./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a 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_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:56:21,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:56:21,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:56:21,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:56:21,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:56:21,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:56:21,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:56:21,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:56:21,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:56:21,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:56:21,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:56:21,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:56:21,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:56:21,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:56:21,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:56:21,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:56:21,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:56:21,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:56:21,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:56:21,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:56:21,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:56:21,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:56:21,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:56:21,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:56:21,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:56:21,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:56:21,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:56:21,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:56:21,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:56:21,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:56:21,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:56:21,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:56:21,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:56:21,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:56:21,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:56:21,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:56:21,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:56:21,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:56:21,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:56:21,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:56:21,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:56:21,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:56:21,668 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:56:21,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:56:21,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:56:21,669 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:56:21,670 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:56:21,670 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:56:21,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:56:21,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:56:21,671 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:56:21,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:56:21,672 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:56:21,672 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:56:21,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:56:21,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:56:21,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:56:21,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:56:21,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:56:21,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:56:21,674 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:56:21,674 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:56:21,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:56:21,674 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:56:21,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:56:21,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:56:21,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:56:21,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:56:21,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:21,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:56:21,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:56:21,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:56:21,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:56:21,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:56:21,677 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:56:21,677 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:56:21,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:56:21,677 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_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 [2022-11-02 20:56:21,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:56:21,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:56:21,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:56:21,958 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:56:21,959 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:56:21,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2022-11-02 20:56:22,043 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/data/d76f83669/680ee938671041f2b8d002080adbaeab/FLAGab951f477 [2022-11-02 20:56:22,705 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:56:22,706 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2022-11-02 20:56:22,724 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/data/d76f83669/680ee938671041f2b8d002080adbaeab/FLAGab951f477 [2022-11-02 20:56:22,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/data/d76f83669/680ee938671041f2b8d002080adbaeab [2022-11-02 20:56:22,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:56:22,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:56:22,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:22,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:56:22,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:56:22,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:22" (1/1) ... [2022-11-02 20:56:22,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56089c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:22, skipping insertion in model container [2022-11-02 20:56:22,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:22" (1/1) ... [2022-11-02 20:56:22,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:56:23,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:56:23,565 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2022-11-02 20:56:23,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:23,635 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:56:23,692 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2022-11-02 20:56:23,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:23,786 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:56:23,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:23 WrapperNode [2022-11-02 20:56:23,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:23,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:23,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:56:23,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:56:23,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:23" (1/1) ... [2022-11-02 20:56:23,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:23" (1/1) ... [2022-11-02 20:56:23,873 INFO L138 Inliner]: procedures = 273, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 147 [2022-11-02 20:56:23,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:23,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:56:23,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:56:23,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:56:23,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:23" (1/1) ... [2022-11-02 20:56:23,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:23" (1/1) ... [2022-11-02 20:56:23,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:23" (1/1) ... [2022-11-02 20:56:23,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:23" (1/1) ... [2022-11-02 20:56:23,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:23" (1/1) ... [2022-11-02 20:56:23,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:23" (1/1) ... [2022-11-02 20:56:23,908 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:23" (1/1) ... [2022-11-02 20:56:23,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:23" (1/1) ... [2022-11-02 20:56:23,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:56:23,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:56:23,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:56:23,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:56:23,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:23" (1/1) ... [2022-11-02 20:56:23,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:23,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:23,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:56:23,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:56:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:56:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:56:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:56:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:56:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:56:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:56:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-02 20:56:24,015 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-02 20:56:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:56:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:56:24,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:56:24,017 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:56:24,252 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:56:24,254 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:56:24,580 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:56:24,595 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:56:24,596 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-02 20:56:24,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:24 BoogieIcfgContainer [2022-11-02 20:56:24,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:56:24,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:56:24,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:56:24,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:56:24,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:56:22" (1/3) ... [2022-11-02 20:56:24,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6055d631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:24, skipping insertion in model container [2022-11-02 20:56:24,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:23" (2/3) ... [2022-11-02 20:56:24,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6055d631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:24, skipping insertion in model container [2022-11-02 20:56:24,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:24" (3/3) ... [2022-11-02 20:56:24,627 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2022-11-02 20:56:24,637 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:56:24,648 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:56:24,649 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-02 20:56:24,649 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:56:24,779 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 20:56:24,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 160 transitions, 328 flow [2022-11-02 20:56:24,930 INFO L130 PetriNetUnfolder]: 17/213 cut-off events. [2022-11-02 20:56:24,930 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:56:24,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 213 events. 17/213 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 595 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 116. Up to 4 conditions per place. [2022-11-02 20:56:24,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 160 transitions, 328 flow [2022-11-02 20:56:24,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 160 transitions, 328 flow [2022-11-02 20:56:24,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:56:24,962 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;@27157c54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:56:24,963 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-02 20:56:24,976 INFO L130 PetriNetUnfolder]: 1/51 cut-off events. [2022-11-02 20:56:24,976 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:56:24,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:24,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:24,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-02 20:56:24,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:24,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1440069147, now seen corresponding path program 1 times [2022-11-02 20:56:24,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:24,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837116846] [2022-11-02 20:56:24,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:25,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:25,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:25,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837116846] [2022-11-02 20:56:25,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837116846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:25,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:25,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:25,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000560917] [2022-11-02 20:56:25,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:25,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:25,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:25,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:25,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:25,414 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 160 [2022-11-02 20:56:25,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 160 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:25,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:25,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 160 [2022-11-02 20:56:25,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:25,519 INFO L130 PetriNetUnfolder]: 0/167 cut-off events. [2022-11-02 20:56:25,519 INFO L131 PetriNetUnfolder]: For 9/20 co-relation queries the response was YES. [2022-11-02 20:56:25,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 167 events. 0/167 cut-off events. For 9/20 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 173 event pairs, 0 based on Foata normal form. 18/172 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-02 20:56:25,521 INFO L137 encePairwiseOnDemand]: 146/160 looper letters, 9 selfloop transitions, 2 changer transitions 0/150 dead transitions. [2022-11-02 20:56:25,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 150 transitions, 330 flow [2022-11-02 20:56:25,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:25,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2022-11-02 20:56:25,537 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.93125 [2022-11-02 20:56:25,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2022-11-02 20:56:25,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2022-11-02 20:56:25,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:25,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2022-11-02 20:56:25,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:25,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:25,554 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:25,556 INFO L175 Difference]: Start difference. First operand has 151 places, 160 transitions, 328 flow. Second operand 3 states and 447 transitions. [2022-11-02 20:56:25,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 150 transitions, 330 flow [2022-11-02 20:56:25,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 150 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:56:25,565 INFO L231 Difference]: Finished difference. Result has 153 places, 148 transitions, 312 flow [2022-11-02 20:56:25,568 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=153, PETRI_TRANSITIONS=148} [2022-11-02 20:56:25,572 INFO L287 CegarLoopForPetriNet]: 151 programPoint places, 2 predicate places. [2022-11-02 20:56:25,572 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 148 transitions, 312 flow [2022-11-02 20:56:25,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:25,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:25,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:25,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:56:25,574 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-02 20:56:25,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:25,575 INFO L85 PathProgramCache]: Analyzing trace with hash -953838597, now seen corresponding path program 1 times [2022-11-02 20:56:25,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:25,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361030372] [2022-11-02 20:56:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:25,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:25,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:25,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:25,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361030372] [2022-11-02 20:56:25,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361030372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:25,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:25,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:25,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124655120] [2022-11-02 20:56:25,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:25,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:25,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:25,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:25,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:25,719 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 160 [2022-11-02 20:56:25,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 148 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:25,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:25,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 160 [2022-11-02 20:56:25,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:25,847 INFO L130 PetriNetUnfolder]: 9/415 cut-off events. [2022-11-02 20:56:25,848 INFO L131 PetriNetUnfolder]: For 12/19 co-relation queries the response was YES. [2022-11-02 20:56:25,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 415 events. 9/415 cut-off events. For 12/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1602 event pairs, 2 based on Foata normal form. 1/374 useless extension candidates. Maximal degree in co-relation 404. Up to 17 conditions per place. [2022-11-02 20:56:25,851 INFO L137 encePairwiseOnDemand]: 156/160 looper letters, 10 selfloop transitions, 3 changer transitions 0/153 dead transitions. [2022-11-02 20:56:25,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 153 transitions, 351 flow [2022-11-02 20:56:25,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:25,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:25,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2022-11-02 20:56:25,855 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9041666666666667 [2022-11-02 20:56:25,855 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2022-11-02 20:56:25,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2022-11-02 20:56:25,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:25,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2022-11-02 20:56:25,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:25,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:25,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:25,861 INFO L175 Difference]: Start difference. First operand has 153 places, 148 transitions, 312 flow. Second operand 3 states and 434 transitions. [2022-11-02 20:56:25,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 153 transitions, 351 flow [2022-11-02 20:56:25,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 153 transitions, 347 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:56:25,866 INFO L231 Difference]: Finished difference. Result has 155 places, 150 transitions, 330 flow [2022-11-02 20:56:25,867 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=155, PETRI_TRANSITIONS=150} [2022-11-02 20:56:25,867 INFO L287 CegarLoopForPetriNet]: 151 programPoint places, 4 predicate places. [2022-11-02 20:56:25,868 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 150 transitions, 330 flow [2022-11-02 20:56:25,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:25,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:25,869 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:25,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:56:25,869 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-02 20:56:25,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:25,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1108104214, now seen corresponding path program 1 times [2022-11-02 20:56:25,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:25,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107479182] [2022-11-02 20:56:25,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:25,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:56:25,906 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:56:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:56:25,964 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:56:25,967 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:56:25,969 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2022-11-02 20:56:25,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2022-11-02 20:56:25,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2022-11-02 20:56:25,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2022-11-02 20:56:25,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2022-11-02 20:56:25,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2022-11-02 20:56:25,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2022-11-02 20:56:25,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2022-11-02 20:56:25,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2022-11-02 20:56:25,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2022-11-02 20:56:25,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2022-11-02 20:56:25,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2022-11-02 20:56:25,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2022-11-02 20:56:25,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2022-11-02 20:56:25,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:56:25,978 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:56:25,984 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:56:25,985 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:56:26,062 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:56:26,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 220 transitions, 458 flow [2022-11-02 20:56:26,160 INFO L130 PetriNetUnfolder]: 31/357 cut-off events. [2022-11-02 20:56:26,161 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 20:56:26,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 357 events. 31/357 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1297 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 215. Up to 8 conditions per place. [2022-11-02 20:56:26,166 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 220 transitions, 458 flow [2022-11-02 20:56:26,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 220 transitions, 458 flow [2022-11-02 20:56:26,171 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:56:26,172 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;@27157c54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:56:26,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-02 20:56:26,179 INFO L130 PetriNetUnfolder]: 1/51 cut-off events. [2022-11-02 20:56:26,180 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:56:26,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:26,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:26,180 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-02 20:56:26,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:26,181 INFO L85 PathProgramCache]: Analyzing trace with hash 404391653, now seen corresponding path program 1 times [2022-11-02 20:56:26,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:26,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064319656] [2022-11-02 20:56:26,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:26,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:26,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:26,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064319656] [2022-11-02 20:56:26,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064319656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:26,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:26,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:26,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795717568] [2022-11-02 20:56:26,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:26,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:26,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:26,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:26,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:26,265 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 220 [2022-11-02 20:56:26,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 220 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:26,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:26,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 220 [2022-11-02 20:56:26,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:26,392 INFO L130 PetriNetUnfolder]: 2/298 cut-off events. [2022-11-02 20:56:26,392 INFO L131 PetriNetUnfolder]: For 31/89 co-relation queries the response was YES. [2022-11-02 20:56:26,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 298 events. 2/298 cut-off events. For 31/89 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 775 event pairs, 0 based on Foata normal form. 47/318 useless extension candidates. Maximal degree in co-relation 181. Up to 16 conditions per place. [2022-11-02 20:56:26,398 INFO L137 encePairwiseOnDemand]: 200/220 looper letters, 13 selfloop transitions, 2 changer transitions 0/206 dead transitions. [2022-11-02 20:56:26,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 206 transitions, 460 flow [2022-11-02 20:56:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:26,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:26,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2022-11-02 20:56:26,401 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9287878787878788 [2022-11-02 20:56:26,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2022-11-02 20:56:26,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2022-11-02 20:56:26,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:26,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2022-11-02 20:56:26,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:26,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:26,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:26,407 INFO L175 Difference]: Start difference. First operand has 206 places, 220 transitions, 458 flow. Second operand 3 states and 613 transitions. [2022-11-02 20:56:26,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 206 transitions, 460 flow [2022-11-02 20:56:26,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 206 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:56:26,413 INFO L231 Difference]: Finished difference. Result has 208 places, 203 transitions, 434 flow [2022-11-02 20:56:26,413 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=208, PETRI_TRANSITIONS=203} [2022-11-02 20:56:26,414 INFO L287 CegarLoopForPetriNet]: 206 programPoint places, 2 predicate places. [2022-11-02 20:56:26,414 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 203 transitions, 434 flow [2022-11-02 20:56:26,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:26,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:26,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:26,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:56:26,416 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-02 20:56:26,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:26,416 INFO L85 PathProgramCache]: Analyzing trace with hash 356521141, now seen corresponding path program 1 times [2022-11-02 20:56:26,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:26,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443116799] [2022-11-02 20:56:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:26,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:26,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:26,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443116799] [2022-11-02 20:56:26,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443116799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:26,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:26,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:26,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130735390] [2022-11-02 20:56:26,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:26,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:26,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:26,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:26,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:26,468 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 220 [2022-11-02 20:56:26,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 203 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:26,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:26,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 220 [2022-11-02 20:56:26,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:27,015 INFO L130 PetriNetUnfolder]: 120/2228 cut-off events. [2022-11-02 20:56:27,016 INFO L131 PetriNetUnfolder]: For 106/174 co-relation queries the response was YES. [2022-11-02 20:56:27,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 2228 events. 120/2228 cut-off events. For 106/174 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 18906 event pairs, 32 based on Foata normal form. 6/1979 useless extension candidates. Maximal degree in co-relation 2465. Up to 156 conditions per place. [2022-11-02 20:56:27,038 INFO L137 encePairwiseOnDemand]: 213/220 looper letters, 18 selfloop transitions, 5 changer transitions 0/213 dead transitions. [2022-11-02 20:56:27,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 213 transitions, 511 flow [2022-11-02 20:56:27,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:27,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:27,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2022-11-02 20:56:27,041 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.896969696969697 [2022-11-02 20:56:27,041 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2022-11-02 20:56:27,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2022-11-02 20:56:27,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:27,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2022-11-02 20:56:27,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:27,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:27,046 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:27,047 INFO L175 Difference]: Start difference. First operand has 208 places, 203 transitions, 434 flow. Second operand 3 states and 592 transitions. [2022-11-02 20:56:27,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 213 transitions, 511 flow [2022-11-02 20:56:27,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 213 transitions, 509 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:56:27,053 INFO L231 Difference]: Finished difference. Result has 211 places, 208 transitions, 476 flow [2022-11-02 20:56:27,053 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=211, PETRI_TRANSITIONS=208} [2022-11-02 20:56:27,056 INFO L287 CegarLoopForPetriNet]: 206 programPoint places, 5 predicate places. [2022-11-02 20:56:27,056 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 208 transitions, 476 flow [2022-11-02 20:56:27,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:27,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:27,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:27,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:56:27,057 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-02 20:56:27,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:27,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1574224110, now seen corresponding path program 1 times [2022-11-02 20:56:27,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:27,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929065129] [2022-11-02 20:56:27,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:27,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:27,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:27,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929065129] [2022-11-02 20:56:27,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929065129] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:27,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878622358] [2022-11-02 20:56:27,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:27,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:27,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:27,257 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:27,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:56:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:27,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:56:27,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:56:27,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:27,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878622358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:27,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:56:27,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-02 20:56:27,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137614708] [2022-11-02 20:56:27,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:27,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:27,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:27,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:27,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:27,476 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 220 [2022-11-02 20:56:27,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 208 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:27,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:27,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 220 [2022-11-02 20:56:27,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:28,136 INFO L130 PetriNetUnfolder]: 165/3456 cut-off events. [2022-11-02 20:56:28,137 INFO L131 PetriNetUnfolder]: For 297/410 co-relation queries the response was YES. [2022-11-02 20:56:28,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4118 conditions, 3456 events. 165/3456 cut-off events. For 297/410 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 34057 event pairs, 50 based on Foata normal form. 5/3141 useless extension candidates. Maximal degree in co-relation 3411. Up to 242 conditions per place. [2022-11-02 20:56:28,167 INFO L137 encePairwiseOnDemand]: 214/220 looper letters, 25 selfloop transitions, 8 changer transitions 0/220 dead transitions. [2022-11-02 20:56:28,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 220 transitions, 594 flow [2022-11-02 20:56:28,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:28,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:28,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 583 transitions. [2022-11-02 20:56:28,170 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2022-11-02 20:56:28,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 583 transitions. [2022-11-02 20:56:28,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 583 transitions. [2022-11-02 20:56:28,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:28,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 583 transitions. [2022-11-02 20:56:28,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:28,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:28,176 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:28,176 INFO L175 Difference]: Start difference. First operand has 211 places, 208 transitions, 476 flow. Second operand 3 states and 583 transitions. [2022-11-02 20:56:28,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 220 transitions, 594 flow [2022-11-02 20:56:28,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 220 transitions, 576 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:56:28,186 INFO L231 Difference]: Finished difference. Result has 213 places, 214 transitions, 532 flow [2022-11-02 20:56:28,187 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=532, PETRI_PLACES=213, PETRI_TRANSITIONS=214} [2022-11-02 20:56:28,191 INFO L287 CegarLoopForPetriNet]: 206 programPoint places, 7 predicate places. [2022-11-02 20:56:28,191 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 214 transitions, 532 flow [2022-11-02 20:56:28,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:28,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:28,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:28,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:28,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:28,417 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-02 20:56:28,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:28,418 INFO L85 PathProgramCache]: Analyzing trace with hash -329867138, now seen corresponding path program 1 times [2022-11-02 20:56:28,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:28,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628327185] [2022-11-02 20:56:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:28,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:28,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:28,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628327185] [2022-11-02 20:56:28,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628327185] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:28,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041899822] [2022-11-02 20:56:28,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:28,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:28,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:28,585 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:28,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:56:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:28,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:56:28,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:28,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:28,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:28,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041899822] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:28,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:28,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:56:28,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54039380] [2022-11-02 20:56:28,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:28,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:56:28,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:28,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:56:28,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:56:28,811 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 220 [2022-11-02 20:56:28,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 214 transitions, 532 flow. Second operand has 10 states, 10 states have (on average 192.3) internal successors, (1923), 10 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:28,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:28,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 220 [2022-11-02 20:56:28,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:28,983 INFO L130 PetriNetUnfolder]: 4/307 cut-off events. [2022-11-02 20:56:28,983 INFO L131 PetriNetUnfolder]: For 8/11 co-relation queries the response was YES. [2022-11-02 20:56:28,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 307 events. 4/307 cut-off events. For 8/11 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 908 event pairs, 2 based on Foata normal form. 2/288 useless extension candidates. Maximal degree in co-relation 351. Up to 12 conditions per place. [2022-11-02 20:56:28,986 INFO L137 encePairwiseOnDemand]: 215/220 looper letters, 9 selfloop transitions, 7 changer transitions 0/160 dead transitions. [2022-11-02 20:56:28,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 160 transitions, 390 flow [2022-11-02 20:56:28,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:56:28,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:56:28,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1728 transitions. [2022-11-02 20:56:28,991 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8727272727272727 [2022-11-02 20:56:28,991 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1728 transitions. [2022-11-02 20:56:28,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1728 transitions. [2022-11-02 20:56:28,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:28,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1728 transitions. [2022-11-02 20:56:28,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 192.0) internal successors, (1728), 9 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:29,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 220.0) internal successors, (2200), 10 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:29,003 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 220.0) internal successors, (2200), 10 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:29,004 INFO L175 Difference]: Start difference. First operand has 213 places, 214 transitions, 532 flow. Second operand 9 states and 1728 transitions. [2022-11-02 20:56:29,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 160 transitions, 390 flow [2022-11-02 20:56:29,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 160 transitions, 380 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-11-02 20:56:29,009 INFO L231 Difference]: Finished difference. Result has 169 places, 156 transitions, 354 flow [2022-11-02 20:56:29,010 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=354, PETRI_PLACES=169, PETRI_TRANSITIONS=156} [2022-11-02 20:56:29,011 INFO L287 CegarLoopForPetriNet]: 206 programPoint places, -37 predicate places. [2022-11-02 20:56:29,011 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 156 transitions, 354 flow [2022-11-02 20:56:29,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 192.3) internal successors, (1923), 10 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:29,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:29,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:29,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:29,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:56:29,230 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-02 20:56:29,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:29,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1649366991, now seen corresponding path program 1 times [2022-11-02 20:56:29,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:29,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839860540] [2022-11-02 20:56:29,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:29,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:29,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:29,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:29,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839860540] [2022-11-02 20:56:29,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839860540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:29,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:29,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:29,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921943281] [2022-11-02 20:56:29,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:29,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:29,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:29,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:29,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:29,311 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 220 [2022-11-02 20:56:29,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 156 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:29,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:29,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 220 [2022-11-02 20:56:29,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:29,587 INFO L130 PetriNetUnfolder]: 175/1066 cut-off events. [2022-11-02 20:56:29,587 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-11-02 20:56:29,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 1066 events. 175/1066 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6445 event pairs, 72 based on Foata normal form. 0/954 useless extension candidates. Maximal degree in co-relation 1542. Up to 233 conditions per place. [2022-11-02 20:56:29,599 INFO L137 encePairwiseOnDemand]: 204/220 looper letters, 35 selfloop transitions, 12 changer transitions 0/177 dead transitions. [2022-11-02 20:56:29,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 177 transitions, 495 flow [2022-11-02 20:56:29,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:29,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:29,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2022-11-02 20:56:29,602 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8545454545454545 [2022-11-02 20:56:29,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2022-11-02 20:56:29,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2022-11-02 20:56:29,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:29,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2022-11-02 20:56:29,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:29,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:29,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:29,607 INFO L175 Difference]: Start difference. First operand has 169 places, 156 transitions, 354 flow. Second operand 3 states and 564 transitions. [2022-11-02 20:56:29,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 177 transitions, 495 flow [2022-11-02 20:56:29,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 177 transitions, 480 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-02 20:56:29,612 INFO L231 Difference]: Finished difference. Result has 168 places, 168 transitions, 443 flow [2022-11-02 20:56:29,613 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=443, PETRI_PLACES=168, PETRI_TRANSITIONS=168} [2022-11-02 20:56:29,614 INFO L287 CegarLoopForPetriNet]: 206 programPoint places, -38 predicate places. [2022-11-02 20:56:29,614 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 168 transitions, 443 flow [2022-11-02 20:56:29,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:29,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:29,615 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:29,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:56:29,616 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-02 20:56:29,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:29,617 INFO L85 PathProgramCache]: Analyzing trace with hash -734559028, now seen corresponding path program 1 times [2022-11-02 20:56:29,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:29,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789153383] [2022-11-02 20:56:29,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:29,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:56:29,653 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:56:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:56:29,687 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:56:29,687 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:56:29,688 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-02 20:56:29,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-11-02 20:56:29,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-11-02 20:56:29,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-11-02 20:56:29,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-11-02 20:56:29,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-11-02 20:56:29,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-11-02 20:56:29,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-11-02 20:56:29,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-11-02 20:56:29,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-11-02 20:56:29,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-11-02 20:56:29,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-11-02 20:56:29,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-11-02 20:56:29,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-11-02 20:56:29,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-11-02 20:56:29,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-11-02 20:56:29,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-11-02 20:56:29,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-11-02 20:56:29,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-11-02 20:56:29,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:56:29,698 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-02 20:56:29,699 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:56:29,699 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:56:29,770 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:56:29,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 280 transitions, 590 flow [2022-11-02 20:56:29,876 INFO L130 PetriNetUnfolder]: 50/546 cut-off events. [2022-11-02 20:56:29,876 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-02 20:56:29,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 546 events. 50/546 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2301 event pairs, 1 based on Foata normal form. 0/461 useless extension candidates. Maximal degree in co-relation 365. Up to 16 conditions per place. [2022-11-02 20:56:29,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 280 transitions, 590 flow [2022-11-02 20:56:29,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 280 transitions, 590 flow [2022-11-02 20:56:29,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:56:29,894 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;@27157c54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:56:29,894 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-02 20:56:29,899 INFO L130 PetriNetUnfolder]: 1/53 cut-off events. [2022-11-02 20:56:29,899 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:56:29,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:29,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:29,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-02 20:56:29,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:29,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2040132188, now seen corresponding path program 1 times [2022-11-02 20:56:29,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:29,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572013636] [2022-11-02 20:56:29,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:29,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:29,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:29,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:29,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572013636] [2022-11-02 20:56:29,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572013636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:29,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:29,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:29,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432253360] [2022-11-02 20:56:29,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:29,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:56:29,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:29,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:56:29,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:56:29,925 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 280 [2022-11-02 20:56:29,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 280 transitions, 590 flow. Second operand has 2 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:29,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:29,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 280 [2022-11-02 20:56:29,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:30,053 INFO L130 PetriNetUnfolder]: 8/500 cut-off events. [2022-11-02 20:56:30,053 INFO L131 PetriNetUnfolder]: For 51/68 co-relation queries the response was YES. [2022-11-02 20:56:30,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 500 events. 8/500 cut-off events. For 51/68 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1869 event pairs, 1 based on Foata normal form. 98/549 useless extension candidates. Maximal degree in co-relation 340. Up to 16 conditions per place. [2022-11-02 20:56:30,068 INFO L137 encePairwiseOnDemand]: 257/280 looper letters, 6 selfloop transitions, 0 changer transitions 0/256 dead transitions. [2022-11-02 20:56:30,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 256 transitions, 554 flow [2022-11-02 20:56:30,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:56:30,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:56:30,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 529 transitions. [2022-11-02 20:56:30,070 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9446428571428571 [2022-11-02 20:56:30,071 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 529 transitions. [2022-11-02 20:56:30,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 529 transitions. [2022-11-02 20:56:30,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:30,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 529 transitions. [2022-11-02 20:56:30,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 264.5) internal successors, (529), 2 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:30,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:30,074 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:30,075 INFO L175 Difference]: Start difference. First operand has 261 places, 280 transitions, 590 flow. Second operand 2 states and 529 transitions. [2022-11-02 20:56:30,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 256 transitions, 554 flow [2022-11-02 20:56:30,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 256 transitions, 554 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:56:30,086 INFO L231 Difference]: Finished difference. Result has 261 places, 256 transitions, 542 flow [2022-11-02 20:56:30,086 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=542, PETRI_PLACES=261, PETRI_TRANSITIONS=256} [2022-11-02 20:56:30,089 INFO L287 CegarLoopForPetriNet]: 261 programPoint places, 0 predicate places. [2022-11-02 20:56:30,089 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 256 transitions, 542 flow [2022-11-02 20:56:30,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:30,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:30,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:30,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:56:30,091 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-02 20:56:30,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:30,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1152628507, now seen corresponding path program 1 times [2022-11-02 20:56:30,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:30,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529324549] [2022-11-02 20:56:30,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:30,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:30,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:30,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529324549] [2022-11-02 20:56:30,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529324549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:30,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:30,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:30,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400265054] [2022-11-02 20:56:30,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:30,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:30,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:30,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:30,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:30,166 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 280 [2022-11-02 20:56:30,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 256 transitions, 542 flow. Second operand has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:30,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:30,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 280 [2022-11-02 20:56:30,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:30,311 INFO L130 PetriNetUnfolder]: 7/472 cut-off events. [2022-11-02 20:56:30,311 INFO L131 PetriNetUnfolder]: For 43/115 co-relation queries the response was YES. [2022-11-02 20:56:30,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 472 events. 7/472 cut-off events. For 43/115 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1688 event pairs, 1 based on Foata normal form. 1/428 useless extension candidates. Maximal degree in co-relation 530. Up to 30 conditions per place. [2022-11-02 20:56:30,319 INFO L137 encePairwiseOnDemand]: 277/280 looper letters, 15 selfloop transitions, 2 changer transitions 0/260 dead transitions. [2022-11-02 20:56:30,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 260 transitions, 584 flow [2022-11-02 20:56:30,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:30,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:30,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 747 transitions. [2022-11-02 20:56:30,322 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8892857142857142 [2022-11-02 20:56:30,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 747 transitions. [2022-11-02 20:56:30,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 747 transitions. [2022-11-02 20:56:30,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:30,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 747 transitions. [2022-11-02 20:56:30,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:30,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:30,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:30,329 INFO L175 Difference]: Start difference. First operand has 261 places, 256 transitions, 542 flow. Second operand 3 states and 747 transitions. [2022-11-02 20:56:30,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 260 transitions, 584 flow [2022-11-02 20:56:30,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 260 transitions, 584 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:56:30,335 INFO L231 Difference]: Finished difference. Result has 264 places, 257 transitions, 554 flow [2022-11-02 20:56:30,336 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=554, PETRI_PLACES=264, PETRI_TRANSITIONS=257} [2022-11-02 20:56:30,337 INFO L287 CegarLoopForPetriNet]: 261 programPoint places, 3 predicate places. [2022-11-02 20:56:30,337 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 257 transitions, 554 flow [2022-11-02 20:56:30,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:30,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:30,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:30,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:56:30,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-02 20:56:30,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:30,339 INFO L85 PathProgramCache]: Analyzing trace with hash 788075759, now seen corresponding path program 1 times [2022-11-02 20:56:30,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:30,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838571954] [2022-11-02 20:56:30,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:30,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:30,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:30,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838571954] [2022-11-02 20:56:30,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838571954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:30,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:30,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:30,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541942294] [2022-11-02 20:56:30,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:30,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:30,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:30,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:30,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:30,378 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 280 [2022-11-02 20:56:30,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 257 transitions, 554 flow. Second operand has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:30,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:30,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 280 [2022-11-02 20:56:30,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:32,752 INFO L130 PetriNetUnfolder]: 910/11324 cut-off events. [2022-11-02 20:56:32,752 INFO L131 PetriNetUnfolder]: For 536/833 co-relation queries the response was YES. [2022-11-02 20:56:32,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13077 conditions, 11324 events. 910/11324 cut-off events. For 536/833 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 137908 event pairs, 290 based on Foata normal form. 23/10006 useless extension candidates. Maximal degree in co-relation 13069. Up to 1038 conditions per place. [2022-11-02 20:56:32,898 INFO L137 encePairwiseOnDemand]: 270/280 looper letters, 25 selfloop transitions, 7 changer transitions 0/271 dead transitions. [2022-11-02 20:56:32,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 271 transitions, 667 flow [2022-11-02 20:56:32,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:32,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:32,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 749 transitions. [2022-11-02 20:56:32,901 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8916666666666667 [2022-11-02 20:56:32,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 749 transitions. [2022-11-02 20:56:32,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 749 transitions. [2022-11-02 20:56:32,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:32,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 749 transitions. [2022-11-02 20:56:32,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:32,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:32,906 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:32,906 INFO L175 Difference]: Start difference. First operand has 264 places, 257 transitions, 554 flow. Second operand 3 states and 749 transitions. [2022-11-02 20:56:32,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 271 transitions, 667 flow [2022-11-02 20:56:32,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 271 transitions, 665 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:56:32,913 INFO L231 Difference]: Finished difference. Result has 267 places, 264 transitions, 614 flow [2022-11-02 20:56:32,913 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=614, PETRI_PLACES=267, PETRI_TRANSITIONS=264} [2022-11-02 20:56:32,914 INFO L287 CegarLoopForPetriNet]: 261 programPoint places, 6 predicate places. [2022-11-02 20:56:32,914 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 264 transitions, 614 flow [2022-11-02 20:56:32,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:32,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:32,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:32,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:56:32,916 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-02 20:56:32,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:32,916 INFO L85 PathProgramCache]: Analyzing trace with hash -666687156, now seen corresponding path program 1 times [2022-11-02 20:56:32,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:32,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454940185] [2022-11-02 20:56:32,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:32,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:32,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:32,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454940185] [2022-11-02 20:56:32,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454940185] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:32,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992001559] [2022-11-02 20:56:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:32,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:32,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:32,989 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:32,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:56:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:33,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:56:33,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:56:33,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:33,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992001559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:33,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:56:33,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-02 20:56:33,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021164682] [2022-11-02 20:56:33,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:33,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:33,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:33,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:33,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:33,150 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 280 [2022-11-02 20:56:33,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 264 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:33,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:33,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 280 [2022-11-02 20:56:33,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:36,570 INFO L130 PetriNetUnfolder]: 1231/17999 cut-off events. [2022-11-02 20:56:36,571 INFO L131 PetriNetUnfolder]: For 1717/4228 co-relation queries the response was YES. [2022-11-02 20:56:36,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22081 conditions, 17999 events. 1231/17999 cut-off events. For 1717/4228 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 248751 event pairs, 395 based on Foata normal form. 18/16356 useless extension candidates. Maximal degree in co-relation 22072. Up to 1514 conditions per place. [2022-11-02 20:56:36,782 INFO L137 encePairwiseOnDemand]: 273/280 looper letters, 35 selfloop transitions, 10 changer transitions 0/281 dead transitions. [2022-11-02 20:56:36,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 281 transitions, 780 flow [2022-11-02 20:56:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:36,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:36,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 738 transitions. [2022-11-02 20:56:36,785 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8785714285714286 [2022-11-02 20:56:36,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 738 transitions. [2022-11-02 20:56:36,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 738 transitions. [2022-11-02 20:56:36,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:36,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 738 transitions. [2022-11-02 20:56:36,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:36,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:36,790 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:36,791 INFO L175 Difference]: Start difference. First operand has 267 places, 264 transitions, 614 flow. Second operand 3 states and 738 transitions. [2022-11-02 20:56:36,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 281 transitions, 780 flow [2022-11-02 20:56:36,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 281 transitions, 754 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:56:36,800 INFO L231 Difference]: Finished difference. Result has 269 places, 272 transitions, 686 flow [2022-11-02 20:56:36,801 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=686, PETRI_PLACES=269, PETRI_TRANSITIONS=272} [2022-11-02 20:56:36,801 INFO L287 CegarLoopForPetriNet]: 261 programPoint places, 8 predicate places. [2022-11-02 20:56:36,802 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 272 transitions, 686 flow [2022-11-02 20:56:36,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:36,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:36,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:36,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:37,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:37,021 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-02 20:56:37,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:37,022 INFO L85 PathProgramCache]: Analyzing trace with hash 31085060, now seen corresponding path program 1 times [2022-11-02 20:56:37,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:37,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767792241] [2022-11-02 20:56:37,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:37,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:37,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:37,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:37,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767792241] [2022-11-02 20:56:37,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767792241] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:37,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862622473] [2022-11-02 20:56:37,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:37,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:37,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:37,128 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:37,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:56:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:37,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:56:37,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:37,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:37,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:37,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862622473] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:37,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:37,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:56:37,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944093023] [2022-11-02 20:56:37,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:37,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:56:37,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:37,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:56:37,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:56:37,358 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 280 [2022-11-02 20:56:37,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 272 transitions, 686 flow. Second operand has 10 states, 10 states have (on average 244.3) internal successors, (2443), 10 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:37,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:37,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 280 [2022-11-02 20:56:37,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:39,713 INFO L130 PetriNetUnfolder]: 542/11427 cut-off events. [2022-11-02 20:56:39,713 INFO L131 PetriNetUnfolder]: For 1123/1316 co-relation queries the response was YES. [2022-11-02 20:56:39,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13400 conditions, 11427 events. 542/11427 cut-off events. For 1123/1316 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 149520 event pairs, 163 based on Foata normal form. 15/10293 useless extension candidates. Maximal degree in co-relation 13390. Up to 682 conditions per place. [2022-11-02 20:56:39,858 INFO L137 encePairwiseOnDemand]: 274/280 looper letters, 16 selfloop transitions, 9 changer transitions 0/282 dead transitions. [2022-11-02 20:56:39,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 282 transitions, 758 flow [2022-11-02 20:56:39,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:56:39,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:56:39,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2205 transitions. [2022-11-02 20:56:39,871 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-11-02 20:56:39,871 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2205 transitions. [2022-11-02 20:56:39,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2205 transitions. [2022-11-02 20:56:39,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:39,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2205 transitions. [2022-11-02 20:56:39,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:39,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 280.0) internal successors, (2800), 10 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:39,885 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 280.0) internal successors, (2800), 10 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:39,885 INFO L175 Difference]: Start difference. First operand has 269 places, 272 transitions, 686 flow. Second operand 9 states and 2205 transitions. [2022-11-02 20:56:39,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 282 transitions, 758 flow [2022-11-02 20:56:39,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 282 transitions, 738 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:56:39,894 INFO L231 Difference]: Finished difference. Result has 278 places, 278 transitions, 716 flow [2022-11-02 20:56:39,894 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=716, PETRI_PLACES=278, PETRI_TRANSITIONS=278} [2022-11-02 20:56:39,895 INFO L287 CegarLoopForPetriNet]: 261 programPoint places, 17 predicate places. [2022-11-02 20:56:39,896 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 278 transitions, 716 flow [2022-11-02 20:56:39,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 244.3) internal successors, (2443), 10 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:39,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:39,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:39,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:40,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6a3345-2208-4eb5-be25-7df81ea0029f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:40,113 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-02 20:56:40,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:40,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1860542049, now seen corresponding path program 1 times [2022-11-02 20:56:40,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:40,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014942383] [2022-11-02 20:56:40,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:40,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:40,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:40,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:40,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014942383] [2022-11-02 20:56:40,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014942383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:40,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:40,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:40,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807496091] [2022-11-02 20:56:40,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:40,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:40,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:40,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:40,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:40,161 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 280 [2022-11-02 20:56:40,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 278 transitions, 716 flow. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:40,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:40,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 280 [2022-11-02 20:56:40,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand