/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 224 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 142. Up to 9 conditions per place. [2022-11-18 20:21:39,502 INFO L137 encePairwiseOnDemand]: 125/128 looper letters, 10 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2022-11-18 20:21:39,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 128 transitions, 282 flow [2022-11-18 20:21:39,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:21:39,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:21:39,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2022-11-18 20:21:39,505 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9479166666666666 [2022-11-18 20:21:39,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 364 transitions. [2022-11-18 20:21:39,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 364 transitions. [2022-11-18 20:21:39,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:21:39,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 364 transitions. [2022-11-18 20:21:39,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:39,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:39,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:39,511 INFO L175 Difference]: Start difference. First operand has 125 places, 124 transitions, 250 flow. Second operand 3 states and 364 transitions. [2022-11-18 20:21:39,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 128 transitions, 282 flow [2022-11-18 20:21:39,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 128 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:21:39,515 INFO L231 Difference]: Finished difference. Result has 128 places, 125 transitions, 262 flow [2022-11-18 20:21:39,515 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=128, PETRI_TRANSITIONS=125} [2022-11-18 20:21:39,516 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 3 predicate places. [2022-11-18 20:21:39,516 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 125 transitions, 262 flow [2022-11-18 20:21:39,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-18 20:21:39,517 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:21:39,517 INFO L209 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] [2022-11-18 20:21:39,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:21:39,518 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)] === [2022-11-18 20:21:39,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:39,518 INFO L85 PathProgramCache]: Analyzing trace with hash 527090186, now seen corresponding path program 1 times [2022-11-18 20:21:39,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:39,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310683276] [2022-11-18 20:21:39,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:39,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:39,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:39,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:39,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310683276] [2022-11-18 20:21:39,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310683276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:39,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730389477] [2022-11-18 20:21:39,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:39,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:39,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:39,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:39,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:21:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:39,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:21:39,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:21:39,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:21:39,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730389477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:39,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:21:39,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 20:21:39,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635476111] [2022-11-18 20:21:39,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:39,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:21:39,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:39,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:21:39,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:21:39,844 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 128 [2022-11-18 20:21:39,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 125 transitions, 262 flow. Second operand has 3 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) [2022-11-18 20:21:39,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:21:39,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 128 [2022-11-18 20:21:39,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:21:39,964 INFO L130 PetriNetUnfolder]: 3/158 cut-off events. [2022-11-18 20:21:39,964 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:21:39,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 158 events. 3/158 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 160 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 178. Up to 10 conditions per place. [2022-11-18 20:21:39,968 INFO L137 encePairwiseOnDemand]: 125/128 looper letters, 11 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2022-11-18 20:21:39,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 129 transitions, 296 flow [2022-11-18 20:21:39,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:21:39,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:21:39,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2022-11-18 20:21:39,976 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9427083333333334 [2022-11-18 20:21:39,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2022-11-18 20:21:39,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2022-11-18 20:21:39,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:21:39,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2022-11-18 20:21:39,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:39,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:39,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:39,981 INFO L175 Difference]: Start difference. First operand has 128 places, 125 transitions, 262 flow. Second operand 3 states and 362 transitions. [2022-11-18 20:21:39,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 129 transitions, 296 flow [2022-11-18 20:21:39,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 129 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:21:39,992 INFO L231 Difference]: Finished difference. Result has 130 places, 126 transitions, 272 flow [2022-11-18 20:21:39,992 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=130, PETRI_TRANSITIONS=126} [2022-11-18 20:21:39,995 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 5 predicate places. [2022-11-18 20:21:39,995 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 126 transitions, 272 flow [2022-11-18 20:21:39,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-18 20:21:39,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:21:39,996 INFO L209 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] [2022-11-18 20:21:40,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:40,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:40,202 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)] === [2022-11-18 20:21:40,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:40,203 INFO L85 PathProgramCache]: Analyzing trace with hash -877434549, now seen corresponding path program 1 times [2022-11-18 20:21:40,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:40,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41943010] [2022-11-18 20:21:40,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:40,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:40,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:40,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:40,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41943010] [2022-11-18 20:21:40,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41943010] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:40,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989011357] [2022-11-18 20:21:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:40,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:40,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:40,399 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:40,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:21:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:40,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:21:40,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:40,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:40,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:40,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:40,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989011357] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:40,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:40,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:21:40,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862088744] [2022-11-18 20:21:40,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:40,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:21:40,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:40,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:21:40,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:21:40,658 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 128 [2022-11-18 20:21:40,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 126 transitions, 272 flow. Second operand has 10 states, 10 states have (on average 118.1) internal successors, (1181), 10 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:40,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:21:40,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 128 [2022-11-18 20:21:40,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:21:40,794 INFO L130 PetriNetUnfolder]: 3/165 cut-off events. [2022-11-18 20:21:40,795 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:21:40,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 165 events. 3/165 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 155 event pairs, 0 based on Foata normal form. 2/158 useless extension candidates. Maximal degree in co-relation 197. Up to 6 conditions per place. [2022-11-18 20:21:40,811 INFO L137 encePairwiseOnDemand]: 122/128 looper letters, 11 selfloop transitions, 9 changer transitions 0/136 dead transitions. [2022-11-18 20:21:40,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 136 transitions, 334 flow [2022-11-18 20:21:40,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:21:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:21:40,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1066 transitions. [2022-11-18 20:21:40,815 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9253472222222222 [2022-11-18 20:21:40,815 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1066 transitions. [2022-11-18 20:21:40,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1066 transitions. [2022-11-18 20:21:40,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:21:40,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1066 transitions. [2022-11-18 20:21:40,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.44444444444444) internal successors, (1066), 9 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:40,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 128.0) internal successors, (1280), 10 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:40,824 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 128.0) internal successors, (1280), 10 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:40,824 INFO L175 Difference]: Start difference. First operand has 130 places, 126 transitions, 272 flow. Second operand 9 states and 1066 transitions. [2022-11-18 20:21:40,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 136 transitions, 334 flow [2022-11-18 20:21:40,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 136 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:21:40,838 INFO L231 Difference]: Finished difference. Result has 140 places, 132 transitions, 320 flow [2022-11-18 20:21:40,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=320, PETRI_PLACES=140, PETRI_TRANSITIONS=132} [2022-11-18 20:21:40,839 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 15 predicate places. [2022-11-18 20:21:40,840 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 132 transitions, 320 flow [2022-11-18 20:21:40,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 118.1) internal successors, (1181), 10 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:40,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:21:40,841 INFO L209 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] [2022-11-18 20:21:40,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 20:21:41,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:41,052 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)] === [2022-11-18 20:21:41,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:41,053 INFO L85 PathProgramCache]: Analyzing trace with hash -198306197, now seen corresponding path program 2 times [2022-11-18 20:21:41,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:41,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585442313] [2022-11-18 20:21:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:41,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:41,307 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:41,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:41,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585442313] [2022-11-18 20:21:41,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585442313] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:41,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534025346] [2022-11-18 20:21:41,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:21:41,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:41,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:41,314 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:41,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:21:41,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:21:41,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:41,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:21:41,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:41,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:21:41,520 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:21:41,562 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:21:41,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 20:21:41,619 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:21:41,619 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:21:41,655 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:21:41,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:21:41,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534025346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:41,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:21:41,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-18 20:21:41,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210834499] [2022-11-18 20:21:41,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:41,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:21:41,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:41,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:21:41,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:21:41,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 128 [2022-11-18 20:21:41,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 132 transitions, 320 flow. Second operand has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:41,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:21:41,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 128 [2022-11-18 20:21:41,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:21:42,532 INFO L130 PetriNetUnfolder]: 779/2780 cut-off events. [2022-11-18 20:21:42,532 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-18 20:21:42,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4394 conditions, 2780 events. 779/2780 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 19979 event pairs, 424 based on Foata normal form. 0/2513 useless extension candidates. Maximal degree in co-relation 4386. Up to 1258 conditions per place. [2022-11-18 20:21:42,552 INFO L137 encePairwiseOnDemand]: 117/128 looper letters, 75 selfloop transitions, 22 changer transitions 0/186 dead transitions. [2022-11-18 20:21:42,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 186 transitions, 622 flow [2022-11-18 20:21:42,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:21:42,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:21:42,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 590 transitions. [2022-11-18 20:21:42,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7682291666666666 [2022-11-18 20:21:42,556 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 590 transitions. [2022-11-18 20:21:42,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 590 transitions. [2022-11-18 20:21:42,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:21:42,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 590 transitions. [2022-11-18 20:21:42,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.33333333333333) internal successors, (590), 6 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:42,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:42,564 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:42,564 INFO L175 Difference]: Start difference. First operand has 140 places, 132 transitions, 320 flow. Second operand 6 states and 590 transitions. [2022-11-18 20:21:42,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 186 transitions, 622 flow [2022-11-18 20:21:42,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 186 transitions, 616 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-18 20:21:42,573 INFO L231 Difference]: Finished difference. Result has 149 places, 153 transitions, 464 flow [2022-11-18 20:21:42,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=464, PETRI_PLACES=149, PETRI_TRANSITIONS=153} [2022-11-18 20:21:42,576 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 24 predicate places. [2022-11-18 20:21:42,576 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 153 transitions, 464 flow [2022-11-18 20:21:42,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:42,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:21:42,577 INFO L209 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] [2022-11-18 20:21:42,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:42,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:42,782 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)] === [2022-11-18 20:21:42,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:42,783 INFO L85 PathProgramCache]: Analyzing trace with hash 697598481, now seen corresponding path program 1 times [2022-11-18 20:21:42,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:42,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16300319] [2022-11-18 20:21:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:42,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:42,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:42,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16300319] [2022-11-18 20:21:42,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16300319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:42,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875184214] [2022-11-18 20:21:42,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:42,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:42,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:42,921 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:42,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:21:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:43,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:21:43,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:43,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:43,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875184214] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:43,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:43,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 20:21:43,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064067806] [2022-11-18 20:21:43,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:43,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:21:43,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:43,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:21:43,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:21:43,233 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 128 [2022-11-18 20:21:43,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 153 transitions, 464 flow. Second operand has 18 states, 18 states have (on average 118.27777777777777) internal successors, (2129), 18 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:43,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:21:43,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 128 [2022-11-18 20:21:43,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:21:43,594 INFO L130 PetriNetUnfolder]: 87/802 cut-off events. [2022-11-18 20:21:43,594 INFO L131 PetriNetUnfolder]: For 80/90 co-relation queries the response was YES. [2022-11-18 20:21:43,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 802 events. 87/802 cut-off events. For 80/90 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4046 event pairs, 8 based on Foata normal form. 4/754 useless extension candidates. Maximal degree in co-relation 1189. Up to 110 conditions per place. [2022-11-18 20:21:43,601 INFO L137 encePairwiseOnDemand]: 122/128 looper letters, 19 selfloop transitions, 21 changer transitions 0/177 dead transitions. [2022-11-18 20:21:43,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 177 transitions, 644 flow [2022-11-18 20:21:43,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:21:43,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:21:43,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2480 transitions. [2022-11-18 20:21:43,608 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9226190476190477 [2022-11-18 20:21:43,608 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2480 transitions. [2022-11-18 20:21:43,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2480 transitions. [2022-11-18 20:21:43,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:21:43,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2480 transitions. [2022-11-18 20:21:43,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 118.0952380952381) internal successors, (2480), 21 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:43,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 128.0) internal successors, (2816), 22 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:43,623 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 128.0) internal successors, (2816), 22 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:43,624 INFO L175 Difference]: Start difference. First operand has 149 places, 153 transitions, 464 flow. Second operand 21 states and 2480 transitions. [2022-11-18 20:21:43,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 177 transitions, 644 flow [2022-11-18 20:21:43,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 177 transitions, 644 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:21:43,654 INFO L231 Difference]: Finished difference. Result has 174 places, 166 transitions, 594 flow [2022-11-18 20:21:43,654 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=594, PETRI_PLACES=174, PETRI_TRANSITIONS=166} [2022-11-18 20:21:43,658 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 49 predicate places. [2022-11-18 20:21:43,658 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 166 transitions, 594 flow [2022-11-18 20:21:43,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 118.27777777777777) internal successors, (2129), 18 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:43,659 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:21:43,659 INFO L209 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] [2022-11-18 20:21:43,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:43,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:21:43,871 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)] === [2022-11-18 20:21:43,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:43,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1015929775, now seen corresponding path program 2 times [2022-11-18 20:21:43,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:43,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184113104] [2022-11-18 20:21:43,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:43,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:44,281 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:44,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:44,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184113104] [2022-11-18 20:21:44,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184113104] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:44,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006026779] [2022-11-18 20:21:44,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:21:44,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:44,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:44,291 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:44,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:21:44,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:21:44,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:44,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:21:44,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:44,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:21:44,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:21:44,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:21:44,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:21:44,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:21:44,651 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:21:44,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 20:21:44,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:21:44,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:21:44,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:21:44,705 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:21:44,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 20:21:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-18 20:21:44,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:21:44,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006026779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:44,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:21:44,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 25 [2022-11-18 20:21:44,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570311384] [2022-11-18 20:21:44,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:44,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:21:44,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:44,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:21:44,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:21:44,752 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 128 [2022-11-18 20:21:44,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 166 transitions, 594 flow. Second operand has 10 states, 10 states have (on average 69.6) internal successors, (696), 10 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:44,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:21:44,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 128 [2022-11-18 20:21:44,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:21:47,073 INFO L130 PetriNetUnfolder]: 2666/7211 cut-off events. [2022-11-18 20:21:47,074 INFO L131 PetriNetUnfolder]: For 2068/2084 co-relation queries the response was YES. [2022-11-18 20:21:47,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14920 conditions, 7211 events. 2666/7211 cut-off events. For 2068/2084 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 56471 event pairs, 1010 based on Foata normal form. 0/6626 useless extension candidates. Maximal degree in co-relation 14902. Up to 2598 conditions per place. [2022-11-18 20:21:47,139 INFO L137 encePairwiseOnDemand]: 110/128 looper letters, 367 selfloop transitions, 33 changer transitions 0/488 dead transitions. [2022-11-18 20:21:47,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 488 transitions, 2368 flow [2022-11-18 20:21:47,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:21:47,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:21:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1162 transitions. [2022-11-18 20:21:47,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7565104166666666 [2022-11-18 20:21:47,148 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1162 transitions. [2022-11-18 20:21:47,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1162 transitions. [2022-11-18 20:21:47,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:21:47,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1162 transitions. [2022-11-18 20:21:47,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 96.83333333333333) internal successors, (1162), 12 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:47,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:47,157 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:47,157 INFO L175 Difference]: Start difference. First operand has 174 places, 166 transitions, 594 flow. Second operand 12 states and 1162 transitions. [2022-11-18 20:21:47,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 488 transitions, 2368 flow [2022-11-18 20:21:47,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 488 transitions, 2344 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-18 20:21:47,176 INFO L231 Difference]: Finished difference. Result has 187 places, 197 transitions, 856 flow [2022-11-18 20:21:47,177 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=856, PETRI_PLACES=187, PETRI_TRANSITIONS=197} [2022-11-18 20:21:47,178 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 62 predicate places. [2022-11-18 20:21:47,178 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 197 transitions, 856 flow [2022-11-18 20:21:47,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.6) internal successors, (696), 10 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:47,179 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:21:47,179 INFO L209 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] [2022-11-18 20:21:47,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:47,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:47,386 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)] === [2022-11-18 20:21:47,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:47,386 INFO L85 PathProgramCache]: Analyzing trace with hash -177478757, now seen corresponding path program 1 times [2022-11-18 20:21:47,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:47,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835244176] [2022-11-18 20:21:47,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:47,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:47,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:47,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835244176] [2022-11-18 20:21:47,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835244176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:47,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059453908] [2022-11-18 20:21:47,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:47,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:47,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:47,766 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:47,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:21:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:21:47,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:47,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:48,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059453908] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:48,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:48,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 20:21:48,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246705593] [2022-11-18 20:21:48,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:48,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:21:48,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:48,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:21:48,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:21:48,218 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 128 [2022-11-18 20:21:48,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 197 transitions, 856 flow. Second operand has 23 states, 23 states have (on average 118.43478260869566) internal successors, (2724), 23 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:48,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:21:48,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 128 [2022-11-18 20:21:48,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:21:48,967 INFO L130 PetriNetUnfolder]: 279/2040 cut-off events. [2022-11-18 20:21:48,967 INFO L131 PetriNetUnfolder]: For 1350/1417 co-relation queries the response was YES. [2022-11-18 20:21:48,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3971 conditions, 2040 events. 279/2040 cut-off events. For 1350/1417 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 15178 event pairs, 65 based on Foata normal form. 7/1971 useless extension candidates. Maximal degree in co-relation 3944. Up to 278 conditions per place. [2022-11-18 20:21:48,986 INFO L137 encePairwiseOnDemand]: 122/128 looper letters, 25 selfloop transitions, 30 changer transitions 0/223 dead transitions. [2022-11-18 20:21:48,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 223 transitions, 1106 flow [2022-11-18 20:21:48,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:21:48,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:21:48,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3538 transitions. [2022-11-18 20:21:48,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9213541666666667 [2022-11-18 20:21:48,996 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3538 transitions. [2022-11-18 20:21:48,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3538 transitions. [2022-11-18 20:21:48,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:21:48,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3538 transitions. [2022-11-18 20:21:49,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 117.93333333333334) internal successors, (3538), 30 states have internal predecessors, (3538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:49,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 128.0) internal successors, (3968), 31 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:49,019 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 128.0) internal successors, (3968), 31 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:49,019 INFO L175 Difference]: Start difference. First operand has 187 places, 197 transitions, 856 flow. Second operand 30 states and 3538 transitions. [2022-11-18 20:21:49,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 223 transitions, 1106 flow [2022-11-18 20:21:49,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 223 transitions, 1105 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:21:49,031 INFO L231 Difference]: Finished difference. Result has 219 places, 207 transitions, 1007 flow [2022-11-18 20:21:49,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1007, PETRI_PLACES=219, PETRI_TRANSITIONS=207} [2022-11-18 20:21:49,032 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 94 predicate places. [2022-11-18 20:21:49,032 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 207 transitions, 1007 flow [2022-11-18 20:21:49,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 118.43478260869566) internal successors, (2724), 23 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:49,034 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:21:49,034 INFO L209 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] [2022-11-18 20:21:49,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:49,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:49,240 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)] === [2022-11-18 20:21:49,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:49,241 INFO L85 PathProgramCache]: Analyzing trace with hash 26007824, now seen corresponding path program 2 times [2022-11-18 20:21:49,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:49,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493441254] [2022-11-18 20:21:49,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:49,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:49,835 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:21:49,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:49,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493441254] [2022-11-18 20:21:49,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493441254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:49,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:21:49,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:21:49,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734664680] [2022-11-18 20:21:49,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:49,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:21:49,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:49,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:21:49,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:21:49,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 128 [2022-11-18 20:21:49,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 207 transitions, 1007 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:49,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:21:49,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 128 [2022-11-18 20:21:49,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:21:51,430 INFO L130 PetriNetUnfolder]: 1977/6642 cut-off events. [2022-11-18 20:21:51,430 INFO L131 PetriNetUnfolder]: For 4612/4714 co-relation queries the response was YES. [2022-11-18 20:21:51,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15818 conditions, 6642 events. 1977/6642 cut-off events. For 4612/4714 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 55186 event pairs, 866 based on Foata normal form. 73/6379 useless extension candidates. Maximal degree in co-relation 15788. Up to 3476 conditions per place. [2022-11-18 20:21:51,488 INFO L137 encePairwiseOnDemand]: 113/128 looper letters, 106 selfloop transitions, 57 changer transitions 0/278 dead transitions. [2022-11-18 20:21:51,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 278 transitions, 1667 flow [2022-11-18 20:21:51,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:21:51,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:21:51,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 579 transitions. [2022-11-18 20:21:51,491 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.75390625 [2022-11-18 20:21:51,491 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 579 transitions. [2022-11-18 20:21:51,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 579 transitions. [2022-11-18 20:21:51,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:21:51,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 579 transitions. [2022-11-18 20:21:51,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.5) internal successors, (579), 6 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:51,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:51,495 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:51,495 INFO L175 Difference]: Start difference. First operand has 219 places, 207 transitions, 1007 flow. Second operand 6 states and 579 transitions. [2022-11-18 20:21:51,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 278 transitions, 1667 flow [2022-11-18 20:21:51,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 278 transitions, 1621 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-18 20:21:51,511 INFO L231 Difference]: Finished difference. Result has 211 places, 258 transitions, 1495 flow [2022-11-18 20:21:51,511 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1495, PETRI_PLACES=211, PETRI_TRANSITIONS=258} [2022-11-18 20:21:51,512 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 86 predicate places. [2022-11-18 20:21:51,512 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 258 transitions, 1495 flow [2022-11-18 20:21:51,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:51,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:21:51,513 INFO L209 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] [2022-11-18 20:21:51,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:21:51,513 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)] === [2022-11-18 20:21:51,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:51,514 INFO L85 PathProgramCache]: Analyzing trace with hash 360970443, now seen corresponding path program 1 times [2022-11-18 20:21:51,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:51,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136322302] [2022-11-18 20:21:51,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:51,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:52,024 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:21:52,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:52,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136322302] [2022-11-18 20:21:52,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136322302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:52,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:21:52,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:21:52,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855225860] [2022-11-18 20:21:52,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:52,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:21:52,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:52,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:21:52,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:21:52,028 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 128 [2022-11-18 20:21:52,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 258 transitions, 1495 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:52,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:21:52,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 128 [2022-11-18 20:21:52,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:21:54,566 INFO L130 PetriNetUnfolder]: 2720/8418 cut-off events. [2022-11-18 20:21:54,566 INFO L131 PetriNetUnfolder]: For 12970/13060 co-relation queries the response was YES. [2022-11-18 20:21:54,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24026 conditions, 8418 events. 2720/8418 cut-off events. For 12970/13060 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 71577 event pairs, 950 based on Foata normal form. 6/8129 useless extension candidates. Maximal degree in co-relation 23991. Up to 4699 conditions per place. [2022-11-18 20:21:54,622 INFO L137 encePairwiseOnDemand]: 105/128 looper letters, 160 selfloop transitions, 103 changer transitions 0/377 dead transitions. [2022-11-18 20:21:54,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 377 transitions, 2649 flow [2022-11-18 20:21:54,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:21:54,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:21:54,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 627 transitions. [2022-11-18 20:21:54,624 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.81640625 [2022-11-18 20:21:54,625 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 627 transitions. [2022-11-18 20:21:54,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 627 transitions. [2022-11-18 20:21:54,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:21:54,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 627 transitions. [2022-11-18 20:21:54,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.5) internal successors, (627), 6 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:54,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:54,629 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:54,629 INFO L175 Difference]: Start difference. First operand has 211 places, 258 transitions, 1495 flow. Second operand 6 states and 627 transitions. [2022-11-18 20:21:54,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 377 transitions, 2649 flow [2022-11-18 20:21:54,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 377 transitions, 2549 flow, removed 50 selfloop flow, removed 0 redundant places. [2022-11-18 20:21:54,664 INFO L231 Difference]: Finished difference. Result has 221 places, 343 transitions, 2385 flow [2022-11-18 20:21:54,666 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2385, PETRI_PLACES=221, PETRI_TRANSITIONS=343} [2022-11-18 20:21:54,666 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 96 predicate places. [2022-11-18 20:21:54,667 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 343 transitions, 2385 flow [2022-11-18 20:21:54,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:54,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:21:54,667 INFO L209 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] [2022-11-18 20:21:54,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:21:54,668 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)] === [2022-11-18 20:21:54,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:54,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2059615209, now seen corresponding path program 1 times [2022-11-18 20:21:54,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:54,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262557624] [2022-11-18 20:21:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:54,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:56,081 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-18 20:21:56,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:56,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262557624] [2022-11-18 20:21:56,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262557624] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:56,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932941303] [2022-11-18 20:21:56,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:56,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:56,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:56,087 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:56,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:21:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:56,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:21:56,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:56,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:21:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:21:56,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:21:56,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932941303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:56,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:21:56,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-18 20:21:56,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815408606] [2022-11-18 20:21:56,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:56,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:21:56,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:56,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:21:56,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:21:56,585 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2022-11-18 20:21:56,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 343 transitions, 2385 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:56,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:21:56,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2022-11-18 20:21:56,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:22:01,731 INFO L130 PetriNetUnfolder]: 6829/17641 cut-off events. [2022-11-18 20:22:01,732 INFO L131 PetriNetUnfolder]: For 34490/34490 co-relation queries the response was YES. [2022-11-18 20:22:01,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54900 conditions, 17641 events. 6829/17641 cut-off events. For 34490/34490 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 150111 event pairs, 1956 based on Foata normal form. 13/17328 useless extension candidates. Maximal degree in co-relation 54860. Up to 6172 conditions per place. [2022-11-18 20:22:01,920 INFO L137 encePairwiseOnDemand]: 115/128 looper letters, 845 selfloop transitions, 16 changer transitions 0/946 dead transitions. [2022-11-18 20:22:01,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 946 transitions, 8597 flow [2022-11-18 20:22:01,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:22:01,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:22:01,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 968 transitions. [2022-11-18 20:22:01,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2022-11-18 20:22:01,924 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 968 transitions. [2022-11-18 20:22:01,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 968 transitions. [2022-11-18 20:22:01,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:22:01,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 968 transitions. [2022-11-18 20:22:01,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 80.66666666666667) internal successors, (968), 12 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:01,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:01,932 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:01,933 INFO L175 Difference]: Start difference. First operand has 221 places, 343 transitions, 2385 flow. Second operand 12 states and 968 transitions. [2022-11-18 20:22:01,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 946 transitions, 8597 flow [2022-11-18 20:22:02,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 946 transitions, 8087 flow, removed 255 selfloop flow, removed 0 redundant places. [2022-11-18 20:22:02,102 INFO L231 Difference]: Finished difference. Result has 239 places, 357 transitions, 2332 flow [2022-11-18 20:22:02,103 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2215, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2332, PETRI_PLACES=239, PETRI_TRANSITIONS=357} [2022-11-18 20:22:02,103 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 114 predicate places. [2022-11-18 20:22:02,104 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 357 transitions, 2332 flow [2022-11-18 20:22:02,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:02,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:22:02,105 INFO L209 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] [2022-11-18 20:22:02,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:02,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:02,312 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)] === [2022-11-18 20:22:02,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:02,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1396501721, now seen corresponding path program 2 times [2022-11-18 20:22:02,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:02,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521596862] [2022-11-18 20:22:02,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:02,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-18 20:22:03,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:03,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521596862] [2022-11-18 20:22:03,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521596862] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:03,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289769500] [2022-11-18 20:22:03,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:22:03,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:03,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:03,703 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:03,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:22:03,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:22:03,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:22:03,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:22:03,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:04,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:22:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:22:04,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:22:04,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289769500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:22:04,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:22:04,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2022-11-18 20:22:04,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973493262] [2022-11-18 20:22:04,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:22:04,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:22:04,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:04,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:22:04,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:22:04,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2022-11-18 20:22:04,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 357 transitions, 2332 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:04,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:22:04,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2022-11-18 20:22:04,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:22:10,457 INFO L130 PetriNetUnfolder]: 8097/20912 cut-off events. [2022-11-18 20:22:10,457 INFO L131 PetriNetUnfolder]: For 41026/41033 co-relation queries the response was YES. [2022-11-18 20:22:10,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67207 conditions, 20912 events. 8097/20912 cut-off events. For 41026/41033 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 187252 event pairs, 2195 based on Foata normal form. 17/20510 useless extension candidates. Maximal degree in co-relation 67159. Up to 6887 conditions per place. [2022-11-18 20:22:10,741 INFO L137 encePairwiseOnDemand]: 115/128 looper letters, 938 selfloop transitions, 21 changer transitions 0/1044 dead transitions. [2022-11-18 20:22:10,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 1044 transitions, 8721 flow [2022-11-18 20:22:10,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:22:10,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:22:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1040 transitions. [2022-11-18 20:22:10,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6770833333333334 [2022-11-18 20:22:10,745 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1040 transitions. [2022-11-18 20:22:10,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1040 transitions. [2022-11-18 20:22:10,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:22:10,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1040 transitions. [2022-11-18 20:22:10,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 86.66666666666667) internal successors, (1040), 12 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:10,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:10,770 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:10,770 INFO L175 Difference]: Start difference. First operand has 239 places, 357 transitions, 2332 flow. Second operand 12 states and 1040 transitions. [2022-11-18 20:22:10,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 1044 transitions, 8721 flow [2022-11-18 20:22:10,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 1044 transitions, 8706 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:22:10,943 INFO L231 Difference]: Finished difference. Result has 253 places, 369 transitions, 2472 flow [2022-11-18 20:22:10,944 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2472, PETRI_PLACES=253, PETRI_TRANSITIONS=369} [2022-11-18 20:22:10,946 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 128 predicate places. [2022-11-18 20:22:10,947 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 369 transitions, 2472 flow [2022-11-18 20:22:10,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:10,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:22:10,948 INFO L209 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] [2022-11-18 20:22:10,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:11,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:11,155 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)] === [2022-11-18 20:22:11,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:11,156 INFO L85 PathProgramCache]: Analyzing trace with hash 110844952, now seen corresponding path program 1 times [2022-11-18 20:22:11,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:11,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402845651] [2022-11-18 20:22:11,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:11,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-18 20:22:12,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:12,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402845651] [2022-11-18 20:22:12,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402845651] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:12,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904477998] [2022-11-18 20:22:12,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:12,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:12,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:12,652 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:12,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:22:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:12,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:22:12,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:13,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:22:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:22:13,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:22:13,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904477998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:22:13,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:22:13,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2022-11-18 20:22:13,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567077928] [2022-11-18 20:22:13,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:22:13,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:22:13,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:13,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:22:13,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:22:13,595 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2022-11-18 20:22:13,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 369 transitions, 2472 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:13,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:22:13,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2022-11-18 20:22:13,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:22:21,791 INFO L130 PetriNetUnfolder]: 9812/25429 cut-off events. [2022-11-18 20:22:21,791 INFO L131 PetriNetUnfolder]: For 57025/57042 co-relation queries the response was YES. [2022-11-18 20:22:22,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84024 conditions, 25429 events. 9812/25429 cut-off events. For 57025/57042 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 234968 event pairs, 2796 based on Foata normal form. 21/24902 useless extension candidates. Maximal degree in co-relation 83971. Up to 7879 conditions per place. [2022-11-18 20:22:22,146 INFO L137 encePairwiseOnDemand]: 114/128 looper letters, 1043 selfloop transitions, 29 changer transitions 0/1157 dead transitions. [2022-11-18 20:22:22,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 1157 transitions, 10299 flow [2022-11-18 20:22:22,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:22:22,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 20:22:22,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1162 transitions. [2022-11-18 20:22:22,152 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2022-11-18 20:22:22,152 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1162 transitions. [2022-11-18 20:22:22,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1162 transitions. [2022-11-18 20:22:22,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:22:22,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1162 transitions. [2022-11-18 20:22:22,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:22,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:22,161 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:22,162 INFO L175 Difference]: Start difference. First operand has 253 places, 369 transitions, 2472 flow. Second operand 14 states and 1162 transitions. [2022-11-18 20:22:22,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 1157 transitions, 10299 flow [2022-11-18 20:22:22,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 1157 transitions, 10211 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-11-18 20:22:22,387 INFO L231 Difference]: Finished difference. Result has 270 places, 387 transitions, 2719 flow [2022-11-18 20:22:22,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2451, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2719, PETRI_PLACES=270, PETRI_TRANSITIONS=387} [2022-11-18 20:22:22,389 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 145 predicate places. [2022-11-18 20:22:22,389 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 387 transitions, 2719 flow [2022-11-18 20:22:22,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:22,390 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:22:22,390 INFO L209 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] [2022-11-18 20:22:22,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-18 20:22:22,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:22:22,595 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)] === [2022-11-18 20:22:22,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:22,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1227019495, now seen corresponding path program 3 times [2022-11-18 20:22:22,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:22,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561203322] [2022-11-18 20:22:22,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:22,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:23,385 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-18 20:22:23,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:23,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561203322] [2022-11-18 20:22:23,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561203322] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:23,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698738943] [2022-11-18 20:22:23,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:22:23,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:23,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:23,387 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:23,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:22:23,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 20:22:23,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:22:23,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:22:23,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:23,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:22:23,898 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:22:23,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:22:23,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698738943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:22:23,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:22:23,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-18 20:22:23,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352478807] [2022-11-18 20:22:23,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:22:23,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:22:23,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:23,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:22:23,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:22:23,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2022-11-18 20:22:23,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 387 transitions, 2719 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:23,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:22:23,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2022-11-18 20:22:23,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:22:32,383 INFO L130 PetriNetUnfolder]: 10747/27656 cut-off events. [2022-11-18 20:22:32,383 INFO L131 PetriNetUnfolder]: For 70540/70576 co-relation queries the response was YES. [2022-11-18 20:22:32,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94826 conditions, 27656 events. 10747/27656 cut-off events. For 70540/70576 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 259681 event pairs, 3362 based on Foata normal form. 28/27131 useless extension candidates. Maximal degree in co-relation 94764. Up to 10481 conditions per place. [2022-11-18 20:22:32,811 INFO L137 encePairwiseOnDemand]: 114/128 looper letters, 1014 selfloop transitions, 38 changer transitions 0/1137 dead transitions. [2022-11-18 20:22:32,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 1137 transitions, 10164 flow [2022-11-18 20:22:32,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:22:32,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 20:22:32,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1203 transitions. [2022-11-18 20:22:32,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6713169642857143 [2022-11-18 20:22:32,814 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1203 transitions. [2022-11-18 20:22:32,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1203 transitions. [2022-11-18 20:22:32,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:22:32,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1203 transitions. [2022-11-18 20:22:32,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 85.92857142857143) internal successors, (1203), 14 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:32,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:32,821 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:32,821 INFO L175 Difference]: Start difference. First operand has 270 places, 387 transitions, 2719 flow. Second operand 14 states and 1203 transitions. [2022-11-18 20:22:32,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 1137 transitions, 10164 flow [2022-11-18 20:22:33,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 1137 transitions, 10051 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-11-18 20:22:33,044 INFO L231 Difference]: Finished difference. Result has 286 places, 405 transitions, 3002 flow [2022-11-18 20:22:33,044 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2687, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3002, PETRI_PLACES=286, PETRI_TRANSITIONS=405} [2022-11-18 20:22:33,045 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 161 predicate places. [2022-11-18 20:22:33,045 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 405 transitions, 3002 flow [2022-11-18 20:22:33,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:33,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:22:33,046 INFO L209 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] [2022-11-18 20:22:33,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:33,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:33,251 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)] === [2022-11-18 20:22:33,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:33,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1731870016, now seen corresponding path program 2 times [2022-11-18 20:22:33,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:33,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778570224] [2022-11-18 20:22:33,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:33,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-18 20:22:34,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:34,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778570224] [2022-11-18 20:22:34,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778570224] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:34,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680563523] [2022-11-18 20:22:34,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:22:34,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:34,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:34,206 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:34,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:22:34,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:22:34,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:22:34,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:22:34,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:34,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:22:34,728 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:22:34,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:22:34,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680563523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:22:34,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:22:34,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-18 20:22:34,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758199388] [2022-11-18 20:22:34,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:22:34,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:22:34,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:34,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:22:34,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:22:34,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2022-11-18 20:22:34,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 405 transitions, 3002 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:34,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:22:34,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2022-11-18 20:22:34,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:22:44,211 INFO L130 PetriNetUnfolder]: 12502/32387 cut-off events. [2022-11-18 20:22:44,211 INFO L131 PetriNetUnfolder]: For 99562/99613 co-relation queries the response was YES. [2022-11-18 20:22:44,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113500 conditions, 32387 events. 12502/32387 cut-off events. For 99562/99613 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 313875 event pairs, 3536 based on Foata normal form. 33/31731 useless extension candidates. Maximal degree in co-relation 113429. Up to 8192 conditions per place. [2022-11-18 20:22:44,755 INFO L137 encePairwiseOnDemand]: 114/128 looper letters, 1254 selfloop transitions, 41 changer transitions 0/1380 dead transitions. [2022-11-18 20:22:44,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1380 transitions, 12999 flow [2022-11-18 20:22:44,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:22:44,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 20:22:44,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1195 transitions. [2022-11-18 20:22:44,759 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6668526785714286 [2022-11-18 20:22:44,760 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1195 transitions. [2022-11-18 20:22:44,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1195 transitions. [2022-11-18 20:22:44,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:22:44,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1195 transitions. [2022-11-18 20:22:44,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 85.35714285714286) internal successors, (1195), 14 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:44,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:44,768 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:44,768 INFO L175 Difference]: Start difference. First operand has 286 places, 405 transitions, 3002 flow. Second operand 14 states and 1195 transitions. [2022-11-18 20:22:44,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 1380 transitions, 12999 flow [2022-11-18 20:22:45,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 1380 transitions, 12875 flow, removed 16 selfloop flow, removed 6 redundant places. [2022-11-18 20:22:45,106 INFO L231 Difference]: Finished difference. Result has 300 places, 426 transitions, 3396 flow [2022-11-18 20:22:45,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3396, PETRI_PLACES=300, PETRI_TRANSITIONS=426} [2022-11-18 20:22:45,107 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 175 predicate places. [2022-11-18 20:22:45,107 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 426 transitions, 3396 flow [2022-11-18 20:22:45,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:45,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:22:45,108 INFO L209 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] [2022-11-18 20:22:45,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-18 20:22:45,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:22:45,314 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)] === [2022-11-18 20:22:45,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:45,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1716423809, now seen corresponding path program 4 times [2022-11-18 20:22:45,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:45,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544918637] [2022-11-18 20:22:45,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:45,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:46,101 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-18 20:22:46,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:46,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544918637] [2022-11-18 20:22:46,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544918637] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:46,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106800442] [2022-11-18 20:22:46,102 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:22:46,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:46,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:46,104 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:46,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7417943d-d2af-4f65-b2c1-532df591f2b6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:22:46,369 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:22:46,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:22:46,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:22:46,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:46,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:22:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-18 20:22:46,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:22:46,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106800442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:22:46,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:22:46,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-18 20:22:46,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708158477] [2022-11-18 20:22:46,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:22:46,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:22:46,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:46,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:22:46,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:22:46,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2022-11-18 20:22:46,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 426 transitions, 3396 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:46,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:22:46,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2022-11-18 20:22:46,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand