./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/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_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/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_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/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 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --- 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 20:24:10,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:24:10,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:24:11,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:24:11,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:24:11,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:24:11,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:24:11,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:24:11,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:24:11,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:24:11,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:24:11,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:24:11,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:24:11,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:24:11,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:24:11,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:24:11,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:24:11,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:24:11,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:24:11,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:24:11,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:24:11,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:24:11,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:24:11,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:24:11,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:24:11,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:24:11,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:24:11,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:24:11,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:24:11,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:24:11,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:24:11,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:24:11,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:24:11,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:24:11,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:24:11,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:24:11,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:24:11,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:24:11,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:24:11,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:24:11,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:24:11,104 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:24:11,152 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:24:11,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:24:11,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:24:11,153 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:24:11,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:24:11,154 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:24:11,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:24:11,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:24:11,156 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:24:11,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:24:11,158 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:24:11,158 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:24:11,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:24:11,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:24:11,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:24:11,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:24:11,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:24:11,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:24:11,160 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:24:11,160 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:24:11,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:24:11,161 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:24:11,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:24:11,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:24:11,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:24:11,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:24:11,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:11,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:24:11,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:24:11,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:24:11,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:24:11,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:24:11,166 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:24:11,166 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:24:11,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:24:11,167 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_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 [2022-11-02 20:24:11,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:24:11,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:24:11,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:24:11,610 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:24:11,611 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:24:11,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2022-11-02 20:24:11,700 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/bin/uautomizer-Dbtcem3rbc/data/32e8e9090/1785c63009da4125bd39cb827ef101ff/FLAG0cd8b1805 [2022-11-02 20:24:12,489 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:24:12,490 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2022-11-02 20:24:12,518 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/bin/uautomizer-Dbtcem3rbc/data/32e8e9090/1785c63009da4125bd39cb827ef101ff/FLAG0cd8b1805 [2022-11-02 20:24:12,709 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/bin/uautomizer-Dbtcem3rbc/data/32e8e9090/1785c63009da4125bd39cb827ef101ff [2022-11-02 20:24:12,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:24:12,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:24:12,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:12,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:24:12,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:24:12,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:12" (1/1) ... [2022-11-02 20:24:12,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ac92f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:12, skipping insertion in model container [2022-11-02 20:24:12,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:12" (1/1) ... [2022-11-02 20:24:12,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:24:12,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:24:13,374 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_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2022-11-02 20:24:13,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:13,453 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:24:13,499 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_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2022-11-02 20:24:13,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:13,605 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:24:13,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:13 WrapperNode [2022-11-02 20:24:13,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:13,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:13,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:24:13,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:24:13,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:13" (1/1) ... [2022-11-02 20:24:13,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:13" (1/1) ... [2022-11-02 20:24:13,715 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 312 [2022-11-02 20:24:13,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:13,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:24:13,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:24:13,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:24:13,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:13" (1/1) ... [2022-11-02 20:24:13,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:13" (1/1) ... [2022-11-02 20:24:13,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:13" (1/1) ... [2022-11-02 20:24:13,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:13" (1/1) ... [2022-11-02 20:24:13,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:13" (1/1) ... [2022-11-02 20:24:13,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:13" (1/1) ... [2022-11-02 20:24:13,777 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:13" (1/1) ... [2022-11-02 20:24:13,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:13" (1/1) ... [2022-11-02 20:24:13,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:24:13,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:24:13,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:24:13,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:24:13,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:13" (1/1) ... [2022-11-02 20:24:13,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:13,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:13,838 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:24:13,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cbead47-c2ac-4f60-bd43-6bd60ad1c9fe/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:24:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:24:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:24:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-02 20:24:13,893 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-02 20:24:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:24:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:24:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-02 20:24:13,896 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-02 20:24:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:24:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:24:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:24:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:24:13,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:24:13,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:24:13,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:24:13,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:24:13,899 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 20:24:14,168 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:24:14,170 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:24:15,165 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:24:15,177 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:24:15,177 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-02 20:24:15,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:15 BoogieIcfgContainer [2022-11-02 20:24:15,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:24:15,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:24:15,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:24:15,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:24:15,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:24:12" (1/3) ... [2022-11-02 20:24:15,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba3f6e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:24:15, skipping insertion in model container [2022-11-02 20:24:15,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:13" (2/3) ... [2022-11-02 20:24:15,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba3f6e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:24:15, skipping insertion in model container [2022-11-02 20:24:15,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:15" (3/3) ... [2022-11-02 20:24:15,192 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2022-11-02 20:24:15,203 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:24:15,216 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:24:15,216 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-02 20:24:15,216 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:24:15,420 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-02 20:24:15,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 328 places, 346 transitions, 714 flow [2022-11-02 20:24:15,819 INFO L130 PetriNetUnfolder]: 52/627 cut-off events. [2022-11-02 20:24:15,819 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-11-02 20:24:15,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 627 events. 52/627 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2816 event pairs, 0 based on Foata normal form. 0/533 useless extension candidates. Maximal degree in co-relation 313. Up to 8 conditions per place. [2022-11-02 20:24:15,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 328 places, 346 transitions, 714 flow [2022-11-02 20:24:15,856 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 328 places, 346 transitions, 714 flow [2022-11-02 20:24:15,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:24:15,892 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;@4c73dceb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:24:15,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-11-02 20:24:15,901 INFO L130 PetriNetUnfolder]: 0/38 cut-off events. [2022-11-02 20:24:15,901 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:24:15,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:15,902 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] [2022-11-02 20:24:15,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-02 20:24:15,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:15,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1404080335, now seen corresponding path program 1 times [2022-11-02 20:24:15,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:15,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073865811] [2022-11-02 20:24:15,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:15,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:16,226 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 20:24:16,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:16,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073865811] [2022-11-02 20:24:16,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073865811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:16,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:16,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:24:16,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447441641] [2022-11-02 20:24:16,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:16,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:24:16,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:16,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:24:16,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:24:16,302 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 346 [2022-11-02 20:24:16,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 346 transitions, 714 flow. Second operand has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 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 20:24:16,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:16,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 346 [2022-11-02 20:24:16,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:16,848 INFO L130 PetriNetUnfolder]: 49/1167 cut-off events. [2022-11-02 20:24:16,848 INFO L131 PetriNetUnfolder]: For 96/111 co-relation queries the response was YES. [2022-11-02 20:24:16,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 1167 events. 49/1167 cut-off events. For 96/111 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 6085 event pairs, 24 based on Foata normal form. 90/1133 useless extension candidates. Maximal degree in co-relation 811. Up to 79 conditions per place. [2022-11-02 20:24:16,869 INFO L137 encePairwiseOnDemand]: 327/346 looper letters, 18 selfloop transitions, 2 changer transitions 0/328 dead transitions. [2022-11-02 20:24:16,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 328 transitions, 718 flow [2022-11-02 20:24:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:24:16,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:24:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 961 transitions. [2022-11-02 20:24:16,900 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9258188824662813 [2022-11-02 20:24:16,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 961 transitions. [2022-11-02 20:24:16,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 961 transitions. [2022-11-02 20:24:16,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:16,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 961 transitions. [2022-11-02 20:24:16,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 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 20:24:16,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 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 20:24:16,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 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 20:24:16,972 INFO L175 Difference]: Start difference. First operand has 328 places, 346 transitions, 714 flow. Second operand 3 states and 961 transitions. [2022-11-02 20:24:16,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 328 transitions, 718 flow [2022-11-02 20:24:16,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 328 transitions, 718 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:24:16,999 INFO L231 Difference]: Finished difference. Result has 328 places, 328 transitions, 682 flow [2022-11-02 20:24:17,002 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=682, PETRI_PLACES=328, PETRI_TRANSITIONS=328} [2022-11-02 20:24:17,008 INFO L287 CegarLoopForPetriNet]: 328 programPoint places, 0 predicate places. [2022-11-02 20:24:17,008 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 328 transitions, 682 flow [2022-11-02 20:24:17,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 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 20:24:17,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:17,011 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] [2022-11-02 20:24:17,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:24:17,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-02 20:24:17,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:17,014 INFO L85 PathProgramCache]: Analyzing trace with hash -175472005, now seen corresponding path program 1 times [2022-11-02 20:24:17,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:17,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714069844] [2022-11-02 20:24:17,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:17,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:17,158 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 20:24:17,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:17,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714069844] [2022-11-02 20:24:17,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714069844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:17,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:17,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:24:17,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594197882] [2022-11-02 20:24:17,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:17,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:24:17,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:17,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:24:17,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:24:17,165 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 346 [2022-11-02 20:24:17,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 328 transitions, 682 flow. Second operand has 3 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 0 states have call successors, (0), 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 20:24:17,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:17,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 346 [2022-11-02 20:24:17,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:17,533 INFO L130 PetriNetUnfolder]: 38/1070 cut-off events. [2022-11-02 20:24:17,533 INFO L131 PetriNetUnfolder]: For 81/94 co-relation queries the response was YES. [2022-11-02 20:24:17,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1164 conditions, 1070 events. 38/1070 cut-off events. For 81/94 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 5321 event pairs, 14 based on Foata normal form. 0/971 useless extension candidates. Maximal degree in co-relation 1114. Up to 51 conditions per place. [2022-11-02 20:24:17,552 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 13 selfloop transitions, 1 changer transitions 0/325 dead transitions. [2022-11-02 20:24:17,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 325 transitions, 704 flow [2022-11-02 20:24:17,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:24:17,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:24:17,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 950 transitions. [2022-11-02 20:24:17,558 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9152215799614644 [2022-11-02 20:24:17,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 950 transitions. [2022-11-02 20:24:17,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 950 transitions. [2022-11-02 20:24:17,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:17,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 950 transitions. [2022-11-02 20:24:17,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 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 20:24:17,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 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 20:24:17,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 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 20:24:17,569 INFO L175 Difference]: Start difference. First operand has 328 places, 328 transitions, 682 flow. Second operand 3 states and 950 transitions. [2022-11-02 20:24:17,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 325 transitions, 704 flow [2022-11-02 20:24:17,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 325 transitions, 700 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:24:17,609 INFO L231 Difference]: Finished difference. Result has 325 places, 325 transitions, 674 flow [2022-11-02 20:24:17,610 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=674, PETRI_PLACES=325, PETRI_TRANSITIONS=325} [2022-11-02 20:24:17,611 INFO L287 CegarLoopForPetriNet]: 328 programPoint places, -3 predicate places. [2022-11-02 20:24:17,620 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 325 transitions, 674 flow [2022-11-02 20:24:17,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 0 states have call successors, (0), 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 20:24:17,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:17,621 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 20:24:17,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:24:17,623 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-02 20:24:17,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:17,625 INFO L85 PathProgramCache]: Analyzing trace with hash -366988155, now seen corresponding path program 1 times [2022-11-02 20:24:17,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:17,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796186568] [2022-11-02 20:24:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:17,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:18,314 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 20:24:18,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:18,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796186568] [2022-11-02 20:24:18,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796186568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:18,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:18,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:18,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843620137] [2022-11-02 20:24:18,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:18,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:24:18,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:18,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:24:18,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:24:18,324 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 346 [2022-11-02 20:24:18,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 325 transitions, 674 flow. Second operand has 6 states, 6 states have (on average 222.5) internal successors, (1335), 6 states have internal predecessors, (1335), 0 states have call successors, (0), 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 20:24:18,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:18,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 346 [2022-11-02 20:24:18,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:36,577 INFO L130 PetriNetUnfolder]: 34434/76061 cut-off events. [2022-11-02 20:24:36,577 INFO L131 PetriNetUnfolder]: For 555/555 co-relation queries the response was YES. [2022-11-02 20:24:36,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128766 conditions, 76061 events. 34434/76061 cut-off events. For 555/555 co-relation queries the response was YES. Maximal size of possible extension queue 1535. Compared 809207 event pairs, 33402 based on Foata normal form. 0/65811 useless extension candidates. Maximal degree in co-relation 128718. Up to 52452 conditions per place. [2022-11-02 20:24:37,446 INFO L137 encePairwiseOnDemand]: 340/346 looper letters, 102 selfloop transitions, 5 changer transitions 0/324 dead transitions. [2022-11-02 20:24:37,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 324 transitions, 886 flow [2022-11-02 20:24:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:24:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:24:37,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1434 transitions. [2022-11-02 20:24:37,454 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6907514450867052 [2022-11-02 20:24:37,454 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1434 transitions. [2022-11-02 20:24:37,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1434 transitions. [2022-11-02 20:24:37,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:37,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1434 transitions. [2022-11-02 20:24:37,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 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 20:24:37,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 346.0) internal successors, (2422), 7 states have internal predecessors, (2422), 0 states have call successors, (0), 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 20:24:37,468 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 346.0) internal successors, (2422), 7 states have internal predecessors, (2422), 0 states have call successors, (0), 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 20:24:37,468 INFO L175 Difference]: Start difference. First operand has 325 places, 325 transitions, 674 flow. Second operand 6 states and 1434 transitions. [2022-11-02 20:24:37,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 324 transitions, 886 flow [2022-11-02 20:24:37,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 324 transitions, 885 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:24:37,489 INFO L231 Difference]: Finished difference. Result has 328 places, 324 transitions, 681 flow [2022-11-02 20:24:37,490 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=681, PETRI_PLACES=328, PETRI_TRANSITIONS=324} [2022-11-02 20:24:37,493 INFO L287 CegarLoopForPetriNet]: 328 programPoint places, 0 predicate places. [2022-11-02 20:24:37,494 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 324 transitions, 681 flow [2022-11-02 20:24:37,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 222.5) internal successors, (1335), 6 states have internal predecessors, (1335), 0 states have call successors, (0), 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 20:24:37,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:37,496 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, 1] [2022-11-02 20:24:37,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:24:37,497 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-02 20:24:37,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:37,498 INFO L85 PathProgramCache]: Analyzing trace with hash -248658370, now seen corresponding path program 1 times [2022-11-02 20:24:37,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:37,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354014701] [2022-11-02 20:24:37,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:37,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:38,126 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 20:24:38,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:38,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354014701] [2022-11-02 20:24:38,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354014701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:38,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:38,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:38,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659566769] [2022-11-02 20:24:38,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:38,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:24:38,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:38,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:24:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:24:38,137 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 346 [2022-11-02 20:24:38,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 324 transitions, 681 flow. Second operand has 6 states, 6 states have (on average 223.5) internal successors, (1341), 6 states have internal predecessors, (1341), 0 states have call successors, (0), 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 20:24:38,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:38,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 346 [2022-11-02 20:24:38,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:53,965 INFO L130 PetriNetUnfolder]: 34434/76060 cut-off events. [2022-11-02 20:24:53,966 INFO L131 PetriNetUnfolder]: For 556/556 co-relation queries the response was YES. [2022-11-02 20:24:54,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128769 conditions, 76060 events. 34434/76060 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 1535. Compared 809888 event pairs, 33402 based on Foata normal form. 0/65811 useless extension candidates. Maximal degree in co-relation 128721. Up to 52451 conditions per place. [2022-11-02 20:24:54,997 INFO L137 encePairwiseOnDemand]: 340/346 looper letters, 101 selfloop transitions, 5 changer transitions 0/323 dead transitions. [2022-11-02 20:24:54,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 323 transitions, 891 flow [2022-11-02 20:24:54,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:24:54,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:24:55,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1433 transitions. [2022-11-02 20:24:55,002 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6902697495183044 [2022-11-02 20:24:55,002 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1433 transitions. [2022-11-02 20:24:55,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1433 transitions. [2022-11-02 20:24:55,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:55,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1433 transitions. [2022-11-02 20:24:55,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 238.83333333333334) internal successors, (1433), 6 states have internal predecessors, (1433), 0 states have call successors, (0), 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 20:24:55,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 346.0) internal successors, (2422), 7 states have internal predecessors, (2422), 0 states have call successors, (0), 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 20:24:55,016 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 346.0) internal successors, (2422), 7 states have internal predecessors, (2422), 0 states have call successors, (0), 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 20:24:55,016 INFO L175 Difference]: Start difference. First operand has 328 places, 324 transitions, 681 flow. Second operand 6 states and 1433 transitions. [2022-11-02 20:24:55,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 323 transitions, 891 flow [2022-11-02 20:24:55,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 323 transitions, 881 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:24:55,032 INFO L231 Difference]: Finished difference. Result has 327 places, 323 transitions, 679 flow [2022-11-02 20:24:55,033 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=679, PETRI_PLACES=327, PETRI_TRANSITIONS=323} [2022-11-02 20:24:55,034 INFO L287 CegarLoopForPetriNet]: 328 programPoint places, -1 predicate places. [2022-11-02 20:24:55,035 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 323 transitions, 679 flow [2022-11-02 20:24:55,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 223.5) internal successors, (1341), 6 states have internal predecessors, (1341), 0 states have call successors, (0), 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 20:24:55,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:55,037 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:55,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:24:55,037 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-02 20:24:55,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:55,038 INFO L85 PathProgramCache]: Analyzing trace with hash 186994297, now seen corresponding path program 1 times [2022-11-02 20:24:55,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:55,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255001642] [2022-11-02 20:24:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:55,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:55,172 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 20:24:55,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:55,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255001642] [2022-11-02 20:24:55,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255001642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:55,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:55,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:24:55,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76051581] [2022-11-02 20:24:55,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:55,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:24:55,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:55,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:24:55,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:24:55,189 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 346 [2022-11-02 20:24:55,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 323 transitions, 679 flow. Second operand has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 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 20:24:55,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:55,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 346 [2022-11-02 20:24:55,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:55,322 INFO L130 PetriNetUnfolder]: 9/434 cut-off events. [2022-11-02 20:24:55,322 INFO L131 PetriNetUnfolder]: For 28/58 co-relation queries the response was YES. [2022-11-02 20:24:55,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 434 events. 9/434 cut-off events. For 28/58 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1150 event pairs, 0 based on Foata normal form. 2/399 useless extension candidates. Maximal degree in co-relation 429. Up to 15 conditions per place. [2022-11-02 20:24:55,328 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 13 selfloop transitions, 2 changer transitions 0/325 dead transitions. [2022-11-02 20:24:55,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 325 transitions, 713 flow [2022-11-02 20:24:55,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:24:55,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:24:55,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 964 transitions. [2022-11-02 20:24:55,332 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.928709055876686 [2022-11-02 20:24:55,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 964 transitions. [2022-11-02 20:24:55,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 964 transitions. [2022-11-02 20:24:55,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:55,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 964 transitions. [2022-11-02 20:24:55,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 0 states have call successors, (0), 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 20:24:55,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 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 20:24:55,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 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 20:24:55,343 INFO L175 Difference]: Start difference. First operand has 327 places, 323 transitions, 679 flow. Second operand 3 states and 964 transitions. [2022-11-02 20:24:55,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 325 transitions, 713 flow [2022-11-02 20:24:55,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 325 transitions, 703 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:24:55,352 INFO L231 Difference]: Finished difference. Result has 325 places, 323 transitions, 677 flow [2022-11-02 20:24:55,353 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=677, PETRI_PLACES=325, PETRI_TRANSITIONS=323} [2022-11-02 20:24:55,354 INFO L287 CegarLoopForPetriNet]: 328 programPoint places, -3 predicate places. [2022-11-02 20:24:55,354 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 323 transitions, 677 flow [2022-11-02 20:24:55,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 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 20:24:55,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:55,355 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, 1, 1, 1, 1, 1, 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 20:24:55,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:24:55,356 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-02 20:24:55,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:55,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1986100883, now seen corresponding path program 1 times [2022-11-02 20:24:55,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:55,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505517801] [2022-11-02 20:24:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:55,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:24:55,400 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:24:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:24:55,458 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:24:55,458 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:24:55,460 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2022-11-02 20:24:55,462 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2022-11-02 20:24:55,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2022-11-02 20:24:55,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2022-11-02 20:24:55,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2022-11-02 20:24:55,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2022-11-02 20:24:55,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2022-11-02 20:24:55,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2022-11-02 20:24:55,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2022-11-02 20:24:55,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2022-11-02 20:24:55,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2022-11-02 20:24:55,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2022-11-02 20:24:55,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2022-11-02 20:24:55,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2022-11-02 20:24:55,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2022-11-02 20:24:55,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 36 remaining) [2022-11-02 20:24:55,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2022-11-02 20:24:55,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2022-11-02 20:24:55,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2022-11-02 20:24:55,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2022-11-02 20:24:55,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2022-11-02 20:24:55,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2022-11-02 20:24:55,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2022-11-02 20:24:55,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2022-11-02 20:24:55,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2022-11-02 20:24:55,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2022-11-02 20:24:55,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2022-11-02 20:24:55,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2022-11-02 20:24:55,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2022-11-02 20:24:55,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2022-11-02 20:24:55,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2022-11-02 20:24:55,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2022-11-02 20:24:55,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2022-11-02 20:24:55,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2022-11-02 20:24:55,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2022-11-02 20:24:55,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2022-11-02 20:24:55,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:24:55,473 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-02 20:24:55,476 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:24:55,477 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:24:55,603 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-02 20:24:55,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 525 places, 558 transitions, 1164 flow [2022-11-02 20:24:56,448 INFO L130 PetriNetUnfolder]: 191/1821 cut-off events. [2022-11-02 20:24:56,449 INFO L131 PetriNetUnfolder]: For 72/126 co-relation queries the response was YES. [2022-11-02 20:24:56,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1918 conditions, 1821 events. 191/1821 cut-off events. For 72/126 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 12594 event pairs, 2 based on Foata normal form. 0/1530 useless extension candidates. Maximal degree in co-relation 1132. Up to 32 conditions per place. [2022-11-02 20:24:56,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 525 places, 558 transitions, 1164 flow [2022-11-02 20:24:56,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 525 places, 558 transitions, 1164 flow [2022-11-02 20:24:56,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:24:56,580 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;@4c73dceb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:24:56,580 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2022-11-02 20:24:56,584 INFO L130 PetriNetUnfolder]: 0/38 cut-off events. [2022-11-02 20:24:56,585 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:24:56,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:56,585 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] [2022-11-02 20:24:56,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-02 20:24:56,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:56,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1576901243, now seen corresponding path program 1 times [2022-11-02 20:24:56,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:56,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142634201] [2022-11-02 20:24:56,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:56,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:56,628 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 20:24:56,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:56,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142634201] [2022-11-02 20:24:56,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142634201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:56,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:56,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:24:56,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757807416] [2022-11-02 20:24:56,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:56,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:24:56,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:56,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:24:56,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:24:56,634 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 495 out of 558 [2022-11-02 20:24:56,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 558 transitions, 1164 flow. Second operand has 3 states, 3 states have (on average 496.3333333333333) internal successors, (1489), 3 states have internal predecessors, (1489), 0 states have call successors, (0), 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 20:24:56,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:56,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 495 of 558 [2022-11-02 20:24:56,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:25:05,828 INFO L130 PetriNetUnfolder]: 3136/30596 cut-off events. [2022-11-02 20:25:05,828 INFO L131 PetriNetUnfolder]: For 4823/5455 co-relation queries the response was YES. [2022-11-02 20:25:06,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36092 conditions, 30596 events. 3136/30596 cut-off events. For 4823/5455 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 419158 event pairs, 2284 based on Foata normal form. 3308/30006 useless extension candidates. Maximal degree in co-relation 18933. Up to 3939 conditions per place. [2022-11-02 20:25:06,605 INFO L137 encePairwiseOnDemand]: 527/558 looper letters, 30 selfloop transitions, 2 changer transitions 0/527 dead transitions. [2022-11-02 20:25:06,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 527 transitions, 1166 flow [2022-11-02 20:25:06,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:25:06,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:25:06,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1546 transitions. [2022-11-02 20:25:06,611 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9235364396654719 [2022-11-02 20:25:06,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1546 transitions. [2022-11-02 20:25:06,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1546 transitions. [2022-11-02 20:25:06,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:25:06,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1546 transitions. [2022-11-02 20:25:06,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 515.3333333333334) internal successors, (1546), 3 states have internal predecessors, (1546), 0 states have call successors, (0), 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 20:25:06,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 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 20:25:06,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 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 20:25:06,624 INFO L175 Difference]: Start difference. First operand has 525 places, 558 transitions, 1164 flow. Second operand 3 states and 1546 transitions. [2022-11-02 20:25:06,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 527 transitions, 1166 flow [2022-11-02 20:25:06,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 527 transitions, 1166 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:25:06,647 INFO L231 Difference]: Finished difference. Result has 524 places, 527 transitions, 1106 flow [2022-11-02 20:25:06,648 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1106, PETRI_PLACES=524, PETRI_TRANSITIONS=527} [2022-11-02 20:25:06,651 INFO L287 CegarLoopForPetriNet]: 525 programPoint places, -1 predicate places. [2022-11-02 20:25:06,651 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 527 transitions, 1106 flow [2022-11-02 20:25:06,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 496.3333333333333) internal successors, (1489), 3 states have internal predecessors, (1489), 0 states have call successors, (0), 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 20:25:06,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:25:06,653 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] [2022-11-02 20:25:06,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:25:06,653 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-02 20:25:06,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:06,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1700265689, now seen corresponding path program 1 times [2022-11-02 20:25:06,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:06,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826294435] [2022-11-02 20:25:06,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:06,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:06,723 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 20:25:06,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:06,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826294435] [2022-11-02 20:25:06,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826294435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:06,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:06,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:25:06,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258815209] [2022-11-02 20:25:06,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:06,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:25:06,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:06,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:25:06,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:25:06,728 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 498 out of 558 [2022-11-02 20:25:06,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 527 transitions, 1106 flow. Second operand has 3 states, 3 states have (on average 499.3333333333333) internal successors, (1498), 3 states have internal predecessors, (1498), 0 states have call successors, (0), 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 20:25:06,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:25:06,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 498 of 558 [2022-11-02 20:25:06,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand